\u0110\u00ea\u0300 thi gi\u01b0\u0303a ho\u0323c ki\u0300 1 m\u00f4n Ly\u0301 l\u01a1\u0301p 12 \u2013 THPT Nh\u00e2n Chi\u0301nh 2016 m\u00e3\u00a0\u0111\u1ec1 485<\/strong><\/h4>\nC\u00e2u 4:<\/strong> M\u1ed9t con l\u1eafc l\u00f2 xo \u0111\u1eb7t tr\u00ean m\u1eb7t ph\u1eb3ng n\u1eb1m ngang g\u1ed3m l\u00f2 xo nh\u1eb9 c\u00f3 m\u1ed9t \u0111\u1ea7u c\u1ed1 \u0111\u1ecbnh, \u0111\u1ea7u kia g\u1eafn v\u1edbi v\u1eadt nh\u1ecf m1<\/sub>. Ban \u0111\u1ea7u gi\u1eef v\u1eadt m1<\/sub> t\u1ea1i v\u1ecb tr\u00ed m\u00e0 l\u00f2 xo b\u1ecb n\u00e9n 9cm, \u0111\u1eb7t v\u1eadt nh\u1ecf m2<\/sub> (c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng b\u1eb1ng kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt m1<\/sub>) tr\u00ean m\u1eb7t ph\u1eb3ng n\u1eb1m ngang v\u00e0 s\u00e1t v\u1edbi v\u1eadt m1<\/sub>. Bu\u00f4ng nh\u1eb9 \u0111\u1ec3 hai v\u1eadt b\u1eaft \u0111\u1ea7u chuy\u1ec3n \u0111\u1ed9ng theo ph\u01b0\u01a1ng c\u1ee7a tr\u1ee5c l\u00f2 xo. B\u1ecf qua m\u1ecdi ma s\u00e1t. \u1ede th\u1eddi \u0111i\u1ec3m l\u00f2 xo c\u00f3 chi\u1ec1u d\u00e0i c\u1ef1c \u0111\u1ea1i l\u1ea7n \u0111\u1ea7u ti\u00ean, kho\u1ea3ng c\u00e1ch gi\u1eefa hai v\u1eadt m1<\/sub> v\u00e0 m2\u00a0 <\/sub>c\u00f3 gi\u00e1 tr\u1ecb g\u1ea7n gi\u00e1 tr\u1ecb n\u00e0o nh\u1ea5t<\/strong> sau \u0111\u00e2y?<\/p>\nA. <\/strong>3cm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. <\/strong>9cm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. <\/strong>4 cm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D. <\/strong>18cm<\/p>\nC\u00e2u 13:<\/strong> L\u1ef1c k\u00e9o v\u1ec1 kh\u00f4ng<\/strong> c\u00f3 t\u00ednh ch\u1ea5t n\u00e0o sau \u0111\u00e2y?<\/p>\nA. <\/strong>Lu\u00f4n \u0111\u1ed5i chi\u1ec1u khi v\u1eadt qua v\u1ecb tr\u00ed c\u00e2n b\u1eb1ng<\/p>\nB. <\/strong>C\u00f3 gi\u00e1 tr\u1ecb c\u1ef1c \u0111\u1ea1i khi v\u1eadt \u0111i qua v\u1ecb tr\u00ed c\u00e2n b\u1eb1ng<\/p>\nC. <\/strong>Lu\u00f4n h\u01b0\u1edbng v\u1ec1 v\u1ecb tr\u00ed c\u00e2n b\u1eb1ng.<\/p>\nD. <\/strong>Bi\u1ebfn thi\u00ean \u0111i\u1ec1u ho\u00e0 c\u00f9ng t\u1ea7n s\u1ed1 v\u1edbi t\u1ea7n s\u1ed1 ri\u00eang c\u1ee7a h\u1ec7.<\/p>\nC\u00e2u 14:<\/strong> M\u1ed9t l\u00f2 xo c\u00f3 chi\u1ec1u d\u00e0i t\u1ef1 nhi\u00ean 30cm, \u0111\u01b0\u1ee3c treo th\u1eb3ng \u0111\u1ee9ng, \u0111\u1ea7u d\u01b0\u1edbi c\u1ee7a l\u00f2 xo c\u00f3 treo v\u1eadt n\u1eb7ng m. Khi v\u1eadt c\u00e2n b\u1eb1ng, l\u00f2 xo d\u00e3n 6cm. K\u00edch th\u00edch cho con l\u1eafc dao \u0111\u1ed9ng \u0111i\u1ec1u h\u00f2a v\u1edbi bi\u00ean \u0111\u1ed9 5cm. Chi\u1ec1u d\u00e0i c\u1ef1c \u0111\u1ea1i c\u1ee7a l\u00f2 xo trong qu\u00e1 tr\u00ecnh dao \u0111\u1ed9ng l\u00e0<\/p>\nA. <\/strong>41cm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 B. <\/strong>35cm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 C. <\/strong>31cm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 D. <\/strong>29cm<\/p>\n![\"De](\"http:\/\/images.tuyensinh247.com\/picture\/2016\/1016\/li-12-nhan-chinh-1.png\")
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![\"De](\"http:\/\/images.tuyensinh247.com\/picture\/2016\/1016\/li-12-nhan-chinh-2.png\")
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![\"De](\"http:\/\/images.tuyensinh247.com\/picture\/2016\/1016\/li-12-nhan-chinh-3.png\")
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Theo Tuyensinh247<\/strong><\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":"
\u0110\u1ec1 thi gi\u1eefa h\u1ecdc k\u00ec 1 l\u1edbp 12 m\u00f4n V\u1eadt L\u00fd c\u1ee7a tr\u01b0\u1eddng THPT Nh\u00e2n Ch\u00ednh n\u0103m 2016 \u0111\u00e3 \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt chi ti\u1ebft t\u1ea1i \u0111\u00e2y: \u0110\u00ea\u0300 thi gi\u01b0\u0303a ho\u0323c ki\u0300 1 m\u00f4n Ly\u0301 l\u01a1\u0301p 12 \u2013 THPT Nh\u00e2n Chi\u0301nh 2016 m\u00e3\u00a0\u0111\u1ec1 485 C\u00e2u 4: M\u1ed9t con l\u1eafc l\u00f2 xo \u0111\u1eb7t tr\u00ean m\u1eb7t ph\u1eb3ng n\u1eb1m […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[167],"tags":[],"yoast_head":"\n
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