{"id":5749,"date":"2017-08-10T14:27:00","date_gmt":"2017-08-10T11:27:00","guid":{"rendered":"http:\/\/viewonphysics.gr\/?p=5749"},"modified":"2017-08-10T14:27:00","modified_gmt":"2017-08-10T11:27:00","slug":"%ce%b4%cf%85%ce%bd%ce%b1%ce%bc%ce%b9%ce%ba%ce%ae-%cf%83%cf%84%ce%bf-%ce%b5%cf%80%ce%af%cf%80%ce%b5%ce%b4%ce%bf-online-%cf%80%ce%bf%ce%bb%ce%bb%ce%b1%cf%80%ce%bb%ce%ae%cf%82-%ce%b5%cf%80%ce%b9%ce%bb","status":"publish","type":"post","link":"https:\/\/viewonphysics.gr\/?p=5749","title":{"rendered":"\u0394\u03c5\u03bd\u03b1\u03bc\u03b9\u03ba\u03ae \u03c3\u03c4\u03bf \u0395\u03c0\u03af\u03c0\u03b5\u03b4\u03bf Online: \u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2 \u0395\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2"},"content":{"rendered":"<script type=\"text\/javascript\" >\ndocument.addEventListener(\"DOMContentLoaded\", function(event) { \nif(!window.jQuery) alert(\"The important jQuery library is not properly loaded in your site. Your WordPress theme is probably missing the essential wp_head() call. You can switch to another theme and you will see that the plugin works fine and this notice disappears. If you are still not sure what to do you can contact us for help.\");\n});\n<\/script>  \n  \n<div  id=\"watupro_quiz\" class=\"quiz-area single-page-quiz\">\n<p id=\"submittingExam32\" style=\"display:none;text-align:center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/viewonphysics.gr\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\"><\/p>\n\n<div class=\"watupro-exam-description\" id=\"description-quiz-32\"><p>\u0394\u03b9\u03b1\u03c0\u03af\u03c3\u03c4\u03c9\u03c3\u03b5 \u03c0\u03bf\u03b9\u03bf \u03b5\u03af\u03bd\u03b1\u03b9 \u03c4\u03bf \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf \u03c4\u03c9\u03bd \u03b3\u03bd\u03ce\u03c3\u03b5\u03ce\u03bd \u03c3\u03bf\u03c5 \u03b1\u03c0\u03b1\u03bd\u03c4\u03ce\u03bd\u03c4\u03b1\u03c2 \u03c3\u03c4\u03b9\u03c2 20 \u03b5\u03c1\u03c9\u03c4\u03ae\u03c3\u03b5\u03b9\u03c2 \u03c0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2 \u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2 \u03c0\u03ac\u03bd\u03c9 \u03c3\u03c4\u03bf \u03ba\u03b5\u03c6\u03ac\u03bb\u03b1\u03b9\u03bf \u0394\u03c5\u03bd\u03b1\u03bc\u03b9\u03ba\u03ae \u03c3\u03c4\u03bf \u0395\u03c0\u03af\u03c0\u03b5\u03b4\u03bf.<\/p>\n<p>\u039a\u03ac\u03b8\u03b5 \u03b5\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 \u03b2\u03b1\u03b8\u03bc\u03bf\u03bb\u03bf\u03b3\u03b5\u03af\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc 1 \u03bc\u03bf\u03bd\u03ac\u03b4\u03b1.<\/p>\n<p>\u038c\u03c4\u03b1\u03bd \u03bf\u03bb\u03bf\u03ba\u03bb\u03b7\u03c1\u03ce\u03c3\u03b5\u03b9\u03c2 \u03c0\u03ac\u03c4\u03b1 \u03c4\u03bf \u03ba\u03bf\u03c5\u03bc\u03c0\u03af \"\u0391\u03c0\u03bf\u03c4\u03b5\u03bb\u03ad\u03c3\u03bc\u03b1\u03c4\u03b1\" \u03ba\u03b1\u03b9 \u03b1\u03c5\u03c4\u03cc\u03bc\u03b1\u03c4\u03b1 \u03b8\u03b1 \u03b4\u03b5\u03b9\u03c2 \u03c4\u03b9\u03c2 \u03c3\u03c9\u03c3\u03c4\u03ad\u03c2 \u03b1\u03c0\u03b1\u03bd\u03c4\u03ae\u03c3\u03b5\u03b9\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03b5\u03c0\u03af\u03b4\u03bf\u03c3\u03ae \u03c3\u03bf\u03c5.<\/p>\n<\/div>\n\n<form action=\"\" method=\"post\" class=\"quiz-form\" id=\"quiz-32\"  enctype=\"multipart\/form-data\" >\n<div class='watu-question ' id='question-1' style=';'><div id='questionWrap-1'  class='   watupro-question-id-339'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>1. <\/span>\u03a0\u03bf\u03b9\u03b1 \u03b1\u03c0\u03cc \u03c4\u03b9\u03c2 \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u03c0\u03c1\u03bf\u03c4\u03ac\u03c3\u03b5\u03b9\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c3\u03c9\u03c3\u03c4\u03ae;<\/div><input type='hidden' name='question_id[]' id='qID_1' value='339' \/><input type='hidden' id='answerType339' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-339[]' id='answer-id-1010' class='answer   answerof-339 ' value='1010'   \/><label for='answer-id-1010' id='answer-label-1010' class=' answer'><span>\u038c\u03c4\u03b1\u03bd \u03c3\u03b5 \u03ad\u03bd\u03b1 \u03c3\u03ce\u03bc\u03b1 \u03b1\u03c3\u03ba\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03b4\u03cd\u03bf \u03b1\u03bd\u03c4\u03af\u03b8\u03b5\u03c4\u03b5\u03c2 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2, \u03b7 \u03bc\u03af\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b7 \u03b4\u03c1\u03ac\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03b7 \u03ac\u03bb\u03bb\u03b7 \u03b7 \u03b1\u03bd\u03c4\u03af\u03b4\u03c1\u03b1\u03c3\u03b7.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-339[]' id='answer-id-1011' class='answer   answerof-339 ' value='1011'   \/><label for='answer-id-1011' id='answer-label-1011' class=' answer'><span>\u0395\u03c0\u03b5\u03b9\u03b4\u03ae \u03b7 \u03b4\u03c1\u03ac\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03b7 \u03b1\u03bd\u03c4\u03af\u03b4\u03c1\u03b1\u03c3\u03b7 \u03b5\u03af\u03bd\u03b1\u03b9 \u03af\u03c3\u03b5\u03c2 \u03ba\u03b1\u03c4\u03ac \u03bc\u03ad\u03c4\u03c1\u03bf, \u03c6\u03ad\u03c1\u03bd\u03bf\u03c5\u03bd \u03c4\u03b1 \u03af\u03b4\u03b9\u03b1 \u03b1\u03c0\u03bf\u03c4\u03b5\u03bb\u03ad\u03c3\u03bc\u03b1\u03c4\u03b1.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-339[]' id='answer-id-1012' class='answer   answerof-339 ' value='1012'   \/><label for='answer-id-1012' id='answer-label-1012' class=' answer'><span>\u0397 \u03b4\u03c1\u03ac\u03c3\u03b7 \u03ba\u03b1\u03b9 \u03b1\u03bd\u03c4\u03af\u03b4\u03c1\u03b1\u03c3\u03b7 \u03b5\u03bc\u03c6\u03b1\u03bd\u03af\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03cc\u03c4\u03b1\u03bd \u03c4\u03b1 \u03c3\u03ce\u03bc\u03b1\u03c4\u03b1 \u03c0\u03bf\u03c5 \u03b1\u03bb\u03bb\u03b7\u03bb\u03b5\u03c0\u03b9\u03b4\u03c1\u03bf\u03cd\u03bd \u03b5\u03af\u03bd\u03b1\u03b9 \u03c3\u03b5 \u03b5\u03c0\u03b1\u03c6\u03ae.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-339[]' id='answer-id-1013' class='answer   answerof-339 ' value='1013'   \/><label for='answer-id-1013' id='answer-label-1013' class=' answer'><span>\u03a3\u03c4\u03b7 \u03c6\u03cd\u03c3\u03b7 \u03b4\u03b5\u03bd \u03c5\u03c0\u03ac\u03c1\u03c7\u03b5\u03b9 \u03bc\u03b5\u03bc\u03bf\u03bd\u03c9\u03bc\u03ad\u03bd\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7. \u03a0\u03ac\u03bd\u03c4\u03b1 \u03bf\u03b9 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 \u03b5\u03bc\u03c6\u03b1\u03bd\u03af\u03b6\u03bf\u03bd\u03c4\u03b1\u03b9 \u03ba\u03b1\u03c4\u03ac \u03b6\u03b5\u03cd\u03b3\u03b7.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-2' style=';'><div id='questionWrap-2'  class='   watupro-question-id-340'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>2. <\/span>\u03a0\u03bf\u03b9\u03b5\u03c2 \u03b1\u03c0\u03cc \u03c4\u03b9\u03c2 \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u03c0\u03c1\u03bf\u03c4\u03ac\u03c3\u03b5\u03b9\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c3\u03c9\u03c3\u03c4\u03ad\u03c2; \u0388\u03bd\u03b1\u03c2 \u03b2\u03b1\u03c1\u03ba\u03ac\u03c1\u03b7\u03c2 \u03c4\u03c1\u03b1\u03b2\u03ac\u03b5\u03b9 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03b1\u03ba\u03c4\u03ae \u03bc\u03b5 \u03ad\u03bd\u03b1 \u03c3\u03c7\u03bf\u03b9\u03bd\u03af \u03c4\u03b7 \u03b2\u03ac\u03c1\u03ba\u03b1 \u03c4\u03bf\u03c5 \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03c4\u03b7 \u03b2\u03b3\u03ac\u03bb\u03b5\u03b9 \u03ad\u03be\u03c9.<\/div><input type='hidden' name='question_id[]' id='qID_2' value='340' \/><input type='hidden' id='answerType340' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-340[]' id='answer-id-1014' class='answer   answerof-340 watupro_max_selections-2' value='1014'  onclick='return WatuPRO.maxSelections(340,2, this);' \/><label for='answer-id-1014' id='answer-label-1014' class=' answer'><span>\u0397 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03bf\u03c5 \u03b2\u03ac\u03b6\u03b5\u03b9 \u03c3\u03c4\u03bf \u03c3\u03c7\u03bf\u03b9\u03bd\u03af \u03bf \u03b2\u03b1\u03c1\u03ba\u03ac\u03c1\u03b7\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b5\u03b3\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03b7 \u03b1\u03c0\u03cc \u03b1\u03c5\u03c4\u03ae\u03bd \u03c0\u03bf\u03c5 \u03b1\u03c3\u03ba\u03b5\u03af \u03b7 \u03b2\u03ac\u03c1\u03ba\u03b1 \u03c3\u03c4\u03bf \u03c3\u03c7\u03bf\u03b9\u03bd\u03af.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-340[]' id='answer-id-1015' class='answer   answerof-340 watupro_max_selections-2' value='1015'  onclick='return WatuPRO.maxSelections(340,2, this);' \/><label for='answer-id-1015' id='answer-label-1015' class=' answer'><span>\u038c\u03bb\u03b5\u03c2 \u03bf\u03b9 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 \u03c0\u03bf\u03c5 \u03b1\u03c3\u03ba\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5 \u03b2\u03b1\u03c1\u03ba\u03ac\u03c1\u03b7 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03c2 \u03b2\u03ac\u03c1\u03ba\u03b1\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 \u03b5\u03ba \u03b5\u03c0\u03b1\u03c6\u03ae\u03c2.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-340[]' id='answer-id-1016' class='answer   answerof-340 watupro_max_selections-2' value='1016'  onclick='return WatuPRO.maxSelections(340,2, this);' \/><label for='answer-id-1016' id='answer-label-1016' class=' answer'><span>\u0397 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c4\u03bf\u03c5 \u03b2\u03b1\u03c1\u03ba\u03ac\u03c1\u03b7 \u03b1\u03c3\u03ba\u03b5\u03af\u03c4\u03b1\u03b9 \u03b1\u03c0' \u03b5\u03c5\u03b8\u03b5\u03af\u03b1\u03c2 \u03c0\u03ac\u03bd\u03c9 \u03c3\u03c4\u03b7 \u03b2\u03ac\u03c1\u03ba\u03b1 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03ba\u03b9\u03bd\u03b5\u03af.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-340[]' id='answer-id-1017' class='answer   answerof-340 watupro_max_selections-2' value='1017'  onclick='return WatuPRO.maxSelections(340,2, this);' \/><label for='answer-id-1017' id='answer-label-1017' class=' answer'><span>\u03a4\u03bf \u03c3\u03c7\u03bf\u03b9\u03bd\u03af \u03b1\u03c3\u03ba\u03b5\u03af \u03c3\u03c4\u03b7 \u03b2\u03ac\u03c1\u03ba\u03b1 \u03ba\u03b1\u03b9 \u03c3\u03c4\u03bf \u03b2\u03b1\u03c1\u03ba\u03ac\u03c1\u03b7 \u03b4\u03cd\u03bf \u03b1\u03bd\u03c4\u03af\u03b8\u03b5\u03c4\u03b5\u03c2 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-3' style=';'><div id='questionWrap-3'  class='   watupro-question-id-341'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>3. <\/span>\u0394\u03b9\u03ac\u03bb\u03b5\u03be\u03b5 \u03c4\u03b7 \u03c3\u03c9\u03c3\u03c4\u03ae \u03b1\u03c0\u03ac\u03bd\u03c4\u03b7\u03c3\u03b7. \u03a3\u03c4\u03b7 \u03b8\u03ad\u03c3\u03b7 \u0391 \u03c4\u03bf\u03c0\u03bf\u03b8\u03b5\u03c4\u03bf\u03cd\u03bc\u03b5 \u03bc\u03af\u03b1 \u03c3\u03c6\u03b1\u03af\u03c1\u03b1 \u03c0\u03ac\u03bd\u03c9 \u03c3\u03b5 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf. \u03a3\u03c4\u03b7 \u03b8\u03ad\u03c3\u03b7 \u0392 \u03b7 \u03af\u03b4\u03b9\u03b1 \u03c3\u03c6\u03b1\u03af\u03c1\u03b1 \u03c0\u03ad\u03c6\u03c4\u03b5\u03b9 \u03b1\u03c0\u03cc \u03bf\u03c1\u03b9\u03c3\u03bc\u03ad\u03bd\u03bf \u03cd\u03c8\u03bf\u03c2 \u03ba\u03b1\u03b9 \u03b1\u03ba\u03b9\u03bd\u03b7\u03c4\u03bf\u03c0\u03bf\u03b9\u03b5\u03af\u03c4\u03b1\u03b9. \u0391\u03bd \u03c3\u03c5\u03b3\u03ba\u03c1\u03af\u03bd\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03bf\u03c5 \u03b1\u03c3\u03ba\u03b5\u03af \u03b7 \u03c3\u03c6\u03b1\u03af\u03c1\u03b1 \u03c3\u03c4\u03bf \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf \u03c3\u03c4\u03b7 \u03b8\u03ad\u03c3\u03b7 \u0391, \u03bc\u03b5 \u03c4\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03bf\u03c5 \u03b1\u03c3\u03ba\u03b5\u03af \u03b7 \u03c3\u03c6\u03b1\u03af\u03c1\u03b1 \u03c3\u03c4\u03b7 \u03b8\u03ad\u03c3\u03b7 \u0392 \u03ba\u03b1\u03c4\u03ac \u03c4\u03b7 \u03b4\u03b9\u03ac\u03c1\u03ba\u03b5\u03b9\u03b1 \u03c4\u03b7\u03c2 \u03c3\u03cd\u03b3\u03ba\u03c1\u03bf\u03c5\u03c3\u03b7\u03c2 \u03bc\u03b5 \u03c4\u03bf \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf, \u03c4\u03cc\u03c4\u03b5:<br \/>\r\n<br \/>\r\n<div id=\"attachment_5758\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-5758\" class=\"size-medium wp-image-5758\" src=\"http:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u0395\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-1-300x216.jpg\" alt=\"\" width=\"300\" height=\"216\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u0395\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-1-300x216.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u0395\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-1.jpg 601w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-5758\" class=\"wp-caption-text\">\u0395\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 3<\/p><\/div><br \/>\r\n<br \/>\r\n<span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c  no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 116px; left: 422px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><\/div><input type='hidden' name='question_id[]' id='qID_3' value='341' \/><input type='hidden' id='answerType341' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-341[]' id='answer-id-1018' class='answer   answerof-341 ' value='1018'   \/><label for='answer-id-1018' id='answer-label-1018' class=' answer'><span>\u039f\u03b9 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 \u03c3\u03c4\u03b9\u03c2 \u03b4\u03cd\u03bf \u03c0\u03b5\u03c1\u03b9\u03c0\u03c4\u03ce\u03c3\u03b5\u03b9\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03af\u03c3\u03b5\u03c2, \u03b3\u03b9\u03b1\u03c4\u03af \u03c0\u03c1\u03cc\u03ba\u03b5\u03b9\u03c4\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03c4\u03b7\u03bd \u03af\u03b4\u03b9\u03b1 \u03c3\u03c6\u03b1\u03af\u03c1\u03b1 \u03bc\u03b5 \u03c4\u03bf \u03af\u03b4\u03b9\u03bf \u03b2\u03ac\u03c1\u03bf\u03c2.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-341[]' id='answer-id-1019' class='answer   answerof-341 ' value='1019'   \/><label for='answer-id-1019' id='answer-label-1019' class=' answer'><span>\u0397 \u03c3\u03c6\u03b1\u03af\u03c1\u03b1 \u03c3\u03c4\u03b7\u03bd \u03c0\u03b5\u03c1\u03af\u03c0\u03c4\u03c9\u03c3\u03b7 \u0391 \u03b1\u03c3\u03ba\u03b5\u03af \u03bc\u03b5\u03b3\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03b1\u03c0\u03cc \u03cc, \u03c4\u03b9 \u03c3\u03c4\u03b7\u03bd \u03c0\u03b5\u03c1\u03af\u03c0\u03c4\u03c9\u03c3\u03b7 \u0392, \u03b3\u03b9\u03b1\u03c4\u03af \u03c3\u03c4\u03b7\u03bd \u03c0\u03b5\u03c1\u03af\u03c0\u03c4\u03c9\u03c3\u03b7 \u0392 \u03c5\u03c0\u03ac\u03c1\u03c7\u03b5\u03b9 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03c0\u03c4\u03ce\u03c3\u03b7\u03c2, \u03b7 \u03bf\u03c0\u03bf\u03af\u03b1 \u03b5\u03bb\u03b1\u03c4\u03c4\u03ce\u03bd\u03b5\u03b9 \u03c4\u03b9\u03c2 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 \u03b1\u03bb\u03bb\u03b7\u03bb\u03b5\u03c0\u03af\u03b4\u03c1\u03b1\u03c3\u03b7\u03c2.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-341[]' id='answer-id-1020' class='answer   answerof-341 ' value='1020'   \/><label for='answer-id-1020' id='answer-label-1020' class=' answer'><span>\u03a3\u03c4\u03b7 \u03b8\u03ad\u03c3\u03b7 \u0392 \u03b1\u03c3\u03ba\u03b5\u03af \u03bc\u03b5\u03b3\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03b1\u03c0\u03cc \u03cc, \u03c4\u03b9 \u03c3\u03c4\u03b7 \u03b8\u03ad\u03c3\u03b7 \u0391, \u03b3\u03b9\u03b1\u03c4\u03af \u03c5\u03c0\u03ac\u03c1\u03c7\u03b5\u03b9 \u03c0\u03c1\u03cc\u03c3\u03b8\u03b5\u03c4\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03b1\u03c0\u03cc \u03c4\u03bf \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf \u03c0\u03ac\u03bd\u03c9 \u03c3\u03c4\u03b7 \u03c3\u03c6\u03b1\u03af\u03c1\u03b1 \u03c0\u03bf\u03c5 \u03c4\u03b7\u03bd \u03b5\u03c0\u03b9\u03b2\u03c1\u03b1\u03b4\u03cd\u03bd\u03b5\u03b9 \u03ba\u03b1\u03b9 \u03c4\u03b7\u03bd \u03c5\u03c0\u03bf\u03c7\u03c1\u03b5\u03ce\u03bd\u03b5\u03b9 \u03bd\u03b1 \u03c3\u03c4\u03b1\u03bc\u03b1\u03c4\u03ae\u03c3\u03b5\u03b9.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-341[]' id='answer-id-1021' class='answer   answerof-341 ' value='1021'   \/><label for='answer-id-1021' id='answer-label-1021' class=' answer'><span>\u039f\u03b9 \u03b4\u03cd\u03bf \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 \u03b4\u03b5\u03bd \u03bc\u03c0\u03bf\u03c1\u03bf\u03cd\u03bd \u03bd\u03b1 \u03c3\u03c5\u03b3\u03ba\u03c1\u03b9\u03b8\u03bf\u03cd\u03bd, \u03b3\u03b9\u03b1\u03c4\u03af \u03b4\u03b5 \u03b4\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03c4\u03bf \u03cd\u03c8\u03bf\u03c2 \u03b1\u03c0\u03cc \u03c4\u03bf \u03bf\u03c0\u03bf\u03af\u03bf \u03b1\u03c6\u03ae\u03bd\u03b5\u03c4\u03b1\u03b9 \u03b7 \u03c3\u03c6\u03b1\u03af\u03c1\u03b1 \u03c3\u03c4\u03b7\u03bd \u03c0\u03b5\u03c1\u03af\u03c0\u03c4\u03c9\u03c3\u03b7 \u0392.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-4' style=';'><div id='questionWrap-4'  class='   watupro-question-id-342'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>4. <\/span>\u03a3\u03c4\u03b7 \u03c3\u03c6\u03b1\u03af\u03c1\u03b1 \u03a3<sub>1<\/sub>, \u03b7 \u03bf\u03c0\u03bf\u03af\u03b1 \u03b1\u03c1\u03c7\u03b9\u03ba\u03ac \u03ae\u03c4\u03b1\u03bd \u03b1\u03ba\u03af\u03bd\u03b7\u03c4\u03b7 \u03c0\u03ac\u03bd\u03c9 \u03c3\u03b5 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf, \u03b1\u03c3\u03ba\u03b5\u03af\u03c4\u03b1\u03b9 \u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 F.\u00a0 \u03a0\u03bf\u03b9\u03b1 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03b1\u03c0\u03cc \u03c4\u03b9\u03c2 (1), (2), (3) \u03ae (4) \u03b8\u03b1 \u03b5\u03c0\u03ad\u03bb\u03b5\u03b3\u03b5\u03c2 \u03ce\u03c3\u03c4\u03b5 \u03b7 \u03a3<sub>1<\/sub> \u03bd\u03b1 \u03ba\u03c4\u03c5\u03c0\u03ae\u03c3\u03b7 \u03c4\u03b7\u03bd \u03b1\u03ba\u03af\u03bd\u03b7\u03c4\u03b7 \u03c3\u03c6\u03b1\u03af\u03c1\u03b1 \u03a3<sub>2<\/sub>;<br \/>\r\n<br \/>\r\n<div id=\"attachment_5760\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-5760\" class=\"size-medium wp-image-5760\" src=\"http:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-3-300x253.jpg\" alt=\"\" width=\"300\" height=\"253\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-3-300x253.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-3.jpg 594w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-5760\" class=\"wp-caption-text\">\u0395\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 4<\/p><\/div><br \/>\r\n<br \/>\r\n<span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c  no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><\/div><input type='hidden' name='question_id[]' id='qID_4' value='342' \/><input type='hidden' id='answerType342' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-342[]' id='answer-id-1022' class='answer   answerof-342 ' value='1022'   \/><label for='answer-id-1022' id='answer-label-1022' class=' answer'><span>(1)<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-342[]' id='answer-id-1023' class='answer   answerof-342 ' value='1023'   \/><label for='answer-id-1023' id='answer-label-1023' class=' answer'><span>(2)<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-342[]' id='answer-id-1024' class='answer   answerof-342 ' value='1024'   \/><label for='answer-id-1024' id='answer-label-1024' class=' answer'><span>(3)<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-342[]' id='answer-id-1025' class='answer   answerof-342 ' value='1025'   \/><label for='answer-id-1025' id='answer-label-1025' class=' answer'><span>(4)<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-5' style=';'><div id='questionWrap-5'  class='   watupro-question-id-343'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>5. <\/span>\u03a3\u03c4\u03b7 \u03bc\u03b9\u03ba\u03c1\u03ae \u03c3\u03c6\u03b1\u03af\u03c1\u03b1 \u03b1\u03c3\u03ba\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03b4\u03cd\u03bf \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 60\u039d \u03ba\u03b1\u03b9 100\u039d \u03c5\u03c0\u03cc \u03b3\u03c9\u03bd\u03af\u03b1 90<sup>0<\/sup> \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5\u03c2. \u03a3\u03b5 \u03c0\u03bf\u03b9\u03b1 \u03c0\u03b5\u03c1\u03af\u03c0\u03c4\u03c9\u03c3\u03b7 \u03b1\u03c0\u03cc \u03c4\u03b9\u03c2 \u0391,\u0392,\u0393 \u03ba\u03b1\u03b9 \u0394 \u03b8\u03b1 \u03b5\u03af\u03c7\u03b1\u03bc\u03b5 \u03b9\u03c3\u03bf\u03c1\u03c1\u03bf\u03c0\u03af\u03b1, \u03b1\u03bd \u03b1\u03c3\u03ba\u03bf\u03cd\u03c3\u03b1\u03bc\u03b5 \u03ba\u03b1\u03b9 \u03bc\u03af\u03b1 \u03b1\u03ba\u03cc\u03bc\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c3\u03c4\u03b7 \u03c3\u03c6\u03b1\u03af\u03c1\u03b1; \u0394\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03cc\u03c4\u03b9 \u03b5\u03c645=1 \u03ba\u03b1\u03b9 \u03b5\u03c630=0,6.<br \/>\r\n<br \/>\r\n<div id=\"attachment_5763\" style=\"width: 397px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-5763\" class=\" wp-image-5763\" src=\"http:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-4-2-300x205.jpg\" alt=\"\" width=\"387\" height=\"264\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-4-2-300x205.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-4-2-768x524.jpg 768w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-4-2-1024x699.jpg 1024w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-4-2.jpg 1039w\" sizes=\"auto, (max-width: 387px) 100vw, 387px\" \/><p id=\"caption-attachment-5763\" class=\"wp-caption-text\">\u0395\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 5<\/p><\/div><br \/>\r\n<br \/>\r\n<span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 92px; left: 346px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 92px; left: 378px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 92px; left: 378px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 92px; left: 378px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 92px; left: 378px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 92px; left: 378px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c  no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><\/div><input type='hidden' name='question_id[]' id='qID_5' value='343' \/><input type='hidden' id='answerType343' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-343[]' id='answer-id-1026' class='answer   answerof-343 ' value='1026'   \/><label for='answer-id-1026' id='answer-label-1026' class=' answer'><span>\u0391<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-343[]' id='answer-id-1027' class='answer   answerof-343 ' value='1027'   \/><label for='answer-id-1027' id='answer-label-1027' class=' answer'><span>\u0392<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-343[]' id='answer-id-1028' class='answer   answerof-343 ' value='1028'   \/><label for='answer-id-1028' id='answer-label-1028' class=' answer'><span>\u0393<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-343[]' id='answer-id-1029' class='answer   answerof-343 ' value='1029'   \/><label for='answer-id-1029' id='answer-label-1029' class=' answer'><span>\u0394<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-6' style=';'><div id='questionWrap-6'  class='   watupro-question-id-344'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>6. <\/span>\u0392\u03c1\u03b5\u03c2 \u03c4\u03b7 \u03c3\u03c9\u03c3\u03c4\u03ae \u03b1\u03c0\u03ac\u03bd\u03c4\u03b7\u03c3\u03b7 \u03ad\u03c7\u03bf\u03bd\u03c4\u03b1\u03c2 \u03c5\u03c0\u03cc\u03c8\u03b7 \u03cc\u03c4\u03b9 \u03b7\u03bc45=\u03c3\u03c5\u03bd45=0,707 \u03ba\u03b1\u03b9 \u03b7\u03bc60=0,9, \u03c3\u03c5\u03bd60=0,5.<br \/>\r\n\u03a3\u03c4\u03b7\u03bd \u03bc\u03b9\u03ba\u03c1\u03ae \u03c3\u03c6\u03b1\u03af\u03c1\u03b1, \u03c0\u03bf\u03c5 \u03b1\u03c1\u03c7\u03b9\u03ba\u03ac \u03ae\u03c4\u03b1\u03bd \u03b1\u03ba\u03af\u03bd\u03b7\u03c4\u03b7, \u03b1\u03c3\u03ba\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03bf\u03b9 \u03b4\u03cd\u03bf \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 \u03c4\u03c9\u03bd 100\u039d \u03ba\u03b1\u03b9 78,6\u039d \u03bc\u03b5 \u03b3\u03c9\u03bd\u03af\u03b5\u03c2 \u03c0\u03bf\u03c5 \u03c6\u03b1\u03af\u03bd\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b7\u03bd \u03b5\u03b9\u03ba\u03cc\u03bd\u03b1. \u0397 \u03c3\u03c6\u03b1\u03af\u03c1\u03b1 \u03b8\u03b1 \u03ba\u03b9\u03bd\u03b7\u03b8\u03b5\u03af:<br \/>\r\n<br \/>\r\n<div id=\"attachment_5767\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-5767\" class=\"size-medium wp-image-5767\" src=\"http:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-5-300x285.jpg\" alt=\"\" width=\"300\" height=\"285\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-5-300x285.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-5.jpg 552w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-5767\" class=\"wp-caption-text\">\u0395\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 6<\/p><\/div><br \/>\r\n<br \/>\r\n<span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 102px; left: 413px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 102px; left: 413px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 102px; left: 413px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><\/div><input type='hidden' name='question_id[]' id='qID_6' value='344' \/><input type='hidden' id='answerType344' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-344[]' id='answer-id-1030' class='answer   answerof-344 ' value='1030'   \/><label for='answer-id-1030' id='answer-label-1030' class=' answer'><span>\u03a0\u03ac\u03bd\u03c9 \u03c3\u03c4\u03bf\u03bd \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf \u03ac\u03be\u03bf\u03bd\u03b1 \u03ba\u03b1\u03c4\u03ac \u03c4\u03b7 \u03b8\u03b5\u03c4\u03b9\u03ba\u03ae \u03c6\u03bf\u03c1\u03ac.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-344[]' id='answer-id-1031' class='answer   answerof-344 ' value='1031'   \/><label for='answer-id-1031' id='answer-label-1031' class=' answer'><span>\u03a0\u03ac\u03bd\u03c9 \u03c3\u03c4\u03bf\u03bd \u03ba\u03b1\u03c4\u03b1\u03ba\u03cc\u03c1\u03c5\u03c6\u03bf \u03ac\u03be\u03bf\u03bd\u03b1 \u03ba\u03b1\u03c4\u03ac \u03c4\u03b7 \u03b8\u03b5\u03c4\u03b9\u03ba\u03ae \u03c6\u03bf\u03c1\u03ac.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-344[]' id='answer-id-1032' class='answer   answerof-344 ' value='1032'   \/><label for='answer-id-1032' id='answer-label-1032' class=' answer'><span>\u0394\u03b9\u03b1\u03b3\u03ce\u03bd\u03b9\u03b1 \u03b4\u03b5\u03be\u03b9\u03ac \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03ba\u03ac\u03c4\u03c9.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-344[]' id='answer-id-1033' class='answer   answerof-344 ' value='1033'   \/><label for='answer-id-1033' id='answer-label-1033' class=' answer'><span>\u0394\u03b9\u03b1\u03b3\u03ce\u03bd\u03b9\u03b1 \u03b4\u03b5\u03be\u03b9\u03ac \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03c0\u03ac\u03bd\u03c9.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-7' style=';'><div id='questionWrap-7'  class='   watupro-question-id-347'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>7. <\/span>\u0397 \u03c3\u03c6\u03b1\u03af\u03c1\u03b1 \u03bc\u03ac\u03b6\u03b1\u03c2 20kg \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03ba\u03af\u03bd\u03b7\u03c4\u03b7, \u03bf\u03c0\u03cc\u03c4\u03b5 \u03b5\u03c0\u03ac\u03bd\u03c9 \u03c4\u03b7\u03c2 \u03b1\u03c3\u03ba\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03bf\u03b9 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 \u03c4\u03b7\u03c2 \u03b5\u03b9\u03ba\u03cc\u03bd\u03b1\u03c2. \u03a4\u03cc\u03c4\u03b5 \u03b7 \u03c3\u03c6\u03b1\u03af\u03c1\u03b1 \u03b8\u03b1 \u03ba\u03b9\u03bd\u03b7\u03b8\u03b5\u03af:<br \/>\r\n<br \/>\r\n<div id=\"attachment_5774\" style=\"width: 319px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-5774\" class=\"wp-image-5774\" src=\"http:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-8-284x300.jpg\" alt=\"\" width=\"309\" height=\"326\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-8-284x300.jpg 284w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-8.jpg 579w\" sizes=\"auto, (max-width: 309px) 100vw, 309px\" \/><p id=\"caption-attachment-5774\" class=\"wp-caption-text\">\u0395\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 7<\/p><\/div><br \/>\r\n<br \/>\r\n<span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c  no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><\/div><input type='hidden' name='question_id[]' id='qID_7' value='347' \/><input type='hidden' id='answerType347' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-347[]' id='answer-id-1042' class='answer   answerof-347 ' value='1042'   \/><label for='answer-id-1042' id='answer-label-1042' class=' answer'><span>\u039a\u03b1\u03c4\u03ac \u03c4\u03b7 \u03b8\u03b5\u03c4\u03b9\u03ba\u03ae \u03ba\u03b1\u03c4\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03ac\u03be\u03bf\u03bd\u03b1 \u03c4\u03c9\u03bd x \u03bc\u03b5 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ae \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-347[]' id='answer-id-1043' class='answer   answerof-347 ' value='1043'   \/><label for='answer-id-1043' id='answer-label-1043' class=' answer'><span>\u039a\u03b1\u03c4\u03ac \u03c4\u03b7\u03bd \u03b1\u03c1\u03bd\u03b7\u03c4\u03b9\u03ba\u03ae \u03ba\u03b1\u03c4\u03b5\u03cd\u03b8\u03c5\u03bd\u03b7 \u03c4\u03bf\u03c5 \u03ac\u03be\u03bf\u03bd\u03b1 \u03c4\u03c9\u03bd y \u03bc\u03b5 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 4m\/s<sup>2<\/sup>.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-347[]' id='answer-id-1044' class='answer   answerof-347 ' value='1044'   \/><label for='answer-id-1044' id='answer-label-1044' class=' answer'><span>\u03a3\u03c4\u03bf\u03bd \u03ac\u03be\u03bf\u03bd\u03b1 \u03c4\u03c9\u03bd x, \u03ba\u03b1\u03c4\u03ac \u03c4\u03b7 \u03b8\u03b5\u03c4\u03b9\u03ba\u03ae \u03ba\u03b1\u03c4\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7, \u03bc\u03b5 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 3,5m\/s<sup>2<\/sup>.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-347[]' id='answer-id-1045' class='answer   answerof-347 ' value='1045'   \/><label for='answer-id-1045' id='answer-label-1045' class=' answer'><span>\u03a3\u03c4\u03bf\u03bd \u03ac\u03be\u03bf\u03bd\u03b1 \u03c4\u03c9\u03bd y, \u03ba\u03b1\u03c4\u03ac \u03c4\u03b7 \u03b8\u03b5\u03c4\u03b9\u03ba\u03ae \u03ba\u03b1\u03c4\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7, \u03bc\u03b5 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 2m\/s<sup>2<\/sup>.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-8' style=';'><div id='questionWrap-8'  class='   watupro-question-id-345'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>8. <\/span>T\u03bf \u03c3\u03ce\u03bc\u03b1 \u03ad\u03c7\u03b5\u03b9 \u03bc\u03ac\u03b6\u03b1 m=20Kg \u03ba\u03b1\u03b9 \u03b1\u03c1\u03c7\u03b9\u03ba\u03ac \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03ba\u03af\u03bd\u03b7\u03c4\u03bf. \u03a0\u03ac\u03bd\u03c9 \u03c4\u03bf\u03c5 \u03b1\u03c3\u03ba\u03b5\u03af\u03c4\u03b1\u03b9 \u03b7 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03b1 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 F<sub>1<\/sub>=80N \u03ba\u03b1\u03b9 \u03bc\u03af\u03b1 \u03ac\u03bb\u03bb\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 F<sub>2<\/sub> \u03ba\u03ac\u03b8\u03b5\u03c4\u03b7 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b7\u03bd\u00a0F<sub>1<\/sub> . \u0393\u03b9\u03b1 \u03bd\u03b1 \u03ba\u03b9\u03bd\u03b7\u03b8\u03b5\u03af \u03c4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03bc\u03b5 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03b1=5m\/s<sup>2<\/sup> \u03ba\u03b1\u03c4\u03ac \u03c4\u03b7\u03bd \u03ba\u03b1\u03c4\u03b5\u03cd\u03b8\u03c5\u03bd\u03c3\u03b7 \u03c0\u03bf\u03c5 \u03c6\u03b1\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03c3\u03c4\u03b7\u03bd \u03b5\u03b9\u03ba\u03cc\u03bd\u03b1, \u03c4\u03cc\u03c4\u03b5 \u03b7 F<sub>2<\/sub> \u03b8\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9:<br \/>\r\n<br \/>\r\n<div id=\"attachment_5768\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-5768\" class=\"wp-image-5768 size-medium\" src=\"http:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-6-300x144.jpg\" alt=\"\" width=\"300\" height=\"144\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-6-300x144.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-6.jpg 418w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-5768\" class=\"wp-caption-text\">\u0395\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 8<\/p><\/div><br \/>\r\n<br \/>\r\n<span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 92px; left: 422px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c  no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 92px; left: 422px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><\/div><input type='hidden' name='question_id[]' id='qID_8' value='345' \/><input type='hidden' id='answerType345' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-345[]' id='answer-id-1034' class='answer   answerof-345 ' value='1034'   \/><label for='answer-id-1034' id='answer-label-1034' class=' answer'><span>100\u039d <\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-345[]' id='answer-id-1035' class='answer   answerof-345 ' value='1035'   \/><label for='answer-id-1035' id='answer-label-1035' class=' answer'><span>60\u039d<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-345[]' id='answer-id-1036' class='answer   answerof-345 ' value='1036'   \/><label for='answer-id-1036' id='answer-label-1036' class=' answer'><span>40\u039d<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-345[]' id='answer-id-1037' class='answer   answerof-345 ' value='1037'   \/><label for='answer-id-1037' id='answer-label-1037' class=' answer'><span>20\u039d<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-9' style=';'><div id='questionWrap-9'  class='   watupro-question-id-346'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>9. <\/span>\u0397 \u03c3\u03c6\u03b1\u03af\u03c1\u03b1 \u03ad\u03c7\u03b5\u03b9 \u03bc\u03ac\u03b6\u03b1 m=8kg \u03b1\u03c1\u03c7\u03b9\u03ba\u03ac \u03ae\u03c4\u03b1\u03bd \u03b1\u03ba\u03af\u03bd\u03b7\u03c4\u03b7 \u03ba\u03b1\u03b9 \u03b1\u03c3\u03ba\u03bf\u03cd\u03bc\u03b5 \u03b5\u03c0\u03ac\u03bd\u03c9 \u03c4\u03b7\u03c2 \u03bc\u03af\u03b1 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 30\u039d. \u0391\u03bd \u03b8\u03ad\u03bb\u03bf\u03c5\u03bc\u03b5 \u03b7 \u03c3\u03c6\u03b1\u03af\u03c1\u03b1 \u03bd\u03b1 \u03b5\u03c0\u03b9\u03c4\u03b1\u03c7\u03c5\u03bd\u03b8\u03b5\u03af \u03bc\u03b5 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03b1=5m\/s<sup>2<\/sup> \u03ba\u03ac\u03b8\u03b5\u03c4\u03b1 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c4\u03c9\u03bd 30\u039d, \u03b5\u03c0\u03af\u03bb\u03b5\u03be\u03b5 \u03c0\u03bf\u03b9\u03b1 \u03b1\u03c0\u03cc \u03c4\u03b9\u03c2 \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 \u0391,\u0392,\u0393 \u03ae \u0394 \u03b8\u03b1 \u03b1\u03c3\u03ba\u03bf\u03cd\u03c3\u03b5\u03c2 \u03c0\u03ac\u03bd\u03c9 \u03c4\u03b7\u03c2 \u03bc\u03b1\u03b6\u03af \u03bc\u03b5 \u03c4\u03b7\u03bd \u03b1\u03c1\u03c7\u03b9\u03ba\u03ae.<br \/>\r\n<br \/>\r\n<div id=\"attachment_5773\" style=\"width: 353px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-5773\" class=\"wp-image-5773\" src=\"http:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-7-1-300x169.jpg\" alt=\"\" width=\"343\" height=\"193\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-7-1-300x169.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-7-1-768x433.jpg 768w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/07\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-7-1.jpg 886w\" sizes=\"auto, (max-width: 343px) 100vw, 343px\" \/><p id=\"caption-attachment-5773\" class=\"wp-caption-text\">\u0395\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 9<\/p><\/div><br \/>\r\n<br \/>\r\n<span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 92px; left: 400px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c  no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 92px; left: 400px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><\/div><input type='hidden' name='question_id[]' id='qID_9' value='346' \/><input type='hidden' id='answerType346' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-346[]' id='answer-id-1038' class='answer   answerof-346 ' value='1038'   \/><label for='answer-id-1038' id='answer-label-1038' class=' answer'><span>\u0391<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-346[]' id='answer-id-1039' class='answer   answerof-346 ' value='1039'   \/><label for='answer-id-1039' id='answer-label-1039' class=' answer'><span>\u0392<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-346[]' id='answer-id-1040' class='answer   answerof-346 ' value='1040'   \/><label for='answer-id-1040' id='answer-label-1040' class=' answer'><span>\u0393<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-346[]' id='answer-id-1041' class='answer   answerof-346 ' value='1041'   \/><label for='answer-id-1041' id='answer-label-1041' class=' answer'><span>\u0394<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-10' style=';'><div id='questionWrap-10'  class='   watupro-question-id-351'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>10. <\/span>\u038c\u03c4\u03b1\u03bd \u03ba\u03ac\u03b8\u03b5\u03c3\u03b1\u03b9 \u03c3\u03b5 \u03ad\u03bd\u03b1 \u03c0\u03b1\u03b3\u03ba\u03ac\u03ba\u03b9, \u03c4\u03bf \u03c0\u03b1\u03b3\u03ba\u03ac\u03ba\u03b9 \u03b1\u03c3\u03ba\u03b5\u03af \u03b5\u03c0\u03ac\u03bd\u03c9 \u03c3\u03bf\u03c5 \u03bc\u03af\u03b1 \u03ba\u03ac\u03b8\u03b5\u03c4\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03b1\u03bd\u03c4\u03af\u03b8\u03b5\u03c4\u03b7 \u03c4\u03bf\u03c5 \u03b2\u03ac\u03c1\u03bf\u03c5\u03c2 \u03c3\u03bf\u03c5. \u03a0\u03bf\u03b9\u03b1 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03ad\u03c7\u03b5\u03b9 \u03c3\u03c7\u03ad\u03c3\u03b7 \u03bc\u03b5 \u03b1\u03c5\u03c4\u03ae \u03c4\u03b7\u03bd \u03ba\u03ac\u03b8\u03b5\u03c4\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03bc\u03b5 \u03b2\u03ac\u03c3\u03b7 \u03c4\u03bf\u03bd \u03c4\u03c1\u03af\u03c4\u03bf \u03bd\u03cc\u03bc\u03bf \u03c4\u03bf\u03c5 \u039d\u03b5\u03cd\u03c4\u03c9\u03bd\u03b1;<\/div><input type='hidden' name='question_id[]' id='qID_10' value='351' \/><input type='hidden' id='answerType351' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-351[]' id='answer-id-1058' class='answer   answerof-351 ' value='1058'   \/><label for='answer-id-1058' id='answer-label-1058' class=' answer'><span>\u0397 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03b2\u03b1\u03c1\u03cd\u03c4\u03b7\u03c4\u03b1\u03c2 \u03c0\u03bf\u03c5 \u03b1\u03c3\u03ba\u03b5\u03af\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03b7 \u0393\u03b7 \u03c0\u03ac\u03bd\u03c9 \u03c3\u03bf\u03c5.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-351[]' id='answer-id-1059' class='answer   answerof-351 ' value='1059'   \/><label for='answer-id-1059' id='answer-label-1059' class=' answer'><span>\u0397 \u03b2\u03b1\u03c1\u03c5\u03c4\u03b9\u03ba\u03ae \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03bf\u03c5 \u03b1\u03c3\u03ba\u03b5\u03af\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03b5\u03c3\u03ad\u03bd\u03b1 \u03c3\u03c4\u03b7 \u0393\u03b7.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-351[]' id='answer-id-1060' class='answer   answerof-351 ' value='1060'   \/><label for='answer-id-1060' id='answer-label-1060' class=' answer'><span>\u0397 \u03ba\u03ac\u03b8\u03b5\u03c4\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03bf\u03c5 \u03b1\u03c3\u03ba\u03b5\u03af\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03b5\u03c3\u03ad\u03bd\u03b1 \u03c3\u03c4\u03bf \u03c0\u03b1\u03b3\u03ba\u03ac\u03ba\u03b9.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-351[]' id='answer-id-1061' class='answer   answerof-351 ' value='1061'   \/><label for='answer-id-1061' id='answer-label-1061' class=' answer'><span>\u039a\u03b1\u03bc\u03af\u03b1 \u03b1\u03c0\u03cc \u03c4\u03b9\u03c2 \u03c0\u03b1\u03c1\u03b1\u03c0\u03ac\u03bd\u03c9.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-11' style=';'><div id='questionWrap-11'  class='   watupro-question-id-352'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>11. <\/span>\u038c\u03c4\u03b1\u03bd \u03c3\u03c4\u03ad\u03ba\u03b5\u03c3\u03b1\u03b9 \u03b1\u03ba\u03af\u03bd\u03b7\u03c4\u03bf\u03c2\/\u03c4\u03b7 \u03c3\u03c4\u03b7 \u03bc\u03ad\u03c3\u03b7 \u03b5\u03bd\u03cc\u03c2 \u03b4\u03c9\u03bc\u03b1\u03c4\u03af\u03bf\u03c5 \u03b1\u03c3\u03ba\u03b5\u03af\u03c2 \u03c3\u03c4\u03bf \u03c0\u03ac\u03c4\u03c9\u03bc\u03b1 \u03bc\u03af\u03b1 \u03ba\u03b1\u03c4\u03b1\u03ba\u03cc\u03c1\u03c5\u03c6\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03ba\u03ac\u03c4\u03c9. \u03a0\u03c1\u03bf\u03ba\u03b1\u03bb\u03b5\u03af \u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03b1\u03c5\u03c4\u03ae \u03bc\u03af\u03b1 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03c0\u03bb\u03b1\u03bd\u03ae\u03c4\u03b7 \u0393\u03b7 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03ba\u03ac\u03c4\u03c9;<\/div><input type='hidden' name='question_id[]' id='qID_11' value='352' \/><input type='hidden' id='answerType352' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-352[]' id='answer-id-1062' class='answer   answerof-352 ' value='1062'   \/><label for='answer-id-1062' id='answer-label-1062' class=' answer'><span>\u039d\u03b1\u03b9, \u03b1\u03bb\u03bb\u03ac \u03b7 \u0393\u03b7 \u03ad\u03c7\u03b5\u03b9 \u03c4\u03b5\u03c1\u03ac\u03c3\u03c4\u03b9\u03b1 \u03bc\u03ac\u03b6\u03b1 \u03ba\u03b1\u03b9 \u03b3\u03b9 \u03b1\u03c5\u03c4\u03cc \u03b7 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03b4\u03b5 \u03b3\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03b1\u03bd\u03c4\u03b9\u03bb\u03b7\u03c0\u03c4\u03ae.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-352[]' id='answer-id-1063' class='answer   answerof-352 ' value='1063'   \/><label for='answer-id-1063' id='answer-label-1063' class=' answer'><span>\u039d\u03b1\u03b9, \u03b1\u03bb\u03bb\u03ac \u03b5\u03c0\u03b9\u03c4\u03b1\u03c7\u03cd\u03bd\u03b5\u03c3\u03b1\u03b9 \u03ba\u03b9 \u03b5\u03c3\u03cd \u03bc\u03b1\u03b6\u03af \u03bc\u03b5 \u03c4\u03b7 \u0393\u03b7, \u03b1\u03c6\u03bf\u03cd \u03b5\u03af\u03c3\u03b1\u03b9 \u03b5\u03c0\u03ac\u03bd\u03c9 \u03c4\u03b7\u03c2 \u03ba\u03c3\u03b9 \u03b4\u03b5\u03bd \u03b1\u03bd\u03c4\u03b9\u03bb\u03b1\u03bc\u03b2\u03ac\u03bd\u03b5\u03c3\u03b1\u03b9 \u03c4\u03b7\u03bd \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03b1\u03c5\u03c4\u03ae.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-352[]' id='answer-id-1064' class='answer   answerof-352 ' value='1064'   \/><label for='answer-id-1064' id='answer-label-1064' class=' answer'><span>\u038c\u03c7\u03b9, \u03b5\u03c0\u03b5\u03b9\u03b4\u03ae \u03c5\u03c0\u03ac\u03c1\u03c7\u03b5\u03b9 \u03c4\u03c1\u03b9\u03b2\u03ae \u03c3\u03c4\u03b1 \u03c0\u03cc\u03b4\u03b9\u03b1.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-352[]' id='answer-id-1065' class='answer   answerof-352 ' value='1065'   \/><label for='answer-id-1065' id='answer-label-1065' class=' answer'><span>\u038c\u03c7\u03b9, \u03b3\u03b9\u03b1\u03c4\u03af \u03b5\u03c0\u03af\u03c3\u03b7\u03c2 \u03ad\u03bb\u03ba\u03b5\u03b9\u03c2 \u03c4\u03b7 \u0393\u03b7 \u03bc\u03b5 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03af\u03c3\u03b7 \u03bc\u03b5 \u03c4\u03b7 \u03b2\u03b1\u03c1\u03c5\u03c4\u03b9\u03ba\u03ae.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-12' style=';'><div id='questionWrap-12'  class='   watupro-question-id-348'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>12. <\/span>\u03a4\u03b1 \u03b4\u03cd\u03bf \u03c3\u03ce\u03bc\u03b1\u03c4\u03b1 \u0391 \u03ba\u03b1\u03b9 \u0392 \u03b2\u03c1\u03af\u03c3\u03ba\u03bf\u03bd\u03c4\u03b1\u03b9 \u03c3\u03b5 \u03b5\u03c0\u03b1\u03c6\u03ae \u03ba\u03b1\u03b9 \u03b1\u03ba\u03af\u03bd\u03b7\u03c4\u03b1 \u03c0\u03ac\u03bd\u03c9 \u03c3\u03b5 \u03bb\u03b5\u03af\u03bf \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf \u03ba\u03b1\u03b9 \u03b7 \u03bc\u03ac\u03b6\u03b1 \u03c4\u03bf\u03c5 \u0392 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b4\u03b9\u03c0\u03bb\u03ac\u03c3\u03b9\u03b1 \u03b1\u03c0\u03cc \u03c4\u03b7 \u03bc\u03ac\u03b6\u03b1 \u03c4\u03bf\u03c5 \u0391. \u0394\u03b7\u03bb\u03b1\u03b4\u03ae \u03ad\u03c7\u03bf\u03c5\u03bd \u03bc\u03ac\u03b6\u03b5\u03c2 m \u03ba\u03b1\u03b9 2m \u03b1\u03bd\u03c4\u03af\u03c3\u03c4\u03bf\u03b9\u03c7\u03b1. \u0391\u03c3\u03ba\u03bf\u03cd\u03bc\u03b5 \u03c3\u03c4\u03bf \u0391 \u03bc\u03af\u03b1 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03b1 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 F, \u03bf\u03c0\u03cc\u03c4\u03b5 \u03b1\u03c1\u03c7\u03af\u03b6\u03b5\u03b9 \u03c4\u03bf \u03c3\u03cd\u03c3\u03c4\u03b7\u03bc\u03b1 \u03bd\u03b1 \u03ba\u03b9\u03bd\u03b5\u03af\u03c4\u03b1\u03b9. \u0397 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03bf\u03c5 \u03b1\u03c3\u03ba\u03b5\u03af \u03c4\u03bf \u0391 \u03c0\u03ac\u03bd\u03c9 \u03c3\u03c4\u03bf \u0392 \u03b8\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9:<br \/>\r\n<br \/>\r\n<div id=\"attachment_5775\" style=\"width: 346px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-5775\" class=\"wp-image-5775\" src=\"http:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-9-300x108.jpg\" alt=\"\" width=\"336\" height=\"121\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-9-300x108.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-9.jpg 553w\" sizes=\"auto, (max-width: 336px) 100vw, 336px\" \/><p id=\"caption-attachment-5775\" class=\"wp-caption-text\">\u0395\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 12<\/p><\/div><br \/>\r\n<br \/>\r\n<span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 92px; left: 404px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c  no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 92px; left: 404px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><\/div><input type='hidden' name='question_id[]' id='qID_12' value='348' \/><input type='hidden' id='answerType348' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-348[]' id='answer-id-1046' class='answer   answerof-348 ' value='1046'   \/><label for='answer-id-1046' id='answer-label-1046' class=' answer'><span>2F<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-348[]' id='answer-id-1047' class='answer   answerof-348 ' value='1047'   \/><label for='answer-id-1047' id='answer-label-1047' class=' answer'><span>F<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-348[]' id='answer-id-1048' class='answer   answerof-348 ' value='1048'   \/><label for='answer-id-1048' id='answer-label-1048' class=' answer'><span>F\/2<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-348[]' id='answer-id-1049' class='answer   answerof-348 ' value='1049'   \/><label for='answer-id-1049' id='answer-label-1049' class=' answer'><span>2F\/3<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-13' style=';'><div id='questionWrap-13'  class='   watupro-question-id-349'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>13. <\/span>\u03a4\u03b1 \u03b4\u03cd\u03bf \u03c3\u03ce\u03bc\u03b1\u03c4\u03b1, \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03bf \u03af\u03b4\u03b9\u03bf \u03c5\u03bb\u03b9\u03ba\u03cc, \u03ad\u03c7\u03bf\u03c5\u03bd \u03c4\u03b7\u03bd \u03af\u03b4\u03b9\u03b1 \u03bc\u03ac\u03b6\u03b1, \u03b1\u03bb\u03bb\u03ac \u03bf\u03b9 \u03b4\u03b9\u03b1\u03c3\u03c4\u03ac\u03c3\u03b5\u03b9\u03c2 \u03c4\u03b7\u03c2 \u03b2\u03ac\u03c3\u03b7\u03c2 \u03c4\u03bf\u03c5 \u0391 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c0\u03b9\u03bf \u03bc\u03b9\u03ba\u03c1\u03ad\u03c2 \u03b1\u03c0\u03cc \u03c4\u03bf\u03c5 \u0392. \u03a4\u03b1 \u03c3\u03ce\u03bc\u03b1\u03c4\u03b1 \u03bf\u03bb\u03b9\u03c3\u03b8\u03b1\u03af\u03bd\u03bf\u03c5\u03bd \u03c0\u03ac\u03bd\u03c9 \u03c3\u03c4\u03b7\u03bd \u03af\u03b4\u03b9\u03b1 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03b1 \u03b5\u03c0\u03b9\u03c6\u03ac\u03bd\u03b5\u03b9\u03b1 \u03bc\u03b5 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b5\u03c2 \u03c5<sub>1<\/sub> \u03ba\u03b1\u03b9 \u03c5<sub>2<\/sub> \u03b1\u03bd\u03c4\u03af\u03c3\u03c4\u03bf\u03b9\u03c7\u03b1, \u03b1\u03bb\u03bb\u03ac \u03bc\u03b5 \u03c5<sub>2<\/sub>&gt;\u03c5<sub>1<\/sub>. \u03a4\u03b1 \u03b4\u03cd\u03bf \u03c3\u03ce\u03bc\u03b1\u03c4\u03b1 \u03ad\u03c7\u03bf\u03c5\u03bd \u03c4\u03c1\u03b9\u03b2\u03ad\u03c2 \u03bc\u03b5 \u03c4\u03b7\u03bd \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03b1 \u03b5\u03c0\u03b9\u03c6\u03ac\u03bd\u03b5\u03b9\u03b1:<br \/>\r\n<br \/>\r\n<div id=\"attachment_5777\" style=\"width: 332px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-5777\" class=\"wp-image-5777\" src=\"http:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-2-300x83.jpg\" alt=\"\" width=\"322\" height=\"89\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-2-300x83.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-2-768x212.jpg 768w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-2.jpg 769w\" sizes=\"auto, (max-width: 322px) 100vw, 322px\" \/><p id=\"caption-attachment-5777\" class=\"wp-caption-text\">\u0395\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 13<\/p><\/div><br \/>\r\n<br \/>\r\n<span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c  no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><\/div><input type='hidden' name='question_id[]' id='qID_13' value='349' \/><input type='hidden' id='answerType349' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-349[]' id='answer-id-1050' class='answer   answerof-349 ' value='1050'   \/><label for='answer-id-1050' id='answer-label-1050' class=' answer'><span>\u038a\u03b4\u03b9\u03b5\u03c2<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-349[]' id='answer-id-1051' class='answer   answerof-349 ' value='1051'   \/><label for='answer-id-1051' id='answer-label-1051' class=' answer'><span>\u0397 \u03c4\u03c1\u03b9\u03b2\u03ae \u03c4\u03bf\u03c5 \u0391 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b5\u03b3\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03b7 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03c4\u03c1\u03b9\u03b2\u03ae \u03c4\u03bf\u03c5 \u0392<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-349[]' id='answer-id-1052' class='answer   answerof-349 ' value='1052'   \/><label for='answer-id-1052' id='answer-label-1052' class=' answer'><span>\u0397 \u03c4\u03c1\u03b9\u03b2\u03ae \u03c4\u03bf\u03c5 \u0392 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b5\u03b3\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03b7 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03c4\u03c1\u03b9\u03b2\u03ae \u03c4\u03bf\u03c5 \u0391<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-349[]' id='answer-id-1053' class='answer   answerof-349 ' value='1053'   \/><label for='answer-id-1053' id='answer-label-1053' class=' answer'><span>\u0394\u03b5\u03bd \u03bc\u03c0\u03bf\u03c1\u03bf\u03cd\u03bc\u03b5 \u03bd\u03b1 \u03c3\u03c5\u03b3\u03ba\u03c1\u03af\u03bd\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b9\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ad\u03c2 \u03c4\u03bf\u03c5\u03c2, \u03b3\u03b9\u03b1\u03c4\u03af \u03b4\u03b5 \u03b3\u03bd\u03c9\u03c1\u03af\u03b6\u03bf\u03c5\u03bc\u03b5 \u03c4\u03bf \u03c3\u03c5\u03bd\u03c4\u03b5\u03bb\u03b5\u03c3\u03c4\u03ae \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-14' style=';'><div id='questionWrap-14'  class='   watupro-question-id-354'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>14. <\/span>\u0388\u03bd\u03b1 \u03ba\u03bf\u03c1\u03af\u03c4\u03c3\u03b9 \u03b1\u03c3\u03ba\u03b5\u03af \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03b1 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 60\u039d \u03c0\u03ac\u03bd\u03c9 \u03c3\u03b5 \u03ad\u03bd\u03b1 \u03ba\u03b9\u03b2\u03ce\u03c4\u03b9\u03bf \u03b2\u03ac\u03c1\u03bf\u03c5\u03c2 150\u039d \u03b3\u03b9\u03b1 \u03bd\u03b1 \u03c4\u03bf \u03c3\u03cd\u03c1\u03b5\u03b9 \u03bc\u03b5 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ae \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03bc\u03af\u03b1 \u03ac\u03ba\u03c1\u03b7 \u03c4\u03bf\u03c5 \u03b4\u03c9\u03bc\u03b1\u03c4\u03af\u03bf\u03c5 \u03c3\u03c4\u03b7\u03bd \u03ac\u03bb\u03bb\u03b7. \u03a0\u03bf\u03b9\u03bf\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bf \u03c3\u03c5\u03bd\u03c4\u03b5\u03bb\u03b5\u03c3\u03c4\u03ae\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 \u03bf\u03bb\u03af\u03c3\u03b8\u03b7\u03c3\u03b7\u03c2;<\/div><input type='hidden' name='question_id[]' id='qID_14' value='354' \/><input type='hidden' id='answerType354' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-354[]' id='answer-id-1070' class='answer   answerof-354 ' value='1070'   \/><label for='answer-id-1070' id='answer-label-1070' class=' answer'><span>1<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-354[]' id='answer-id-1071' class='answer   answerof-354 ' value='1071'   \/><label for='answer-id-1071' id='answer-label-1071' class=' answer'><span>0,8<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-354[]' id='answer-id-1072' class='answer   answerof-354 ' value='1072'   \/><label for='answer-id-1072' id='answer-label-1072' class=' answer'><span>0,4<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-354[]' id='answer-id-1073' class='answer   answerof-354 ' value='1073'   \/><label for='answer-id-1073' id='answer-label-1073' class=' answer'><span>0,2<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-15' style=';'><div id='questionWrap-15'  class='   watupro-question-id-350'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>15. <\/span>\u03a0\u03bf\u03b9\u03b5\u03c2 \u03b1\u03c0\u03cc \u03c4\u03b9\u03c2 \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u03c0\u03c1\u03bf\u03c4\u03ac\u03c3\u03b5\u03b9\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c3\u03c9\u03c3\u03c4\u03ad\u03c2; \u03a3\u03c4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03b1\u03c3\u03ba\u03b5\u03af\u03c4\u03b1\u03b9 \u03b7 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03b1 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 F, \u03b7 \u03bf\u03c0\u03bf\u03af\u03b1 \u03b1\u03c5\u03be\u03ac\u03bd\u03b5\u03c4\u03b1\u03b9 \u03c0\u03c1\u03bf\u03bf\u03b4\u03b5\u03c5\u03c4\u03b9\u03ba\u03ac \u03b1\u03c0\u03cc 0\u039d \u03ad\u03c9\u03c2 30\u039d, \u03bf\u03c0\u03cc\u03c4\u03b5 \u03b1\u03c1\u03c7\u03af\u03b6\u03b5\u03b9 \u03c4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03bd\u03b1 \u03bf\u03bb\u03b9\u03c3\u03b8\u03b1\u03af\u03bd\u03b5\u03b9.<br \/>\r\n<br \/>\r\n<div id=\"attachment_5778\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-5778\" class=\"wp-image-5778 size-medium\" src=\"http:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-10-300x103.jpg\" alt=\"\" width=\"300\" height=\"103\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-10-300x103.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-10.jpg 392w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-5778\" class=\"wp-caption-text\">\u0395\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 15<\/p><\/div><br \/>\r\n<br \/>\r\n<span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 92px; left: 422px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 92px; left: 422px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c  no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 92px; left: 422px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><\/div><input type='hidden' name='question_id[]' id='qID_15' value='350' \/><input type='hidden' id='answerType350' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-350[]' id='answer-id-1054' class='answer   answerof-350 watupro_max_selections-2' value='1054'  onclick='return WatuPRO.maxSelections(350,2, this);' \/><label for='answer-id-1054' id='answer-label-1054' class=' answer'><span>\u0397 \u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae \u03c4\u03c1\u03b9\u03b2\u03ae \u03b5\u03af\u03bd\u03b1\u03b9 30\u039d.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-350[]' id='answer-id-1055' class='answer   answerof-350 watupro_max_selections-2' value='1055'  onclick='return WatuPRO.maxSelections(350,2, this);' \/><label for='answer-id-1055' id='answer-label-1055' class=' answer'><span>\u0391\u03bd \u03b4\u03b9\u03b1\u03c4\u03b7\u03c1\u03ae\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 F \u03af\u03c3\u03b7 \u03bc\u03b5 30\u039d, \u03c4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03b8\u03b1 \u03ba\u03b9\u03bd\u03b7\u03b8\u03b5\u03af \u03bc\u03b5 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ae \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-350[]' id='answer-id-1056' class='answer   answerof-350 watupro_max_selections-2' value='1056'  onclick='return WatuPRO.maxSelections(350,2, this);' \/><label for='answer-id-1056' id='answer-label-1056' class=' answer'><span>\u0397 \u03c4\u03c1\u03b9\u03b2\u03ae \u03bf\u03bb\u03af\u03c3\u03b8\u03b7\u03c3\u03b7\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b9\u03ba\u03c1\u03cc\u03c4\u03b5\u03c1\u03b7 \u03b1\u03c0\u03cc 30\u039d.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-350[]' id='answer-id-1057' class='answer   answerof-350 watupro_max_selections-2' value='1057'  onclick='return WatuPRO.maxSelections(350,2, this);' \/><label for='answer-id-1057' id='answer-label-1057' class=' answer'><span>\u038c\u03c4\u03b1\u03bd \u03b7 F \u03c0\u03ac\u03c1\u03b5\u03b9 \u03c4\u03b7 \u03c4\u03b9\u03bc\u03ae 20\u039d, \u03c4\u03cc\u03c4\u03b5 \u03b7 \u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae \u03c4\u03c1\u03b9\u03b2\u03ae \u03b5\u03af\u03bd\u03b1\u03b9 \u03b5\u03c0\u03af\u03c3\u03b7\u03c2 20\u039d.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-16' style=';'><div id='questionWrap-16'  class='   watupro-question-id-353'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>16. <\/span>\u03a4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c3\u03b5 \u03b9\u03c3\u03bf\u03c1\u03c1\u03bf\u03c0\u03af\u03b1 \u03c0\u03ac\u03bd\u03c9 \u03c3\u03c4\u03bf \u03ba\u03b5\u03ba\u03bb\u03b9\u03bc\u03ad\u03bd\u03bf \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf \u03bc\u03b5 \u03b3\u03c9\u03bd\u03af\u03b1 \u03ba\u03bb\u03af\u03c3\u03b7\u03c2 \u03b8. \u039f\u03b9 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 \u03c0\u03bf\u03c5 \u03b1\u03c3\u03ba\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03b5\u03c0\u03ac\u03bd\u03c9 \u03c4\u03bf\u03c5 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c4\u03bf \u03b2\u03ac\u03c1\u03bf\u03c2, \u03b7 \u03ba\u03ac\u03b8\u03b5\u03c4\u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c4\u03bf\u03c5 \u03b5\u03c0\u03b9\u03c0\u03ad\u03b4\u03bf\u03c5 \u03ba\u03b1\u03b9 \u03b7 \u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae \u03c4\u03c1\u03b9\u03b2\u03ae. \u03a0\u03bf\u03b9\u03b5\u03c2 \u03b1\u03c0\u03cc \u03c4\u03b9\u03c2 \u03c0\u03b1\u03c1\u03b1\u03ba\u03ac\u03c4\u03c9 \u03c3\u03c7\u03ad\u03c3\u03b5\u03b9\u03c2 \u03b9\u03c3\u03c7\u03cd\u03bf\u03c5\u03bd \u03c0\u03ac\u03bd\u03c4\u03b1 \u03b1\u03bd\u03b5\u03be\u03ac\u03c1\u03c4\u03b7\u03c4\u03b1 \u03c4\u03b7\u03c2 \u03b3\u03c9\u03bd\u03af\u03b1\u03c2 \u03b8 \u03c4\u03bf\u03c5 \u03ba\u03b5\u03ba\u03bb\u03b9\u03bc\u03ad\u03bd\u03bf\u03c5 \u03b5\u03c0\u03b9\u03c0\u03ad\u03b4\u03bf\u03c5;<br \/>\r\n<br \/>\r\n<div id=\"attachment_5787\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-5787\" class=\"wp-image-5787 size-medium\" src=\"http:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-11-300x233.jpg\" alt=\"\" width=\"300\" height=\"233\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-11-300x233.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-11.jpg 586w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-5787\" class=\"wp-caption-text\">\u0395\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 16<\/p><\/div><br \/>\r\n<br \/>\r\n<span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 92px; left: 422px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c  no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer; top: 92px; left: 422px;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><\/div><input type='hidden' name='question_id[]' id='qID_16' value='353' \/><input type='hidden' id='answerType353' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-353[]' id='answer-id-1066' class='answer   answerof-353 ' value='1066'   \/><label for='answer-id-1066' id='answer-label-1066' class=' answer'><span>mg\u2265N \u03ba\u03b1\u03b9 mg\u2265T<sub>\u03c3<\/sub><\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-353[]' id='answer-id-1067' class='answer   answerof-353 ' value='1067'   \/><label for='answer-id-1067' id='answer-label-1067' class=' answer'><span>mg\u2264N \u03ba\u03b1\u03b9 mg\u2264T<sub>\u03c3<\/sub><\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-353[]' id='answer-id-1068' class='answer   answerof-353 ' value='1068'   \/><label for='answer-id-1068' id='answer-label-1068' class=' answer'><span>T<sub>\u03c3<\/sub>=N<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-353[]' id='answer-id-1069' class='answer   answerof-353 ' value='1069'   \/><label for='answer-id-1069' id='answer-label-1069' class=' answer'><span>T<sub>\u03c3<\/sub>+N=mg<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-17' style=';'><div id='questionWrap-17'  class='   watupro-question-id-355'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>17. <\/span>\u0391\u03bd \u03c3\u03b5 \u03ad\u03bd\u03b1 \u03c3\u03ce\u03bc\u03b1 \u03bc\u03ac\u03b6\u03b1\u03c2 5kg \u03b1\u03c3\u03ba\u03ae\u03c3\u03bf\u03c5\u03bc\u03b5 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03b1 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 100\u039d, \u03b1\u03c5\u03c4\u03cc \u03b8\u03b1 \u03ba\u03b9\u03bd\u03b7\u03b8\u03b5\u03af \u03bc\u03b5 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ae \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03c0\u03ac\u03bd\u03c9 \u03c3\u03b5 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03b1 \u03b5\u03c0\u03b9\u03c6\u03ac\u03bd\u03b5\u03b9\u03b1. \u0391\u03bd \u03b1\u03c3\u03ba\u03ae\u03c3\u03bf\u03c5\u03bc\u03b5 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03b1 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 120\u039d, \u03c4\u03cc\u03c4\u03b5:<\/div><input type='hidden' name='question_id[]' id='qID_17' value='355' \/><input type='hidden' id='answerType355' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-355[]' id='answer-id-1074' class='answer   answerof-355 ' value='1074'   \/><label for='answer-id-1074' id='answer-label-1074' class=' answer'><span>\u03a4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03b8\u03b1 \u03c3\u03c5\u03bd\u03b5\u03c7\u03af\u03c3\u03b5\u03b9 \u03bd\u03b1 \u03ba\u03b9\u03bd\u03b5\u03af\u03c4\u03b1\u03b9 \u03bc\u03b5 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ae \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1, \u03b1\u03bb\u03bb\u03ac \u03c0\u03b9\u03bf \u03bc\u03b5\u03b3\u03ac\u03bb\u03b7 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03c0\u03c1\u03bf\u03b7\u03b3\u03bf\u03cd\u03bc\u03b5\u03bd\u03b7.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-355[]' id='answer-id-1075' class='answer   answerof-355 ' value='1075'   \/><label for='answer-id-1075' id='answer-label-1075' class=' answer'><span>\u0398\u03b1 \u03b5\u03c0\u03b9\u03c4\u03b1\u03c7\u03c5\u03bd\u03b8\u03b5\u03af \u03bc\u03b5 4m\/s<sup>2<\/sup>.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-355[]' id='answer-id-1076' class='answer   answerof-355 ' value='1076'   \/><label for='answer-id-1076' id='answer-label-1076' class=' answer'><span>\u0391\u03c5\u03be\u03ac\u03bd\u03b5\u03c4\u03b1\u03b9 \u03b7 \u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae \u03c4\u03c1\u03b9\u03b2\u03ae \u03ba\u03b1\u03c4\u03ac 20\u039d.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-355[]' id='answer-id-1077' class='answer   answerof-355 ' value='1077'   \/><label for='answer-id-1077' id='answer-label-1077' class=' answer'><span>\u0397 \u03bf\u03c1\u03b9\u03b1\u03ba\u03ae \u03c4\u03c1\u03b9\u03b2\u03ae \u03c0\u03b1\u03af\u03c1\u03bd\u03b5\u03b9 \u03c4\u03b9\u03bc\u03ae 120\u039d.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-18' style=';'><div id='questionWrap-18'  class='   watupro-question-id-356'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>18. <\/span>\u03a3\u03b5 \u03ad\u03bd\u03b1 \u03c3\u03ce\u03bc\u03b1 \u03b1\u03c3\u03ba\u03b5\u03af\u03c4\u03b1\u03b9 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03b1 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 100\u039d, \u03bf\u03c0\u03cc\u03c4\u03b5 \u03c4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03ba\u03b9\u03bd\u03b5\u03af\u03c4\u03b1\u03b9 \u03bc\u03b5 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ae \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03c3\u03b5 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf. \u0391\u03bd \u03ba\u03b1\u03c4\u03b1\u03c1\u03b3\u03ae\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b7 \u03b4\u03c5\u03bd\u03b1\u03bc\u03b7 \u03c4\u03c9\u03bd 100\u039d, \u03c4\u03cc\u03c4\u03b5:<\/div><input type='hidden' name='question_id[]' id='qID_18' value='356' \/><input type='hidden' id='answerType356' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-356[]' id='answer-id-1078' class='answer   answerof-356 ' value='1078'   \/><label for='answer-id-1078' id='answer-label-1078' class=' answer'><span>\u0398\u03b1 \u03c3\u03c5\u03bd\u03b5\u03c7\u03af\u03c3\u03b5\u03b9 \u03bd\u03b1 \u03ba\u03b9\u03bd\u03b5\u03af\u03c4\u03b1\u03b9 \u03bc\u03b5 \u03c4\u03b7\u03bd \u03af\u03b4\u03b9\u03b1 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03bb\u03cc\u03b3\u03c9 \u03b1\u03b4\u03c1\u03ac\u03bd\u03b5\u03b9\u03b1\u03c2.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-356[]' id='answer-id-1079' class='answer   answerof-356 ' value='1079'   \/><label for='answer-id-1079' id='answer-label-1079' class=' answer'><span>\u03a4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03b8\u03b1 \u03c3\u03c4\u03b1\u03bc\u03b1\u03c4\u03ae\u03c3\u03b5\u03b9 \u03bb\u03cc\u03b3\u03c9 \u03c3\u03c4\u03b1\u03c4\u03b9\u03ba\u03ae\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-356[]' id='answer-id-1080' class='answer   answerof-356 ' value='1080'   \/><label for='answer-id-1080' id='answer-label-1080' class=' answer'><span>\u03a4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03b8\u03b1 \u03b1\u03c1\u03c7\u03af\u03c3\u03b5\u03b9 \u03bd\u03b1 \u03b5\u03c0\u03b9\u03b2\u03c1\u03b1\u03b4\u03cd\u03bd\u03b5\u03c4\u03b1\u03b9 \u03b3\u03b9\u03b1\u03c4\u03af \u03bc\u03b5\u03b9\u03ce\u03b8\u03b7\u03ba\u03b5 \u03b7 \u03bf\u03c1\u03b9\u03b1\u03ba\u03ae \u03c4\u03c1\u03b9\u03b2\u03ae.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-356[]' id='answer-id-1081' class='answer   answerof-356 ' value='1081'   \/><label for='answer-id-1081' id='answer-label-1081' class=' answer'><span>\u0397 \u03c4\u03c1\u03b9\u03b2\u03ae \u03bf\u03bb\u03af\u03c3\u03b8\u03b7\u03c3\u03b7\u03c2 \u03b8\u03b1 \u03b5\u03c0\u03b9\u03b2\u03c1\u03b1\u03b4\u03cd\u03bd\u03b5\u03b9 \u03c4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03bc\u03ad\u03c7\u03c1\u03b9 \u03bd\u03b1 \u03c4\u03bf \u03c3\u03c4\u03b1\u03bc\u03b1\u03c4\u03ae\u03c3\u03b5\u03b9.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-19' style=';'><div id='questionWrap-19'  class='   watupro-question-id-357'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>19. <\/span>\u03a4\u03b1 \u03b4\u03cd\u03bf \u03c3\u03ce\u03bc\u03b1\u03c4\u03b1 \u0391 \u03ba\u03b1\u03b9 \u0392 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03ba\u03af\u03bd\u03b7\u03c4\u03b1 \u03c0\u03ac\u03bd\u03c9 \u03c3\u03b5 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf. \u03a4\u03c1\u03b1\u03b2\u03ac\u03bc\u03b5 \u03b1\u03c0\u03cc\u03c4\u03bf\u03bc\u03b1 \u03c4\u03bf \u03c3\u03ce\u03bc\u03b1 \u0391 \u03bc\u03b5 \u03bc\u03af\u03b1 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 F, \u03bf\u03c0\u03cc\u03c4\u03b5 \u03c4\u03bf \u03c3\u03ce\u03bc\u03b1 \u0392 \u03b3\u03bb\u03c5\u03c3\u03c4\u03c1\u03ac\u03b5\u03b9 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03c0\u03af\u03c3\u03c9, \u03c0\u03ac\u03bd\u03c9 \u03c3\u03c4\u03b7\u03bd \u03b5\u03c0\u03b9\u03c6\u03ac\u03bd\u03b5\u03b9\u03b1 \u03c4\u03bf\u03c5 \u03c3\u03ce\u03bc\u03b1\u03c4\u03bf\u03c2 \u0391. \u0391\u03c5\u03c4\u03cc \u03c3\u03c5\u03bc\u03b2\u03b1\u03af\u03bd\u03b5\u03b9 \u03b3\u03b9\u03b1\u03c4\u03af:<br \/>\r\n<br \/>\r\n<div id=\"attachment_5789\" style=\"width: 359px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-5789\" class=\" wp-image-5789\" src=\"http:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-12-300x92.jpg\" alt=\"\" width=\"349\" height=\"107\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-12-300x92.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-12.jpg 754w\" sizes=\"auto, (max-width: 349px) 100vw, 349px\" \/><p id=\"caption-attachment-5789\" class=\"wp-caption-text\">\u0395\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 19<\/p><\/div><\/div><input type='hidden' name='question_id[]' id='qID_19' value='357' \/><input type='hidden' id='answerType357' value='checkbox'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-357[]' id='answer-id-1082' class='answer   answerof-357 watupro_max_selections-2' value='1082'  onclick='return WatuPRO.maxSelections(357,2, this);' \/><label for='answer-id-1082' id='answer-label-1082' class=' answer'><span>\u0397 \u03bf\u03c1\u03b9\u03b1\u03ba\u03ae \u03c4\u03c1\u03b9\u03b2\u03ae \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03c9\u03bd \u0391 \u03ba\u03b1\u03b9 \u0392 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b5\u03b3\u03ac\u03bb\u03b7 \u03ba\u03b1\u03b9 \u03ba\u03c1\u03b1\u03c4\u03ac\u03b5\u03b9 \u03c4\u03bf \u0392 \u03c3\u03c4\u03b7 \u03b8\u03ad\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03b5\u03bd\u03ce \u03c4\u03bf \u0391 \u03c6\u03b5\u03cd\u03b3\u03b5\u03b9 \u03bc\u03c0\u03c1\u03bf\u03c3\u03c4\u03ac.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-357[]' id='answer-id-1083' class='answer   answerof-357 watupro_max_selections-2' value='1083'  onclick='return WatuPRO.maxSelections(357,2, this);' \/><label for='answer-id-1083' id='answer-label-1083' class=' answer'><span>\u039f \u03c3\u03c5\u03bd\u03c4\u03b5\u03bb\u03b5\u03c3\u03c4\u03ae\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5 \u0391 \u03ba\u03b1\u03b9 \u0392 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b9\u03ba\u03c1\u03cc\u03c2 \u03ba\u03b1\u03b9 \u03b4\u03b5\u03bd \u03bc\u03c0\u03bf\u03c1\u03b5\u03af \u03bd\u03b1 \u03c3\u03c5\u03b3\u03ba\u03c1\u03b1\u03c4\u03ae\u03c3\u03b5\u03b9 \u03c4\u03bf \u0392 \u03c0\u03ac\u03bd\u03c9 \u03c3\u03c4\u03bf \u0391.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-357[]' id='answer-id-1084' class='answer   answerof-357 watupro_max_selections-2' value='1084'  onclick='return WatuPRO.maxSelections(357,2, this);' \/><label for='answer-id-1084' id='answer-label-1084' class=' answer'><span>\u0394\u03b5\u03bd \u03c5\u03c0\u03ac\u03c1\u03c7\u03b5\u03b9 \u03b5\u03c0\u03b1\u03c1\u03ba\u03ae\u03c2 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03bd\u03b1 \u03b5\u03c0\u03b9\u03c4\u03b1\u03c7\u03cd\u03bd\u03b5\u03b9 \u03c4\u03bf \u03c0\u03ac\u03bd\u03c9 \u03c3\u03ce\u03bc\u03b1 \u03bc\u03b5 \u03c4\u03b7\u03bd \u03af\u03b4\u03b9\u03b1 \u03b5\u03c0\u03b9\u03c4\u03ac\u03c7\u03c5\u03bd\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03ba\u03ac\u03c4\u03c9.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='checkbox' name='answer-357[]' id='answer-id-1085' class='answer   answerof-357 watupro_max_selections-2' value='1085'  onclick='return WatuPRO.maxSelections(357,2, this);' \/><label for='answer-id-1085' id='answer-label-1085' class=' answer'><span>\u039f \u03c3\u03c5\u03bd\u03c4\u03b5\u03bb\u03b5\u03c3\u03c4\u03ae\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 \u03bf\u03bb\u03af\u03c3\u03b8\u03b7\u03c3\u03b7\u03c2 \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5 \u0391 \u03ba\u03b1\u03b9 \u0392 \u03c0\u03c1\u03bf\u03ba\u03b1\u03bb\u03b5\u03af \u03c4\u03b7 \u03c3\u03c7\u03b5\u03c4\u03b9\u03ba\u03ae \u03ba\u03af\u03bd\u03b7\u03c3\u03b7 \u03c4\u03c9\u03bd \u03b4\u03cd\u03bf \u03c3\u03c9\u03bc\u03ac\u03c4\u03c9\u03bd.<\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div><\/div><div class='watu-question ' id='question-20' style=';'><div id='questionWrap-20'  class='   watupro-question-id-358'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>20. <\/span>\u0391\u03c0\u03cc \u03c4\u03b7 \u03b2\u03ac\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03ba\u03b5\u03ba\u03bb\u03b9\u03bc\u03ad\u03bd\u03bf\u03c5 \u03b5\u03c0\u03b9\u03c0\u03ad\u03b4\u03bf\u03c5 \u03b5\u03ba\u03c4\u03bf\u03be\u03b5\u03cd\u03bf\u03c5\u03bc\u03b5 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03c0\u03ac\u03bd\u03c9 \u03ad\u03bd\u03b1 \u03c3\u03ce\u03bc\u03b1 \u03bc\u03b5 \u03b1\u03c1\u03c7\u03b9\u03ba\u03ae \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03c5<sub>0<\/sub>. \u03a4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03b4\u03b9\u03b1\u03bd\u03cd\u03b5\u03b9 \u03ad\u03bd\u03b1 \u03bc\u03ad\u03b3\u03b9\u03c3\u03c4\u03bf \u03bc\u03ae\u03ba\u03bf\u03c2 \u03b5\u03c0\u03af \u03c4\u03bf\u03c5 \u03b5\u03c0\u03b9\u03c0\u03ad\u03b4\u03bf\u03c5 \u03ba\u03b1\u03b9 \u03c3\u03c4\u03b9\u03b3\u03bc\u03b9\u03b1\u03af\u03b1 \u03c3\u03c4\u03b1\u03bc\u03b1\u03c4\u03ac\u03b5\u03b9. \u0391\u03bd \u03b7 \u03b3\u03c9\u03bd\u03af\u03b1 \u03b8 \u03c4\u03bf\u03c5 \u03ba\u03b5\u03ba\u03bb\u03b9\u03bc\u03ad\u03bd\u03bf\u03c5 \u03b5\u03c0\u03b9\u03c0\u03ad\u03b4\u03bf\u03c5 \u03bc\u03b5\u03b9\u03ce\u03bd\u03b5\u03c4\u03b1\u03b9 \u03c4\u03b9 \u03b8\u03b1 \u03c3\u03c5\u03bc\u03b2\u03b5\u03af \u03bc\u03b5 \u03c4\u03bf \u03bc\u03ad\u03b3\u03b9\u03c3\u03c4\u03bf \u03bc\u03ae\u03ba\u03bf\u03c2 \u03c0\u03bf\u03c5 \u03b8\u03b1 \u03b4\u03b9\u03b1\u03bd\u03cd\u03b5\u03b9 \u03c4\u03bf \u03c3\u03ce\u03bc\u03b1;<br \/>\r\n<br \/>\r\n<div id=\"attachment_5790\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-5790\" class=\"size-medium wp-image-5790\" src=\"http:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-13-300x223.jpg\" alt=\"\" width=\"300\" height=\"223\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-13-300x223.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/08\/\u03a0\u03bf\u03bb\u03bb\u03b1\u03c0\u03bb\u03ae\u03c2-\u03b5\u03c0\u03b9\u03bb\u03bf\u03b3\u03ae\u03c2-13.jpg 498w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-5790\" class=\"wp-caption-text\">\u0395\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 20<\/p><\/div><br \/>\r\n<br \/>\r\n<span style=\"border-radius: 2px; text-indent: 20px; width: auto; padding: 0px 4px 0px 0px; text-align: center; font: bold 11px\/20px 'Helvetica Neue',Helvetica,sans-serif; color: #ffffff; background: #bd081c  no-repeat scroll 3px 50% \/ 14px 14px; position: absolute; opacity: 1; z-index: 8675309; display: none; cursor: pointer;\">\u039a\u03c1\u03ac\u03c4\u03b1 \u03c4\u03bf<\/span><\/div><input type='hidden' name='question_id[]' id='qID_20' value='358' \/><input type='hidden' id='answerType358' value='radio'><!-- end question-content--><\/div><div class='question-choices watupro-choices-columns '><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-358[]' id='answer-id-1086' class='answer   answerof-358 ' value='1086'   \/><label for='answer-id-1086' id='answer-label-1086' class=' answer'><span>\u0398\u03b1 \u03b1\u03c5\u03be\u03b7\u03b8\u03b5\u03af.<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-358[]' id='answer-id-1087' class='answer   answerof-358 ' value='1087'   \/><label for='answer-id-1087' id='answer-label-1087' class=' answer'><span>\u0398\u03b1 \u03bc\u03b5\u03b9\u03c9\u03b8\u03b5\u03af 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