Asked by Dar

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

Answers

Answered by drwls
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
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