Identify the TRUE statements about energy. A; Energy can transform from electrical energy to heat.

B; Energy can be created and destroyed.

C; Higher potential energy can change into higher kinetic energy.

D; Energy changes are 100% efficient.

If forces acting on an object are unbalanced, which factors may result fron an unbalanced force? check all that apply

"an open tank has the shape of a right circular cone. the tank is 6 feet across the top and 5 feet high. how much work is done in emptying the tank by pumping the water over the top edge? note: the density of water is 62.4 lbs per cubic foot."

Suppose while hauling rocks, you accidentally drop one. it breaks apart in flat, planar sections. what type of rock did you just drop? 20 points