{"common":{"save":0,"post_id":"6414","level":1,"total":10,"point":10,"point_extra":0},"segment":[{"id":"6272","mon_id":"1158790","chapter_id":"1158865","post_id":"6414","question":"<p>\u0110\u1ea1i l\u01b0\u1ee3ng \u0111\u1eb7c tr\u01b0ng cho kh\u1ea3 n\u0103ng truy\u1ec1n chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a m\u1ed9t v\u1eadt khi t\u01b0\u01a1ng tác v\u1edbi v\u1eadt khác g\u1ecdi là<\/p>","options":["<strong>A<\/strong>. \u0111\u1ed9ng n\u0103ng.","<strong>B<\/strong>. th\u1ebf n\u0103ng.","<strong>C<\/strong>. c\u01a1 n\u0103ng.","<strong>D<\/strong>. \u0111\u1ed9ng l\u01b0\u1ee3ng."],"correct":"4","level":"1","hint":"","answer":"<p>\u0110\u1ea1i l\u01b0\u1ee3ng \u0111\u1eb7c tr\u01b0ng cho kh\u1ea3 n\u0103ng truy\u1ec1n chuy\u1ec3n \u0111\u1ed9ng c\u1ee7a m\u1ed9t v\u1eadt khi t\u01b0\u01a1ng tác v\u1edbi v\u1eadt khác g\u1ecdi là \u0111\u1ed9ng l\u01b0\u1ee3ng.<br \/>\u0110áp án \u0111úng: <span style=\"color:#2980b9;\"><strong>D<\/strong>. \u0111\u1ed9ng l\u01b0\u1ee3ng. <\/span><\/p>","type":"choose","extra_type":"classic","user_id":"149","test":"0","date":"2023-02-11 07:57:34","option_type":"txt","len":1},{"id":"6273","mon_id":"1158790","chapter_id":"1159886","post_id":"6414","question":"<p>\u0110\u01a1n v\u1ecb c\u1ee7a \u0111\u1ed9ng l\u01b0\u1ee3ng b\u1eb1ng<\/p>","options":["<strong>A<\/strong>. N\/s.","<strong>B<\/strong>. N.s.","<strong>C<\/strong>. N.m.","<strong>D.<\/strong> N.m\/s."],"correct":"2","level":"1","hint":"<p>\u0110\u1ed9ng l\u01b0\u1ee3ng p \u0111\u01b0\u1ee3c xác \u0111\u1ecbnh b\u1edfi công th\u1ee9c:<\/p><p>p=m⋅v<br \/>m: kg<br \/>v: m\/s<\/p>","answer":"<p>\u0110\u1ed9ng l\u01b0\u1ee3ng p \u0111\u01b0\u1ee3c xác \u0111\u1ecbnh b\u1edfi công th\u1ee9c:<\/p><p>p=m⋅v<br \/>m: kg<br \/>v: m\/s<\/p><p>→ \u0110\u01a1n v\u1ecb: kg·m\/s<\/p><p>Mà ta có:<\/p><p>1N=1kg⋅m\/<span class=\"math-tex\">$s^2$<\/span><br \/>⇒1kg⋅m\/s=1N⋅s<\/p><p>\u0110\u01a1n v\u1ecb c\u1ee7a \u0111\u1ed9ng l\u01b0\u1ee3ng là N·s<br \/>\u0110áp án \u0111úng: <span style=\"color:#2980b9;\"><strong>B<\/strong>. N.s.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"149","test":"0","date":"2023-02-11 07:59:43","option_type":"txt","len":0},{"id":"6274","mon_id":"1158790","chapter_id":"1158865","post_id":"6414","question":"<p>\u0110i\u1ec1u nào sau \u0111ây sai khi nói v\u1ec1 \u0111\u1ed9ng l\u01b0\u1ee3ng?<\/p>","options":["<strong>A.<\/strong> \u0110\u1ed9ng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t v\u1eadt có \u0111\u1ed9 l\u1edbn b\u1eb1ng tích kh\u1ed1i l\u01b0\u1ee3ng và t\u1ed1c \u0111\u1ed9 c\u1ee7a v\u1eadt.","<strong>B<\/strong>. Trong h\u1ec7 kín, \u0111\u1ed9ng l\u01b0\u1ee3ng c\u1ee7a h\u1ec7 \u0111\u01b0\u1ee3c b\u1ea3o toàn.","<strong>C<\/strong>. \u0110\u1ed9ng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t v\u1eadt có \u0111\u1ed9 l\u1edbn b\u1eb1ng tích kh\u1ed1i l\u01b0\u1ee3ng và bình ph\u01b0\u01a1ng v\u1eadn t\u1ed1c.","<strong>D.<\/strong> \u0110\u1ed9ng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t v\u1eadt là m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng véc t\u01a1."],"correct":"3","level":"1","hint":"<p>- \u0110\u1ed9ng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t v\u1eadt là m\u1ed9t \u0111\u1ea1i l\u01b0\u1ee3ng véc t\u01a1.<br \/>- \u0110\u1ed9ng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t v\u1eadt có \u0111\u1ed9 l\u1edbn b\u1eb1ng tích kh\u1ed1i l\u01b0\u1ee3ng và t\u1ed1c \u0111\u1ed9 c\u1ee7a v\u1eadt.<br \/>- Trong h\u1ec7 kín, \u0111\u1ed9ng l\u01b0\u1ee3ng c\u1ee7a h\u1ec7 \u0111\u01b0\u1ee3c b\u1ea3o toàn.<\/p>","answer":"<p>A, B, D – \u0111úng.<br \/>C – sai, \u0111\u1ed9ng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t v\u1eadt có \u0111\u1ed9 l\u1edbn b\u1eb1ng tích kh\u1ed1i l\u01b0\u1ee3ng và t\u1ed1c \u0111\u1ed9 c\u1ee7a v\u1eadt.<br \/>\u0110áp án \u0111úng: <span style=\"color:#2980b9;\"><strong>C<\/strong>. \u0110\u1ed9ng l\u01b0\u1ee3ng c\u1ee7a m\u1ed9t v\u1eadt có \u0111\u1ed9 l\u1edbn b\u1eb1ng tích kh\u1ed1i l\u01b0\u1ee3ng và bình ph\u01b0\u01a1ng v\u1eadn t\u1ed1c.<\/span><\/p>","type":"choose","extra_type":"classic","user_id":"149","test":"0","date":"2023-02-11 08:01:07","option_type":"txt","len":3}]}