{"id":471,"date":"2026-01-01T02:10:23","date_gmt":"2025-12-31T17:10:23","guid":{"rendered":"https:\/\/japper-tapchka.blog\/Diary\/?p=471"},"modified":"2026-09-20T00:51:54","modified_gmt":"2026-09-19T15:51:54","slug":"tokyo-tech-2025-physics-2","status":"publish","type":"post","link":"https:\/\/japper-tapchka.blog\/Diary\/tokyo-tech-2025-physics-2\/","title":{"rendered":"\u30102025\u6771\u5de5\u5927\u7269\u7406 \u7b2c2\u554f\u3011\u96fb\u78c1\u6c17\u5b66\u3092\u9ad8\u6821\u7269\u7406\u3067\u5fb9\u5e95\u89e3\u8aac\uff5c\u56f3\u89e3\u30fb\u30a4\u30e1\u30fc\u30b8\u4ed8\u304d"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u4eca\u56de\u306f\u6771\u4eac\u79d1\u5b66\u5927\u5b66(\u65e7\u6771\u5de5\u5927)2025\u5e74\u5ea6\u5165\u8a66\u306e\u7269\u7406\u7b2c2\u554f\u306b\u3064\u3044\u3066\u3001\u7d30\u304b\u304f\u89e3\u8aac\u3057\u3066\u3044\u304d\u307e\u3059\uff01\u554f\u984c\u306f\u89e3\u8aac\u306e\u90fd\u5408\u4e0a\u3001\u90e8\u5206\u7684\u306b\u63b2\u8f09\u3057\u3066\u304a\u308a\u307e\u3059\u304c\u3001\u30d5\u30ebPDF\u304c\u6b32\u3057\u3044\u5834\u5408\u306f<a href=\"https:\/\/admissions.isct.ac.jp\/ja\/013\/undergraduate\/examination-questions\">\u5927\u5b66\u306e\u30db\u30fc\u30e0\u30da\u30fc\u30b8<\/a>\u3084\u4e88\u5099\u6821\u306e\u30b5\u30a4\u30c8\u304b\u3089\u5165\u624b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/mark><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u524d\u63d0<\/h1>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"836\" height=\"1024\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/fac51a51c3a9c976da560f0c323913fb-836x1024.jpg\" alt=\"\" class=\"wp-image-541\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/fac51a51c3a9c976da560f0c323913fb-836x1024.jpg 836w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/fac51a51c3a9c976da560f0c323913fb-245x300.jpg 245w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/fac51a51c3a9c976da560f0c323913fb-768x940.jpg 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/fac51a51c3a9c976da560f0c323913fb.jpg 972w\" sizes=\"auto, (max-width: 836px) 100vw, 836px\" \/><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\">[A] \u5c0e\u4f53\u5186\u677f\u304c\u52d5\u304b\u306a\u3044\u5834\u5408<\/h1>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"972\" height=\"420\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/47a37f1c98e1cb5816b7fc0dcce9c367.png\" alt=\"\" class=\"wp-image-542\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/47a37f1c98e1cb5816b7fc0dcce9c367.png 972w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/47a37f1c98e1cb5816b7fc0dcce9c367-300x130.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/47a37f1c98e1cb5816b7fc0dcce9c367-768x332.png 768w\" sizes=\"auto, (max-width: 972px) 100vw, 972px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">(a) \u5c0e\u4f53\u5186\u677f\u306e\u4e0a\u9762\u306b\u751f\u3058\u308b\u96fb\u8377<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u5c0e\u4f53\u5186\u677f\u304c\u4e0b\u306e\u6975\u677f\u3068\u63a5\u89e6\u3057\u3066\u3044\u308b\u6642\u306f\u5c0e\u4f53\u5186\u677f\u304c\u7121\u3044\u306e\u3068\u540c\u3058\u304f\u3001\u5186\u5f62\u6975\u677f\u306b\u3088\u308b\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u3068\u898b\u3066\u8003\u3048\u308b\u3002<\/mark><\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/10\/ScienceTokyo2025-2a.png\" alt=\"\" class=\"wp-image-585 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/10\/ScienceTokyo2025-2a.png 600w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/10\/ScienceTokyo2025-2a-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/10\/ScienceTokyo2025-2a-150x150.png 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3053\u306e\u3068\u304d\u306e\u96fb\u6c17\u5bb9\u91cf\ud835\udc36\u2080\u3068\u3059\u308b\u3068\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{C_0 = \\epsilon _0 \\frac{S}{d} } $$\n<script id=\"wp-hooks-js\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-includes\/js\/dist\/hooks.min.js?ver=f0f188028580e8dc1255\"><\/script>\n<script id=\"wp-i18n-js\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-includes\/js\/dist\/i18n.min.js?ver=1dfe7db3940c23ea9216\"><\/script>\n<script id=\"wp-i18n-js-after\">\nwp.i18n.setLocaleData( { 'text direction\\u0004ltr': [ 'ltr' ] } );\n\/\/# sourceURL=wp-i18n-js-after\n<\/script>\n<script  async id=\"mathjax-js\" src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/mathjax\/2.7.7\/MathJax.js?config=TeX-MML-AM_CHTML\"><\/script>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3088\u3063\u3066\u3001\u6c42\u3081\u308b\u5c0e\u4f53\u5186\u677f\u306e\u4e0a\u9762\u306b\u751f\u3058\u308b\u96fb\u8377-\ud835\udc44\u2080\u306f\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{-Q_0 = &#8211; C_0 V = &#8211; \\frac{ \\epsilon _0 SV}{d} } $$<\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">(b) \u5e73\u884c\u677f\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306e\u9759\u96fb\u30a8\u30cd\u30eb\u30ae\u30fc<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306b\u304b\u304b\u308b\u96fb\u5727\u306f\u76f4\u6d41\u96fb\u6e90\u3068\u7b49\u3057\u3044\u305f\u3081\u3001\u9759\u96fb\u30a8\u30cd\u30eb\u30ae\u30fc\ud835\udc48\u2080\u306f<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{U_0 = \\frac{1}{2} C_0 V^2 = \\frac{ \\epsilon _0 SV^2}{2d} } $$<\/div>\n\n\n\n<h1 class=\"wp-block-heading\">[B] \u5c0e\u4f53\u5186\u677f\u304c\u52d5\u304f\u5834\u5408<\/h1>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"972\" height=\"839\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/cbedbac33557ce6f0326e0fc38b8d133.jpg\" alt=\"\" class=\"wp-image-543\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/cbedbac33557ce6f0326e0fc38b8d133.jpg 972w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/cbedbac33557ce6f0326e0fc38b8d133-300x259.jpg 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/cbedbac33557ce6f0326e0fc38b8d133-768x663.jpg 768w\" sizes=\"auto, (max-width: 972px) 100vw, 972px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">(c) \u5c0e\u4f53\u5186\u677f\u306b\u751f\u3058\u308b\u96fb\u8377<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u5c0e\u4f53\u5186\u76e4\u304c\u6d6e\u4e0a\u3059\u308b\u6642\u3001\u4e0b\u306e\u5c0e\u4f53\u5186\u677f\u304b\u3089\u306e\u96fb\u8377\u306e\u79fb\u52d5\u304c\u306a\u304f\u3001\u305d\u306e\u4e2d\u3067\u306e\u96fb\u6c17\u91cf\u4fdd\u5b58\u304c\u3059\u308b\u3053\u3068\u3002\u76f4\u5217\u306b\u7e4b\u304c\u308c\u305f2\u3064\u306e\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u304c\u73fe\u308c\u308b\u3053\u3068\u3002\u3053\u306e2\u3064\u304c\u5927\u304d\u306a\u30dd\u30a4\u30f3\u30c8\u3067\u3059\u306d\uff01<\/mark><\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"1024\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/12\/ScienceTokyo2025-2c_mov-1-1024x1024.gif\" alt=\"\" class=\"wp-image-701 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/12\/ScienceTokyo2025-2c_mov-1-1024x1024.gif 1024w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/12\/ScienceTokyo2025-2c_mov-1-300x300.gif 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/12\/ScienceTokyo2025-2c_mov-1-150x150.gif 150w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/12\/ScienceTokyo2025-2c_mov-1-768x768.gif 768w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u305d\u3057\u3066\u3001\u554f\u984c\u6587\u306e\u300c\u6975\u677f\u3068\u5c0e\u4f53\u5186\u677f\u306e\u63a5\u89e6\u6642\u306b\u304a\u3051\u308b\u96fb\u8377\u306e\u79fb\u52d5\u306f\u901f\u3084\u304b\u306b\u8d77\u3053\u308b\u3082\u306e\u3068\u3059\u308b\u300d\u3068\u3044\u3046\u8a18\u8ff0\u304b\u3089\u3001<\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u300c\u5c0e\u4f53\u5186\u677f\u3092\u4e0b\u306e\u6975\u677f\u306b\u63a5\u89e6\u3055\u305b\u308b\u300d\u2192\u300c\u4e0b\u306e\u6975\u677f\u304b\u3089\u5c0e\u4f53\u5186\u677f\u306b\u96fb\u8377\u304c\u79fb\u52d5\u3059\u308b\u300d\u2192\u6d6e\u4e0a\u3059\u308b\u300d<\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u306e\u9806\u3067\u73fe\u8c61\u304c\u8d77\u304d\u308b\u3068\u8aad\u307f\u53d6\u308c\u307e\u3059\u3002<\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u4e0b\u306e\u6975\u677f\u306b\u5c0e\u4f53\u5186\u677f\u3092\u63a5\u89e6\u3055\u305b\u308b\u6642\u306e\u4e0b\u306e\u6975\u677f\u306e\u96fb\u6c17\u91cf\u306f(a)\u3088\u308a\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{- \\frac{ \\epsilon _0 SV}{d} } $$<\/div>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u5c0e\u4f53\u5186\u677f\u3068\u4e0b\u306e\u6975\u677f\u306e\u8ddd\u96e2\u304c\ud835\udc66\u306e\u6642\u306b\u304a\u3051\u308b\u5c0e\u4f53\u5186\u677f\u306e\u4e0a\u5074\u3068\u4e0b\u5074\u306e\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306e\u96fb\u6c17\u5bb9\u91cf\u3092\u305d\u308c\u305e\u308c\ud835\udc36\u2081, \ud835\udc36\u2019\u2081\u3068\u3059\u308b\u3068\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{C_1 = \\epsilon _0 \\frac{S}{d-y} } $$\n$$ \\color{black}{C&#8217;_1 = \\epsilon _0 \\frac{S}{y} } $$<\/div>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/10\/ScienceTokyo2025-2c_img.png\" alt=\"\" class=\"wp-image-586 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/10\/ScienceTokyo2025-2c_img.png 600w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/10\/ScienceTokyo2025-2c_img-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/10\/ScienceTokyo2025-2c_img-150x150.png 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u5c0e\u4f53\u5186\u677f\u306e\u4e0a\u5074\u3068\u4e0b\u5074\u306e\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306b\u84c4\u3048\u3089\u308c\u305f\u96fb\u6c17\u91cf\u3092\u305d\u308c\u305e\u308c\ud835\udc44\u2081, \ud835\udc44\u2019\u2081\u3068\u3057\u3001\u5c0e\u4f53\u5186\u76e4\u4e0a\u306e\u96fb\u6c17\u91cf\u4fdd\u5b58\u5247\u3088\u308a\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{-Q_1 + Q&#8217;_1 = &#8211; \\frac{ \\epsilon _0 SV}{d} } $$<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u307e\u305f\u3001\u30ad\u30eb\u30d2\u30db\u30c3\u30d5\u306e\u7b2c2\u6cd5\u5247\u3088\u308a\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{V = \\frac{Q_1}{C_1} + \\frac{Q&#8217;_1}{C&#8217;_1} } $$\n$$ \\color{black}{ \\therefore -Q_1 = &#8211; \\frac{ \\epsilon _ 0 SV}{d^2} (d+y) , Q&#8217;_1 = \\frac{ \\epsilon _0 SV}{d^2} y} $$<\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">(d) \u305d\u308c\u305e\u308c\u306e\u5e73\u884c\u677f\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306e\u9759\u96fb\u30a8\u30cd\u30eb\u30ae\u30fc<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u6c42\u3081\u308b\u5168\u9759\u96fb\u30a8\u30cd\u30eb\u30ae\u30fc\u306f\u3001\u5c0e\u4f53\u5186\u677f\u306e\u4e0a\u5074\u3068\u4e0b\u5074\u306e\u30b3\u30f3\u30c7\u30f3\u30b5\u30fc\u306e\u9759\u96fb\u30a8\u30cd\u30eb\u30ae\u30fc\u306e\u548c\u3067\u3042\u308b\u305f\u3081\u3001<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{U_1 = \\frac{1}{2} \\frac{Q_1}{C_1} + \\frac{1}{2} \\frac{Q&#8217;_1}{C&#8217;_1} = \\frac{ \\epsilon _0 SV^2}{2d} \\left \\{ 1 + \\frac{y}{d} &#8211; \\left ( \\frac{y}{d} \\right ) ^2 \\right \\} } $$<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">(e) \u5c0e\u4f53\u5186\u677f\u306e\u4e0a\u6607\u901f\u5ea6<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3044\u3088\u3044\u3088\u3001\u96fb\u78c1\u6c17\u5b66\u306b\u529b\u5b66\u304c\u878d\u5408\u3055\u308c\u305f\u554f\u984c\u306b\u5165\u3063\u3066\u3044\u304d\u307e\u3059\u3002\u3053\u306e\u554f\u984c\u3092\u4e57\u308a\u8d8a\u3048\u3089\u308c\u308c\u3070\u3001\u305d\u306e\u5148\u3092\u89e3\u304f\u3053\u3068\u3082\u7c21\u5358\u306b\u306a\u3063\u3066\u3044\u304f\u305f\u3081\u3001\u5408\u5426\u3092\u5206\u3051\u308b\u3068\u8a00\u3063\u3066\u3082\u904e\u8a00\u3067\u306f\u7121\u3044\u3067\u3057\u3087\u3046\u3002<\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u4eca\u56de\u3001\u5c0e\u4f53\u5186\u677f\u306e\u901f\u5ea6\u3092\u8003\u3048\u308b\u4e0a\u3067\u3001\u52a0\u901f\u5ea6\u3068\u6642\u9593\u3092\u7528\u3044\u305f\u300c\u7b49\u52a0\u901f\u5ea6\u904b\u52d5\u306e\u516c\u5f0f\u300d\u3092\u4f7f\u3046\u304b\u3001\u904b\u52d5\u30a8\u30cd\u30eb\u30ae\u30fc\u7528\u3044\u305f\u300c\u529b\u5b66\u7684\u30a8\u30cd\u30eb\u30ae\u30fc\u4fdd\u5b58\u5247\u300d\u3092\u4f7f\u3046\u304b\u3092\u8003\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u4eca\u56de\u306f\u5c0e\u4f53\u5186\u677f\u306b\u304b\u304b\u308b\u9759\u96fb\u6c17\u529b\u304c\u4e00\u5b9a\u3067\u306a\u3044\u305f\u3081\u52a0\u901f\u5ea6\u304c\u4e00\u5b9a\u3067\u306f\u306a\u3044\u3067\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u300c\u529b\u5b66\u7684\u30a8\u30cd\u30eb\u30ae\u30fc\u4fdd\u5b58\u5247\u300d\u3092\u7528\u3044\u3067\u5c0e\u51fa\u3057\u3066\u3044\u304f\u306e\u304c\u8ce2\u660e\u3067\u3057\u3087\u3046\uff01<\/mark><\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/10\/ScienceTokyo2025-2e.png\" alt=\"\" class=\"wp-image-587 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/10\/ScienceTokyo2025-2e.png 600w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/10\/ScienceTokyo2025-2e-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/10\/ScienceTokyo2025-2e-150x150.png 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u5c0e\u4f53\u5186\u677f\u306b\u304b\u304b\u308b\u529b\u306f\u91cd\u529b\u3068\u9759\u96fb\u6c17\u529b\u306e2\u3064\u3067\u91cd\u529b\u306f\u925b\u76f4\u4e0b\u5411\u304d\u3001\u9759\u96fb\u6c17\u529b\u306f\u96fb\u8377\u304c\u8ca0\u304b\u3064\u96fb\u5834\u304c\u925b\u76f4\u4e0b\u5411\u304d\u306e\u305f\u3081\u925b\u76f4\u4e0a\u5411\u304d\u304a\u306a\u3063\u3066\u307e\u3059\u3002<\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3053\u306e\u6642\u3001\u91cd\u529b\u3068\u9759\u96fb\u6c17\u529b\u306f\u4fdd\u5b58\u529b\u3067\u3042\u308b\u305f\u3081\u3001\u529b\u5b66\u7684\u30a8\u30cd\u30eb\u30ae\u30fc\u306f\u4fdd\u5b58\u3057\u307e\u3059\u3002\u3088\u3063\u3066\u5c0e\u4f53\u5186\u677f\u306e\u4e0a\u6607\u901f\u5ea6\ud835\udc63\u306f\u3001\u529b\u5b66\u7684\u30a8\u30cd\u30eb\u30ae\u30fc\u4fdd\u5b58\u5247\u3088\u308a\u3001<\/mark><\/p>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{ \\frac{1}{2} m \\cdot 0^2 + 0 + U_0 = \\frac{1}{2} mv^2 + mgy + U_1} $$\n$$ \\color{black}{ \\therefore v = \\sqrt{ \\frac{ \\epsilon _0 SV^2}{md^2} y \\left ( 1 + \\frac{y}{d} \\right ) &#8211; 2gy} } $$<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">(f) \u96fb\u6d41\u8a08\u3092\u6d41\u308c\u308b\u96fb\u6d41<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u96fb\u6d41\u3068\u306f\u5358\u4f4d\u6642\u9593\u3042\u305f\u308a\u306b\u901a\u904e\u3059\u308b\u96fb\u6c17\u91cf\u3067\u3042\u308b\u305f\u3081\u3001\u96fb\u6d41\u8a08\u3092\u6d41\u308c\u308b\u96fb\u6d41\u306e\u5024\u306f\ud835\udc44\u2081\u306e\u5358\u4f4d\u6642\u9593\u3042\u305f\u308a\u306e\u5909\u5316\u91cf\u3092\u8868\u3059\u3002<\/mark><\/p>\n\n\n\n<div class=\"wp-block-mathml-mathmlblock\">$$ \\color{black}{I = \\frac{dQ_1}{dt} = \\frac{dQ_1}{dy} \\cdot \\frac{dy}{dt} } $$\n$$ \\color{black}{ \\frac{dQ_1}{dy} = \\frac{ \\epsilon _0 SV}{d^2} } $$\n$$ \\color{black}{ \\frac{dy}{dt} = v} $$\n$$ \\color{black}{I = \\frac{dQ_1}{dt} = \\frac{ \\epsilon _0 SV}{d^2} \\sqrt{ \\frac{ \\epsilon _0 SV^2}{md^2} y \\left ( 1 + \\frac{y}{d} \\right ) &#8211; 2gy} } $$<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">(g) \u4e0a\u306e\u6975\u677f\u306b\u63a5\u89e6\u3057\u305f\u5f8c\u3082\u542b\u3081\u305f\u904b\u52d5<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"972\" height=\"366\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/0c170d411978a83bf380ab6d6ccffbcb.png\" alt=\"\" class=\"wp-image-544\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/0c170d411978a83bf380ab6d6ccffbcb.png 972w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/0c170d411978a83bf380ab6d6ccffbcb-300x113.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/0c170d411978a83bf380ab6d6ccffbcb-768x289.png 768w\" sizes=\"auto, (max-width: 972px) 100vw, 972px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u6700\u5f8c\u306b\u3001\u5c0e\u4f53\u5186\u677f\u304c\u4e0a\u306e\u6975\u677f\u306b\u63a5\u3057\u305f\u5f8c\u3082\u542b\u3081\u305f\u904b\u52d5\u306b\u304a\u3044\u3066\u3001\ud835\udc66-\ud835\udc61\u30b0\u30e9\u30d5\u3092\u8003\u3048\u308b\u3002(e)\u306e\u7b54\u3048\u3092\u7a4d\u5206\u3057\u3066\u8003\u3048\u3066\u3082\u826f\u3044\u304c\u3001\u3053\u3053\u3067\u306f\u7a76\u6975\u306e\u6d88\u53bb\u6cd5\u3067\u554f\u984c\u3092\u89e3\u304f\u3084\u308a\u65b9\u3092\u7d39\u4ecb\u3057\u3066\u3044\u304d\u307e\u3059\uff01<\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\ud835\udc61=0\u306e\u3068\u304d\u306e\u5c0e\u4f53\u5186\u677f\u306e\u901f\u5ea6\u304c0\u3067\u3042\u308b\u3053\u3068\u306b\u7740\u76ee\u2192\u2462\u2463\u2464\u2465\u246a\u246b\u246c\u246d\u246f\u2471\u2472\u306f\u00d7<\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u5b8c\u5168\u975e\u5f3e\u6027\u885d\u7a81\u306e\u305f\u3081\u3001\ud835\udc61=\ud835\udc61<sub>1<\/sub>\u306e\u3068\u304d\u5c0e\u4f53\u5186\u677f\u306e\u901f\u5ea6\u306f0\u306b\u306a\u308b\u3053\u3068\u306b\u7740\u76ee\u2192\u2462\u2463\u2466\u2467\u246a\u246b\u246c\u246d\u306f\u00d7<\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3053\u306e\u6642\u70b9\u3067\u6b8b\u308b\u306e\u306f\u3001\u2460\u2461\u2468\u2469\u246e\u2470<\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u5c0e\u4f53\u5186\u677f\u306e\u4e0a\u6607\u306e\u9593\u3001\u5c0e\u4f53\u5186\u677f\u3068\u4e0a\u306e\u6975\u677f\u306e\u5f15\u529b\u304c\u3088\u308a\u5927\u304d\u304f\u306a\u308b\u305f\u3081\u3001\u4e0a\u6607\u901f\u5ea6\u3082\u5927\u304d\u304f\u306a\u308a\u7d9a\u3051\u308b(\u63a5\u7dda\u306e\u50be\u304d\u304c\u5927\u304d\u304f\u306a\u308b=\u4e0b\u306b\u51f8)\u3053\u3068\u306b\u7740\u76ee\u2192\u2468\u2469\u246a\u246b\u246c\u246d\u246f\u2470\u2471\u306f\u00d7<\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u6700\u5f8c\u306b\u6b8b\u308b\u306e\u306f\u3001\u2460\u2461\u246e<\/mark><\/p>\n\n\n\n<div class=\"wp-block-media-text is-stacked-on-mobile\"><figure class=\"wp-block-media-text__media\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"600\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/10\/ScienceTokyo2025-2g.png\" alt=\"\" class=\"wp-image-588 size-full\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/10\/ScienceTokyo2025-2g.png 600w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/10\/ScienceTokyo2025-2g-300x300.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/10\/ScienceTokyo2025-2g-150x150.png 150w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/figure><div class=\"wp-block-media-text__content\">\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u5c0e\u4f53\u5186\u677f\u304c\u4e0a\u306e\u6975\u677f\u306b\u3064\u3044\u305f\u5f8c\u3001\u5c0e\u4f53\u5186\u677f\u306e\u96fb\u8377\u306f\u6b63\u306b\u306a\u308a\u9759\u96fb\u6c17\u529b\u304c\u4e0b\u5411\u304d\u306b\u306a\u308b\u3002\u9759\u96fb\u6c17\u529b\u3068\u91cd\u529b\u304c\u4e21\u65b9\u540c\u3058\u5411\u304d\u306e\u305f\u3081\u3001\u4e0a\u6607\u52a0\u901f\u5ea6\u3088\u308a\u3082\u4e0b\u964d\u52a0\u901f\u5ea6\u306e\u65b9\u304c\u5927\u304d\u3044\u3002<\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u307e\u305f\u3001\u5c0e\u4f53\u5186\u677f\u306e\u4e0a\u306b\u63a5\u3057\u305f\u72b6\u614b\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u3082\u306a\u3044\u3002<\/mark><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3088\u3063\u3066\u3001\ud835\udc61<sub>1<\/sub> &gt; \ud835\udc61<sub>2<\/sub>\u2192\u2461\u2463\u2465\u2467\u2469\u246b\u246d\u246e\u246f\u2470\u2471\u2472\u306f\u00d7<\/mark><\/p>\n<\/div><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u4ee5\u4e0a\u304b\u3089\u3001\u7b54\u3048\u306f\u2460\u306b\u7d5e\u308c\u307e\u3059\u3002<\/mark><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"932\" height=\"1024\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/99bb7377b28e0df0a298ec8ae2650d39-932x1024.png\" alt=\"\" class=\"wp-image-545\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/99bb7377b28e0df0a298ec8ae2650d39-932x1024.png 932w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/99bb7377b28e0df0a298ec8ae2650d39-273x300.png 273w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/99bb7377b28e0df0a298ec8ae2650d39-768x844.png 768w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/99bb7377b28e0df0a298ec8ae2650d39.png 972w\" sizes=\"auto, (max-width: 932px) 100vw, 932px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"972\" height=\"786\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/f85179f496ce632f89765d5785ee0db1.png\" alt=\"\" class=\"wp-image-546\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/f85179f496ce632f89765d5785ee0db1.png 972w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/f85179f496ce632f89765d5785ee0db1-300x243.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/f85179f496ce632f89765d5785ee0db1-768x621.png 768w\" sizes=\"auto, (max-width: 972px) 100vw, 972px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"972\" height=\"753\" src=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/76857aa83562739f56d6478146793f21.png\" alt=\"\" class=\"wp-image-555\" srcset=\"https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/76857aa83562739f56d6478146793f21.png 972w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/76857aa83562739f56d6478146793f21-300x232.png 300w, https:\/\/japper-tapchka.blog\/Diary\/wp-content\/uploads\/2025\/09\/76857aa83562739f56d6478146793f21-768x595.png 768w\" sizes=\"auto, (max-width: 972px) 100vw, 972px\" \/><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\">\u3042\u3068\u304c\u304d<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\"><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-black-color\">\u3044\u304b\u304c\u3067\u3057\u305f\u3067\u3057\u3087\u3046\u304b\uff1f\u96fb\u78c1\u6c17\u5b66\u306f\u6559\u79d1\u66f8\u304b\u3089\u306e\u5fdc\u7528\u304c\u5c11\u306a\u3044\u5206\u57fa\u672c\u7684\u306a\u516c\u5f0f\u3092\u4f7f\u3063\u305f\u554f\u984c\u304c\u591a\u304f\u306a\u3063\u3066\u304a\u308a\u307e\u3059\u3002\uff08\u30ad\u30eb\u30d2\u30db\u30c3\u30d5\u3084\u96fb\u6c17\u91cf\u4fdd\u5b58\u5247\u306a\u3069\uff09\u6771\u4eac\u79d1\u5b66\u5927\u5b66\u306e\u554f\u984c\u3067\u306f\u96fb\u78c1\u6c17\u5b66\u3068\u5225\u306e\u5206\u91ce\u3092\u878d\u5408\u3055\u305b\u308b\u3053\u3068\u304c\u591a\u3044\u305f\u3081\u3001\u5c11\u3057\u554f\u984c\u304c\u8907\u96d1\u306b\u898b\u3048\u307e\u3059\u304c\u4e00\u3064\u4e00\u3064\u72b6\u6cc1\u3092\u6574\u7406\u3057\u3066\u307f\u308b\u3068\u3001\u7c21\u5358\u306b\u554f\u984c\u3092\u89e3\u3044\u3066\u3044\u304f\u3053\u3068\u304c\u3067\u304d\u308b\u305f\u3081\u3001\u3044\u304f\u3064\u304b\u30b1\u30fc\u30b9\u3092\u7d4c\u9a13\u3057\u3066\u6163\u308c\u3066\u3044\u304f\u3068\u9ad8\u5f97\u70b9\u3092\u72d9\u3048\u308b\u3068\u601d\u3044\u307e\u3059\uff01<\/mark><\/p>\n\n\n\n<div 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