A pendulum is 0.75 meters long and has a period of 4.17 seconds. The Pendulum is on an unknown planet. What is the acceleration of gravity of the Unknown Planet?​

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.

Where do magnetic lines of force enter earth?

Is there a point between a 10 nc charge and a 20 nc charge at which the electric field is zero?