In which position is it most likely that the spring has lost its elastic potential energy? A. W
B. X
C. Y
D. Z

Awind turbine is rotating counterclockwise at 0.5 rev/s and slows to a stop in 10 s. its blades are 20 m in length. (a) what is the angular acceleration of the turbine? (b) what is the centripetal acceleration of the tip of the blades at t=0s? (c) what is the magnitude and direction of the total linear acceleration of the tip of the blades at t=0s?

Two positive charges are equal. which has more electric potential energy?

Look at the electroscope, describe how you can cause the two leaves at the bottom to repel each other and stay that way