The standard for entropy is defined by a perfectly ordered at 0 k.

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.

How many neutrons does plutonium -196 with an atomic number of 78.

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?