Which of these represents a scenario where gravitational potential energy increases? a. A hockey puck is hit across the ice b. A rock falls from a cliff c. An elevator goes from the 4 th floor to the 10 th floor d. A bucket of water at the top of a building is poured out

In the 1980's, congress authorized the u.s. department of energy to build the wipp facility in the chicuahuan desert in new mexico. what is the purpose of wipp?

Ablock of mass m = 2.5 kg is attached to a spring with spring constant k = 790 n/m. it is initially at rest on an inclined plane that is at an angle of 28 degrees with respect to the horizontal, and the coefficient of kinetic friction between the block and the plane is k = 0.14. in the initial position, where the spring is compressed by a distance of a = 0.18 m, the mass is at its lowest position and the spring is compressed the maximum amount. take the initial gravitational energy of the block as zero. b) if the spring pushes the block up the incline, what distance, l, in meters will the block travel before coming to rest? the spring remains attached to both the block and the fixed wall throughout its motion.

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects