A diatomic ideal gas undergoes the thermodynamic process shown in the PV diagram of the figure below. Determine whether each of the values AU, Q, and W for the gas is positive, negative, or zero. Hint: The internal energy of a diatomic ideal gas at pressure P and occupying volume V is given by U = PV. AU ---Select--- v O --Select-- W ---Select-- 2P Po Vo 2Vo