An iron ball at 40°C is dropped in a mug containing water at 40°C. The heat will….

Q. An iron ball at 40°C is dropped in a mug containing water at 40°C. The heat will….

A.            not flow from iron ball to water or from water to iron ball.

B.            flow from iron ball to water.

C.            flow from water to iron ball.

D.            none of the above

Answer: not flow from iron ball to water or from water to iron ball.