1. In the famous Joule experiment, a mass attached to a pulley system falls a height h and powers a stirrer that mechanically agitates an insulated container of water. It is found that the temperature increase in the water Δ is proportional to h. Is there any heat in this process? Explain with an analysis of the first law.
2. Which of the following processes are possible? Explain.
a) a quasi-static but irreversible process
b) a reversible isochoric process
c) an irreversible, adiabatic process
d) an irreversible, isentropic process