{"id":6194,"date":"2017-12-24T14:43:44","date_gmt":"2017-12-24T12:43:44","guid":{"rendered":"http:\/\/viewonphysics.gr\/?p=6194"},"modified":"2017-12-24T14:43:44","modified_gmt":"2017-12-24T12:43:44","slug":"%ce%b5%ce%bd%ce%ad%cf%81%ce%b3%ce%b5%ce%b9%ce%b1-%ce%b4%ce%b9%ce%b1%cf%84%ce%ae%cf%81%ce%b7%cf%83%ce%b7-%cf%84%ce%b7%cf%82-%ce%bc-%ce%b5-online-%cf%83%cf%89%cf%83%cf%84%cf%8c-%ce%bb%ce%ac%ce%b8","status":"publish","type":"post","link":"https:\/\/viewonphysics.gr\/?p=6194","title":{"rendered":"\u0395\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1 &#038; \u0394\u03b9\u03b1\u03c4\u03ae\u03c1\u03b7\u03c3\u03b7 \u03c4\u03b7\u03c2 \u039c.\u0395. Online: \u03a3\u03c9\u03c3\u03c4\u03cc &#8211; \u039b\u03ac\u03b8\u03bf\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=\"submittingExam33\" 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-33\"><p>\u039f\u03b9 20 \u03b5\u03c1\u03c9\u03c4\u03ae\u03c3\u03b5\u03b9\u03c2 \u03a3\u03c9\u03c3\u03c4\u03bf\u03cd - \u039b\u03ac\u03b8\u03bf\u03c5\u03c2 (True-False) \u03c3\u03c4\u03b7\u03bd \u0395\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1 &amp; \u0394\u03b9\u03b1\u03c4\u03ae\u03c1\u03b7\u03c3\u03b7 \u03c4\u03b7\u03c2 \u039c.\u0395. \u03b2\u03b1\u03b8\u03bc\u03bf\u03bb\u03bf\u03b3\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc 1 \u03bc\u03bf\u03bd\u03ac\u03b4\u03b1 \u03b7 \u03ba\u03ac\u03b8\u03b5 \u03bc\u03af\u03b1.<\/p>\n<p>\u038c\u03c4\u03b1\u03bd \u03bf\u03bb\u03bf\u03ba\u03bb\u03b7\u03c1\u03ce\u03c3\u03b5\u03b9\u03c2 \u03c4\u03b9\u03c2 \u03b1\u03c0\u03b1\u03bd\u03c4\u03ae\u03c3\u03b5\u03b9\u03c2 \u03c0\u03ac\u03c4\u03b1 \u03c4\u03bf \"\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<p>\u03a3\u03b5 \u03cc\u03bb\u03b5\u03c2 \u03c4\u03b9\u03c2 \u03b5\u03c1\u03c9\u03c4\u03ae\u03c3\u03b5\u03b9\u03c2 \u03bd\u03b1 \u03bb\u03b1\u03bc\u03b2\u03ac\u03bd\u03b5\u03b9\u03c2 g=10m\/s<sup>2<\/sup>.<\/p>\n<\/div>\n\n<form action=\"\" method=\"post\" class=\"quiz-form\" id=\"quiz-33\"  enctype=\"multipart\/form-data\" >\n<div class='watu-question ' id='question-1' style=';'><div id='questionWrap-1'  class='   watupro-question-id-359'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>1. <\/span>\u039c\u03b9\u03b1 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03bf\u03c5 \u03b1\u03c3\u03ba\u03b5\u03af\u03c4\u03b1\u03b9 \u03c3\u03b5 \u03ad\u03bd\u03b1 \u03c3\u03ce\u03bc\u03b1 \u03c0\u03b1\u03c1\u03ac\u03b3\u03b5\u03b9 \u03ad\u03c1\u03b3\u03bf 50J. \u0395\u03c0\u03bf\u03bc\u03ad\u03bd\u03c9\u03c2 \u03b7 \u03b5\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1 \u03c4\u03bf\u03c5 \u03c3\u03ce\u03bc\u03b1\u03c4\u03bf\u03c2 \u03b1\u03c5\u03be\u03ae\u03b8\u03b7\u03ba\u03b5 \u03ba\u03b1\u03c4\u03ac 50J.<\/div><input type='hidden' name='question_id[]' id='qID_1' value='359' \/><input type='hidden' id='answerType359' 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-359[]' id='answer-id-1090' class='answer   answerof-359 ' value='1090'   \/><label for='answer-id-1090' id='answer-label-1090' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-359[]' id='answer-id-1091' class='answer   answerof-359 ' value='1091'   \/><label for='answer-id-1091' id='answer-label-1091' class=' answer'><span>False<\/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-360'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>2. <\/span>\u0388\u03bd\u03b1\u03c2 \u03b5\u03c1\u03b3\u03ac\u03c4\u03b7\u03c2 \u03c4\u03c1\u03b1\u03b2\u03ac\u03b5\u03b9 \u03bc\u03b5 \u03ad\u03bd\u03b1 \u03c3\u03c7\u03bf\u03b9\u03bd\u03af \u03ad\u03bd\u03b1 \u03b2\u03b1\u03c1\u03cd \u03ba\u03c5\u03b2\u03ce\u03c4\u03b9\u03bf, \u03b1\u03bb\u03bb\u03ac \u03b1\u03c5\u03c4\u03cc \u03c0\u03b1\u03c1\u03b1\u03bc\u03ad\u03bd\u03b5\u03b9 \u03b1\u03ba\u03af\u03bd\u03b7\u03c4\u03bf. \u0391\u03c5\u03c4\u03cc \u03c3\u03c5\u03bc\u03b2\u03b1\u03af\u03bd\u03b5\u03b9 \u03b3\u03b9\u03b1\u03c4\u03af \u03c4\u03bf \u03ad\u03c1\u03b3\u03bf \u03c4\u03b7\u03c2 \u03b4\u03c5\u03bd\u03b1\u03bc\u03b7\u03c2 \u03c0\u03bf\u03c5 \u03b1\u03c3\u03ba\u03b5\u03af \u03bf \u03b5\u03c1\u03b3\u03ac\u03c4\u03b7\u03c2 \u03bc\u03ad\u03c3\u03c9 \u03c4\u03bf\u03c5 \u03c3\u03c7\u03bf\u03b9\u03bd\u03b9\u03bf\u03cd \u03c3\u03c4\u03bf \u03ba\u03b9\u03b2\u03ce\u03c4\u03b9\u03bf \u03b5\u03be\u03bf\u03c5\u03b4\u03b5\u03c4\u03b5\u03c1\u03ce\u03bd\u03b5\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03bf \u03ad\u03c1\u03b3\u03bf \u03c4\u03b7\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2.<\/div><input type='hidden' name='question_id[]' id='qID_2' value='360' \/><input type='hidden' id='answerType360' 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-360[]' id='answer-id-1092' class='answer   answerof-360 ' value='1092'   \/><label for='answer-id-1092' id='answer-label-1092' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-360[]' id='answer-id-1093' class='answer   answerof-360 ' value='1093'   \/><label for='answer-id-1093' id='answer-label-1093' class=' answer'><span>False<\/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-361'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>3. <\/span>\u03a4\u03b1 \u03c3\u03ce\u03bc\u03b1\u03c4\u03b1 \u03ba\u03b9\u03bd\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03c3\u03b5 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf \u03b5\u03be \u03b1\u03b9\u03c4\u03af\u03b1\u03c2 \u03c4\u03c9\u03bd \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03c9\u03bd F \u03ba\u03b1\u03b9 F'. \u0391\u03bd \u03bf\u03b9 \u03b4\u03cd\u03bf \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2 \u03c0\u03b1\u03c1\u03ac\u03b3\u03bf\u03c5\u03bd \u03ad\u03c1\u03b3\u03bf 100J \u03bc\u03b5\u03c4\u03b1\u03c4\u03bf\u03c0\u03af\u03b6\u03bf\u03bd\u03c4\u03b1\u03c2 \u03c4\u03b1 \u03c3\u03ce\u03bc\u03b1\u03c4\u03b1 \u03ba\u03b1\u03c4\u03ac \u03c4\u03bf \u03af\u03b4\u03b9\u03bf \u03bc\u03ae\u03ba\u03bf\u03c2, \u03c4\u03cc\u03c4\u03b5 F'&gt;F.<br \/>\r\n<br \/>\r\n<div id=\"attachment_6200\" style=\"width: 375px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6200\" class=\" wp-image-6200\" src=\"http:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/12\/image-9-300x102.jpeg\" alt=\"\" width=\"365\" height=\"124\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/12\/image-9-300x102.jpeg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/12\/image-9-768x261.jpeg 768w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/12\/image-9-1024x348.jpeg 1024w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/12\/image-9.jpeg 1243w\" sizes=\"auto, (max-width: 365px) 100vw, 365px\" \/><p id=\"caption-attachment-6200\" class=\"wp-caption-text\">\u0395\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 3<\/p><\/div><\/div><input type='hidden' name='question_id[]' id='qID_3' value='361' \/><input type='hidden' id='answerType361' 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-361[]' id='answer-id-1094' class='answer   answerof-361 ' value='1094'   \/><label for='answer-id-1094' id='answer-label-1094' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-361[]' id='answer-id-1095' class='answer   answerof-361 ' value='1095'   \/><label for='answer-id-1095' id='answer-label-1095' class=' answer'><span>False<\/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-362'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>4. <\/span>\u03a3\u03b5 \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 F \u03ba\u03b1\u03b9 \u03ba\u03b9\u03bd\u03b5\u03af\u03c4\u03b1\u03b9 \u03c3\u03b5 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf \u03bc\u03b5 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ae \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1. \u03a4\u03bf \u03ad\u03c1\u03b3\u03bf \u03c4\u03b7\u03c2 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7\u03c2 F \u03b9\u03c3\u03bf\u03cd\u03c4\u03b1\u03b9 \u03bc\u03b5 \u03c4\u03bf \u03ad\u03c1\u03b3\u03bf \u03c0\u03bf\u03c5 \u03ba\u03b1\u03c4\u03b1\u03bd\u03b1\u03bb\u03ce\u03bd\u03b5\u03b9 \u03b7 \u03c4\u03c1\u03b9\u03b2\u03ae.<\/div><input type='hidden' name='question_id[]' id='qID_4' value='362' \/><input type='hidden' id='answerType362' 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-362[]' id='answer-id-1096' class='answer   answerof-362 ' value='1096'   \/><label for='answer-id-1096' id='answer-label-1096' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-362[]' id='answer-id-1097' class='answer   answerof-362 ' value='1097'   \/><label for='answer-id-1097' id='answer-label-1097' class=' answer'><span>False<\/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-363'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>5. <\/span>\u03a4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03bc\u03b5\u03c4\u03b1\u03c4\u03bf\u03c0\u03af\u03b6\u03b5\u03c4\u03b1\u03b9 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03b4\u03b5\u03be\u03b9\u03ac \u03ba\u03b1\u03c4\u03ac \u03b4\u03b9\u03ac\u03c3\u03c4\u03b7\u03bc\u03b1 \u0394x. \u03a4\u03bf \u03ad\u03c1\u03b3\u03bf \u03c4\u03b7\u03c2 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7\u03c2 \u039d \u03c4\u03bf\u03c5 \u03b4\u03b1\u03c0\u03ad\u03b4\u03bf\u03c5 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b5\u03b3\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03bf \u03b1\u03c0\u03cc \u03c4\u03bf \u03ad\u03c1\u03b3\u03bf \u03c4\u03bf\u03c5 \u03b2\u03ac\u03c1\u03bf\u03c5\u03c2.<br \/>\r\n<br \/>\r\n<div id=\"attachment_6201\" style=\"width: 292px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6201\" class=\" wp-image-6201\" src=\"http:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/12\/image-10-300x276.jpeg\" alt=\"\" width=\"282\" height=\"259\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/12\/image-10-300x276.jpeg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/12\/image-10-768x707.jpeg 768w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/12\/image-10.jpeg 830w\" sizes=\"auto, (max-width: 282px) 100vw, 282px\" \/><p id=\"caption-attachment-6201\" class=\"wp-caption-text\">\u0395\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 5<\/p><\/div><\/div><input type='hidden' name='question_id[]' id='qID_5' value='363' \/><input type='hidden' id='answerType363' 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-363[]' id='answer-id-1098' class='answer   answerof-363 ' value='1098'   \/><label for='answer-id-1098' id='answer-label-1098' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-363[]' id='answer-id-1099' class='answer   answerof-363 ' value='1099'   \/><label for='answer-id-1099' id='answer-label-1099' class=' answer'><span>False<\/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-366'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>6. <\/span>\u03a3\u03b5 \u03c3\u03ce\u03bc\u03b1, \u03c0\u03bf\u03c5 \u03b1\u03c1\u03c7\u03b9\u03ba\u03ac \u03ae\u03c4\u03b1\u03bd \u03b1\u03ba\u03af\u03bd\u03b7\u03c4\u03bf \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\u03bf\u03cd\u03bc\u03b5 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03b1 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 F \u03b7 \u03bf\u03c0\u03bf\u03af\u03b1 \u03c4\u03bf \u03b8\u03ad\u03c4\u03b5\u03b9 \u03c3\u03b5 \u03ba\u03af\u03bd\u03b7\u03c3\u03b7. \u0397 F, \u03b1\u03c6\u03bf\u03cd \u03c0\u03b1\u03c1\u03ac\u03b3\u03b5\u03b9 \u03ad\u03c1\u03b3\u03bf 300J, \u03c0\u03b1\u03cd\u03b5\u03b9 \u03bd\u03b1 \u03b1\u03c3\u03ba\u03b5\u03af\u03c4\u03b1\u03b9. \u03a4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03c3\u03c5\u03bd\u03b5\u03c7\u03af\u03b6\u03b5\u03b9 \u03bd\u03b1 \u03ba\u03b9\u03bd\u03b5\u03af\u03c4\u03b1\u03b9 \u03b3\u03b9\u03b1 \u03bf\u03c1\u03b9\u03c3\u03bc\u03ad\u03bd\u03bf \u03b4\u03b9\u03ac\u03c3\u03c4\u03b7\u03bc\u03b1 \u03ba\u03b1\u03b9 \u03c3\u03c4\u03b1\u03bc\u03b1\u03c4\u03ac\u03b5\u03b9. \u03a4\u03bf \u03ad\u03c1\u03b3\u03bf \u03c4\u03b7\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03af\u03c3\u03bf \u03bc\u03b5 300J.<\/div><input type='hidden' name='question_id[]' id='qID_6' value='366' \/><input type='hidden' id='answerType366' 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-366[]' id='answer-id-1104' class='answer   answerof-366 ' value='1104'   \/><label for='answer-id-1104' id='answer-label-1104' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-366[]' id='answer-id-1105' class='answer   answerof-366 ' value='1105'   \/><label for='answer-id-1105' id='answer-label-1105' class=' answer'><span>False<\/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-364'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>7. <\/span>\u0388\u03bd\u03b1 \u03c3\u03ce\u03bc\u03b1 \u03ba\u03b9\u03bd\u03b5\u03af\u03c4\u03b1\u03b9 \u03c3\u03c4\u03bf \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf \u03bc\u03b5 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ae \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 20m\/s, \u03bf\u03c0\u03cc\u03c4\u03b5 \u03b1\u03c3\u03ba\u03b5\u03af\u03c4\u03b5\u03b9 \u03b5\u03c0\u03ac\u03bd\u03c9 \u03c4\u03bf\u03c5 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 F. \u038c\u03c4\u03b1\u03bd \u03b7 \u03b4\u03cd\u03bd\u03b1\u03bc\u03b7 \u03c0\u03b1\u03c1\u03ac\u03b3\u03b5\u03b9 \u03ad\u03c1\u03b3\u03bf 300J, \u03c0\u03b1\u03cd\u03b5\u03b9 \u03bd\u03b1 \u03b1\u03c3\u03ba\u03b5\u03af\u03c4\u03b1\u03b9 \u03ba\u03b1\u03b9 \u03c4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03c3\u03c5\u03bd\u03b5\u03c7\u03af\u03b6\u03b5\u03b9 \u03bd\u03b1 \u03ba\u03b9\u03bd\u03b5\u03af\u03c4\u03b1\u03b9 \u03c3\u03c4\u03bf \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf \u03bc\u03ad\u03c7\u03c1\u03b9 \u03bd\u03b1 \u03c3\u03c4\u03b1\u03bc\u03b1\u03c4\u03ae\u03c3\u03b5\u03b9.\u03a4\u03cc\u03c4\u03b5 \u03c4\u03bf \u03ad\u03c1\u03b3\u03bf \u03c4\u03b7\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b5\u03b3\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03bf \u03b1\u03c0\u03cc 300J.<\/div><input type='hidden' name='question_id[]' id='qID_7' value='364' \/><input type='hidden' id='answerType364' 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-364[]' id='answer-id-1100' class='answer   answerof-364 ' value='1100'   \/><label for='answer-id-1100' id='answer-label-1100' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-364[]' id='answer-id-1101' class='answer   answerof-364 ' value='1101'   \/><label for='answer-id-1101' id='answer-label-1101' class=' answer'><span>False<\/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-365'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>8. <\/span>\u0391\u03bd \u03b1\u03c6\u03ae\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b7\u03bd \u03af\u03b4\u03b9\u03b1 \u03c3\u03c6\u03b1\u03af\u03c1\u03b1 \u03bd\u03b1 \u03c0\u03ad\u03c3\u03b5\u03b9, \u03c4\u03bf \u03ad\u03c1\u03b3\u03bf \u03c4\u03bf\u03c5 \u03b2\u03ac\u03c1\u03bf\u03c5\u03c2 \u03c4\u03b7\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 \u03bc\u03b5\u03b3\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03bf \u03c3\u03c4\u03b7\u03bd \u03c0\u03c1\u03ce\u03c4\u03b7 \u03c0\u03b5\u03c1\u03af\u03c0\u03c4\u03c9\u03c3\u03b7 (\u03c3\u03ba\u03ac\u03bb\u03b5\u03c2) \u03b3\u03b9\u03b1\u03c4\u03af \u03ba\u03ac\u03bd\u03b5\u03b9 \u03bc\u03b5\u03b3\u03b1\u03bb\u03cd\u03c4\u03b5\u03c1\u03b7 \u03b4\u03b9\u03b1\u03b4\u03c1\u03bf\u03bc\u03ae.<br \/>\r\n<br \/>\r\n<div id=\"attachment_6203\" style=\"width: 447px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6203\" class=\" wp-image-6203\" src=\"http:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/12\/\u0388\u03c1\u03b3\u03bf-\u0395\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1-1-300x93.jpg\" alt=\"\" width=\"437\" height=\"136\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/12\/\u0388\u03c1\u03b3\u03bf-\u0395\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1-1-300x93.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/12\/\u0388\u03c1\u03b3\u03bf-\u0395\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1-1-768x239.jpg 768w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/12\/\u0388\u03c1\u03b3\u03bf-\u0395\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1-1.jpg 848w\" sizes=\"auto, (max-width: 437px) 100vw, 437px\" \/><p id=\"caption-attachment-6203\" class=\"wp-caption-text\">\u0395\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 8<\/p><\/div><\/div><input type='hidden' name='question_id[]' id='qID_8' value='365' \/><input type='hidden' id='answerType365' 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-365[]' id='answer-id-1102' class='answer   answerof-365 ' value='1102'   \/><label for='answer-id-1102' id='answer-label-1102' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-365[]' id='answer-id-1103' class='answer   answerof-365 ' value='1103'   \/><label for='answer-id-1103' id='answer-label-1103' class=' answer'><span>False<\/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-367'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>9. <\/span>\u0391\u03bd \u03c3\u03b5 \u03ad\u03bd\u03b1 \u03c3\u03ce\u03bc\u03b1 \u03b1\u03c3\u03ba\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03c4\u03ad\u03c3\u03c3\u03b5\u03c1\u03b9\u03c2 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03b9\u03c2, \u03c0\u03bf\u03c5 \u03c4\u03b1 \u03ad\u03c1\u03b3\u03b1 \u03c4\u03bf\u03c5\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 500J, 800J, -300J \u03ba\u03b1\u03b9 -900J, \u03c4\u03cc\u03c4\u03b5 \u03c4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03b1\u03c5\u03be\u03ac\u03bd\u03b5\u03b9 \u03c4\u03b7\u03bd \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03ac \u03c4\u03bf\u03c5.<\/div><input type='hidden' name='question_id[]' id='qID_9' value='367' \/><input type='hidden' id='answerType367' 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-367[]' id='answer-id-1106' class='answer   answerof-367 ' value='1106'   \/><label for='answer-id-1106' id='answer-label-1106' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-367[]' id='answer-id-1107' class='answer   answerof-367 ' value='1107'   \/><label for='answer-id-1107' id='answer-label-1107' class=' answer'><span>False<\/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-368'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>10. <\/span>\u03a3\u03ce\u03bc\u03b1 \u03be\u03b5\u03ba\u03b9\u03bd\u03ac\u03b5\u03b9 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03b7\u03c1\u03b5\u03bc\u03af\u03b1 \u03c5\u03c0\u03cc \u03c4\u03b7\u03bd \u03b5\u03c0\u03af\u03b4\u03c1\u03b1\u03c3\u03b7 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03c9\u03bd \u03ba\u03b1\u03b9 \u03b1\u03c0\u03bf\u03ba\u03c4\u03ac \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03c5, \u03cc\u03c4\u03b1\u03bd \u03c4\u03bf \u03c3\u03c5\u03bd\u03bf\u03bb\u03b9\u03ba\u03cc \u03ad\u03c1\u03b3\u03bf \u03c4\u03c9\u03bd \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03c9\u03bd \u03b5\u03af\u03bd\u03b1\u03b9 W<sub>\u03bf\u03bb<sub>.<\/sub><\/sub>. \u0391\u03bd \u03b4\u03b9\u03c0\u03bb\u03b1\u03c3\u03b9\u03b1\u03c3\u03c4\u03b5\u03af \u03c4\u03bf W<sub>\u03bf\u03bb.<\/sub>, \u03c4\u03cc\u03c4\u03b5 \u03b4\u03b9\u03c0\u03bb\u03b1\u03c3\u03b9\u03ac\u03b6\u03b5\u03c4\u03b1\u03b9 \u03ba\u03b1\u03b9 \u03b7 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03c5.<\/div><input type='hidden' name='question_id[]' id='qID_10' value='368' \/><input type='hidden' id='answerType368' 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-368[]' id='answer-id-1108' class='answer   answerof-368 ' value='1108'   \/><label for='answer-id-1108' id='answer-label-1108' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-368[]' id='answer-id-1109' class='answer   answerof-368 ' value='1109'   \/><label for='answer-id-1109' id='answer-label-1109' class=' answer'><span>False<\/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-369'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>11. <\/span>\u0391\u03b8\u03bb\u03b7\u03c4\u03ae\u03c2 \u03c4\u03c9\u03bd \u03ba\u03b1\u03c4\u03b1\u03b4\u03cd\u03c3\u03b5\u03c9\u03bd \u03b2\u03bf\u03c5\u03c4\u03ac\u03b5\u03b9 \u03b1\u03c0\u03cc \u03cd\u03c8\u03bf\u03c2 H \u03c0\u03ac\u03bd\u03c9 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03b5\u03c0\u03b9\u03c6\u03ac\u03bd\u03b5\u03b9\u03b1 \u03c4\u03bf\u03c5 \u03bd\u03b5\u03c1\u03bf\u03cd \u03ba\u03b1\u03b9 \u03b2\u03c5\u03b8\u03af\u03b6\u03b5\u03c4\u03b1\u03b9 \u03ba\u03b1\u03c4\u03ac h \u03bc\u03ad\u03c3\u03b1 \u03c3\u03c4\u03bf \u03bd\u03b5\u03c1\u03cc. \u0391\u03bd \u03ba\u03b1\u03bd\u03b5\u03b9 \u03c4\u03b7 \u03b2\u03bf\u03c5\u03c4\u03b9\u03ac \u03c4\u03bf\u03c5 \u03b1\u03c0\u03cc \u03b4\u03b9\u03c0\u03bb\u03ac\u03c3\u03b9\u03bf \u03cd\u03c8\u03bf\u03c2 (2H), \u03c4\u03cc\u03c4\u03b5 \u03b8\u03b1 \u03b2\u03c5\u03b8\u03b9\u03c3\u03c4\u03b5\u03af \u03ba\u03b1\u03b9 \u03c3\u03b5 \u03b4\u03b9\u03c0\u03bb\u03ac\u03c3\u03b9\u03bf \u03b2\u03ac\u03b8\u03bf\u03c2 (2h). \u0398\u03b5\u03ce\u03c1\u03b7\u03c3\u03b5 \u03cc\u03c4\u03b9 \u03b7 \u03b1\u03bd\u03c4\u03af\u03c3\u03c4\u03b1\u03c3\u03b7 F<sub>\u03b1\u03bd\u03c4<\/sub> \u03c4\u03bf\u03c5 \u03bd\u03b5\u03c1\u03bf\u03cd \u03b5\u03af\u03bd\u03b1\u03b9 \u03c3\u03c4\u03b1\u03b8\u03b5\u03c1\u03ae \u03ba\u03b1\u03b9 \u03c3\u03c4\u03b9\u03c2 \u03b4\u03cd\u03bf \u03c0\u03b5\u03c1\u03b9\u03c0\u03c4\u03ce\u03c3\u03b5\u03b9\u03c2.<\/div><input type='hidden' name='question_id[]' id='qID_11' value='369' \/><input type='hidden' id='answerType369' 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-369[]' id='answer-id-1110' class='answer   answerof-369 ' value='1110'   \/><label for='answer-id-1110' id='answer-label-1110' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-369[]' id='answer-id-1111' class='answer   answerof-369 ' value='1111'   \/><label for='answer-id-1111' id='answer-label-1111' class=' answer'><span>False<\/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-370'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>12. <\/span>\u0391\u03c0\u03cc \u03c4\u03b7\u03bd \u03ba\u03bf\u03c1\u03c5\u03c6\u03ae \u03ba\u03b5\u03ba\u03bb\u03b9\u03bc\u03ad\u03bd\u03bf\u03c5 \u03b5\u03c0\u03b9\u03c0\u03ad\u03b4\u03bf\u03c5 \u03cd\u03c8\u03bf\u03c5\u03c2 h=3m \u03ba\u03b1\u03b9 \u03b3\u03c9\u03bd\u03af\u03b1\u03c2 30<sup>0<\/sup>, \u03b1\u03c6\u03ae\u03bd\u03bf\u03c5\u03bc\u03b5 \u03bd\u03b1 \u03bf\u03bb\u03b9\u03c3\u03b8\u03ae\u03c3\u03b5\u03b9 \u03c3\u03ce\u03bc\u03b1 \u03bc\u03ac\u03b6\u03b1\u03c2 5kg. \u0391\u03bd \u03b7 \u03c4\u03c1\u03b9\u03b2\u03ae \u03bc\u03b5\u03c4\u03b1\u03be\u03cd \u03c4\u03bf\u03c5 \u03c3\u03ce\u03bc\u03b1\u03c4\u03bf\u03c2 \u03ba\u03b1\u03b9 \u03c4\u03bf\u03c5 \u03b5\u03c0\u03b9\u03c0\u03ad\u03b4\u03bf\u03c5 \u03b5\u03af\u03bd\u03b1\u03b9 26\u039d, \u03c4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03b4\u03b5 \u03b8\u03b1 \u03c6\u03c4\u03ac\u03c3\u03b5\u03b9 \u03c3\u03c4\u03b7 \u03b2\u03ac\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03ba\u03b5\u03ba\u03bb\u03b9\u03bc\u03ad\u03bd\u03bf\u03c5.<\/div><input type='hidden' name='question_id[]' id='qID_12' value='370' \/><input type='hidden' id='answerType370' 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-370[]' id='answer-id-1112' class='answer   answerof-370 ' value='1112'   \/><label for='answer-id-1112' id='answer-label-1112' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-370[]' id='answer-id-1113' class='answer   answerof-370 ' value='1113'   \/><label for='answer-id-1113' id='answer-label-1113' class=' answer'><span>False<\/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-371'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>13. <\/span>\u0391\u03c5\u03c4\u03bf\u03ba\u03af\u03bd\u03b7\u03c4\u03bf \u03c4\u03c1\u03ad\u03c7\u03b5\u03b9 \u03c3\u03b5 \u03b5\u03c5\u03b8\u03cd\u03b3\u03c1\u03b1\u03bc\u03bc\u03bf \u03ba\u03b1\u03b9 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf \u03b4\u03c1\u03cc\u03bc\u03bf \u03bc\u03b5 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03c5, \u03bf\u03c0\u03cc\u03c4\u03b5 \u03bf \u03bf\u03b4\u03b7\u03b3\u03cc\u03c2 \u03b1\u03c1\u03c7\u03af\u03b6\u03b5\u03b9 \u03bd\u03b1 \u03c6\u03c1\u03b5\u03bd\u03ac\u03c1\u03b5\u03b9. \u039b\u03cc\u03b3\u03c9 \u03c4\u03c1\u03b9\u03b2\u03ae\u03c2 \u03c4\u03bf \u03b1\u03c5\u03c4\u03bf\u03ba\u03af\u03bd\u03b7\u03c4\u03bf \u03c3\u03c4\u03b1\u03bc\u03b1\u03c4\u03ac\u03b5\u03b9 \u03b1\u03c6\u03bf\u03cd \u03b4\u03b9\u03b1\u03bd\u03cd\u03c3\u03b5\u03b9 \u03bc\u03ae\u03ba\u03bf\u03c2 \u0394x \u03b1\u03c0\u03cc \u03c4\u03bf \u03c3\u03b7\u03bc\u03b5\u03af\u03bf \u03c0\u03bf\u03c5 \u03c0\u03ac\u03c4\u03b7\u03c3\u03b5 \u03bf \u03bf\u03b4\u03b7\u03b3\u03cc\u03c2 \u03c4\u03bf \u03c6\u03c1\u03ad\u03bd\u03bf. \u0391\u03bd \u03c4\u03bf \u03b1\u03c5\u03c4\u03bf\u03ba\u03af\u03bd\u03b7\u03c4\u03bf \u03ad\u03c4\u03c1\u03b5\u03c7\u03b5 \u03bc\u03b5 \u03b4\u03b9\u03c0\u03bb\u03ac\u03c3\u03b9\u03b1 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03c4\u03b7 \u03c3\u03c4\u03b9\u03b3\u03bc\u03ae \u03c4\u03bf\u03c5 \u03c6\u03c1\u03b5\u03bd\u03b1\u03c1\u03af\u03c3\u03bc\u03b1\u03c4\u03bf\u03c2, \u03c4\u03cc\u03c4\u03b5 \u03c4\u03bf \u03b4\u03b9\u03ac\u03c3\u03c4\u03b7\u03bc\u03b1 \u03c0\u03bf\u03c5 \u03b8\u03b1 \u03b4\u03b9\u03ac\u03bd\u03c5\u03b5 \u03bc\u03ad\u03c7\u03c1\u03b9 \u03bd\u03b1 \u03c3\u03c4\u03b1\u03bc\u03b1\u03c4\u03ae\u03c3\u03b5\u03b9, \u03b8\u03b1 \u03ae\u03c4\u03b1\u03bd \u03b5\u03c0\u03af\u03c3\u03b7\u03c2 \u03b4\u03b9\u03c0\u03bb\u03ac\u03c3\u03b9\u03bf, \u03b4\u03b7\u03bb.2\u0394x.<\/div><input type='hidden' name='question_id[]' id='qID_13' value='371' \/><input type='hidden' id='answerType371' 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-371[]' id='answer-id-1114' class='answer   answerof-371 ' value='1114'   \/><label for='answer-id-1114' id='answer-label-1114' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-371[]' id='answer-id-1115' class='answer   answerof-371 ' value='1115'   \/><label for='answer-id-1115' id='answer-label-1115' class=' answer'><span>False<\/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-377'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>14. <\/span>\u03a3\u03ce\u03bc\u03b1 \u03ba\u03b9\u03bd\u03b5\u03af\u03c4\u03b1\u03b9 \u03c3\u03b5 \u03bf\u03c1\u03b9\u03b6\u03cc\u03bd\u03c4\u03b9\u03bf \u03b5\u03c0\u03af\u03c0\u03b5\u03b4\u03bf \u03c5\u03c0\u03cc \u03c4\u03b7\u03bd \u03b5\u03c0\u03af\u03b4\u03c1\u03b1\u03c3\u03b7 \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03c9\u03bd, \u03bf\u03b9 \u03bf\u03c0\u03bf\u03af\u03b5\u03c2 \u03bc\u03b5\u03c4\u03b1\u03b2\u03ac\u03bb\u03bb\u03bf\u03c5\u03bd \u03c4\u03b7\u03bd \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03ac \u03c4\u03bf\u03c5 \u03cc\u03c0\u03c9\u03c2 \u03c6\u03b1\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03c3\u03c4\u03bf \u03b4\u03b9\u03ac\u03b3\u03c1\u03b1\u03bc\u03bc\u03b1. \u03a4\u03bf \u03c3\u03c5\u03bd\u03bf\u03bb\u03b9\u03ba\u03cc \u03ad\u03c1\u03b3\u03bf \u03c4\u03c9\u03bd \u03b4\u03c5\u03bd\u03ac\u03bc\u03b5\u03c9\u03bd \u03c0\u03bf\u03c5 \u03b1\u03c3\u03ba\u03bf\u03cd\u03bd\u03c4\u03b1\u03b9 \u03c3\u03c4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03b1\u03c0\u03cc \u03c4\u03b7 \u03c7\u03c1\u03bf\u03bd\u03b9\u03ba\u03ae \u03c3\u03c4\u03b9\u03b3\u03bc\u03ae 0s \u03ad\u03c9\u03c2 \u03c4\u03b1 20s \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03c1\u03bd\u03b7\u03c4\u03b9\u03ba\u03cc.<br \/>\r\n<br \/>\r\n<div id=\"attachment_6208\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6208\" class=\"size-medium wp-image-6208\" src=\"http:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/12\/\u0388\u03c1\u03b3\u03bf-\u0395\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1-3-300x281.jpg\" alt=\"\" width=\"300\" height=\"281\" srcset=\"https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/12\/\u0388\u03c1\u03b3\u03bf-\u0395\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1-3-300x281.jpg 300w, https:\/\/viewonphysics.gr\/wp-content\/uploads\/2017\/12\/\u0388\u03c1\u03b3\u03bf-\u0395\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1-3.jpg 662w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><p id=\"caption-attachment-6208\" class=\"wp-caption-text\">\u0395\u03c1\u03ce\u03c4\u03b7\u03c3\u03b7 14<\/p><\/div><\/div><input type='hidden' name='question_id[]' id='qID_14' value='377' \/><input type='hidden' id='answerType377' 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-377[]' id='answer-id-1126' class='answer   answerof-377 ' value='1126'   \/><label for='answer-id-1126' id='answer-label-1126' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-377[]' id='answer-id-1127' class='answer   answerof-377 ' value='1127'   \/><label for='answer-id-1127' id='answer-label-1127' class=' answer'><span>False<\/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-372'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>15. <\/span>\u039c\u03b9\u03b1 \u03bc\u03c0\u03ac\u03bb\u03b1 \u03c4\u03bf\u03c5 \u03c4\u03ad\u03bd\u03bd\u03b9\u03c2 \u03bc\u03ac\u03b6\u03b1\u03c2 120g \u03c0\u03ad\u03c6\u03c4\u03b5\u03b9 \u03b1\u03c0\u03cc \u03cd\u03c8\u03bf\u03c2 5m, \u03bc\u03b5 \u03b1\u03bc\u03b5\u03bb\u03b7\u03c4\u03ad\u03b5\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ad\u03c2 \u03ba\u03b1\u03b9 \u03b1\u03bd\u03c4\u03b9\u03c3\u03c4\u03ac\u03c3\u03b5\u03b9\u03c2. \u0397 \u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03ae \u03c4\u03bf\u03c5 \u03b5\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1 2m \u03c0\u03c1\u03b9\u03bd \u03c6\u03c4\u03ac\u03c3\u03b5\u03b9 \u03c3\u03c4\u03bf \u03ad\u03b4\u03b1\u03c6\u03bf\u03c2 \u03b8\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 6J.<\/div><input type='hidden' name='question_id[]' id='qID_15' value='372' \/><input type='hidden' id='answerType372' 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-372[]' id='answer-id-1116' class='answer   answerof-372 ' value='1116'   \/><label for='answer-id-1116' id='answer-label-1116' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-372[]' id='answer-id-1117' class='answer   answerof-372 ' value='1117'   \/><label for='answer-id-1117' id='answer-label-1117' class=' answer'><span>False<\/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-373'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>16. <\/span>\u03a3\u03ce\u03bc\u03b1 \u03bc\u03ac\u03b6\u03b1\u03c2 4kg \u03b1\u03c6\u03ae\u03bd\u03b5\u03c4\u03b1\u03b9 \u03bd\u03b1 \u03c0\u03ad\u03c3\u03b5\u03b9 \u03b1\u03c0\u03cc \u03cd\u03c8\u03bf\u03c2 10m. \u0391\u03bd \u03b8\u03b5\u03c9\u03c1\u03ae\u03c3\u03bf\u03c5\u03bc\u03b5 \u03c4\u03b9\u03c2 \u03c4\u03c1\u03b9\u03b2\u03ad\u03c2 \u03ba\u03b1\u03b9 \u03b1\u03bd\u03c4\u03b9\u03c3\u03c4\u03ac\u03c3\u03b5\u03b9\u03c2 \u03b1\u03bc\u03b5\u03bb\u03b7\u03c4\u03ad\u03b5\u03c2, 2m \u03c0\u03c1\u03b9\u03bd \u03c6\u03c4\u03ac\u03c3\u03b5\u03b9 \u03c3\u03c4\u03bf \u03ad\u03b4\u03b1\u03c6\u03bf\u03c2 \u03b7 \u03ba\u03b9\u03bd\u03b7\u03c4\u03b9\u03ba\u03ae \u03b5\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1 \u03b8\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 400J.<\/div><input type='hidden' name='question_id[]' id='qID_16' value='373' \/><input type='hidden' id='answerType373' 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-373[]' id='answer-id-1118' class='answer   answerof-373 ' value='1118'   \/><label for='answer-id-1118' id='answer-label-1118' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-373[]' id='answer-id-1119' class='answer   answerof-373 ' value='1119'   \/><label for='answer-id-1119' id='answer-label-1119' class=' answer'><span>False<\/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-374'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>17. <\/span>\u03a3\u03ce\u03bc\u03b1 \u03b5\u03ba\u03c4\u03bf\u03be\u03b5\u03cd\u03b5\u03c4\u03b1\u03b9 \u03ba\u03b1\u03c4\u03b1\u03ba\u03cc\u03c1\u03c5\u03c6\u03b1 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03c0\u03ac\u03bd\u03c9. \u038c\u03c4\u03b1\u03bd \u03c4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03b4\u03b9\u03b1\u03bd\u03cd\u03c3\u03b5\u03b9 \u03c4\u03bf 70% \u03c4\u03bf\u03c5 \u03bc\u03ad\u03b3\u03b9\u03c3\u03c4\u03bf\u03c5 \u03cd\u03c8\u03bf\u03c5\u03c2 \u03b7 \u03ba\u03b9\u03bd\u03b7\u03c4\u03b9\u03ba\u03ae \u03c4\u03bf\u03c5 \u03b5\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1 \u03b8\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 \u03c4\u03bf 30% \u03c4\u03b7\u03c2 \u03b1\u03c1\u03c7\u03b9\u03ba\u03ae\u03c2. \u03a4\u03c1\u03b9\u03b2\u03ad\u03c2 \u03ba\u03b1\u03b9 \u03b1\u03bd\u03c4\u03b9\u03c3\u03c4\u03ac\u03c3\u03b5\u03b9\u03c2 \u03b1\u03bc\u03b5\u03bb\u03b7\u03c4\u03ad\u03b5\u03c2.<\/div><input type='hidden' name='question_id[]' id='qID_17' value='374' \/><input type='hidden' id='answerType374' 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-374[]' id='answer-id-1120' class='answer   answerof-374 ' value='1120'   \/><label for='answer-id-1120' id='answer-label-1120' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-374[]' id='answer-id-1121' class='answer   answerof-374 ' value='1121'   \/><label for='answer-id-1121' id='answer-label-1121' class=' answer'><span>False<\/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-375'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>18. <\/span>\u0388\u03bd\u03b1\u03c2 \u03c3\u03ba\u03b9\u03ad\u03c1 \u03ba\u03b1\u03c4\u03b5\u03b2\u03b1\u03af\u03bd\u03b5\u03b9 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03ba\u03bf\u03c1\u03c5\u03c6\u03ae \u03b5\u03bd\u03cc\u03c2 \u03bb\u03cc\u03c6\u03bf\u03c5 \u03cd\u03c8\u03bf\u03c5\u03c2 20m \u03ba\u03b1\u03b9 \u03c6\u03c4\u03ac\u03bd\u03b5\u03b9 \u03c3\u03c4\u03b7 \u03b2\u03ac\u03c3\u03b7 \u03c4\u03bf\u03c5 \u03bc\u03b5 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 22m\/s. \u0391\u03bd \u03c5\u03c0\u03bf\u03b8\u03ad\u03c3\u03bf\u03c5\u03bc\u03b5 \u03cc\u03c4\u03b9 \u03bf\u03b9 \u03c4\u03c1\u03b9\u03b2\u03ad\u03c2 \u03bc\u03b5 \u03c4\u03bf \u03c0\u03b1\u03b3\u03c9\u03bc\u03ad\u03bd\u03bf \u03c7\u03b9\u03cc\u03bd\u03b9 \u03b5\u03af\u03bd\u03b1\u03b9 \u03b1\u03bc\u03b5\u03bb\u03b7\u03c4\u03ad\u03b5\u03c2, \u03c4\u03cc\u03c4\u03b5 \u03bf \u03ac\u03bd\u03b5\u03bc\u03bf\u03c2 \u03c0\u03b1\u03c1\u03ae\u03b3\u03b1\u03b3\u03b5 \u03ad\u03c1\u03b3\u03bf \u03c0\u03ac\u03bd\u03c9 \u03c3\u03c4\u03bf \u03c3\u03ba\u03b9\u03ad\u03c1.<\/div><input type='hidden' name='question_id[]' id='qID_18' value='375' \/><input type='hidden' id='answerType375' 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-375[]' id='answer-id-1122' class='answer   answerof-375 ' value='1122'   \/><label for='answer-id-1122' id='answer-label-1122' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-375[]' id='answer-id-1123' class='answer   answerof-375 ' value='1123'   \/><label for='answer-id-1123' id='answer-label-1123' class=' answer'><span>False<\/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-376'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>19. <\/span>\u039c\u03af\u03b1 \u03bc\u03b9\u03ba\u03c1\u03ae \u03ba\u03b1\u03b9 \u03c3\u03c5\u03bc\u03c0\u03b1\u03b3\u03ae \u03bc\u03c0\u03ac\u03bb\u03b1 \u03c4\u03b7\u03bd \u03c0\u03b5\u03c4\u03ac\u03bc\u03b5 \u03c0\u03c1\u03bf\u03c2 \u03c4\u03b1 \u03c0\u03ac\u03bd\u03c9. \u0397 \u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03ae \u03c4\u03b7\u03c2 \u03b5\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1 \u03b4\u03af\u03bd\u03b5\u03c4\u03b1\u03b9 \u03b1\u03c0\u03cc \u03c4\u03b7\u03bd \u03b5\u03be\u03af\u03c3\u03c9\u03c3\u03b7 <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/viewonphysics.gr\/wp-content\/ql-cache\/quicklatex.com-b304f7334700ea4f48c2055f1979a277_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#105;&#115;&#112;&#108;&#97;&#121;&#115;&#116;&#121;&#108;&#101;&#32;&#118;&#94;&#50;&#43;&#50;&#48;&#104;&#61;&#54;&#50;&#53;&#74;\" title=\"Rendered by QuickLaTeX.com\" height=\"16\" width=\"113\" style=\"vertical-align: -2px;\"\/>. \u03a4\u03bf \u03bc\u03ad\u03b3\u03b9\u03c3\u03c4\u03bf \u03cd\u03c8\u03bf\u03c2 \u03c0\u03bf\u03c5 \u03c6\u03c4\u03ac\u03bd\u03b5\u03b9 \u03b7 \u03bc\u03c0\u03ac\u03bb\u03b1 \u03b5\u03af\u03bd\u03b1\u03b9 31,25m \u03ba\u03b1\u03b9 \u03b7 \u03c4\u03b1\u03c7\u03cd\u03c4\u03b7\u03c4\u03b1 \u03c0\u03bf\u03c5 \u03b5\u03c0\u03b9\u03c3\u03c4\u03c1\u03ad\u03c6\u03b5\u03b9 \u03c3\u03c4\u03bf \u03c3\u03b7\u03bc\u03b5\u03af\u03bf \u03b5\u03ba\u03ba\u03af\u03bd\u03b7\u03c3\u03b7\u03c2 \u03b5\u03af\u03bd\u03b1\u03b9 25m\/s.<\/div><input type='hidden' name='question_id[]' id='qID_19' value='376' \/><input type='hidden' id='answerType376' 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-376[]' id='answer-id-1124' class='answer   answerof-376 ' value='1124'   \/><label for='answer-id-1124' id='answer-label-1124' class=' answer'><span>True<\/span><\/label><\/div><div class='watupro-question-choice  ' dir='auto' ><input type='radio' name='answer-376[]' id='answer-id-1125' class='answer   answerof-376 ' value='1125'   \/><label for='answer-id-1125' id='answer-label-1125' class=' answer'><span>False<\/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-378'>\n\t\t\t<div class='question-content'><div><span class='watupro_num'>20. <\/span>\u0391\u03c6\u03ae\u03bd\u03bf\u03c5\u03bc\u03b5 \u03ad\u03bd\u03b1 \u03c3\u03ce\u03bc\u03b1 \u03b5\u03bb\u03b5\u03cd\u03b8\u03b5\u03c1\u03bf \u03bd\u03b1 \u03c0\u03ad\u03c3\u03b5\u03b9 \u03b1\u03c0\u03cc \u03bf\u03c1\u03b9\u03c3\u03bc\u03ad\u03bd\u03bf \u03cd\u03c8\u03bf\u03c2. \u03a4\u03bf \u03b4\u03b9\u03ac\u03b3\u03c1\u03b1\u03bc\u03bc\u03b1 \u03b4\u03b5\u03af\u03c7\u03bd\u03b5\u03b9 \u03c4\u03b7 \u03bc\u03b5\u03c4\u03b1\u03b2\u03bf\u03bb\u03ae \u03c4\u03b7\u03c2 \u03b4\u03c5\u03bd\u03b1\u03bc\u03b9\u03ba\u03ae\u03c2 U \u03ba\u03b1\u03b9 \u03c4\u03b7\u03c2 \u03ba\u03b9\u03bd\u03b7\u03c4\u03b9\u03ba\u03ae\u03c2 \u03b5\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1\u03c2 \u039a \u03c4\u03bf\u03c5 \u03c3\u03ce\u03bc\u03b1\u03c4\u03bf\u03c2 \u03c3\u03b5 \u03c3\u03c5\u03bd\u03ac\u03c1\u03c4\u03b7\u03c3\u03b7 \u03bc\u03b5 \u03c4\u03bf \u03cd\u03c8\u03bf\u03c2. \u03a3\u03c4\u03bf \u03c3\u03ce\u03bc\u03b1 \u03b4\u03b5\u03bd \u03b9\u03ba\u03b1\u03bd\u03bf\u03c0\u03bf\u03b9\u03b5\u03af\u03c4\u03b1\u03b9 \u03b7 \u03b1\u03c1\u03c7\u03ae \u03c4\u03b7\u03c2 \u03b4\u03b9\u03b1\u03c4\u03ae\u03c1\u03b7\u03c3\u03b7\u03c2 \u03c4\u03b7\u03c2 \u03bc\u03b7\u03c7\u03b1\u03bd\u03b9\u03ba\u03ae\u03c2 \u03b5\u03bd\u03ad\u03c1\u03b3\u03b5\u03b9\u03b1\u03c2.<br \/>\r\n<br \/>\r\n<div id=\"attachment_6214\" style=\"width: 329px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-6214\" class=\" wp-image-6214\" 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