The force between two charged balls is 6.0 x 10-6 N. If we double the distance and the charges on one ball, what's the
new force between the two charged balls? k= 9.0 x 10°

An athlete is holding 24 lb of weights at a height of 6 inches above the stack as shown. to lower the weights, she applies a constant force of 5 lb to the handle. determine the velocity of the weights immediately before they hit the stack.

The field between two charged parallel plates is kept constant. if the two plates are brought closer together, the potential difference between the two plates either a) decrease b) does not change c) increase?

At what time will the interfering waves have an amplitudeof zero?