Giancoli Ch. 16 – p. 466-468, Problems #39, 41, 52-56, 65, 68 key

39) 1/4

41a) 7.49 x 106 m/s

41b) acceleration caused by the electric field is 2.60 x 1014 times larger than acceleration caused by gravity

52) 5.08 m

53) fraction lost = 2.9 x 10-10

54) 1.02 x 10-7 N/C up

55) -6.8 x 105 C

56a) 2.6 x 1013 m/s2 up

56b) 1.4 x 1010 m/s2 down

56c) electron: 2.7 x 1012; proton: 1.5 x 109

65) 5 x 10-9 C, about 3 billion electrons

68) 1.06 x 107 N/C