Answers to even numbered “suggested problems” for homework #1 - #3; answers to odd numbered problems are in the back of your textbook.

18.14 (a) 1.44 x 10^4 N, an attractive force; (b) 3.24 x 10^3 N, a repulsive force

18.16 +2.0 micro-C

19.14 +45 V, point B is at higher potential

20.2 (a) 0.036 C; (b) 2.3 x 10^17 electrons

20.24 5 million dollars

20.40 9.0 V

20.48 446 ohms

20.86 (a) 12.0 microFarads; (b) 0.00030 C

20.102 3.5 x 10^4 A