(Solved): HW #3-2 An insulated piston-cylinder device contains \( 5 \mathrm{~L} \) of saturated liquid water ...

HW #3-2 An insulated piston-cylinder device contains \( 5 \mathrm{~L} \) of saturated liquid water at a constant pressure of \( 150 \mathrm{kPa} \). Water is stirred by a paddle wheel while a current of \( 8 \mathrm{~A} \) flows for \( 1 \mathrm{hr} \) through a resistor placed in the water. If one-half of the liquid is evaporated during this constant-pressure process and the paddle-wheel work amounts to \( 400 \mathrm{~kJ} \), determine the voltage of the source. Also, show the process on a P-v diagram with respect to saturation lines