A piston/cylinder maintaining constant pressure contains 0.5 kg water at room temperature, 20?C, 100 kPa. An electric heater of 500 W heats the water to 500?C. Assume no heat losses to the ambient air and plot the temperature and total accumulated entropy production as a function of time. Investigate the first part of the process, namely, bringing the water to the boiling point, by measuring it in your kitchen and knowing the rate of power added.