B\u00e0i 1 (trang 187 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0H\u00e3y ch\u1ecdn c\u00e2u \u0111\u00fang.<\/span><\/p>\n N\u0103ng l\u01b0\u1ee3ng li\u00ean k\u1ebft ri\u00eang.<\/p>\n A. Gi\u1ed1ng nhau v\u1edbi m\u1ecdi h\u1ea1t nh\u00e2n.<\/p>\n B. L\u1edbn nh\u1ea5t v\u1edbi c\u00e1c h\u1ea1t nh\u00e2n nh\u1eb9.<\/p>\n C. l\u1edbn nh\u1ea5t v\u1edbi c\u00e1c h\u1ea1t nh\u00e2n trung b\u00ecnh<\/p>\n D. L\u1edbn nh\u1ea5t v\u1edbi c\u00e1c h\u1ea1t nh\u00e2n n\u1eb7ng.<\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n Ch\u1ecdn \u0111\u00e1p \u00e1n C.<\/p>\n N\u0103ng l\u01b0\u1ee3ng li\u00ean k\u1ebft ri\u00eang l\u1edbn nh\u1ea5t v\u1edbi c\u00e1c h\u1ea1t nh\u00e2n trung b\u00ecnh l\u00e0 nh\u1eefng h\u1ea1t nh\u00e2n n\u1eb1m \u1edf kho\u1ea3ng gi\u1eefa c\u1ee7a b\u1ea3ng tu\u1ea7n ho\u00e0n \u1ee9ng v\u1edbi: 50 < A < 95.<\/p>\n B\u00e0i 2 (trang 187 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0H\u00e3y ch\u1ecdn c\u00e2u \u0111\u00fang.<\/span><\/p>\n B\u1ea3n ch\u1ea5t l\u1ef1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c nuclon trong h\u1ea1t nh\u00e2n l\u00e0:<\/p>\n A. L\u1ef1c t\u0129nh \u0111i\u1ec7n<\/p>\n B. L\u1ef1c h\u1ea5p d\u1eabn.<\/p>\n C. L\u1ef1c \u0111i\u1ec7n t\u1eeb<\/p>\n D. L\u1ef1c t\u01b0\u01a1ng t\u00e1c m\u1ea1nh.<\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n Ch\u1ecdn \u0111\u00e1p \u00e1n D.<\/p>\n B\u1ea3n ch\u1ea5t l\u1ef1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c nuclon trong h\u1ea1t nh\u00e2n l\u00e0 l\u1ef1c t\u01b0\u01a1ng t\u00e1c m\u1ea1nh.<\/p>\n B\u00e0i 3 (trang 187 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0Ph\u1ea1m vi t\u00e1c d\u1ee5ng c\u1ee7a l\u1ef1c t\u01b0\u01a1ng t\u00e1c m\u1ea1nh trong h\u1ea1t nh\u00e2n l\u00e0 bao nhi\u00eau?<\/span><\/p>\n A. 10-13<\/sup>\u00a0cm<\/p>\n B. 10-8<\/sup>\u00a0cm<\/p>\n C. 10-10<\/sup>cm<\/p>\n D. V\u00f4 h\u1ea1n<\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n Ch\u1ecdn \u0111\u00e1p \u00e1n A.<\/p>\n Ph\u1ea1m vi t\u00e1c d\u1ee5ng c\u1ee7a l\u1ef1c t\u01b0\u01a1ng t\u00e1c m\u1ea1nh trong h\u1ea1t nh\u00e2n l\u00e0 10-13<\/sup>cm<\/p>\n B\u00e0i 4 (trang 187 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0H\u1ea1t nh\u00e2n n\u00e0o c\u00f3 n\u0103ng l\u01b0\u1ee3ng li\u00ean k\u1ebft ri\u00eang l\u1edbn nh\u1ea5t?<\/span><\/p>\n A. Heli<\/p>\n B. Cacbon<\/p>\n C. S\u1eaft<\/p>\n D. Urani<\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n Ch\u1ecdn \u0111\u00e1p \u00e1n C.<\/p>\n V\u00ec h\u1ea1t nh\u00e2n Fe c\u00f3 s\u1ed1 kh\u1ed1i l\u01b0\u1ee3ng trung b\u00ecnh 50 < A < 95<\/p>\n B\u00e0i 5 (trang 187 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0N\u0103ng l\u01b0\u1ee3ng li\u00ean k\u1ebft c\u1ee7a<\/span><\/p>\n <\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n N\u0103ng l\u01b0\u1ee3ng li\u00ean k\u1ebft:<\/p>\n <\/p>\n => (10mp<\/sub>\u00a0+ 10mn<\/sub>\u00a0\u2013 mNe<\/sub>)c2 = 0,17245uc2<\/sup><\/p>\n => 10.1,00728u + 10.1,00866u \u2013 mNe<\/sub>\u00a0= 0,17245u<\/p>\n Kh\u1ed1i l\u01b0\u1ee3ng h\u1ea1t nh\u00e2n mNe<\/sub>\u00a0= 19,98695u<\/p>\n <\/p>\n => m = 19,98695u + 10.0,00055u =\u00a019,99245u<\/b><\/p>\n B\u00e0i 6 (trang 187 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0Kh\u1ed1i l\u01b0\u1ee3ng nguy\u00ean t\u1eed c\u1ee7a …<\/span><\/p>\n <\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n <\/p>\n B\u00e0i 7 (trang 187 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0Ho\u00e0n ch\u1ec9nh c\u00e1c ph\u1ea3n \u1ee9ng sau:<\/span><\/p>\n <\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n <\/p>\n \u00c1p d\u1ee5ng \u0111\u1ecbnh lu\u1eadt b\u1ea3o to\u00e0n \u0111i\u1ec7n t\u00edch v\u00e0 b\u1ea3o to\u00e0n s\u1ed1 nuclon<\/p>\n <\/p>\n <\/p>\n B\u00e0i 8 (trang 187 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0Ph\u1ea3n \u1ee9ng:<\/span><\/p>\n <\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n <\/p>\n B\u00e0i 9 (trang 187 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0Ch\u1ecdn c\u00e2u sai: Trong m\u1ed9t ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n, c\u00f3 b\u1ea3o to\u00e0n.<\/span><\/p>\n A. n\u0103ng l\u01b0\u1ee3ng<\/p>\n B. \u0111\u1ed9ng n\u0103ng<\/p>\n C. \u0111\u1ed9ng n\u0103ng<\/p>\n D. \u0111i\u1ec7n t\u00edch<\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n Ch\u1ecdn \u0111\u00e1p \u00e1n C<\/p>\n B\u00e0i 10 (trang 187 SGK V\u1eadt L\u00fd 12):<\/b>\u00a0Ph\u1ea3n \u1ee9ng n\u00e0o sau \u0111\u00e2y thu n\u0103ng l\u01b0\u1ee3ng<\/span><\/p>\n <\/p>\n L\u1eddi gi\u1ea3i:<\/b><\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" B\u00e0i 1 (trang 187 SGK V\u1eadt L\u00fd 12):\u00a0H\u00e3y ch\u1ecdn c\u00e2u \u0111\u00fang. N\u0103ng l\u01b0\u1ee3ng li\u00ean k\u1ebft ri\u00eang. A. Gi\u1ed1ng nhau v\u1edbi m\u1ecdi h\u1ea1t nh\u00e2n. B. L\u1edbn nh\u1ea5t v\u1edbi c\u00e1c h\u1ea1t nh\u00e2n nh\u1eb9. C. l\u1edbn nh\u1ea5t v\u1edbi c\u00e1c h\u1ea1t nh\u00e2n trung b\u00ecnh D. L\u1edbn nh\u1ea5t v\u1edbi c\u00e1c h\u1ea1t nh\u00e2n n\u1eb7ng. L\u1eddi gi\u1ea3i: Ch\u1ecdn \u0111\u00e1p \u00e1n C. N\u0103ng […]<\/p>\n","protected":false},"author":3,"featured_media":24643,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[1303],"tags":[1428,1427],"yoast_head":"\n