3. For a CAES plant process. If the temperair is stored in an underground cavern. It obeys the adiabatic temperature if we the air in the cavern at 1atm is 20C. Calculate raise in 4. Given a rotor in we increase the pressure to 100atm. The volume of the tank is fixed. amount of 5kg, a diameter of 0.5m, and spinning at 10,000rpm, what is the amount of energy stored? 5. In a hydropower plant, the flow rate of the water through a penstock is 500m3/sec with an effective head of 100m. How much power is generated if the turbine generator efficiency is 75%