Two charged dust particles exert a force of 5.3 x 10^-2 N on each other. What will be the force if they are moved so they are only one-ninth as far apart?
3 answers
Since electrostatic force is inversely proportional to the square of the separation, if the new distance is one-ninth of the first distance, the new force will be 9^2 = 81 times the original force.
12.5
7.2e-2
3 answers