Two charges separated by a distance of 1 m exert a 1.0N force on each other. If the changes are pulled to a 3-m separation distance, the force on each charge will be

2 answers

F₁=k•q₁•q₂/r₁²,
F₂=k•q₁•q₂/r₂²,
F₁/F₂=k•q₁•q₂•r₂² / k•q₁•q₂•r₁²,
F₂= F₁• r₁²/r ₂².
0.11 N