How much power was used if 10 Joules of work were done in 2 seconds?

When an object moves in uniform circular motion, the direction of its acceleration is a) in the same direction as its velocity vector. b) in the opposite direction of its velocity vector c) is directed toward the center of its circular path. d) is directed away from the center of its circular path. e) depends on the speed of the object.

What is the force that opposes motion and works against the downward pull? a) friction b) gravity c) weight d) acceleration

How does changing the frequency affect the energy of the wave?