Answr Key for test 1(22,23,24)

0) 2.25x10⁹ N, repulsive

1) negative, 2

2) A

3) B

4) A

5) 0.0030 N,0.0017 N

6) in the positive-x direction

7) C

8) D

9) C

10) B

11) D

12) B

13) zero,zero,+5C,-5C,+8C,-5C

14) (kqQ)/(R+h)²

15) I will go over this in class if you remind me!

16) a) 0,0,kQ/r² b) kq/r², 0, k(Q-q)/r².