{"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":5,"ques":"Tr\u01b0\u1eddng h\u1ee3p n\u00e0o sau \u0111\u00e2y l\u1ef1c xu\u1ea5t hi\u1ec7n kh\u00f4ng ph\u1ea3i l\u00e0 l\u1ef1c ma s\u00e1t ?","select":["A. L\u1ef1c xu\u1ea5t hi\u1ec7n khi l\u1ed1p xe tr\u01b0\u1ee3t tr\u00ean m\u1eb7t \u0111\u01b0\u1eddng.","B. L\u1ef1c xu\u1ea5t hi\u1ec7n khi l\u00e0m m\u00f2n \u0111\u1ebf gi\u00e0y.","C. L\u1ef1c xu\u1ea5t hi\u1ec7n khi l\u00f2 x\u00f2 b\u1ecb n\u00e9n hay b\u1ecb d\u00e3n.","D. L\u1ef1c xu\u1ea5t hi\u1ec7n gi\u1eefa d\u00e2y cuaroa v\u1edbi b\u00e1nh xe truy\u1ec1n chuy\u1ec3n \u0111\u1ed9ng."],"hint":"","explain":"<span class='basic_left'>Tr\u01b0\u1eddng h\u1ee3p C kh\u00f4ng ph\u1ea3i l\u1ef1c ma s\u00e1t, \u0111\u00f3 l\u00e0 l\u1ef1c \u0111\u00e0n h\u1ed3i.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2580},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"C\u00e1ch l\u00e0m n\u00e0o sau \u0111\u00e2y gi\u1ea3m \u0111\u01b0\u1ee3c l\u1ef1c ma s\u00e1t?","select":["A. T\u0103ng \u0111\u1ed9 nh\u00e1m c\u1ee7a m\u1eb7t ti\u1ebfp x\u00fac.","B. T\u0103ng l\u1ef1c \u00e9p l\u00ean m\u1eb7t ti\u1ebfp x\u00fac.","C. T\u0103ng \u0111\u1ed9 nh\u1eb5n gi\u1eefa c\u00e1c m\u1eb7t ti\u1ebfp x\u00fac.","D. T\u0103ng di\u1ec7n t\u00edch b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac."],"hint":"","explain":"<span class='basic_left'>T\u0103ng \u0111\u1ed9 nh\u1eb5n gi\u1eefa c\u00e1c m\u1eb7t ti\u1ebfp x\u00fac gi\u1ea3m \u0111\u01b0\u1ee3c l\u1ef1c ma s\u00e1t. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2581},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"C\u00e2u n\u00e0o sau \u0111\u00e2y n\u00f3i v\u1ec1 l\u1ef1c ma s\u00e1t l\u00e0 \u0111\u00fang ?","select":["A. L\u1ef1c ma s\u00e1t c\u00f9ng h\u01b0\u1edbng v\u1edbi h\u01b0\u1edbng chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a v\u1eadt.","B. Khi v\u1eadt chuy\u1ec3n \u0111\u1ed9ng nhanh d\u1ea7n l\u00ean, l\u1ef1c ma s\u00e1t l\u1edbn h\u01a1n l\u1ef1c \u0111\u1ea9y.","C. Khi m\u1ed9t v\u1eadt chuy\u1ec3n \u0111\u1ed9ng ch\u1eadm d\u1ea7n, l\u1ef1c ma s\u00e1t nh\u1ecf h\u01a1n l\u1ef1c \u0111\u1ea9y.","D. L\u1ef1c ma s\u00e1t tr\u01b0\u1ee3t c\u1ea3n tr\u1edf chuy\u1ec3n \u0111\u1ed9ng tr\u01b0\u1ee3t c\u1ee7a v\u1eadt n\u00e0y l\u00ean m\u1eb7t v\u1eadt kia."],"hint":"","explain":"<span class='basic_left'>L\u1ef1c ma s\u00e1t tr\u01b0\u1ee3t c\u1ea3n tr\u1edf chuy\u1ec3n \u0111\u1ed9ng tr\u01b0\u1ee3t c\u1ee7a v\u1eadt n\u00e0y l\u00ean m\u1eb7t v\u1eadt kia.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2582},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"M\u1ed9t \u00f4 t\u00f4 \u0111ang chuy\u1ec3n \u0111\u1ed9ng tr\u00ean m\u1eb7t \u0111\u01b0\u1eddng, l\u1ef1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa b\u00e1nh xe v\u1edbi m\u1eb7t \u0111\u01b0\u1eddng l\u00e0:","select":["A. Ma s\u00e1t tr\u01b0\u1ee3t.","B. Ma s\u00e1t l\u0103n.","C. Ma s\u00e1t ngh\u1ec9.","D. L\u1ef1c qu\u00e1n t\u00ednh."],"hint":"","explain":"<span class='basic_left'>M\u1ed9t \u00f4 t\u00f4 \u0111ang chuy\u1ec3n \u0111\u1ed9ng tr\u00ean m\u1eb7t \u0111\u01b0\u1eddng, l\u1ef1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa b\u00e1nh xe v\u1edbi m\u1eb7t \u0111\u01b0\u1eddng l\u00e0 ma s\u00e1t l\u0103n.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2583},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"M\u1ed9t \u00f4 t\u00f4 chuy\u1ec3n \u0111\u1ed9ng th\u1eb3ng \u0111\u1ec1u khi l\u1ef1c k\u00e9o c\u1ee7a \u0111\u1ed9ng c\u01a1 \u00f4 t\u00f4 l\u00e0 800N. T\u00ednh \u0111\u1ed9 l\u1edbn c\u1ee7a l\u1ef1c ma s\u00e1t t\u00e1c d\u1ee5ng l\u00ean c\u00e1c b\u00e1nh xe \u00f4 t\u00f4 (b\u1ecf qua l\u1ef1c c\u1ea3n c\u1ee7a kh\u00f4ng kh\u00ed)? ","select":["A. 800N.","B. Nh\u1ecf h\u01a1n 800N.","C. L\u1edbn h\u01a1n 800N.","D. Ch\u01b0a th\u1ec3 t\u00ednh \u0111\u01b0\u1ee3c."],"hint":"","explain":"<span class='basic_left'> \u00d4 t\u00f4 chuy\u1ec3n \u0111\u1ed9ng th\u1eb3ng \u0111\u1ec1u khi l\u1ef1c k\u00e9o c\u00e2n b\u1eb1ng v\u1edbi l\u1ef1c ma s\u00e1t:<br\/>${{F}_{ms}}$ = $F_k$ = 800N<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2584},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"M\u1ed9t \u0111\u1ea7u t\u00e0u khi kh\u1edfi h\u00e0nh c\u1ea7n m\u1ed9t l\u1ef1c k\u00e9o 10000N, nh\u01b0ng khi \u0111i chuy\u1ec3n \u0111\u1ed9ng th\u1eb3ng \u0111\u1ec1u tr\u00ean \u0111\u01b0\u1eddng s\u1eaft th\u00ec ch\u1ec9 c\u1ea7n m\u1ed9t l\u1ef1c k\u00e9o 5000N. H\u1ecfi l\u1ef1c ma s\u00e1t khi b\u00e1nh xe l\u0103n \u0111\u1ec1u tr\u00ean \u0111\u01b0\u1eddng s\u1eaft c\u00f3 \u0111\u1ed9 l\u1edbn b\u0103ng bao nhi\u00eau ph\u1ea7n c\u1ee7a tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a \u0111\u1ea7u t\u00e0u ? Bi\u1ebft \u0111\u1ea7u t\u00e0u c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng 10 t\u1ea5n. ","select":["A. 0.005 l\u1ea7n.","B. 0.05 l\u1ea7n.","C. 0.5 l\u1ea7n.","D. 5 l\u1ea7n."],"hint":"","explain":"<span class='basic_left'>Khi b\u00e1nh xe l\u0103n \u0111\u1ec1u tr\u00ean \u0111\u01b0\u1eddng s\u1eaft th\u00ec l\u1ef1c k\u00e9o c\u00e2n b\u1eb1ng v\u1edbi l\u1ef1c c\u1ea3n khi \u0111\u00f3 :<br\/>$F_k$ = 5000N = ${{F}_{ms}}$.<br\/>\u0110\u00f4\u0309i: 10 t\u00e2\u0301n = 10000kg<br\/>So v\u1edbi tr\u1ecdng l\u01b0\u1ee3ng \u0111\u1ea7u t\u00e0u l\u1ef1c ma s\u00e1t b\u1eb1ng:$\\dfrac{{{F}_{ms}}}{P}=\\dfrac{5000}{10000\\times 10}=0,05$ l\u1ea7n. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2585},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"L\u1ef1c ma s\u00e1t ngh\u1ec9 xu\u1ea5t hi\u1ec7n khi: ","select":["A. Quy\u1ec3n s\u00e1ch \u0111\u1ec3 y\u00ean tr\u00ean m\u1eb7t b\u00e0n n\u1eb1m nghi\u00eang.","B. \u00d4 t\u00f4 \u0111ang chuy\u1ec3n \u0111\u1ed9ng, \u0111\u1ed9t ng\u1ed9t h\u00e3m phanh (th\u1eafng).","C. Qu\u1ea3 b\u00f3ng b\u00e0n \u0111\u1eb7t tr\u00ean m\u1eb7t n\u1eb1m ngang nh\u1eb5n b\u00f3ng.","D. Xe \u0111\u1ea1p \u0111ang xu\u1ed1ng d\u1ed1c."],"hint":"","explain":"<span class='basic_left'>L\u1ef1c ma s\u00e1t ngh\u1ec9 xu\u1ea5t hi\u1ec7n khi quy\u1ec3n s\u00e1ch \u0111\u1ec3 y\u00ean tr\u00ean m\u1eb7t b\u00e0n n\u1eb1m nghi\u00eang, gi\u1eef cho quy\u1ec3n s\u00e1ch kh\u00f4ng b\u1ecb tr\u01b0\u1ee3t xu\u1ed1ng.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2586},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"L\u1ef1c ma s\u00e1t tr\u01b0\u1ee3t xu\u1ea5t hi\u1ec7n trong tr\u01b0\u1eddng h\u1ee3p n\u00e0o sau \u0111\u00e2y ? ","select":["A. Ma s\u00e1t gi\u1eefa c\u00e1c vi\u00ean bi v\u1edbi \u1ed5 tr\u1ee5c xe \u0111\u1ea1p, xe m\u00e1y.","B. Ma s\u00e1t gi\u1eefa c\u1ed1c n\u01b0\u1edbc \u0111\u1eb7t tr\u00ean m\u1eb7t b\u00e0n v\u1edbi m\u1eb7t b\u00e0n.","C. Ma s\u00e1t gi\u1eefa l\u1ed1p xe v\u1edbi m\u1eb7t \u0111\u01b0\u1eddng khi xe \u0111ang chuy\u1ec3n \u0111\u1ed9ng.","D. Ma s\u00e1t gi\u1eefa m\u00e1 phanh v\u1edbi v\u00e0nh xe."],"hint":"","explain":"<span class='basic_left'>L\u1ef1c ma s\u00e1t tr\u01b0\u1ee3t xu\u1ea5t hi\u1ec7n trong tr\u01b0\u1eddng h\u1ee3p ma s\u00e1t gi\u1eefa m\u00e1 phanh v\u1edbi v\u00e0nh xe, gi\u00fap xe d\u1eebng l\u1ea1i khi ta phanh.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2587},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"\u0110\u1eb7t v\u1eadt tr\u00ean m\u1ed9t m\u1eb7t b\u00e0n n\u1eb1m ngang, m\u00f3c l\u1ef1c k\u1ebf v\u00e0o v\u1eadt k\u00e9o sao cho l\u1ef1c k\u1ebf lu\u00f4n song song v\u1edbi m\u1eb7t b\u00e0n v\u00e0 v\u1eadt tr\u01b0\u1ee3t nhanh d\u1ea7n. S\u1ed1 ch\u1ec9 c\u1ee7a l\u1ef1c k\u1ebf khi \u0111\u00f3:","select":["A. B\u1eb1ng c\u01b0\u1eddng \u0111\u1ed9 l\u1ef1c ma s\u00e1t ngh\u1ec9 t\u00e1c d\u1ee5ng l\u00ean v\u1eadt.","B. B\u1eb1ng c\u01b0\u1eddng \u0111\u1ed9 l\u1ef1c ma s\u00e1t tr\u01b0\u1ee3t t\u00e1c d\u1ee5ng l\u00ean v\u1eadt.","C. L\u1edbn h\u01a1n c\u01b0\u1eddng \u0111\u1ed9 l\u1ef1c ma s\u00e1t tr\u01b0\u1ee3t t\u00e1c d\u1ee5ng l\u00ean v\u1eadt.","D. Nh\u1ecf h\u01a1n c\u01b0\u1eddng \u0111\u1ed9 l\u1ef1c ma s\u00e1t tr\u01b0\u1ee3t t\u00e1c d\u1ee5ng l\u00ean v\u1eadt."],"hint":"","explain":"<span class='basic_left'>Khi v\u1eadt b\u1eaft \u0111\u1ea7u tr\u01b0\u1ee3t, l\u1ef1c ma s\u00e1t ngh\u1ec9 l\u1edbn h\u01a1n l\u1ef1c ma s\u00e1t khi v\u1eadt \u0111\u00e3 tr\u01b0\u1ee3t, n\u00ean khi ta \u0111\u1ea9y hay k\u00e9o m\u1ed9t v\u1eadt th\u00ec l\u00fac \u0111\u1ea7u lu\u00f4n kh\u00f3 kh\u0103n, khi v\u1eadt \u0111\u00e3 tr\u01b0\u1ee3t r\u1ed3i th\u00ec d\u1ec5 h\u01a1n. V\u00ec v\u1eadt chuy\u1ec3n \u0111\u1ed9ng nhanh d\u1ea7n n\u00ean l\u1ef1c ma k\u00e9o ph\u1ea3i l\u1edbn h\u01a1n l\u1ef1c ma s\u00e1t. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2588},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"M\u1ed9t con ng\u1ef1a k\u00e9o m\u1ed9t c\u00e1i xe c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng 800kg ch\u1ea1y th\u1eb3ng \u0111\u1ec1u tr\u00ean m\u1eb7t \u0111\u01b0\u1eddng n\u1eb1m ngang. T\u00ednh l\u1ef1c k\u00e9o c\u1ee7a ng\u1ef1a bi\u1ebft l\u1ef1c ma s\u00e1t ch\u1ec9 b\u1eb1ng 0,2 l\u1ea7n tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a xe.","select":["A. 2000N.","B. 3000N.","C. 3200N.","D. 1600N."],"hint":"","explain":"<span class='basic_left'>Tr\u1ecdng l\u01b0\u1ee3ng c\u1ee7a xe l\u00e0: 8000N<br\/>$F_k$ = ${{F}_{msn}}$ = 8000 x 0,2 = 1600N<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":2}]}],"id_ques":2589},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Tr\u01b0\u1eddng h\u1ee3p n\u00e0o sau \u0111\u00e2y l\u1ef1c ma s\u00e1t c\u00f3 h\u1ea1i? ","select":["A. Khi k\u00e9o co, l\u1ef1c ma s\u00e1t gi\u1eefa ch\u00e2n c\u1ee7a v\u1eadn \u0111\u1ed9ng vi\u00ean v\u1edbi m\u1eb7t \u0111\u1ea5t, gi\u1eefa tay c\u1ee7a v\u1eadn \u0111\u1ed9ng vi\u00ean v\u1edbi s\u1ee3i d\u00e2y k\u00e9o.","B. Khi m\u00e1y v\u1eadn h\u00e0nh, ma s\u00e1t gi\u1eefa c\u00e1c \u1ed5 tr\u1ee5c c\u00e1c b\u00e1nh r\u0103ng l\u00e0m m\u00e1y m\u00f3c s\u1ebd b\u1ecb m\u00f2n \u0111i.","C. R\u1eafc c\u00e1t tr\u00ean \u0111\u01b0\u1eddng ray khi t\u00e0u l\u00ean d\u1ed1c.","D. R\u1eafc nh\u1ef1a th\u00f4ng v\u00e0o b\u1ec1 m\u1eb7t d\u00e2y cua roa, v\u00e0o cung d\u00e2y c\u1ee7a \u0111\u00e0n vi-\u00f4-l\u00f4ng, \u0111\u00e0n nh\u1ecb (\u0111\u00e0n c\u00f2)."],"hint":"","explain":"<span class='basic_left'>Khi m\u00e1y v\u1eadn h\u00e0nh, ma s\u00e1t gi\u1eefa c\u00e1c \u1ed5 tr\u1ee5c c\u00e1c b\u00e1nh r\u0103ng l\u00e0m m\u00e1y m\u00f3c s\u1ebd b\u1ecb m\u00f2n \u0111i, \u0111\u00e2y l\u00e0 ma s\u00e1t c\u00f3 h\u1ea1i, c\u1ea7n d\u00f9ng d\u1ea7u, m\u1ee1 b\u00f4i tr\u01a1n \u0111\u1ec3 gi\u1ea3m ma s\u00e1t c\u00f3 h\u1ea1i n\u00e0y.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":1}]}],"id_ques":2590},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Tr\u01b0\u1eddng h\u1ee3p n\u00e0o sau \u0111\u00e2y l\u1ef1c ma s\u00e1t kh\u00f4ng ph\u1ea3i l\u00e0 l\u1ef1c ma s\u00e1t l\u0103n? ","select":["A. Ma s\u00e1t gi\u1eefa c\u00e1c vi\u00ean bi trong \u1ed5 tr\u1ee5c quay.","B. Ma s\u00e1t gi\u1eefa b\u00e1nh xe v\u00e0 m\u1eb7t \u0111\u01b0\u1eddng khi \u0111i tr\u00ean \u0111\u01b0\u1eddng.","C. Ma s\u00e1t gi\u1eefa c\u00e1c con l\u0103n v\u00e0 m\u1eb7t \u0111\u01b0\u1eddng khi di chuy\u1ec3n v\u1eadt n\u1eb7ng tr\u00ean \u0111\u01b0\u1eddng.","D. Ma s\u00e1t gi\u1eefa kh\u0103n lau v\u1edbi m\u1eb7t s\u00e0n khi lau nh\u00e0."],"hint":"","explain":"<span class='basic_left'>\u0110\u00f3 l\u00e0 ma s\u00e1t tr\u01b0\u1ee3t.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2591},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Nh\u1eadn x\u00e9t n\u00e0o sau \u0111\u00e2y v\u1ec1 l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean \u00f4t\u00f4 chuy\u1ec3n \u0111\u1ed9ng tr\u00ean \u0111\u01b0\u1eddng l\u00e0 \u0111\u00fang?","select":["A. L\u00fac kh\u1edfi h\u00e0nh, l\u1ef1c k\u00e9o m\u1ea1nh h\u01a1n l\u1ef1c ma s\u00e1t ngh\u1ec9.","B. Khi chuy\u1ec3n \u0111\u1ed9ng th\u1eb3ng \u0111\u1ec1u tr\u00ean \u0111\u01b0\u1eddng n\u1eb1m ngang l\u1ef1c k\u00e9o b\u1eb1ng v\u1edbi l\u1ef1c ma s\u00e1t l\u0103n.","C. \u0110\u1ec3 xe chuy\u1ec3n \u0111\u1ed9ng ch\u1eadm l\u1ea1i ch\u1ec9 c\u1ea7n h\u00e3m phanh \u0111\u1ec3 chuy\u1ec3n l\u1ef1c s\u00e1t l\u0103n th\u00e0nh l\u1ef1c ma s\u00e1t tr\u01b0\u1ee3t.","D. C\u1ea3 3 \u00fd ki\u1ebfn \u0111\u1ec1u \u0111\u00fang."],"hint":"Nh\u1eadn x\u00e9t n\u00e0o sau \u0111\u00e2y v\u1ec1 l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean \u00f4t\u00f4 chuy\u1ec3n \u0111\u1ed9ng tr\u00ean \u0111\u01b0\u1eddng l\u00e0 sai? ","explain":"<span class='basic_left'><br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2592},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"M\u1ed9t v\u1eadt \u0111ang n\u1eb1m y\u00ean tr\u00ean m\u1eb7t ph\u1eb3ng n\u1eb1m ngang. Khi t\u00e1c d\u1ee5ng l\u00ean v\u1eadt m\u1ed9t l\u1ef1c c\u00f3 ph\u01b0\u01a1ng n\u1eb1m ngang, h\u01b0\u1edbng t\u1eeb tr\u00e1i sang ph\u1ea3i, c\u01b0\u1eddng \u0111\u1ed9 2N th\u00ec v\u1eadt v\u1eabn n\u1eb1m y\u00ean. L\u1ef1c ma s\u00e1t ngh\u1ec9 t\u00e1c d\u1ee5ng l\u00ean v\u1eadt khi \u0111\u00f3 c\u00f3: ","select":["A. Ph\u01b0\u01a1ng n\u1eb1m ngang, h\u01b0\u1edbng t\u1eeb ph\u1ea3i sang tr\u00e1i, c\u01b0\u1eddng \u0111\u1ed9 b\u1eb1ng 2N.","B. Ph\u01b0\u01a1ng n\u1eb1m ngang, h\u01b0\u1edbng t\u1eeb tr\u00e1i sang ph\u1ea3i, c\u01b0\u1eddng \u0111\u1ed9 b\u1eb1ng 2N.","C. Ph\u01b0\u01a1ng n\u1eb1m ngang, h\u01b0\u1edbng t\u1eeb ph\u1ea3i sang tr\u00e1i, c\u01b0\u1eddng \u0111\u1ed9 l\u1edbn h\u01a1n 2N.","D. Ph\u01b0\u01a1ng n\u1eb1m ngang, h\u01b0\u1edbng t\u1eeb tr\u00e1i sang ph\u1ea3i, c\u01b0\u1eddng \u0111\u1ed9 l\u1edbn h\u01a1n 2N."],"hint":"","explain":"<span class='basic_left'>L\u1ef1c ma s\u00e1t ngh\u1ec9 t\u00e1c d\u1ee5ng l\u00ean v\u1eadt khi \u0111\u00f3 c\u00f3 chi\u1ec1u ch\u1ed1ng l\u1ea1i s\u1ef1 chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a v\u1eadt n\u00ean n\u00f3 s\u1ebd c\u00e2n b\u1eb1ng v\u1edbi l\u1ef1c t\u00e1c d\u1ee5ng l\u00ean v\u1eadt. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":1}]}],"id_ques":2593},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"C\u00f3 m\u1ea5y lo\u1ea1i l\u1ef1c ma s\u00e1t?","select":["A. 1.","B. 2.","C. 3.","D. 4."],"hint":"","explain":"<span class='basic_left'>C\u00f3 3 lo\u1ea1i l\u1ef1c ma s\u00e1t la l\u1ef1c ma s\u00e1t ngh\u1ec9, l\u1ef1c ma s\u00e1t l\u0103n v\u00e0 l\u1ef1c ma s\u00e1t tr\u01b0\u1ee3t. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":2}]}],"id_ques":2594},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[1]],"list":[{"point":5,"ques":"Khi xe \u0111ang chuy\u1ec3n \u0111\u1ed9ng, mu\u1ed1n xe \u0111\u1ee9ng l\u1ea1i, ng\u01b0\u1eddi ta d\u00f9ng phanh xe \u0111\u1ec3:","select":["A. T\u0103ng ma s\u00e1t tr\u01b0\u1ee3t.","B. T\u0103ng ma s\u00e1t l\u0103n.","C. T\u0103ng ma s\u00e1t ngh\u1ec9.","D. T\u0103ng qu\u00e1n t\u00ednh."],"hint":"","explain":"<span class='basic_left'>Khi xe \u0111ang chuy\u1ec3n \u0111\u1ed9ng, mu\u1ed1n xe \u0111\u1ee9ng l\u1ea1i, ng\u01b0\u1eddi ta d\u00f9ng phanh xe \u0111\u1ec3 t\u0103ng ma s\u00e1t tr\u01b0\u1ee3t, l\u00e0m gi\u1ea3m chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a xe. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 A.<\/span><\/span> ","column":2}]}],"id_ques":2595},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[4]],"list":[{"point":5,"ques":"Tr\u01b0\u1eddng h\u1ee3p n\u00e0o sau \u0111\u00e2y xu\u1ea5t hi\u1ec7n l\u1ef1c ma s\u00e1t tr\u01b0\u1ee3t?","select":["A. Vi\u00ean bi l\u0103n tr\u00ean c\u00e1t.","B. B\u00e1nh xe \u0111\u1ea1p ch\u1ea1y tr\u00ean \u0111\u01b0\u1eddng.","C. Tr\u1ee5c \u1ed5 bi \u1edf xe m\u00e1y \u0111ang ho\u1ea1t \u0111\u1ed9ng.","D. Khi vi\u1ebft ph\u1ea5n tr\u00ean b\u1ea3ng."],"hint":"","explain":"<span class='basic_left'>Khi vi\u1ebft ph\u1ea5n tr\u00ean b\u1ea3ng xu\u1ea5t hi\u1ec7n l\u1ef1c ma s\u00e1t gi\u1eefa ph\u1ea5n v\u00e0 b\u1eb3ng. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 D.<\/span><\/span> ","column":1}]}],"id_ques":2596},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"Trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p xu\u1ea5t hi\u1ec7n l\u1ef1c d\u01b0\u1edbi \u0111\u00e2y tr\u01b0\u1eddng h\u1ee3p n\u00e0o l\u00e0 l\u1ef1c ma s\u00e1t.","select":["A. L\u1ef1c l\u00e0m cho n\u01b0\u1edbc ch\u1ea3y t\u1eeb tr\u00ean cao xu\u1ed1ng","B. L\u1ef1c xu\u1ea5t hi\u1ec7n khi l\u00f2 xo b\u1ecb n\u00e9n","C. L\u1ef1c xu\u1ea5t hi\u1ec7n l\u00e0m m\u00f2n l\u1ed1p xe","D. L\u1ef1c t\u00e1c d\u1ee5ng l\u00e0m xe \u0111\u1ea1p chuy\u1ec3n \u0111\u1ed9ng"],"hint":"","explain":"<span class='basic_left'>L\u1ef1c xu\u1ea5t hi\u1ec7n l\u00e0m m\u00f2n l\u1ed1p xe l\u00e0 l\u1ef1c ma s\u00e1t gi\u1eefa l\u1ed1p xe v\u00e0 m\u1eb7t \u0111\u01b0\u1eddng. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2597},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[2]],"list":[{"point":5,"ques":"Hi\u1ebfu \u0111\u01b0a 1 v\u1eadt n\u1eb7ng h\u00ecnh tr\u1ee5 l\u00ean cao b\u1eb1ng 2 c\u00e1ch, ho\u1eb7c l\u00e0 l\u0103n v\u1eadt tr\u00ean m\u1eb7t ph\u1eb3ng nghi\u00eang, ho\u1eb7c k\u00e9o v\u1eadt tr\u01b0\u1ee3t tr\u00ean m\u1eb7t ph\u1eb3ng nghi\u00eang. C\u00e1ch n\u00e0o l\u1ef1c ma s\u00e1t l\u1edbn h\u01a1n?","select":["A. L\u0103n v\u1eadt.","B. K\u00e9o v\u1eadt.","C. C\u1ea3 2 c\u00e1ch nh\u01b0 nhau.","D. Kh\u00f4ng so s\u00e1nh \u0111\u01b0\u1ee3c."],"hint":"","explain":"<span class='basic_left'>Ma s\u00e1t l\u0103n nh\u1ecf h\u01a1n ma s\u00e1t tr\u01b0\u1ee3t. <br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 B.<\/span><\/span> ","column":2}]}],"id_ques":2598},{"time":24,"part":[{"title":"L\u1ef1a ch\u1ecdn \u0111\u00e1p \u00e1n \u0111\u00fang nh\u1ea5t","title_trans":"","temp":"multiple_choice","correct":[[3]],"list":[{"point":5,"ques":"T\u1ea1i sao tr\u00ean l\u1ed1p \u00f4t\u00f4, xe m\u00e1y, xe \u0111\u1ea1p ng\u01b0\u1eddi ta ph\u1ea3i x\u1ebb r\u00e3nh?","select":["A. \u0110\u1ec3 trang tr\u00ed cho b\u00e1nh xe \u0111\u1eb9p h\u01a1n.","B. \u0110\u1ec3 gi\u1ea3m di\u1ec7n t\u00edch ti\u1ebfp x\u00fac v\u1edbi m\u1eb7t \u0111\u1ea5t, gi\u00fap xe \u0111i nhanh h\u01a1n.","C. \u0110\u1ec3 l\u00e0m t\u0103ng ma s\u00e1t gi\u00fap xe kh\u00f4ng b\u1ecb tr\u01a1n tr\u01b0\u1ee3t.","D. \u0110\u1ec3 ti\u1ebft ki\u1ec7m v\u1eadt li\u1ec7u."],"hint":"","explain":"<span class='basic_left'>\u0110\u1ec3 l\u00e0m t\u0103ng ma s\u00e1t gi\u00fap xe kh\u00f4ng b\u1ecb tr\u01a1n tr\u01b0\u1ee3t n\u00ean tr\u00ean l\u1ed1p \u00f4t\u00f4, xe m\u00e1y, xe \u0111\u1ea1p ng\u01b0\u1eddi ta ph\u1ea3i x\u1ebb r\u00e3nh.<br\/> <span class='basic_pink'>V\u1eady \u0111\u00e1p \u00e1n \u0111\u00fang l\u00e0 C.<\/span><\/span> ","column":1}]}],"id_ques":2599}],"lesson":{"save":0,"level":2}}