C\u00e2u 7:<\/b>\u00a0H\u1ec7 s\u1ed1 n\u01a1tron<\/p>\n

A. t\u1ec9 l\u1ec7 v\u1edbi c\u00f4ng su\u1ea5t t\u1ecfa nhi\u1ec7t c\u1ee7a l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n<\/p>\n

B. trong bom nguy\u00ean t\u1eed v\u00e0 trong l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n khi ho\u1ea1t \u0111\u1ed9ng \u0111\u1ec1u l\u1edbn h\u01a1n 1<\/p>\n

C. trong bom nguy\u00ean t\u1eed v\u00e0 trong l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n khi ho\u1ea1t \u0111\u1ed9ng c\u00f3 gi\u00e1 tr\u1ecb nh\u1ecf h\u01a1n 1<\/p>\n

D. l\u1edbn h\u01a1n 1 trong bom nguy\u00ean t\u1eed v\u00e0 b\u1eb1ng 1 trong l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n.<\/p>\n

C\u00e2u 8:<\/b>\u00a0Trong ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch urani\u00a0^{235<\/sup>U, n\u0103ng l\u01b0\u1ee3ng trung b\u00ecnh t\u1ecfa ra khi m\u1ed9t h\u1ea1t nh\u00e2n b\u1ecb ph\u00e2n h\u1ea1ch l\u00e0 200 MeV. Khi 1 kg\u00a0235<\/sup>U ph\u00e2n h\u1ea1ch ho\u00e0n to\u00e0n th\u00ec t\u1ecfa ra n\u0103ng l\u01b0\u1ee3ng l\u00e0<\/p>\n}

A. 8,21.10^{13<\/sup>\u00a0J\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B. 4,11.1013<\/sup>\u00a0J<\/p>\n}

C. 5,25.10^{13<\/sup>\u00a0J\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D. 6,23.1021<\/sup>\u00a0J<\/p>\n}

C\u00e2u 9:<\/b>\u00a0Trong ph\u1ea3n \u1ee9ng v\u1ee1 h\u1ea1t nh\u00e2n urani\u00a0^{235<\/sup>U, n\u0103ng l\u01b0\u1ee3ng trung b\u00ecnh t\u1ecfa ra trong m\u1ed7i ph\u00e2n h\u1ea1ch l\u00e0 E = 200 MeV. Bi\u1ebft s\u1ed1 Av\u00f4ga\u0111r\u00f4 N_{A<\/sub>=6,022.1023<\/sup>\u00a0mol-1<\/sup>. M\u1ed9t nh\u00e0 m\u00e1y \u0111i\u1ec7n nguy\u00ean t\u1eed c\u00f3 c\u00f4ng su\u1ea5t 5000 MW, hi\u1ec7u su\u1ea5t 25%, l\u01b0\u1ee3ng nhi\u00ean li\u1ec7u urani nh\u00e0 m\u00e1y ti\u00eau th\u1ee5 h\u00e0ng n\u0103m l\u00e0<\/p>\n}}

A. 3640 kg\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B. 3860 kg<\/p>\n

C. 7694 kg\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D. 2675 kg<\/p>\n

C\u00e2u 10:<\/b>\u00a0M\u1ed9t ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch :\u00a0_{92<\/sub>^{235<\/sup>U+0<\/sub>1<\/sup>n\u219241<\/sub>93<\/sup>Nb+58<\/sub>140<\/sup>Ce+30<\/sub>1<\/sup>n+70<\/sub>1<\/sup>e. Bi\u1ebft n\u0103ng l\u01b0\u1ee3ng li\u00ean k\u1ebft ri\u00eang c\u1ee7a\u00a0235<\/sup>U ;\u00a093<\/sup>Nb ;\u00a0140<\/sup>Ce l\u1ea7n l\u01b0\u1ee3t l\u00e0 7,7 MeV ; 8,7 MeV ; 8,45 MeV. N\u0103ng l\u01b0\u1ee3ng t\u1ecfa ra trong ph\u1ea3n \u1ee9ng l\u00e0<\/p>\n}}

A. 132,6 MeV\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B. 182,6 MeV<\/p>\n

C. 168,2 MeV\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D. 86,6 MeV<\/p>\n

C\u00e2u 11:<\/b>\u00a0M\u1ed9t ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ea1ch :\u00a0_{0<\/sub>^{1<\/sup>n+92<\/sub>235<\/sup>U\u219253<\/sub>139<\/sup>I+39<\/sub>94<\/sup>Y+30<\/sub>1<\/sup>n. Bi\u1ebft c\u00e1c kh\u1ed1i l\u01b0\u1ee3ng :\u00a0235<\/sup>U = 234,99332 u;\u00a0139<\/sup>I = 138,897000 u ;\u00a094<\/sup>Y = 93,89014 u ; 1 u = 931,5 MeV; mn<\/sub>\u00a0= 1,00866 u. N\u0103ng l\u01b0\u1ee3ng t\u1ecfa ra kho ph\u00e2n h\u1ea1ch m\u1ed9t h\u1ea1t nh\u00e2n\u00a0235<\/sup>U l\u00e0<\/p>\n}}

A. 168,752 MeV\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0B. 175,923 MeV<\/p>\n

C. 182,157 MeV\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0D. 195,496 MeV<\/p>\n

H\u01b0\u1edbng d\u1eabn gi\u1ea3i v\u00e0 \u0111\u00e1p \u00e1n<\/b><\/p>\n\n\n\n\n

C\u00e2u<\/td>\n	7<\/td>\n	8<\/td>\n	9<\/td>\n	10<\/td>\n	11<\/td>\n<\/tr>\n
\u0110\u00e1p \u00e1n<\/td>\n	D<\/td>\n	A<\/td>\n	C<\/td>\n	B<\/td>\n	B<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n C\u00e2u 8:<\/b>\u00a0A<\/p>\n <\/p>\n C\u00e2u 9:<\/b>\u00a0C<\/p>\n <\/p>\n C\u00e2u 10:<\/b>\u00a0B<\/p>\n N\u0103ng l\u01b0\u1ee3ng t\u1ecfa ra b\u1eb1ng hi\u1ec7u s\u1ed1 n\u0103ng l\u01b0\u1ee3ng li\u00ean k\u1ebft c\u1ee7a c\u00e1c h\u1ea1t tr\u01b0\u1edbc v\u00e0 sau ph\u1ea3n \u1ee9ng W = 93.8,7 + 140.8,45 \u2013 235.7,7 = 182,6 MeV.<\/p>\n","protected":false},"excerpt":{"rendered":" C\u00e2u 7:\u00a0H\u1ec7 s\u1ed1 n\u01a1tron A. t\u1ec9 l\u1ec7 v\u1edbi c\u00f4ng su\u1ea5t t\u1ecfa nhi\u1ec7t c\u1ee7a l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n B. trong bom nguy\u00ean t\u1eed v\u00e0 trong l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n khi ho\u1ea1t \u0111\u1ed9ng \u0111\u1ec1u l\u1edbn h\u01a1n 1 C. trong bom nguy\u00ean t\u1eed v\u00e0 trong l\u00f2 ph\u1ea3n \u1ee9ng h\u1ea1t nh\u00e2n khi ho\u1ea1t \u0111\u1ed9ng c\u00f3 gi\u00e1 tr\u1ecb […]<\/p>\n","protected":false},"author":3,"featured_media":25738,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"tdm_status":"","tdm_grid_status":""},"categories":[158],"tags":[1443,1442],"yoast_head":"\n