Air that initially occupies 0.25 m3 at a gauge pressure of 110 kpa is expanded isothermally to a pressure of 101.3 kpa and then cooled at constant pressure until it reaches its initial volume. compute the work done by the air. (gauge pressure is the difference between the actual pressure and atmospheric pressure.)

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.

The energy produced as a result of this flow of electrons from atom to atom is called

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length (in m) of a column of water 1.45 km high for a temperature increase of 1.12°c. assume the column is not free to expand sideways. as a model of the ocean, that is a reasonable approximation, as only parts of the ocean very close to