{"segment":[{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"GH\u0110 c\u1ee7a c\u00e2n R\u00f4 b\u00e9c van l\u00e0:","select":["A. kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t qu\u1ea3 c\u00e2n nh\u1ecf nh\u1ea5t c\u00f3 trong h\u1ed9p","B. kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t qu\u1ea3 c\u00e2n l\u1edbn nh\u1ea5t c\u00f3 trong h\u1ed9p","C. t\u1ed5ng kh\u1ed1i l\u01b0\u1ee3ng c\u00e1c qu\u1ea3 c\u00e2n c\u00f3 trong h\u1ed9p","D. t\u1ed5ng kh\u1ed1i l\u01b0\u1ee3ng c\u00e1c qu\u1ea3 c\u00e2n l\u1edbn nh\u1ea5t c\u00f3 trong h\u1ed9p"],"hint":"","explain":"<span class='basic_left'>GH\u0110 c\u1ee7a c\u00e2n R\u00f4 b\u00e9c van l\u00e0 t\u1ed5ng kh\u1ed1i l\u01b0\u1ee3ng c\u00e1c qu\u1ea3 c\u00e2n c\u00f3 trong h\u1ed9p.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2321},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"\u0110\u1ec3 \u0111o kh\u1ed1i l\u01b0\u1ee3ng ng\u01b0\u1eddi ta d\u00f9ng d\u1ee5ng c\u1ee5 g\u00ec?","select":["A. Th\u01b0\u1edbc","B. B\u00ecnh chia \u0111\u1ed9","C. C\u00e2n","D. Ca \u0111ong"],"hint":"","explain":"<span class='basic_left'>\u0110\u1ec3 \u0111o kh\u1ed1i l\u01b0\u1ee3ng ng\u01b0\u1eddi ta d\u00f9ng d\u1ee5ng c\u1ee5 l\u00e0 c\u00e2n.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2322},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":10,"ques":"Tr\u00ean v\u1ecf m\u1ed9t h\u1ed9p th\u1ecbt c\u00f3 ghi 500g. S\u1ed1 li\u1ec7u \u0111\u00f3 ch\u1ec9:","select":["A. th\u1ec3 t\u00edch c\u1ee7a c\u1ea3 h\u1ed9p th\u1ecbt","B. th\u1ec3 t\u00edch c\u1ee7a th\u1ecbt trong h\u1ed9p","C. kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a c\u1ea3 h\u1ed9p th\u1ecbt","D. kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a th\u1ecbt trong h\u1ed9p"],"hint":"","explain":"<span class='basic_left'>Tr\u00ean v\u1ecf m\u1ed9t h\u1ed9p th\u1ecbt c\u00f3 ghi 500g. S\u1ed1 li\u1ec7u \u0111\u00f3 ch\u1ec9 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a th\u1ecbt trong h\u1ed9p.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2323},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":10,"ques":"M\u1ed9t \u00f4 t\u00f4 c\u00f3 tr\u1ecdng t\u1ea3i l\u00e0 5 t\u1ea5n th\u00ec t\u01b0\u01a1ng \u1ee9ng v\u1edbi tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 bao nhi\u00eau?","select":["A. $5 N$","B. $500 N$","C. $5\\,000 N$","D. $50\\,000 N$"],"hint":"C\u00f4ng th\u1ee9c t\u00ednh tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt l\u00e0: $P=10m$ (N) ($m$ l\u00e0 kh\u1ed1i l\u01b0\u1ee3ng v\u1eadt, \u0111\u01a1n v\u1ecb: kg)","explain":"<span class='basic_left'>Tr\u1ecdng l\u01b0\u1ee3ng \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a l\u00e0 gi\u00e1 tr\u1ecb c\u1ee7a tr\u1ecdng l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean v\u1eadt.<br\/> Do v\u1eady, \u00f4 t\u00f4 c\u00f3 tr\u1ecdng t\u1ea3i l\u00e0 $5$ t\u1ea5n th\u00ec t\u01b0\u01a1ng \u1ee9ng v\u1edbi tr\u1ecdng l\u01b0\u1ee3ng l\u00e0 $50\\,000 N$<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2324},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":10,"ques":"M\u1ed9t l\u01b0\u1ee3ng v\u00e0ng c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng l\u00e0: ","select":["A. $37,5$ g","B. $0,375$ l\u1ea1ng","C. $37500$ mg","D. $0,0375$ hg"],"hint":"","explain":"<span class='basic_left'>M\u1ed9t l\u01b0\u1ee3ng v\u00e0ng c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng l\u00e0: 37,5g. <br\/>M\u1ed9t l\u01b0\u1ee3ng v\u00e0ng b\u1eb1ng 10 ch\u1ec9 v\u00e0ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2325},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":10,"ques":"1 y\u1ebfn b\u1eb1ng: ","select":["A. 100 miligam","B. 10 h\u00e9c-t\u00f4-gam","C. 1000 gam","D. 10 kil\u00f4gam"],"hint":"","explain":"<span class='basic_left'>1 y\u1ebfn b\u1eb1ng 10 kg.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2326},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"Tr\u00ean c\u1eeda c\u00e1c \u00f4t\u00f4 v\u1eadn t\u1ea3i ta th\u01b0\u1eddng th\u1ea5y c\u00e1c k\u00ed hi\u1ec7u 1T ; 1,5T ; 2T ; 5T... K\u00ed hi\u1ec7u \u0111\u00f3 cho bi\u1ebft:","select":["A. Tr\u1ecdng l\u01b0\u1ee3ng t\u1ed1i \u0111a m\u00e0 xe c\u00f3 th\u1ec3 ch\u1edf \u0111\u01b0\u1ee3c","B. Kh\u1ed1i l\u01b0\u1ee3ng t\u1ed1i \u0111a m\u00e0 xe t\u1ea3i c\u1ea7n ph\u1ea3i ch\u1edf \u0111\u1ec3 xe ch\u1ea1y \u00eam, kh\u00f4ng b\u1ecb x\u00f3c","C. Kh\u1ed1i l\u01b0\u1ee3ng t\u1ed1i \u0111a m\u00e0 xe t\u1ea3i c\u00f3 th\u1ec3 ch\u1edf \u0111\u01b0\u1ee3c","D. Th\u1ec3 t\u00edch t\u1ed1i \u0111a m\u00e0 xe t\u1ea3i c\u00f3 th\u1ec3 ch\u1edf \u0111\u01b0\u1ee3c "],"hint":"","explain":"<span class='basic_left'>Tr\u00ean c\u1eeda c\u00e1c \u00f4t\u00f4 v\u1eadn t\u1ea3i, ta th\u01b0\u1eddng th\u1ea5y c\u00e1c k\u00ed hi\u1ec7u 1T ; 1,5T ; 2T ; 5T...<br\/> K\u00ed hi\u1ec7u \u0111\u00f3 cho bi\u1ebft kh\u1ed1i l\u01b0\u1ee3ng t\u1ed1i \u0111a m\u00e0 xe t\u1ea3i c\u00f3 th\u1ec3 ch\u1edf \u0111\u01b0\u1ee3c.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2327},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":10,"ques":"","select":["A. M\u1ed9t kil\u00f4gam b\u00f4ng c\u00f3 th\u1ec3 t\u00edch b\u1eb1ng m\u1ed9t kil\u00f4gam s\u1eaft ","B. M\u1ed9t kil\u00f4gam b\u00f4ng c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng b\u1eb1ng m\u1ed9t kil\u00f4gam s\u1eaft","C. M\u1ed9t kil\u00f4gam b\u00f4ng c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng b\u1eb1ng m\u1ed9t kil\u00f4gam s\u1eaft","D. C\u1ea3 B v\u00e0 C \u0111\u1ec1u \u0111\u00fang"],"hint":"","explain":"<span class='basic_left'>M\u1ed9t kil\u00f4gam b\u00f4ng c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng b\u1eb1ng m\u1ed9t kil\u00f4gam s\u1eaft.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2328},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":10,"ques":"M\u1ed9t c\u00e1i c\u00e2n c\u00e2n ch\u00ednh x\u00e1c t\u1edbi 0,1g. K\u1ebft qu\u1ea3 n\u00e0o sau \u0111\u00e2y ch\u1ec9 \u0111\u00fang khi s\u1eed d\u1ee5ng chi\u1ebfc c\u00e2n \u0111\u00f3 \u0111\u1ec3 th\u1ef1c h\u00e0nh \u0111o kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t v\u1eadt n\u1eb7ng:","select":["A. m = 12,41g","B. m = 12,40g","C. m = 12,04g","D. m = 12,2g"],"hint":"","explain":"<span class='basic_left'>V\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c l\u00e0 0,1g n\u00ean c\u1ea7n ghi m\u1ed9t ch\u1eef s\u1ed1 sau d\u1ea5u ph\u1ea9y.<br\/> V\u1eady k\u1ebft qu\u1ea3 l\u00e0 12,2g. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2329},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":10,"ques":"\u0110\u1ec3 chia 5 kg \u0111\u01b0\u1eddng th\u00e0nh 5 t\u00fai gi\u1ed1ng nhau b\u1eb1ng c\u00e2n R\u00f4becvan v\u1edbi c\u00e1c qu\u1ea3 c\u00e2n 500g, 2kg, 1kg v\u00e0 50g. Khi \u0111\u00f3 ta c\u1ea7n:","select":["A. \u00cdt nh\u1ea5t 3 l\u1ea7n c\u00e2n","B. \u00cdt nh\u1ea5t 2 l\u1ea7n c\u00e2n","C. \u00cdt nh\u1ea5t 4 l\u1ea7n c\u00e2n","D. \u00cdt nh\u1ea5t 5 l\u1ea7n c\u00e2n"],"hint":"","explain":"<span class='basic_left'>Th\u1ef1c hi\u1ec7n 4 l\u1ea7n c\u00e2n v\u1edbi qu\u1ea3 c\u00e2n 1kg ta \u0111\u01b0\u1ee3c 4 t\u00fai m\u1ed7i t\u00fai l\u00e0 1kg, v\u00e0 c\u1ea3 ph\u1ea7n c\u00f2n l\u1ea1i c\u1ee7a t\u00fai \u0111\u01b0\u1eddng ban \u0111\u1ea7u n\u1eefa l\u00e0 ta \u0111\u01b0\u1ee3c 5 t\u00fai m\u1ed7i t\u00fai 1kg.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2330}],"lesson":{"save":0,"level":2}}