Question 13 50 mm Two small plastic balls are hanging on silk threads, 50 mm from each other, as indicated in the sketch. The charges on the balls are indicated. +0,0003 C -0,002 C 13.1 Calculate the magnitude of the force that the balls initially exert on each other. 13.2 State and explain what will happen if the two balls are released and are then free to move. 13.3 Determine the magnitude of the force that the balls exert on each other when they come to a standstill again.

Question 13 50 mm Two small plastic balls are hanging on silk threads, 50 mm from each other, as indicated in the sketch. The charges on the balls are indicated. +0,0003 C -0,002 C 13.1 Calculate the magnitude of the force that the balls initially exert on each other. 13.2 State and explain what will happen if the two balls are released and are then free to move. 13.3 Determine the magnitude of the force that the balls exert on each other when they come to a standstill again.