{"common":{"save":0,"post_id":"4962","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"9789","post_id":"4962","mon_id":"1158149","chapter_id":"1158250","question":"<p>Theo em trong tr\u01b0\u1eddng h\u1ee3p nào d\u01b0\u1edbi \u0111ây ta c\u1ea7n dùng n\u0103ng l\u01b0\u1ee3ng nhi\u1ec1u h\u01a1n?<\/p>","options":["\u0110\u1ea1p xe lên d\u1ed1c","\u0110\u1ea1p xe xu\u1ed1ng d\u1ed1c"],"correct":"1","level":"3","hint":"","answer":"<p>Khi \u0111\u1ea1p xe lên d\u1ed1c ta c\u1ea7n dùng nhi\u1ec1u n\u0103ng l\u01b0\u1ee3ng h\u01a1n.<\/p><p>\u0110áp án \u0111úng là<span style=\"color:#16a085;\"><strong> \u0110\u1ea1p xe lên d\u1ed1c<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2021-10-20 03:52:20","option_type":"txt","len":2},{"id":"9791","post_id":"4962","mon_id":"1158149","chapter_id":"1158250","question":"<p>Trung bình trong 1 phút ch\u01a1i bóng \u0111á, c\u01a1 th\u1ec3 c\u1ea7n 60 kJ. <strong>H\u1ecfi n\u1ebfu ch\u01a1i bóng \u0111á trong n\u1eeda ti\u1ebfng thì c\u01a1 th\u1ec3 c\u1ea7n bao nhiêu calo?<\/strong><\/p>","options":["428 571,43 cal","428 571,42 cal"],"correct":"1","level":"3","hint":"","answer":"<p>N\u1eeda ti\u1ebfng là 30 phút.<\/p><p>Vì trong 1 phút ch\u01a1i bóng \u0111á c\u1ea7n 60 kJ nê trong n\u1eeda ti\u1ebfng c\u1ea7n<\/p><p>30 . 60 = 1800 kJ = 1 800 000 J<\/p><p>1 cal = 4,2 J ⇒ 1 800 000 J = 428 571,43 cal<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong>428 571,43 cal<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"1","date":"2021-10-20 03:55:43","option_type":"txt","len":1},{"id":"9793","post_id":"4962","mon_id":"1158149","chapter_id":"1158250","question":"<p>M\u1ed9t h\u1ecdc sinh xách m\u1ed9t chi\u1ebfc c\u1eb7p n\u1eb7ng 150 N t\u1eeb t\u1ea7ng 1 lên t\u1ea7ng 4 c\u1ee7a tr\u01b0\u1eddng h\u1ecdc. Bi\u1ebft m\u1ed7i t\u1ea7ng cao 3,2 m và 1 J là n\u0103ng l\u01b0\u1ee3ng c\u1ea7n \u0111\u1ec3 nâng m\u1ed9t v\u1eadt n\u1eb7ng 1 N lên \u0111\u1ed9 cao 1 m. H\u1ecfi n\u0103ng l\u01b0\u1ee3ng mà h\u1ecdc sinh \u0111ó c\u1ea7n s\u1eed d\u1ee5ng là bao nhiêu Jun?<\/p>","options":["1440 J","1044 J","1404 J"],"correct":"1","level":"3","hint":"","answer":"<p>\u0110\u1ed9 cao mà h\u1ecdc sinh \u0111ó nâng chi\u1ebfc c\u1eb7p là<\/p><p>3 . 3,2 = 9,6 m<\/p><p>N\u0103ng l\u01b0\u1ee3ng h\u1ecdc sinh \u0111ó c\u1ea7n s\u1eed d\u1ee5ng là<\/p><p>9,6 . 150 = 1440 J<\/p><p>\u0110áp án \u0111úng là <span style=\"color:#16a085;\"><strong>1440 J<\/strong><\/span><\/p>","type":"choose","extra_type":"shape1","time":"0","user_id":"131","test":"1","date":"2021-10-21 01:52:34","option_type":"txt","len":0}]}
