G. Example: A satellite of mass 100kg is in orbit around the Moon at an altitude of 100km above its surface. What force does the Moon exert on
the satellite? What force does the satellite exert on the Moon?

What happens to an isotope during radioactive decay?

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.

Convection currents are caused by differences in what two things?