A horizontal piston/cylinder arrangement is placed ina constant - temperature bath. The piston slides in the cylinder with negligible friction, and an exiemal force holds it in place against an initial gas pressure of 14 bar. The initial gas volume is 0.03m3. The external force on the piston is reduced gradually, and the gas expands isothermally as its volume doubles. If the volume of the gas is related to its pressure so the product PV is constant. What is the work done by the gas in moving the external foree? How much work would be done if the external force were suddenly reduced to half its initial value instead of being gradually reduced