A well-insulated vertical piston-cylinder device contains air. The diameter of the piston is 8 inches. Atmospheric pressure of 14.7 lbf/in2 acts on the outside the cylinder and the piston mass is 165 Ibm. An electric resistor within the cylinder receives a current of 1 A from an external battery of 10 V for a duration of 60 minutes causing the piston to move upwards by 9.85 inches. The acceleration due to gravity g = 32.2 ft/s2. State all your assumptions Draw the system sketch Draw the process for air on the P-v diagram and label the initial state as 1 and the final state as 2; Calculate the pressure of air inside the cylinder before the piston moves, in lbf/in2 and psi. Calculate the work due to expansion of air in the cylinder, in Btu; Indicate whether the work is done by the system or on the system used for part (e); Determine the electrical work, in Btu; Calculate the change in internal energy of air, in Btu.