Lực cản của nước - Bài tập nâng cao

Home Lớp 6 Khoa học tự nhiên 6 - Sách kết nối tri thức Bài 45: Lực cản của nướcBài tập nâng cao

{"common":{"save":0,"post_id":"5114","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"10919","post_id":"5114","mon_id":"1158149","chapter_id":"1158295","question":"Ch\u1ecdn phát bi\u1ec3u \u0111úng<\/b>?<\/p>","options":["A. <\/strong>Các ch\u1ea5t l\u1ecfng khác nhau tác d\u1ee5ng l\u1ef1c c\u1ea3n nh\u01b0 nhau lên cùng m\u1ed9t v\u1eadt","B. <\/strong>L\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc l\u1ecdc l\u1edbn h\u01a1n l\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc có pha mu\u1ed1i","C. <\/strong>Các ch\u1ea5t l\u1ecfng khác nhau tác d\u1ee5ng l\u1ef1c c\u1ea3n khác nhau lên cùng m\u1ed9t v\u1eadt","D.<\/strong> L\u1ef1c c\u1ea3n c\u1ee7a không khí l\u1edbn h\u01a1n l\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc"],"correct":"3","level":"3","hint":"","answer":"A. <\/strong>Các ch\u1ea5t l\u1ecfng khác nhau tác d\u1ee5ng l\u1ef1c c\u1ea3n nh\u01b0 nhau<\/strong><\/span> lên cùng m\u1ed9t v\u1eadt      Sai<\/span> vì các ch\u1ea5t l\u1ecfng khác nhau tác d\u1ee5ng l\u1ef1c c\u1ea3n khác nhau<\/strong> lên cùng m\u1ed9t v\u1eadt<\/p>B. <\/strong>L\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc l\u1ecdc l\u1edbn h\u01a1n<\/strong><\/span> l\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc có pha mu\u1ed1i                   Sai<\/span> vì l\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc l\u1ecdc nh\u1ecf h\u01a1n <\/strong>l\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc có pha mu\u1ed1i<\/p>C. <\/strong>Các ch\u1ea5t l\u1ecfng khác nhau tác d\u1ee5ng l\u1ef1c c\u1ea3n khác nhau lên cùng m\u1ed9t v\u1eadt      \u0110úng<\/span><\/p>D.<\/strong> L\u1ef1c c\u1ea3n c\u1ee7a không khí l\u1edbn h\u01a1<\/strong><\/span>n l\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc                                      Sai<\/span> vì l\u1ef1c c\u1ea3n c\u1ee7a không khí l\u1edbn h\u01a1n<\/strong> l\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc <\/p>\u0110áp án \u0111úng là  C. Các ch\u1ea5t l\u1ecfng khác nhau tác d\u1ee5ng l\u1ef1c c\u1ea3n khác nhau lên cùng m\u1ed9t v\u1eadt<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2021-11-05 11:53:46","option_type":"txt","len":3},{"id":"10922","post_id":"5114","mon_id":"1158149","chapter_id":"1158295","question":"Ch\u1ecdn câu \u0111úng.<\/p>","options":["A. <\/strong>V\u1eadt di chuy\u1ec3n càng nhanh thì ch\u1ecbu l\u1ef1c c\u1ea3n c\u1ee7a không khí càng nh\u1ecf","B.<\/strong> V\u1eadt di chuy\u1ec3n trong n\u01b0\u1edbc d\u1ec5 dàng h\u01a1n so v\u1edbi khi di chuy\u1ec3n trên c\u1ea1n","C.<\/strong> L\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc càng m\u1ea1nh khi di\u1ec7n tích m\u1eb7t c\u1ea3n càng nh\u1ecf","D.<\/strong> L\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc càng m\u1ea1nh khi di\u1ec7n tích m\u1eb7t c\u1ea3n càng l\u1edbn"],"correct":"4","level":"3","hint":"","answer":"A. <\/strong>V\u1eadt di chuy\u1ec3n càng nhanh thì ch\u1ecbu l\u1ef1c c\u1ea3n c\u1ee7a không khí càng nh\u1ecf<\/strong>        Sai<\/span> vì v\u1eadt di chuy\u1ec3n càng nhanh thì ch\u1ecbu l\u1ef1c c\u1ea3n c\u1ee7a không khí càng l\u1edbn<\/strong><\/p>B.<\/strong> V\u1eadt di chuy\u1ec3n trong n\u01b0\u1edbc d\u1ec5 dàng<\/strong> h\u01a1n so v\u1edbi khi di chuy\u1ec3n trên c\u1ea1n      Sai<\/span> vì v\u1eadt di chuy\u1ec3n trong n\u01b0\u1edbc khó kh\u0103n<\/strong> h\u01a1n so v\u1edbi khi di chuy\u1ec3n trên c\u1ea1n<\/p>C.<\/strong> L\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc càng m\u1ea1nh khi di\u1ec7n tích m\u1eb7t c\u1ea3n càng nh\u1ecf      <\/strong>           Sai<\/span> vì l\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc càng m\u1ea1nh khi di\u1ec7n tích m\u1eb7t c\u1ea3n càng l\u1edbn<\/strong><\/p>D.<\/strong> L\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc càng m\u1ea1nh khi di\u1ec7n tích m\u1eb7t c\u1ea3n càng l\u1edbn                  \u0110úng<\/span><\/p>\u0110áp án \u0111úng là  D. L\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc càng m\u1ea1nh khi di\u1ec7n tích m\u1eb7t c\u1ea3n càng l\u1edbn<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2021-11-05 12:08:40","option_type":"txt","len":3},{"id":"10924","post_id":"5114","mon_id":"1158149","chapter_id":"1158295","question":"Ch\u1ecdn câu sai<\/strong>.<\/p>","options":["A. <\/strong>Di\u1ec7n tích m\u1eb7t ti\u1ebfp xúc v\u1edbi không khí càng l\u1edbn thì ch\u1ecbu l\u1ef1c c\u1ea3n càng l\u1edbn","B.<\/strong> Di\u1ec7n tích m\u1eb7t ti\u1ebfp xúc v\u1edbi n\u01b0\u1edbc càng l\u1edbn thì ch\u1ecbu l\u1ef1c c\u1ea3n càng l\u1edbn","C.<\/strong> \u0110\u1ed9 l\u1edbn l\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc ch\u1ec9 ph\u1ee5 thu\u1ed9c vào di\u1ec7n tích m\u1eb7t c\u1ea3n ","D.<\/strong> \u0110\u1ed9 l\u1edbn l\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc ph\u1ee5 thu\u1ed9c vào di\u1ec7n tích m\u1eb7t c\u1ea3n"],"correct":"3","level":"3","hint":"","answer":"A. <\/strong>Di\u1ec7n tích m\u1eb7t ti\u1ebfp xúc v\u1edbi không khí càng l\u1edbn thì ch\u1ecbu l\u1ef1c c\u1ea3n càng l\u1edbn   \u0110úng<\/span><\/p>B.<\/strong> Di\u1ec7n tích m\u1eb7t ti\u1ebfp xúc v\u1edbi n\u01b0\u1edbc càng l\u1edbn thì ch\u1ecbu l\u1ef1c c\u1ea3n càng l\u1edbn          \u0110úng<\/span><\/p>C.<\/strong> \u0110\u1ed9 l\u1edbn l\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc ch\u1ec9<\/span> ph\u1ee5 thu\u1ed9c vào di\u1ec7n tích m\u1eb7t c\u1ea3n                  Sai<\/span> vì \u0111\u1ed9 l\u1edbn l\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc ph\u1ee5 thu\u1ed9c vào nhi\u1ec1u y\u1ebfu t\u1ed1, trong \u0111ó có di\u1ec7n tích m\u1eb7t c\u1ea3n<\/p>D.<\/strong> \u0110\u1ed9 l\u1edbn l\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc ph\u1ee5 thu\u1ed9c vào di\u1ec7n tích m\u1eb7t c\u1ea3n                        \u0110úng<\/span><\/p>\u0110áp án là  C. \u0110\u1ed9 l\u1edbn l\u1ef1c c\u1ea3n c\u1ee7a n\u01b0\u1edbc ch\u1ec9 ph\u1ee5 thu\u1ed9c vào di\u1ec7n tích m\u1eb7t c\u1ea3n<\/strong><\/span><\/p>","type":"choose","extra_type":"classic","time":"0","user_id":"131","test":"0","date":"2021-11-05 12:16:35","option_type":"txt","len":3}]}