... m ng m t, t l nl /6 11 W 12 11 0 V Bi t t ng c m C 60 rad/s i g i qua ns D 50 rad/s Trang 2/8 229 A B C D = 600 A 10 m s2 B x1 = A1 m s2 C 10 m s2 D 10 m s2 =5 Amax A B 10 cm C cm D A T/2 ... A 10 B C A t C A D 10 B D i = 4cos t (A) c A A Trang 3/8 229 ? a L/C = R2, LC A 73 B C 13 D 21 67 1 A 3,2 cm B 8,0 cm C 32 cm D 16 cm A B A 1, 42 cm B 2 ,14 cm C 2,07 cm D 1, 03 cm = 8L1 ... q2 q1/q2 A 81/ 44 1 B 44/ 81 2, b C 44/ 81 = 0,8T0 = 1, 2T0 D 81/ 44 A 0 0 A T C T0 T0 T B T D T0 T0 T g sai? sai? Trang 5/8 229 Ch g A 0 ,1 J B 0,4 J C 0,6 J D 0,2 J ng? 2 A 8,2 cm B 8,7 cm C 1, 2...