Ngày tải lên :
12/07/2014, 10:29
... = 0, 4àm v = 0 ,5 m thỡ tc ban u cc i ca electron bn b mt catt khỏc ln Giỏ tr ca A 0 ,51 5m B 0 ,54 5m C 0 ,59 5m D 0 ,58 5m Cõu 12 Mt cht im dao ng iu ho vi phng trỡnh: x = 10cos ( 5t / 3) cm Xỏc ... gii hn quang in Ln lt chiu ti bờ mt catt hai bc x cú bc súng = 0, 4àm v = 0 ,5 m thỡ tc ban u cc i ca electron bn b mt catt khỏc ln Giỏ tr ca A 0 ,51 5m B 0 ,54 5m C 0 ,59 5m D 0 ,58 5m Hng dn gii: hc ... 1B,2D,3B,4A,5C,6D,7D,8C,9D,10D,11B,12B,13B,14A,15C,16A,17D,18B,19B,20D,21A,22A,23C, 24C,25A,26C,27B,28A,29D,30B,31D,32C,33B,34C,35B,36B,37B,38B,39D,40A, 41D,42B,43D,44C,45D,46A,47A,48B,49A ,50 D, 51 A ,52 C ,53 A ,54 C ,55 D ,56 C ,57 B ,58 D ,59 A,60D...