{"id":2935,"date":"2021-10-15T20:39:15","date_gmt":"2021-10-15T13:39:15","guid":{"rendered":"https:\/\/www.vietlearn.org\/post\/?p=2935"},"modified":"2021-10-22T18:08:48","modified_gmt":"2021-10-22T11:08:48","slug":"khoi-luong-tinh-la-gi-dinh-nghia-khoi-luong-tinh","status":"publish","type":"post","link":"https:\/\/www.vietlearn.org\/kien-thuc\/khoi-luong-tinh-la-gi-dinh-nghia-khoi-luong-tinh\/","title":{"rendered":"Kh\u1ed1i L\u01b0\u1ee3ng T\u1ecbnh L\u00e0 G\u00ec? \u2013 \u0110\u1ecbnh Ngh\u0129a Kh\u1ed1i L\u01b0\u1ee3ng T\u1ecbnh"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Khi b\u1ea1n mua m\u1ed9t h\u1ed9p s\u1eefa, th\u1ea5y ch\u00e2n h\u1ed9p tr\u00ean bao b\u00ec c\u00f3 in d\u00f2ng ch\u1eef: kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh: 500g. B\u1ea1n c\u00f3 bi\u1ebft kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh tr\u00ean bao b\u00ec l\u00e0 g\u00ec kh\u00f4ng? Hi\u1ec7n nay, nhi\u1ec1u ng\u01b0\u1eddi v\u1eabn c\u00f2n nh\u1ea7m l\u1eabn gi\u1eefa kh\u00e1i ni\u1ec7m kh\u1ed1i l\u01b0\u1ee3ng l\u00e0 g\u00ec v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh l\u00e0 g\u00ec? Ho\u1eb7c nh\u1ea7m l\u1eabn 2 kh\u00e1i ni\u1ec7m, t\u00ean g\u1ecdi n\u00e0y l\u00e0 m\u1ed9t. V\u1eady kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh l\u00e0 g\u00ec? B\u00e0i vi\u1ebft n\u00e0y, ch\u00fang t\u00f4i s\u1ebd n\u00eau ra kh\u00e1i ni\u1ec7m ch\u00ednh x\u00e1c c\u1ee7a kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh l\u00e0 g\u00ec?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u01b0u \u00fd: Khi n\u00f3i v\u1ec1 tr\u1ecdng l\u01b0\u1ee3ng t\u1ecbnh tr\u00ean bao b\u00ec c\u1ee7a m\u1ed9t v\u1eadt t\u00ednh b\u1eb1ng kilogram ( ho\u1eb7c gam) \u0111\u00f3 ch\u00ednh l\u00e0 gi\u00e1 tr\u1ecb kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh c\u1ee7a v\u1eadt \u0111\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ed d\u1ee5: Khi b\u1ea1n mua m\u1ed9t g\u00f3i ph\u1edf, th\u1ea5y tr\u00ean bao b\u00ec c\u00f3 in: Net weight \u2013 Kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh:120g. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 t\u1ed5ng kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a c\u00e1c nguy\u00ean li\u1ec7u b\u00ean trong bao g\u1ed3m c\u1ea3 d\u1ea7u, mu\u1ed1i,\u2026 l\u00e0 120g. Kh\u00f4ng t\u00ednh kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a bao b\u00ec. T\u01b0\u01a1ng t\u1ef1 v\u1edbi c\u00e1c nguy\u00ean li\u1ec7u d\u1ea1ng l\u1ecfng, tr\u00ean bao b\u00ec in th\u1ec3 t\u00edch th\u1ef1c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh th\u01b0\u1eddng th\u1ea5y \u1edf \u0111\u00e2u \u2013 \u00dd ngh\u0129a c\u1ee7a kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u00e0 s\u1ea3n xu\u1ea5t th\u01b0\u1eddng in kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh b\u00ean g\u00f3c d\u01b0\u1edbi c\u1ee7a c\u00e1c bao b\u00ec s\u1ea3n ph\u1ea9m.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh tr\u00ean bao b\u00ec th\u1ec3 hi\u1ec7n m\u1ee9c \u0111\u1ed9 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a v\u1eadt. Gi\u00fap nh\u00e0 s\u1ea3n xu\u1ea5t c\u0169ng nh\u01b0 ng\u01b0\u1eddi ti\u00eau d\u00f9ng d\u1ec5 ph\u00e2n lo\u1ea1i c\u1ee7a s\u1ea3n ph\u1ea9m. T\u1eeb \u0111\u00f3, ng\u01b0\u1eddi ti\u00eau d\u00f9ng c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng \u0111\u01b0a ra nh\u1eefng l\u1ef1a ch\u1ecdn s\u1eed d\u1ee5ng tu\u1ef3 theo nhu c\u1ea7u c\u00e1 nh\u00e2n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t, nh\u1eadp kh\u1ea9u bu\u00f4n b\u00e1n h\u00e0ng c\u00f3 \u0111\u00f3ng g\u00f3i bao b\u00ec ph\u1ea3i tu\u00e2n theo quy \u0111\u1ecbnh s\u1ed1 21\/2014 v\u1ec1 \u0111o l\u01b0\u1eddng \u0111\u1ed1i v\u1edbi s\u1ea3n ph\u1ea9m \u0111\u00f3ng g\u00f3i s\u1eb5n c\u1ee7a B\u1ed9 khoa h\u1ecdc v\u00e0 c\u00f4ng ngh\u1ec7. C\u00f3 Chi c\u1ee5c ti\u00eau chu\u1ea9n \u0111o l\u01b0\u1eddng ch\u1ea5t l\u01b0\u1ee3ng gi\u00e1m s\u00e1t.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng c\u01a1 s\u1edf tu\u00e2n theo c\u00e1c quy \u0111\u1ecbnh s\u1ebd \u0111\u01b0\u1ee3c ch\u1ee9ng nh\u1eadn s\u1eed d\u1ee5ng d\u1ea5u \u0111\u1ecbnh l\u01b0\u1ee3ng. Tr\u01b0\u1eddng h\u1ee3p c\u00e1c c\u01a1 s\u1edf vi ph\u1ea1m s\u1ebd b\u1ecb \u0111\u00ecnh ch\u1ec9 ho\u1eb7c hu\u1ef7 b\u1ecf hi\u1ec7u l\u1ef1c ch\u1ee9ng nh\u1eadn.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng t\u1ecbnh kh\u00e1c nhau nh\u01b0 th\u1ebf n\u00e0o?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y c\u0169ng t\u01b0\u01a1ng t\u1ef1 nh\u01b0 c\u00e2u h\u1ecfi kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng kh\u00e1c nhau th\u1ebf n\u00e0o. C\u00f3 nhi\u1ec1u ng\u01b0\u1eddi v\u1eabn c\u00f2n nh\u1ea7m l\u1eabn gi\u1eefa kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u1ed1i l\u01b0\u1ee3ng kh\u00e1c tr\u1ecdng l\u01b0\u1ee3ng trong v\u1eadt l\u00ed. Kh\u1ed1i l\u01b0\u1ee3ng d\u00f9ng \u0111\u1ec3 \u0111\u1ecbnh d\u1ea1ng s\u1ed1 l\u01b0\u1ee3ng v\u1eadt ch\u1ea5t c\u1ee7a m\u1ed9t v\u1eadt. Trong khi \u0111\u00f3 tr\u1ecdng l\u01b0\u1ee3ng l\u1ea1i th\u1ec3 hi\u1ec7n c\u01b0\u1eddng \u0111\u1ed9 t\u00e1c d\u1ee5ng c\u1ee7a tr\u1ecdng l\u1ef1c l\u00ean m\u1ed9t v\u1eadt. Hay c\u00f3 th\u1ec3 hi\u1ec3u m\u1ed9t c\u00e1ch \u0111\u01a1n gi\u1ea3n l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 m\u1ed9t l\u1ef1c ( \u0111\u01a1n v\u1ecb \u0111o b\u1eb1ng Niuton, k\u00ed hi\u1ec7u l\u00e0 N). C\u00f2n kh\u1ed1i l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng \u0111\u01a1n v\u1ecb l\u00e0 kilogam (kg) ho\u1eb7c gam (g).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t v\u1eadt kh\u00f4ng \u0111\u1ed5i. C\u00f2n tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t v\u1eadt thay \u0111\u1ed5i tu\u1ef3 theo m\u1ee9c \u0111\u1ed9 c\u1ee7a tr\u1ecdng l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng th\u1ee9c t\u00ednh tr\u1ecdng l\u01b0\u1ee3ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P = mg (\u0111\u01a1n v\u1ecb l\u00e0 Niuton)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Trong \u0111\u00f3:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">P l\u00e0 tr\u1ecdng l\u01b0\u1ee3ng<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">m l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a v\u1eadt<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">g l\u00e0 gia t\u1ed1c = 9,81m\/s\u00b2<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1edbi c\u00f4ng th\u1ee9c tr\u00ean, khi \u0111\u1ed5i \u0111\u01a1n v\u1ecb c\u1ee7a tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 Niuton sang kg ch\u00ednh l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng. Do \u0111\u00f3, khi n\u00f3i v\u1ec1 tr\u1ecdng l\u01b0\u1ee3ng t\u1ecbnh tr\u00ean bao b\u00ec c\u1ee7a m\u1ed9t v\u1eadt t\u00ednh b\u1eb1ng kilogram ( ho\u1eb7c gam) \u0111\u00f3 ch\u00ednh l\u00e0 gi\u00e1 tr\u1ecb kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh c\u1ee7a v\u1eadt \u0111\u00f3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tr\u00ean \u0111\u00e2y Vietlearn.org \u0111\u00e3 gi\u1ea3i th\u00edch v\u1ec1 kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh, \u0111\u1ecbnh ngh\u0129a kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh l\u00e0 g\u00ec? Hi v\u1ecdng b\u00e0i vi\u1ebft n\u00e0y s\u1ebd h\u1eefu \u00edch v\u00e0 g\u00f3p ph\u1ea7n n\u00e2ng cao m\u1ee9c \u0111\u1ed9 hi\u1ec3u bi\u1ebft c\u1ee7a m\u1ecdi ng\u01b0\u1eddi.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n\n\n\n","protected":false},"excerpt":{"rendered":"<p>Ghi ch\u00fa: T\u00e0i li\u1ec7u tr\u00edch d\u1eabn Khi b\u1ea1n mua m\u1ed9t h\u1ed9p s\u1eefa, th\u1ea5y ch\u00e2n h\u1ed9p tr\u00ean bao b\u00ec c\u00f3 in d\u00f2ng ch\u1eef: kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh: 500g. B\u1ea1n c\u00f3 bi\u1ebft kh\u1ed1i l\u01b0\u1ee3ng t\u1ecbnh tr\u00ean bao b\u00ec l\u00e0 g\u00ec kh\u00f4ng? Hi\u1ec7n nay, nhi\u1ec1u ng\u01b0\u1eddi v\u1eabn c\u00f2n nh\u1ea7m l\u1eabn gi\u1eefa kh\u00e1i ni\u1ec7m kh\u1ed1i l\u01b0\u1ee3ng l\u00e0 g\u00ec v\u00e0 kh\u1ed1i [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[7],"tags":[],"class_list":["post-2935","post","type-post","status-publish","format-standard","hentry","category-vat-ly"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2935","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=2935"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/2935\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=2935"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=2935"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=2935"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}