Two balloons having the same charge of 1.2 × 10-6 coulombs each are kept 5.0 × 10-1 meters apart. what is the magnitude of the repulsive force between them? (k = 9.0 × 109 newton·meter2/coulombs2)
1.2 × 10-2 newtons
3.2 × 10-3 newtons
6.5 × 10-3 newtons
3.0 × 10-4 newtons
5.2 × 10-2 newtons

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