According to the inverse square law that applies to electrostatic forces, the separation distance must decrease by a factor sqrt2 if the force is to increase by a factor of two.
18/sqrt2 = 12.7 cm
Two charged spheres are 18.0 cm apart. They are moved, and the force on each of them is found to have been doubled. How far apart are they now?
______cm
1 answer
1 answer