{"id":20526,"date":"2025-07-07T18:15:53","date_gmt":"2025-07-07T11:15:53","guid":{"rendered":"https:\/\/www.ckconitsha.com\/vn\/?p=20526"},"modified":"2025-07-08T21:34:59","modified_gmt":"2025-07-08T14:34:59","slug":"ly-thuyet-vat-ly-8-nhiet-nang-la-gi-ung-dung-cua-no-ra-sao","status":"publish","type":"post","link":"https:\/\/www.ckconitsha.com\/vn\/ly-thuyet-vat-ly-8-nhiet-nang-la-gi-ung-dung-cua-no-ra-sao\/","title":{"rendered":"L\u00fd thuy\u1ebft v\u1eadt l\u00fd 8: Nhi\u1ec7t n\u0103ng l\u00e0 g\u00ec? &amp; \u1ee8ng d\u1ee5ng c\u1ee7a n\u00f3 ra sao?"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.ckconitsha.com\/vn\/ly-thuyet-vat-ly-8-nhiet-nang-la-gi-ung-dung-cua-no-ra-sao\/#Nang_luong_nhiet_la_gi_Don_vi_nang_luong_nhiet_la_gi\" >N\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t l\u00e0 g\u00ec? \u0110\u01a1n v\u1ecb n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t l\u00e0 g\u00ec<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.ckconitsha.com\/vn\/ly-thuyet-vat-ly-8-nhiet-nang-la-gi-ung-dung-cua-no-ra-sao\/#Co_mot_so_cach_de_thay_doi_suc_nong_cua_doi_tuong\" >C\u00f3 m\u1ed9t s\u1ed1 c\u00e1ch \u0111\u1ec3 thay \u0111\u1ed5i s\u1ee9c n\u00f3ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.ckconitsha.com\/vn\/ly-thuyet-vat-ly-8-nhiet-nang-la-gi-ung-dung-cua-no-ra-sao\/#Thuc_hien\" >Th\u1ef1c hi\u1ec7n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.ckconitsha.com\/vn\/ly-thuyet-vat-ly-8-nhiet-nang-la-gi-ung-dung-cua-no-ra-sao\/#Truyen_nhiet\" >Truy\u1ec1n nhi\u1ec7t<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.ckconitsha.com\/vn\/ly-thuyet-vat-ly-8-nhiet-nang-la-gi-ung-dung-cua-no-ra-sao\/#Nhiet_la_gi\" >Nhi\u1ec7t l\u00e0 g\u00ec<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.ckconitsha.com\/vn\/ly-thuyet-vat-ly-8-nhiet-nang-la-gi-ung-dung-cua-no-ra-sao\/#Cong_thuc_tinh_toan_nhiet\" >C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n nhi\u1ec7t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.ckconitsha.com\/vn\/ly-thuyet-vat-ly-8-nhiet-nang-la-gi-ung-dung-cua-no-ra-sao\/#Ap_dung_nhiet_trong_cuoc_song\" >\u00c1p d\u1ee5ng nhi\u1ec7t trong cu\u1ed9c s\u1ed1ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.ckconitsha.com\/vn\/ly-thuyet-vat-ly-8-nhiet-nang-la-gi-ung-dung-cua-no-ra-sao\/#Giai_cac_bai_tap_nhiet_vat_ly_8_Bai_21\" >Gi\u1ea3i c\u00e1c b\u00e0i t\u1eadp nhi\u1ec7t v\u1eadt l\u00fd 8 B\u00e0i 21<\/a><\/li><\/ul><\/nav><\/div>\n<\/p>\n<p dir=\"ltr\">Theo ch\u01b0\u01a1ng tr\u00ecnh V\u1eadt l\u00fd 8, ch\u00fang ta \u0111\u00e3 h\u1ecdc \u0111\u01b0\u1ee3c ch\u1ee9c n\u0103ng l\u00e0 g\u00ec? N\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc c\u00f3 li\u00ean quan \u0111\u1ebfn t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn \u0111\u1ed1i t\u01b0\u1ee3ng. Ngo\u00e0i \u0111\u1ea7u ra, c\u00f2n c\u00f3 m\u1ed9t thu\u1eadt ng\u1eef li\u00ean quan \u0111\u1ebfn nhi\u1ec7t ho\u1eb7c nhi\u1ec7t \u0111\u1ed9 l\u00e0 n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t. \u0110\u00e2y l\u00e0 m\u1ed9t ph\u1ea7n th\u00fa v\u1ecb c\u1ee7a ki\u1ebfn \u200b\u200bth\u1ee9c cho sinh vi\u00ean. H\u00e3y \u0111\u1ec3 Kh\u1ec9 t\u00ecm hi\u1ec3u nhi\u1ec7t l\u00e0 g\u00ec, c\u00e1c thu\u1ed9c t\u00ednh v\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a n\u00f3 th\u00f4ng qua b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y. <\/p>\n<p>                                    <img decoding=\"async\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/image\/600x480.png\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Nang_luong_nhiet_la_gi_Don_vi_nang_luong_nhiet_la_gi\"><\/span>N\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t l\u00e0 g\u00ec? \u0110\u01a1n v\u1ecb n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t l\u00e0 g\u00ec<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/nhiet-nang-la-gi-1.jpg\" alt=\"Gi\u1ea3i th\u00edch nhi\u1ec7t l\u00e0 g\u00ec? (\u1ea2nh: Canva.com)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">N\u1ebfu ch\u00fang ta n\u00f3i n\u0103ng l\u01b0\u1ee3ng l\u00e0 t\u1ed5ng n\u0103ng l\u01b0\u1ee3ng v\u00e0 ti\u1ec1m n\u0103ng, nhi\u1ec7t \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a nh\u01b0 sau: <\/p>\n<p dir=\"ltr\">Nhi\u1ec7t c\u1ee7a m\u1ed9t v\u1eadt b\u1eb1ng v\u1edbi t\u1ed5ng n\u0103ng l\u01b0\u1ee3ng c\u1ee7a c\u00e1c ph\u00e2n t\u1eed t\u1ea1o n\u00ean v\u1eadt th\u1ec3.<\/p>\n<p dir=\"ltr\">=&gt; Nhi\u1ec7t ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9ng n\u0103ng. <\/p>\n<p dir=\"ltr\">\u0110\u01a1n v\u1ecb n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t l\u00e0 Jun (J). <\/p>\n<p dir=\"ltr\">L\u01b0u \u00fd: C\u00e1c nguy\u00ean t\u1eed v\u00e0 ph\u00e2n t\u1eed l\u00e0 c\u00e1c th\u00e0nh ph\u1ea7n t\u1ea1o n\u00ean c\u00e1c ch\u1ea5t b\u00ean trong v\u1eadt th\u1ec3. Nh\u1eefng nguy\u00ean t\u1eed v\u00e0 ph\u00e2n t\u1eed n\u00e0y kh\u00f4ng \u0111\u1ee9ng y\u00ean v\u00e0 di chuy\u1ec3n kh\u00f4ng ng\u1eebng. H\u1ecd di chuy\u1ec3n nhanh h\u01a1n khi nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n. Do \u0111\u00f3, ch\u00fang t\u00f4i n\u00f3i r\u1eb1ng nhi\u1ec7t c\u00f3 li\u00ean quan r\u1ea5t ch\u1eb7t ch\u1ebd \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9. <\/p>\n<p dir=\"ltr\">=&gt; Nhi\u1ec7t \u0111\u1ed9 c\u00e0ng cao, ph\u00e2n t\u1eed t\u1ea1o n\u00ean v\u1eadt th\u1ec3 chuy\u1ec3n \u0111\u1ed9ng c\u00e0ng nhanh th\u00ec nhi\u1ec7t c\u00e0ng l\u1edbn. <\/p>\n<p dir=\"ltr\">V\u00ed d\u1ee5 v\u1ec1 s\u1ee9c n\u00f3ng: \u0110\u01b0a tay c\u1ee7a b\u1ea1n v\u00e0o nhau v\u00e0 nhanh ch\u00f3ng, sau m\u1ed9t th\u1eddi gian, ch\u00fang t\u00f4i th\u1ea5y b\u00e0n tay n\u00f3ng l\u00ean. Hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y cho th\u1ea5y ch\u1ee9c n\u0103ng \u0111\u00e3 \u0111\u01b0\u1ee3c chuy\u1ec3n h\u00f3a th\u00e0nh nhi\u1ec7t.<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Co_mot_so_cach_de_thay_doi_suc_nong_cua_doi_tuong\"><\/span>C\u00f3 m\u1ed9t s\u1ed1 c\u00e1ch \u0111\u1ec3 thay \u0111\u1ed5i s\u1ee9c n\u00f3ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">\u0110\u1ec3 thay \u0111\u1ed5i nhi\u1ec7t, c\u00f3 hai c\u00e1ch: t\u0103ng nhi\u1ec7t \u0111\u1ed9 c\u1ee7a v\u1eadt th\u1ec3 b\u1eb1ng c\u00e1ch th\u1ef1c hi\u1ec7n c\u00f4ng vi\u1ec7c v\u00e0 c\u00e1ch truy\u1ec1n nhi\u1ec7t th\u1ee9 hai. H\u00e3y t\u00ecm hi\u1ec3u v\u1ec1 hai c\u00e1ch c\u1ee5 th\u1ec3 d\u01b0\u1edbi \u0111\u00e2y. <\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Thuc_hien\"><\/span>Th\u1ef1c hi\u1ec7n <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/nhiet-nang-la-gi-2.jpg\" alt=\"Ch\u00e0 tay nhanh ch\u00f3ng \u0111\u1ec3 n\u00f3ng l\u00ean. (\u1ea2nh: Shutterstock.com)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">Quay l\u1ea1i v\u00ed d\u1ee5 tr\u00ean, trong tr\u01b0\u1eddng h\u1ee3p ch\u00fang t\u00f4i s\u1eed d\u1ee5ng c\u1ea3 hai tay \u0111\u1ec3 ch\u00e0 l\u1ea1i v\u1edbi nhau. L\u01b0u \u00fd r\u1eb1ng b\u00e0n tay di chuy\u1ec3n c\u00e0ng nhanh, nhi\u1ec7t \u0111\u1ed9 trong tay c\u0169ng nhanh h\u01a1n. Ch\u00fang t\u00f4i th\u1ea5y s\u1ee9c n\u00f3ng trong tay \u0111\u00e3 t\u0103ng l\u00ean. B\u1ea3n ch\u1ea5t b\u00ean trong l\u00e0 c\u00e1c ph\u00e2n t\u1eed \u0111\u00e3 di chuy\u1ec3n nhanh h\u01a1n, v\u00e0 b\u00e0n tay kh\u00f4ng c\u00f2n n\u00f3ng n\u1eefa n\u1ebfu ch\u00fang ta d\u1eebng l\u1ea1i. <\/p>\n<p dir=\"ltr\">Ho\u1eb7c \u0111\u1ec3 l\u00e0m n\u00f3ng m\u1ed9t \u0111\u1ed3ng xu, ch\u00fang ta c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng l\u1ef1c \u0111\u1ec3 h\u00e0nh \u0111\u1ed9ng tr\u00ean \u0111\u1ed3ng xu \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00f4ng b\u1eb1ng b\u1eb1ng c\u00e1ch c\u1ecd x\u00e1t \u0111\u1ed3ng xu v\u00e0o m\u1ed9t b\u1ec1 m\u1eb7t c\u1ee9ng nh\u1ea5t \u0111\u1ecbnh. Ch\u1eafc ch\u1eafn nhi\u1ec7t \u0111\u1ed9 c\u1ee7a n\u00f3 s\u1ebd n\u00f3ng l\u00ean v\u00e0 t\u0103ng nhi\u1ec7t. Ph\u1ea7n l\u1edbn ph\u01b0\u01a1ng ph\u00e1p n\u00e0y v\u1edbi c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng l\u00e0m cho nhi\u1ec7t t\u0103ng nhi\u1ec7t. <\/p>\n<p dir=\"ltr\">V\u00ec v\u1eady, k\u1ebft lu\u1eadn r\u1eb1ng ch\u00fang ta c\u00f3 c\u00e1ch \u0111\u1ea7u ti\u00ean l\u00e0 th\u1ef1c hi\u1ec7n c\u00f4ng vi\u1ec7c l\u00e0 s\u1eed d\u1ee5ng l\u1ef1c tr\u00ean v\u1eadt th\u1ec3 \u0111\u1ec3 t\u0103ng nhi\u1ec7t c\u1ee7a v\u1eadt th\u1ec3. <\/p>\n<h3 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Truyen_nhiet\"><\/span>Truy\u1ec1n nhi\u1ec7t <span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/nhiet-nang-la-gi-3.jpg\" alt=\"Nhi\u1ec7t t\u1eeb l\u1eeda \u0111\u1ebfn n\u1ed3i l\u00e0m cho b\u00ean trong n\u1ed3i c\u0169ng n\u00f3ng l\u00ean. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">Truy\u1ec1n nhi\u1ec7t l\u00e0 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng c\u00f3 th\u1ec3 nh\u00ecn th\u1ea5y trong cu\u1ed9c s\u1ed1ng. \u0110\u01a1n gi\u1ea3n l\u00e0 khi ch\u00fang ta \u0111\u1eb7t tay v\u00e0o m\u1ed9t ly n\u01b0\u1edbc n\u00f3ng, nhi\u1ec7t \u0111\u1ed9 n\u00f3ng c\u1ee7a n\u01b0\u1edbc l\u00e0m cho b\u00e0n tay n\u00f3ng ho\u1eb7c b\u1ecfng.<\/p>\n<p dir=\"ltr\">T\u01b0\u01a1ng t\u1ef1 nh\u01b0 m\u1ed9t m\u1ea3nh \u0111\u1ed3ng xu trong c\u1ed1c n\u01b0\u1edbc n\u00f3ng, nhi\u1ec7t \u0111\u1ed9 c\u1ee7a \u0111\u1ed3ng xu c\u0169ng t\u0103ng, do \u0111\u00f3 nhi\u1ec7t t\u0103ng l\u00ean. N\u01b0\u1edbc n\u00f3ng \u0111\u00e3 chuy\u1ec3n nhi\u1ec7t \u0111\u1ed9 v\u00e0o \u0111\u1ed3ng xu. <\/p>\n<p dir=\"ltr\">Truy\u1ec1n nhi\u1ec7t ch\u1ec9 x\u1ea3y ra khi hai v\u1eadt c\u00f3 nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau. V\u00e0 nhi\u1ec7t s\u1ebd truy\u1ec1n t\u1eeb nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n sang nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n. <\/p>\n<p dir=\"ltr\">K\u1ebft lu\u1eadn: Ch\u00fang t\u00f4i c\u00f3 c\u00e1ch th\u1ee9 hai \u0111\u1ec3 thay \u0111\u1ed5i nhi\u1ec7t c\u1ee7a v\u1eadt ch\u00ednh l\u00e0 chuy\u1ec3n nhi\u1ec7t sang \u0111\u1ed1i t\u01b0\u1ee3ng. C\u00f3 m\u1ed9t s\u1ed1 h\u00ecnh th\u1ee9c truy\u1ec1n nhi\u1ec7t kh\u00e1c nhau nh\u01b0: c\u00e1c v\u1eadt th\u1ec3 kh\u00f4 d\u01b0\u1edbi \u00e1nh m\u1eb7t tr\u1eddi, c\u00e1c v\u1eadt th\u1ec3 tr\u00ean l\u1eeda, th\u1ea3 \u0111\u1ed3 v\u1eadt v\u00e0o n\u01b0\u1edbc n\u00f3ng &#8230;<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Nhiet_la_gi\"><\/span>Nhi\u1ec7t l\u00e0 g\u00ec <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">M\u1ed9t ph\u1ea7n li\u00ean quan tr\u1ef1c ti\u1ebfp \u0111\u1ebfn nhi\u1ec7t l\u00e0 nhi\u1ec7t. Nhi\u1ec7t l\u00e0 nhi\u1ec7t m\u00e0 v\u1eadt th\u1ec3 \u0111\u01b0\u1ee3c th\u00eam ho\u1eb7c bi\u1ebfn m\u1ea5t trong qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t c\u1ee7a v\u1eadt. <\/p>\n<p dir=\"ltr\">Bi\u1ec3u t\u01b0\u1ee3ng nhi\u1ec7t l\u00e0 Q, \u0111\u01a1n v\u1ecb c\u1ee7a nhi\u1ec7t l\u00e0 J (Jun), 1 KJ = 1000 J. (Tr\u00ean th\u1ef1c t\u1ebf, c\u00f3 nhi\u1ec1u \u0111\u01a1n v\u1ecb kh\u00e1c \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111o nhi\u1ec7t v\u00e0 ch\u00fang ta c\u00f3 th\u1ec3 chuy\u1ec3n \u0111\u1ed5i ho\u00e0n to\u00e0n l\u1eabn nhau). <\/p>\n<p dir=\"ltr\"><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/nhiet-nang-la-gi-4.jpg\" alt=\"\u0110\u1ecbnh ngh\u0129a c\u1ee7a nhi\u1ec7t l\u00e0 g\u00ec? (\u1ea2nh: Kh\u1ec9)\" width=\"100%\"><\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Cong_thuc_tinh_toan_nhiet\"><\/span>C\u00f4ng th\u1ee9c t\u00ednh to\u00e1n nhi\u1ec7t <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">C\u00f4ng th\u1ee9c \u0111\u1ec3 t\u00ednh to\u00e1n nhi\u1ec7t l\u00e0: <\/p>\n<table style=\"border-collapse: collapse;width: 100%;background-color: #c2e0f4;border-color: #4e4c50;border-style: solid\" border=\"1\">\n<tr>\n<td style=\"width: 99.0477%;text-align: center;border: 0.5px solid #4e4c50\">\n<p>Q = mc \u2206t <\/p>\n<\/td>\n<\/tr>\n<\/table>\n<p dir=\"ltr\">Ghi ch\u00fa: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Q: Nhi\u1ec7t (J) <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">M: Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng (kg) <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">C: Nhi\u1ec7t c\u1ee7a v\u1eadt th\u1ec3 (j\/kg.k)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u2206T: Nhi\u1ec7t \u0111\u1ed9 t\u0103ng ho\u1eb7c gi\u1ea3m c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng (c\u00f2n \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 bi\u1ebfn \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9. \u2206T = T2 &#8211; T1)<\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">\u2206T&gt; 0, sau \u0111\u00f3 nhi\u1ec7t, \u2206t &lt;0, sau \u0111\u00f3 nhi\u1ec7t \u0111\u01b0\u1ee3c thu th\u1eadp).<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">L\u01b0u \u00fd: Nhi\u1ec7t ri\u00eang bi\u1ec7t c\u1ee7a m\u1ed9t ch\u1ea5t \u0111\u1ec3 ch\u00fang ta bi\u1ebft nhi\u1ec7t c\u1ea7n thi\u1ebft \u0111\u1ec3 t\u1ea1o ra 1 kg ch\u1ea5t \u0111\u00f3 t\u0103ng l\u00ean 1 \u0111\u1ed9 C so v\u1edbi nhi\u1ec7t \u0111\u1ed9 ban \u0111\u1ea7u.<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Ap_dung_nhiet_trong_cuoc_song\"><\/span>\u00c1p d\u1ee5ng nhi\u1ec7t trong cu\u1ed9c s\u1ed1ng <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img decoding=\"async\" class=\"lazyload\" src=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https:\/\/vnmedia2.monkeyuni.net\/upload\/web\/img\/nhiet-nang-la-gi-5.jpg\" alt=\"N\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng ch\u1ee7 y\u1ebfu trong c\u00e1c thi\u1ebft b\u1ecb gia d\u1ee5ng. (\u1ea2nh: B\u1ed9 s\u01b0u t\u1eadp Internet)\" width=\"100%\"><\/p>\n<p dir=\"ltr\">R\u00f5 r\u00e0ng l\u00e0 trong cu\u1ed9c s\u1ed1ng, c\u00f3 nh\u1eefng lo\u1ea1i n\u0103ng l\u01b0\u1ee3ng \u0111\u1ec3 ph\u1ee5c v\u1ee5 m\u1ecdi ng\u01b0\u1eddi ch\u1ee7 y\u1ebfu nh\u01b0 \u0111i\u1ec7n, n\u0103ng l\u01b0\u1ee3ng quang h\u1ecdc, n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc, nhi\u1ec7t. Trong \u0111\u00f3 nhi\u1ec7t \u0111\u1eb7c bi\u1ec7t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c ng\u00e0nh s\u1ea3n xu\u1ea5t v\u00e0 c\u00e1c ho\u1ea1t \u0111\u1ed9ng h\u00e0ng ng\u00e0y. <\/p>\n<p dir=\"ltr\">M\u1ed9t v\u00e0i v\u00ed d\u1ee5 th\u1ef1c t\u1ebf li\u00ean quan \u0111\u1ebfn s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t: <\/p>\n<ul>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">Thi\u1ebft b\u1ecb gia \u0111\u00ecnh nh\u01b0 n\u1ed3i c\u01a1m \u0111i\u1ec7n, \u1ea5m si\u00eau t\u1ed1c \u0111\u1ed9 d\u00f9ng \u0111\u1ec3 n\u1ea5u g\u1ea1o v\u00e0 \u0111un s\u00f4i n\u01b0\u1edbc. \u0110\u00f3 l\u00e0 \u1ee9ng d\u1ee5ng c\u1ee7a n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t. <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">B\u1ebfp gas gi\u00fap n\u1ea5u \u0103n <\/p>\n<\/li>\n<li dir=\"ltr\">\n<p dir=\"ltr\" role=\"presentation\">M\u00e1y kh\u00f4 nh\u01b0 m\u00e1y s\u1ea5y gi\u00fap th\u1ee9c \u0103n kh\u00f4 &#8230;<\/p>\n<\/li>\n<\/ul>\n<p dir=\"ltr\">Trong c\u00e1c \u1ee9ng d\u1ee5ng nhi\u1ec7t tr\u00ean l\u00e0 t\u1ea5t c\u1ea3 s\u1ef1 chuy\u1ec3n h\u00f3a n\u0103ng l\u01b0\u1ee3ng. S\u1ef1 chuy\u1ec3n h\u00f3a n\u0103ng l\u01b0\u1ee3ng li\u00ean t\u1ee5c x\u1ea3y ra gi\u1eefa \u0111i\u1ec7n \u0111\u1ebfn n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc, c\u00f3 ch\u1ee9c n\u0103ng nhi\u1ec7t. Do \u0111\u00f3, ch\u00fang t\u00f4i th\u1ea5y c\u00e1c ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng kh\u00e1c nhau g\u1ea7n nhau. <\/p>\n<p dir=\"ltr\">Xem th\u00eam: Ki\u1ebfn th\u1ee9c c\u01a1 h\u1ecdc v\u1eadt l\u00fd 8 t\u1eeb AZ (ti\u1ec1m n\u0103ng, \u0111\u1ed9ng n\u0103ng, b\u1ea3o t\u1ed3n c\u01a1 h\u1ecdc)<\/p>\n<h2 dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Giai_cac_bai_tap_nhiet_vat_ly_8_Bai_21\"><\/span>Gi\u1ea3i c\u00e1c b\u00e0i t\u1eadp nhi\u1ec7t v\u1eadt l\u00fd 8 B\u00e0i 21 <span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p dir=\"ltr\">C\u00e2u 1: Khi \u0111\u1ec3 nhi\u1ec7t k\u1ebf v\u00e0o kh\u00f4ng kh\u00ed phun m\u1ea1nh t\u1eeb m\u1ed9t qu\u1ea3 b\u00f3ng, m\u1ef1c th\u1ee7y ng\u00e2n trong nhi\u1ec7t k\u1ebf t\u0103ng ho\u1eb7c gi\u1ea3m. T\u1ea1i sao?<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: M\u1ef1c th\u1ee7y ng\u00e2n trong nhi\u1ec7t k\u1ebf r\u01a1i v\u00ec kh\u00f4ng kh\u00ed phun m\u1ea1nh t\u1eeb b\u00f3ng \u0111\u1ec3 th\u1ef1c hi\u1ec7n kh\u00ed s\u1ebd \u0111\u1ea9y c\u00e1c ph\u00e2n t\u1eed kh\u00ed xung quanh nhi\u1ec7t k\u1ebf \u0111\u1ec3 v\u0103ng ra, l\u00e0m cho m\u1eadt \u0111\u1ed9 kh\u00f4ng kh\u00ed xung quanh nhi\u1ec7t k\u1ebf gi\u1ea3m, do \u0111\u00f3, t\u1ed5ng n\u0103ng l\u01b0\u1ee3ng c\u1ee7a c\u00e1c ph\u00e2n t\u1eed kh\u00ed s\u1ebd gi\u1ea3m. Qu\u00e1 tr\u00ecnh \u0111\u00f3 l\u00e0m gi\u1ea3m nhi\u1ec7t. <\/p>\n<p dir=\"ltr\">C\u00e2u 2: \u0110\u1eb7t m\u1ed9t gi\u1ecdt n\u01b0\u1edbc s\u00f4i v\u00e0o c\u1ed1c n\u01b0\u1edbc \u1ea5m, nhi\u1ec7t c\u1ee7a n\u01b0\u1edbc r\u01a1i v\u00e0 n\u01b0\u1edbc trong c\u1ed1c thay \u0111\u1ed5i nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: Nhi\u1ec7t c\u1ee7a n\u01b0\u1edbc gi\u1ea3m gi\u1ea3m, n\u01b0\u1edbc trong c\u1ed1c t\u0103ng l\u00ean.<\/p>\n<p dir=\"ltr\">C\u00e2u 3: Khi chuy\u1ec3n \u0111\u1ed9ng nhi\u1ec7t c\u1ee7a c\u00e1c ph\u00e2n t\u1eed t\u1ea1o n\u00ean v\u1eadt th\u1ec3 chuy\u1ec3n \u0111\u1ed9ng nhanh, s\u1ed1 l\u01b0\u1ee3ng c\u1ee7a v\u1eadt th\u1ec3 kh\u00f4ng t\u0103ng? <\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a v\u1eadt th\u1ec3 kh\u00f4ng t\u0103ng v\u00ec khi chuy\u1ec3n \u0111\u1ed9ng nhi\u1ec7t c\u1ee7a c\u00e1c ph\u00e2n t\u1eed l\u00e0m cho v\u1eadt th\u1ec3 nhanh ch\u00f3ng, nhi\u1ec7t \u0111\u1ed9, nhi\u1ec7t \u0111\u1ed9 v\u00e0 th\u1ec3 t\u00edch c\u1ee7a v\u1eadt t\u0103ng (th\u1ec3 t\u00edch t\u0103ng do kho\u1ea3ng c\u00e1ch c\u1ee7a c\u00e1c ph\u00e2n t\u1eed t\u0103ng). <\/p>\n<p dir=\"ltr\">C\u00e2u 4: G\u1ea1o n\u1ea5u ch\u00edn trong n\u1ed3i v\u00e0 ch\u00e0 g\u1ea1o \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng l\u00ean. H\u1ecfi v\u1ec1 s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9, \u0111i\u1ec1u g\u00ec l\u00e0 gi\u1ed1ng nhau, kh\u00e1c nhau trong hai hi\u1ec7n t\u01b0\u1ee3ng \u1edf tr\u00ean?<\/p>\n<p dir=\"ltr\">H\u1ed3i \u0111\u00e1p: <\/p>\n<p dir=\"ltr\">S\u1ef1 gi\u1ed1ng nhau: Nhi\u1ec7t t\u0103ng.<\/p>\n<p dir=\"ltr\">S\u1ef1 kh\u00e1c bi\u1ec7t: Khi n\u1ea5u nhi\u1ec7t t\u0103ng do truy\u1ec1n nhi\u1ec7t, khi c\u1ecd x\u00e1t t\u0103ng do nh\u1eadn.<\/p>\n<p dir=\"ltr\">C\u00e2u 5: \u1ede gi\u1eefa m\u1ed9t \u1ed1ng th\u1ee7y tinh k\u00edn, c\u00f3 m\u1ed9t gi\u1ecdt th\u1ee7y ng\u00e2n. M\u1ecdi ng\u01b0\u1eddi b\u1eadt l\u00ean \u1ed1ng nhi\u1ec1u l\u1ea7n. H\u1ecfi nhi\u1ec7t \u0111\u1ed9 c\u1ee7a gi\u1ea3m th\u1ee7y ng\u00e2n c\u00f3 t\u0103ng hay kh\u00f4ng? T\u1ea1i sao?<\/p>\n<p dir=\"ltr\">Tr\u1ea3 l\u1eddi: Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a th\u1ee7y ng\u00e2n gi\u1ea3m t\u0103ng v\u00ec khi ch\u00fang ta xoay ng\u01b0\u1ee3c \u1ed1ng nhi\u1ec1u l\u1ea7n ma s\u00e1t th\u1ee7y ng\u00e2n v\u1edbi k\u00ednh. \u0110\u00f3 l\u00e0 s\u1ef1 gia t\u0103ng nhi\u1ec7t do nh\u1eadn. <\/p>\n<p dir=\"ltr\">K\u1ebft lu\u1eadn <\/p>\n<p>B\u00e0i h\u1ecdc tr\u00ean \u0111\u00e3 gi\u00fap h\u1ecdc sinh c\u00f3 c\u00e1i nh\u00ecn r\u00f5 r\u00e0ng h\u01a1n v\u1ec1 b\u1ea3n ch\u1ea5t c\u1ee7a nhi\u1ec7t, hi\u1ec3u nhi\u1ec7t l\u00e0 g\u00ec v\u00e0 c\u00e1ch gi\u00fap \u0111\u1ed1i t\u01b0\u1ee3ng thay \u0111\u1ed5i nhi\u1ec7t. Tr\u00ean h\u1ebft, ch\u00fang t\u00f4i c\u0169ng nh\u1eadn ra s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a s\u1ee9c n\u00f3ng trong cu\u1ed9c s\u1ed1ng. Shining Home &#8211; Gia \u0111\u00ecnh Anh Ng\u1eef hy v\u1ecdng r\u1eb1ng b\u1ea1n \u0111\u00e3 \u0111\u01b0\u1ee3c tr\u1ea3 l\u1eddi ho\u00e0n to\u00e0n th\u00f4ng qua b\u00e0i vi\u1ebft n\u00e0y, nhanh ch\u00f3ng l\u00e0m theo danh m\u1ee5c ki\u1ebfn \u200b\u200bth\u1ee9c c\u01a1 b\u1ea3n t\u1eeb kh\u1ec9 \u0111\u1ec3 c\u1eadp nh\u1eadt ki\u1ebfn \u200b\u200bth\u1ee9c h\u1eefu \u00edch h\u01a1n.<\/p>\n<p>Ngu\u1ed3n: <a href=\"http:\/\/www.ckconitsha.com\/vn\/\">http:\/\/www.ckconitsha.com\/vn\/<\/a> T\u00e1c gi\u1ea3: <a href=\"https:\/\/www.ckconitsha.com\/vn\/author\/nguyenlandung\">Nguy\u1ec5n L\u00e2n d\u0169ng<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Theo ch\u01b0\u01a1ng tr\u00ecnh V\u1eadt l\u00fd 8, ch\u00fang ta \u0111\u00e3 h\u1ecdc \u0111\u01b0\u1ee3c ch\u1ee9c n\u0103ng l\u00e0 g\u00ec? N\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc c\u00f3 li\u00ean quan \u0111\u1ebfn t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn \u0111\u1ed1i t\u01b0\u1ee3ng. Ngo\u00e0i \u0111\u1ea7u ra, c\u00f2n c\u00f3 m\u1ed9t thu\u1eadt ng\u1eef li\u00ean quan \u0111\u1ebfn nhi\u1ec7t ho\u1eb7c nhi\u1ec7t \u0111\u1ed9 l\u00e0 n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t. \u0110\u00e2y l\u00e0 m\u1ed9t ph\u1ea7n th\u00fa v\u1ecb c\u1ee7a ki\u1ebfn&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[100],"tags":[],"class_list":["post-20526","post","type-post","status-publish","format-standard","hentry","category-kien-thuc"],"_links":{"self":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/20526","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/comments?post=20526"}],"version-history":[{"count":2,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/20526\/revisions"}],"predecessor-version":[{"id":25342,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/posts\/20526\/revisions\/25342"}],"wp:attachment":[{"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/media?parent=20526"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/categories?post=20526"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ckconitsha.com\/vn\/wp-json\/wp\/v2\/tags?post=20526"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}