{"common":{"save":0,"post_id":"8046","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"8585","post_id":"8046","mon_id":"1159533","chapter_id":"1159535","question":"<p>Công là gì?<\/p>","options":["A. Là công vi\u1ec7c làm ra n\u0103ng l\u01b0\u1ee3ng","B. Là s\u1ef1 chuy\u1ec3n hóa n\u0103ng l\u01b0\u1ee3ng t\u1eeb d\u1ea1ng này sang d\u1ea1ng khác","C. Là công su\u1ea5t trong m\u1ed9t \u0111\u01a1n v\u1ecb th\u1eddi gian","D. Là l\u1ef1c tác d\u1ee5ng lên m\u1ed9t v\u1eadt mà làm cho v\u1eadt di chuy\u1ec3n m\u1ed9t \u0111o\u1ea1n \u0111\u01b0\u1eddng"],"correct":"4","level":"1","hint":"<p>Công \u0111\u01b0\u1ee3c tính theo công th\u1ee9c: A = F.s.cos α<\/p>","answer":"<p>\u0110áp án: D. Là l\u1ef1c tác d\u1ee5ng lên m\u1ed9t v\u1eadt mà làm cho v\u1eadt di chuy\u1ec3n m\u1ed9t \u0111o\u1ea1n \u0111\u01b0\u1eddng<br \/>=> Gi\u1ea3i thích: N\u1ebfu l\u1ef1c không \u0111\u1ed5i <span class=\"math-tex\">$\\overrightarrow{F}$<\/span> tác d\u1ee5ng lên m\u1ed9t v\u1eadt và \u0111i\u1ec3m \u0111\u1eb7t c\u1ee7a l\u1ef1c \u0111ó chuy\u1ec3n d\u1eddi m\u1ed9t \u0111o\u1ea1n s theo h\u01b0\u1edbng h\u1ee3p v\u1edbi h\u01b0\u1edbng c\u1ee7a l\u1ef1c góc α thì công c\u1ee7a l\u1ef1c <span class=\"math-tex\">$\\overrightarrow{F}$<\/span> \u0111\u01b0\u1ee3c tính theo công th\u1ee9c:<br \/> A = F.s.cosα<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"125","test":"0","date":"2024-11-16 17:11:20","option_type":"txt","len":3},{"id":"8586","post_id":"8046","mon_id":"1159533","chapter_id":"1159535","question":"<p>Công su\u1ea5t c\u1ee7a m\u1ed9t máy là gì?<\/p>","options":["A. L\u01b0\u1ee3ng công mà máy th\u1ef1c hi\u1ec7n trong m\u1ed9t giây","B. L\u01b0\u1ee3ng công mà máy th\u1ef1c hi\u1ec7n trong m\u1ed9t \u0111\u01a1n v\u1ecb th\u1eddi gian","C. L\u01b0\u1ee3ng n\u0103ng l\u01b0\u1ee3ng mà máy tiêu th\u1ee5 trong m\u1ed9t giây","D. L\u01b0\u1ee3ng nhi\u1ec7t mà máy s\u1ea3n sinh ra trong m\u1ed9t giây"],"correct":"2","level":"1","hint":"<p>Công th\u1ee9c tính công su\u1ea5t:<\/p><p><img alt=\"V\u1eadt L\u00ed l\u1edbp 10 | Chuy\u00ean \u0111\u1ec1: L\u00fd thuy\u1ebft v\u00e0 B\u00e0i t\u1eadp V\u1eadt L\u00ed 10 c\u00f3 \u0111\u00e1p \u00e1n\" src=\"https:\/\/vietjack.com\/vat-ly-lop-10\/images\/ly-thuyet-cong-va-cong-suat-4.PNG\" \/><\/p>","answer":"<p>\u0110áp án: B. L\u01b0\u1ee3ng công mà máy th\u1ef1c hi\u1ec7n trong m\u1ed9t \u0111\u01a1n v\u1ecb th\u1eddi gian<br \/>Công su\u1ea5t là công th\u1ef1c hi\u1ec7n \u0111\u01b0\u1ee3c trong m\u1ed9t \u0111\u01a1n v\u1ecb th\u1eddi gian. Kí hi\u1ec7u là P<\/p><p><img alt=\"V\u1eadt L\u00ed l\u1edbp 10 | Chuy\u00ean \u0111\u1ec1: L\u00fd thuy\u1ebft v\u00e0 B\u00e0i t\u1eadp V\u1eadt L\u00ed 10 c\u00f3 \u0111\u00e1p \u00e1n\" src=\"https:\/\/vietjack.com\/vat-ly-lop-10\/images\/ly-thuyet-cong-va-cong-suat-4.PNG\" \/><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"125","test":"0","date":"2024-11-16 17:15:33","option_type":"txt","len":3},{"id":"8607","post_id":"8046","mon_id":"1159533","chapter_id":"1159535","question":"<p>\u0110\u01a1n v\u1ecb c\u1ee7a công trong h\u1ec7 SI là:<br \/> <\/p>","options":["A. Watt (W)","B. Joule (J)","C. Newton (N)","D. Kilogram (kg)"],"correct":"2","level":"1","hint":"","answer":"<p>\u0110áp án: B. Joule (J)<\/p><p>Trong h\u1ec7 \u0111\u01a1n v\u1ecb SI, \u0111\u01a1n v\u1ecb c\u1ee7a công là Joule (J)<\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"125","test":"0","date":"2024-11-16 23:14:57","option_type":"txt","len":2}]}
