{"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":"M\u1ed9t chi\u1ebfc t\u00e0u n\u1ed5i tr\u00ean m\u1eb7t n\u01b0\u1edbc l\u00e0 do:","select":["A. Chi\u1ebfc t\u00e0u qu\u00e1 nh\u1eb9, kh\u00f4ng th\u1ec3 ch\u00ecm xu\u1ed1ng n\u01b0\u1edbc \u0111\u01b0\u1ee3c","B. Chi\u1ebfc t\u00e0u qu\u00e1 to kh\u00f4ng th\u1ec3 ch\u00ecm xu\u1ed1ng n\u01b0\u1edbc \u0111\u01b0\u1ee3c","C. L\u1ef1c \u0111\u1ea9y c\u1ee7a n\u01b0\u1edbc v\u00e0 tr\u1ecdng l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean t\u00e0u c\u00e2n b\u1eb1ng nhau","D. C\u1ea3 3 c\u00e2u tr\u00ean \u0111\u1ec1u sai"],"hint":"","explain":"<span class='basic_left'> Chi\u1ebfc t\u00e0u n\u1ed5i tr\u00ean m\u1eb7t n\u01b0\u1edbc l\u00e0 do l\u1ef1c \u0111\u1ea9y c\u1ee7a n\u01b0\u1edbc v\u00e0 tr\u1ecdng l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean t\u00e0u c\u00e2n b\u1eb1ng nhau.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2351},{"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":"\u0110\u1ec3 x\u00e1c \u0111\u1ecbnh m\u1ed9t l\u1ef1c ta c\u1ea7n bi\u1ebft","select":["A. Gi\u00e1 tr\u1ecb c\u1ee7a l\u1ef1c ","B. Ph\u01b0\u01a1ng t\u00e1c d\u1ee5ng c\u1ee7a l\u1ef1c, v\u00e0 \u0111i\u1ec3m \u0111\u1eb7t c\u1ee7a l\u1ef1c","C. Chi\u1ec1u t\u00e1c d\u1ee5ng c\u1ee7a l\u1ef1c","D. K\u1ebft h\u1ee3p c\u1ea3 3 c\u00e2u tr\u00ean"],"hint":"","explain":"<span class='basic_left'>\u0110\u1ec3 x\u00e1c \u0111\u1ecbnh m\u1ed9t l\u1ef1c ta c\u1ea7n bi\u1ebft gi\u00e1 tr\u1ecb(su\u1ea5t \u0111o) c\u1ee7a l\u1ef1c, ph\u01b0\u01a1ng t\u00e1c d\u1ee5ng c\u1ee7a l\u1ef1c, v\u00e0 \u0111i\u1ec3m \u0111\u1eb7t c\u1ee7a l\u1ef1c, chi\u1ec1u t\u00e1c d\u1ee5ng c\u1ee7a l\u1ef1c<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2352},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":"Th\u1ea3 m\u1ed9t th\u00f9ng phuy t\u1eeb \u0111\u1ec9nh m\u1ed9t con d\u1ed1c ta th\u1ea5y th\u00f9ng phuy l\u0103n \u0111\u01b0\u1ee3c xu\u1ed1ng ch\u00e2n d\u1ed1c. Chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a n\u00f3 l\u00e0 nh\u1edd t\u00e1c d\u1ee5ng c\u1ee7a: ","select":["A. Ph\u1ea3n l\u1ef1c c\u1ee7a m\u1eb7t d\u1ed1c t\u00e1c d\u1ee5ng l\u00ean th\u00f9ng phuy","B. Tr\u1ecdng l\u1ef1c ","C. L\u1ef1c ma s\u00e1t gi\u1eefa th\u00f9ng phuy v\u1edbi m\u1eb7t d\u1ed1c","D. S\u1ee9c \u0111\u1ea9y c\u1ee7a gi\u00f3"],"hint":"","explain":"<span class='basic_left'>Chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a n\u00f3 l\u00e0 nh\u1edd t\u00e1c d\u1ee5ng c\u1ee7a tr\u1ecdng l\u1ef1c.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2353},{"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":"Khi s\u1eed d\u1ee5ng l\u1ef1c k\u1ebf \u0111\u1ec3 \u0111o tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t v\u1eadt, k\u1ebft qu\u1ea3 thu \u0111\u01b0\u1ee3c 6,2N. L\u1ef1c k\u1ebf \u0111\u00f3 c\u00f3 \u0110\u1ed9 chia nh\u1ecf nh\u1ea5t (\u0110CNN) l\u00e0:","select":["A. 0,2N","B. 0,1N","C. 0,02N","D. 0,01N"],"hint":"","explain":"<span class='basic_left'>L\u1ef1c k\u1ebf \u0111\u00f3 c\u00f3 \u0110\u1ed9 chia nh\u1ecf nh\u1ea5t (\u0110CNN) l\u00e0: 0.2N.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2354},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":"M\u1ed9t v\u1eadt chuy\u1ec3n \u0111\u1ed9ng tr\u00ean \u0111\u01b0\u1eddng th\u1eb3ng. Khi \u0111\u00f3:","select":["A. Tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt lu\u00f4n thay \u0111\u1ed5i.","B. Tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt kh\u00f4ng thay \u0111\u1ed5i.","C. Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a v\u1eadt lu\u00f4n thay \u0111\u1ed5i.","D. Kh\u1ed1i l\u01b0\u1ee3ng v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng thay \u0111\u1ed5i."],"hint":"","explain":"<span class='basic_left'>M\u1ed9t v\u1eadt chuy\u1ec3n \u0111\u1ed9ng tr\u00ean \u0111\u01b0\u1eddng th\u1eb3ng. Khi \u0111\u00f3 tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a v\u1eadt kh\u00f4ng thay \u0111\u1ed5i.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2355},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":"Khi c\u00e2n m\u1ed9t t\u00fai \u0111\u01b0\u1eddng b\u1eb1ng m\u1ed9t c\u00e2n \u0111\u1ed3ng h\u1ed3.","select":["A. C\u00e2n ch\u1ec9 tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a t\u00fai \u0111\u01b0\u1eddng.","B. C\u00e2n ch\u1ec9 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a t\u00fai \u0111\u01b0\u1eddng.","C. Tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a t\u00fai \u0111\u01b0\u1eddng l\u00e0m quay kim c\u1ee7a c\u00e2n.","D. Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a t\u00fai \u0111\u01b0\u1eddng l\u00e0m quay kim c\u1ee7a c\u00e2n."],"hint":"","explain":"<span class='basic_left'>Khi c\u00e2n m\u1ed9t t\u00fai \u0111\u01b0\u1eddng b\u1eb1ng m\u1ed9t c\u00e2n \u0111\u1ed3ng h\u1ed3, c\u00e2n ch\u1ec9 kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a t\u00fai \u0111\u01b0\u1eddng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2356},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":10,"ques":"S\u1ed1 li\u1ec7u n\u00e0o d\u01b0\u1edbi \u0111\u00e2y ph\u00f9 h\u1ee3p v\u1edbi m\u1ed9t h\u1ecdc sinh THCS?","select":["A. Kh\u1ed1i l\u01b0\u1ee3ng 400g","B. Tr\u1ecdng l\u01b0\u1ee3ng 400N","C. Chi\u1ec1u cao 400mm","D. V\u00f2ng ng\u1ef1c 400cm"],"hint":"","explain":"<span class='basic_left'>S\u1ed1 li\u1ec7u ph\u00f9 h\u1ee3p l\u00e0: tr\u1ecdng l\u01b0\u1ee3ng 400N. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2357},{"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":"N\u1ebfu so s\u00e1nh m\u1ed9t qu\u1ea3 c\u00e2n 1kg v\u00e0 m\u1ed9t t\u1eadp gi\u1ea5y 1000g th\u00ec:","select":["A. t\u1eadp gi\u1ea5y c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn h\u01a1n","B. qu\u1ea3 c\u00e2n c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng l\u1edbn h\u01a1n","C. qu\u1ea3 c\u00e2n v\u00e0 t\u1eadp gi\u1ea5y c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng b\u1eb1ng nhau","D. qu\u1ea3 c\u00e2n v\u00e0 t\u1eadp gi\u1ea5y c\u00f3 th\u1ec3 t\u00edch b\u1eb1ng nhau"],"hint":"","explain":"<span class='basic_left'>1kg = 1000g, v\u1eady qu\u1ea3 c\u00e2n v\u00e0 t\u1eadp gi\u1ea5y c\u00f3 tr\u1ecdng l\u01b0\u1ee3ng b\u1eb1ng nhau.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2358},{"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 c\u00e1i c\u1ed1c c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng b\u1eb1ng 200g \u0111\u1eb7t n\u1eb1m c\u00e2n b\u1eb1ng tr\u00ean b\u00e0n. L\u1ef1c t\u00e1c d\u1ee5ng c\u1ee7a m\u1eb7t b\u00e0n v\u00e0o c\u1ed1c nh\u1eadn gi\u00e1 tr\u1ecb n\u00e0o trong c\u00e1c gi\u00e1 tr\u1ecb sau? ","select":["A. 2N","B. 20N","C. 0,2N","D. 200N"],"hint":"","explain":"<span class='basic_left'>Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a qu\u1ea3 c\u00e2n l\u00e0 200g = 0,2kg n\u00ean tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a n\u00f3 l\u00e0 2N, v\u1eady l\u1ef1c c\u1ee7a m\u1eb7t b\u00e0n t\u00e1c d\u1ee5ng v\u00e0o c\u1ed1c l\u00e0 2N.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2359},{"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":"Khi treo m\u1ed9t c\u1ed1c \u0111\u1ef1ng 0,5l\u00edt n\u01b0\u1edbc v\u00e0o m\u1ed9t l\u1ef1c k\u1ebf khi \u0111\u00f3 l\u1ef1c k\u1ebf gi\u00e3n ra 8cm v\u00e0 kim ch\u1ec9 8N. Khi treo c\u1ed1c kh\u00f4ng \u0111\u1ef1ng n\u01b0\u1edbc v\u00e0o l\u1ef1c k\u1ebf l\u1ef1c k\u1ebf gi\u00e3n ra m\u1ed9t \u0111o\u1ea1n l\u00e0 bao nhi\u00eau v\u00e0 ch\u1ec9:","select":["A. 3cm - 3N.","B. 7,5cm - 3N.","C. 5cm - 5N.","D. 3cm - 0,3N."],"hint":"","explain":"<span class='basic_left'>0,5l n\u01b0\u1edbc n\u1eb7ng 5N, m\u00e0 l\u1ef1c k\u1ebf ch\u1ec9 8N, n\u00ean c\u1ed1c n\u1eb7ng 3N. V\u1eady khi ch\u1ec9 c\u00f3 c\u1ed1c th\u00ec l\u1ef1c k\u1ebf ch\u1ec9 3N v\u00e0 t\u01b0\u01a1ng \u1ee9ng d\u00e3n 3cm.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2360}],"lesson":{"save":0,"level":2}}