A moving cart with a mass of 7.1 kg hits a spring, traveling at 20.7 m/s at the time of contact. At the instant the cart is motionless, how much energy is converted into elastic
energy?

Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same

An electric current is flowing through the cord below.what will happen to this current if a magnet is brought near the cord? a. the electric current will stop flowing. b. it will exert a force on the voltage. c. the resistance of the wire will decrease. d. it will exert a force on the electric current.

Within a pendulum, as potential energy decreases, energy increases. a. heat b. kinetic c. frictional d. gravitational