An object is transported from the earth to the moon. which statement is true about the object? the object’s mass and weight both change. the object’s weight changes, but its mass stays the same. the object’s mass and weight stay the same. the object’s mass changes, but its weight stays the same.

Arigid tank is divided into two equal parts by a partition. one part of the tank contains 3 kg of compressed liquid water at 400 kpa and 60°c while the other part is evacuated. the partition is now removed, and the water expands to fill the entire tank. determine the entropy change of water during this process, if the final pressure in the tank is 40 kpa. use steam tables.