{"common":{"save":0,"post_id":"8531","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"7723","mon_id":"1158790","chapter_id":"1158796","post_id":"8531","question":"<p>Nh\u1edd có l\u1ef1c nào mà tàu thuy\u1ec1n có th\u1ec3 n\u1ed5i và di chuy\u1ec3n \u0111\u01b0\u1ee3c trên m\u1eb7t n\u01b0\u1edbc?<\/p>","options":["<strong>A.<\/strong> Tr\u1ecdng l\u1ef1c.","<strong>B.<\/strong> L\u1ef1c c\u1ea3n.","<strong>C.<\/strong> L\u1ef1c nâng.","<strong>D.<\/strong> L\u1ef1c \u0111\u1ea9y c\u1ee7a \u0111\u1ed9ng c\u01a1."],"correct":"3","level":"1","hint":"<p>- L\u1ef1c c\u1ea3n c\u1ee7a ch\u1ea5t l\u01b0u luôn c\u1ea3n tr\u1edf chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a v\u1eadt.<br \/>- L\u1ef1c nâng c\u1ee7a ch\u1ea5t l\u01b0u giúp v\u1eadt di chuy\u1ec3n d\u1ec5 dàng h\u01a1n trong môi tr\u01b0\u1eddng.<\/p>","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>C.<\/strong> L\u1ef1c nâng.<\/span><\/p><p>Nh\u1edd có <strong>l\u1ef1c nâng<\/strong> mà tàu thuy\u1ec1n có th\u1ec3 n\u1ed5i và di chuy\u1ec3n \u0111\u01b0\u1ee3c trên m\u1eb7t n\u01b0\u1edbc.<\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2025-02-25 08:32:00","option_type":"txt","len":2},{"id":"7725","mon_id":"1158790","chapter_id":"1158796","post_id":"8531","question":"<p>Vì sao \u0111i l\u1ea1i trên b\u1edd thì d\u1ec5 dàng còn \u0111i l\u1ea1i d\u01b0\u1edbi n\u01b0\u1edbc l\u1ea1i khó h\u01a1n?<\/p>","options":["<strong>A.<\/strong> Vì n\u01b0\u1edbc chuy\u1ec3n \u0111\u1ed9ng còn không khí không chuy\u1ec3n \u0111\u1ed9ng.","<strong>B.<\/strong> Vì khi xu\u1ed1ng n\u01b0\u1edbc, chúng ta “n\u1eb7ng h\u01a1n”.","<strong>C.<\/strong> Vì n\u01b0\u1edbc có l\u1ef1c c\u1ea3n còn không khí thì không có l\u1ef1c c\u1ea3n.","<strong>D.<\/strong> Vì l\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc l\u1edbn h\u01a1n l\u1ef1c c\u1ea3n c\u1ee7a không khí."],"correct":"4","level":"1","hint":"<p>So sánh l\u1ef1c c\u1ea3n gi\u1eefa hai môi tr\u01b0\u1eddng.<\/p>","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>D.<\/strong> Vì l\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc l\u1edbn h\u01a1n l\u1ef1c c\u1ea3n c\u1ee7a không khí.<\/span><\/p><p>Khi v\u1eadt chuy\u1ec3n \u0111\u1ed9ng trong n\u01b0\u1edbc, l\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc l\u1edbn h\u01a1n l\u1ef1c c\u1ea3n c\u1ee7a không khí.<\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2025-02-25 08:34:01","option_type":"txt","len":3},{"id":"7726","mon_id":"1158790","chapter_id":"1158796","post_id":"8531","question":"<p>L\u1ef1c c\u1ea3n c\u1ee7a ch\u1ea5t l\u01b0u ph\u1ee5 thu\u1ed9c vào y\u1ebfu t\u1ed1 nào?<\/p>","options":["<strong>A.<\/strong> Kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a v\u1eadt.","<strong>B.<\/strong> Hình d\u1ea1ng c\u1ee7a v\u1eadt.","<strong>C.<\/strong> Th\u1ec3 tích c\u1ee7a v\u1eadt.","<strong>D.<\/strong> \u0110\u1ed9 \u0111àn h\u1ed3i c\u1ee7a v\u1eadt."],"correct":"2","level":"1","hint":"","answer":"<p>Ch\u1ecdn <span style=\"color:#16a085;\"><strong>B.<\/strong> Hình d\u1ea1ng c\u1ee7a v\u1eadt.<\/span><\/p><p>L\u1ef1c c\u1ea3n c\u1ee7a ch\u1ea5t l\u01b0u ph\u1ee5 thu\u1ed9c vào <strong>hình d\u1ea1ng<\/strong> và t\u1ed1c \u0111\u1ed9 c\u1ee7a v\u1eadt.<\/p>","type":"choose","extra_type":"classic","user_id":"131","test":"0","date":"2025-02-25 08:36:35","option_type":"txt","len":2}]}
