termo3

3) An insulated piston-cylinder device contains 5L of saturated liquid water at a constant pressure of 175kPa. Water is stirred by a paddle wheel while a current of 8 A flows for 45min through a resistor placed in the water. If one-half of the liquid is evaporated during this constantpressure process and the paddle-wheel work amounts to 400kJ, determine the voltage of the source. Also, show the process on a Pv diagram with respect to saturation lines