Ngày tải lên :
18/10/2014, 21:00
... =1,67.10 -27 kg 45A ae = 1 ,21 .1014 m/s2 ; ap = 0,68.1 011 m/s2 B ae = - 2 ,11. 1014 m/s2 ; ap = 1,14.1 011 m/s2 14 11 46C ae = 2 ,11. 10 m/s ; ap = 0,68.10 m/s D ae = -2 ,11. 10 12 m/s2 ; ap = 0,68.109 m/s2 4718 ... 10B 11C 12D 1365 Chn cõu tr li ỳng 14A 15B 16C 17D 1866 Chn cõu tr li ỳng 19A 20 B 21 C 22 D 23 67 Chn cõu tr li ỳng 24 A B C D 25 68 Chn cõu tr li ỳng 26 A B C D 27 69 Chn cõu tr li ỳng 28 A B C D 29 70 ... = 2, 1 , U1 = 0 ,21 V B R1 = 21 , U1 = 2, 1V 20 C R1 = 21 , U1 = 0 ,21 V D R1 = 2, 1 , U1 = 21 V 21 48 : ( 11. 29 / 69 / PPGTN VL 11 ) Chn cõu tr li NG Mch in gm t in C mc song song in tr R = 4,5 22 ,...