Two charges q1 and q2 are separated by a distance d and exert a force F on each other. What is the new force F ′ , if charge 1 is increased to q ′1 = 5 q1, charge 2 is decreased to q ′2 = q2 / 2, and the distance is decreased to d ′ = d / 2? Choose one.
1. F ′ = 5/2 F
2. F ′ = 5/4 F
3. F ′ = 20 F
4. F ′ = 25/4 F
5. F ′ = 50 F
6. F ′ = 25/2 F
7. F ′ = 100 F
8. F ′ = 5 F
9. F ′ = 25 F
10. F ' = 10 F
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