If you leave a wire connected to a battery for a long period of time the wire becomes hot. explain why.

If you were to drop a rock from a tall building, assuming that it had not yet hit the ground, and neglecting air resistance. what is its vertical displacement (in m) after 6 s?

Oxygen undergoes an isentropic expansion from 120 degree c and 280 kpa absolute to 140 kpa absolute. determine the final temperature of the oxygen and the amount of work per kg of o_2 produced in the process if it is adiabatic.

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island