If 10 j of work (electric potential energy) is used in pushing 2 c of charge into an electric field, its electric potential relative to its starting position is a. less than 5 v c. more than 20 v. d. 20 v

What happens to light waves from a star as the star moves away from earth?

Asmall object with mass 0.200 kg swings back and forth on the lower end of a light rope that is 3.00 m long. the upper end of the rope is attached to the ceiling. as the object swings through its lowest position, where the rope is vertical, the speed of the object is 5.80 m/s. at this point in the motion, what is the tension in the rope? (use g = 9.80 m/s2.)

If the spring constant k of a pogo stick is 3500 n m and the weight of the person on the pogo stick is 700 n, how much is the spring in the botom of the pogo stick compressed?