The force between two charged balls is 6.0 × 10-6 N. If we double the distance and the charges on one ball, whats the new force between the two charged balls? k = 9.0 × 109
2.0 × 10-6 N
3.0 × 10-6 N
4.0 × 10-6 N
5.0 × 10-6 N
6.0 × 10-6 N