select the correct answer. given the law of conservation of energy, what happens when a 200°c iron bar is…

select the correct answer. given the law of conservation of energy, what happens when a 200°c iron bar is placed in thermal contact with a 30°c block of wood? a. energy leaves the iron bar and enters the wood until the temperatures are equal. b. energy leaves the wood and enters the iron bar until the temperatures are equal. c. all the energy from the iron bar is transferred to the wood. d. all the energy from the wood is transferred to the iron bar.

select the correct answer. given the law of conservation of energy, what happens when a 200°c iron bar is placed in thermal contact with a 30°c block of wood? a. energy leaves the iron bar and enters the wood until the temperatures are equal. b. energy leaves the wood and enters the iron bar until the temperatures are equal. c. all the energy from the iron bar is transferred to the wood. d. all the energy from the wood is transferred to the iron bar.

Answer

Brief Explanations:

Heat transfer occurs from a higher - temperature object to a lower - temperature object until thermal equilibrium is reached. The iron bar is at a higher temperature ($200^{\circ}C$) than the wood ($30^{\circ}C$), so energy (in the form of heat) will leave the iron bar and enter the wood until their temperatures are equal. Not all the energy from the iron bar will be transferred as they will reach an intermediate equilibrium temperature.

Answer:

A. Energy leaves the iron bar and enters the wood until the temperatures are equal.