(II) A Carnot engine performs work at the rate of 520 kWwith an input of 950 kcal of heat per second. If the temperature of the heat source is 520°C, at what temperatureis the waste heat exhausted?

cyclic processes completely characterized byeach of the following net energy inputs and outputs.In each case, the energy transfers listed are the onlyones occurring. Classify each process as (a) possible,(b) impossible according to the first law of thermodynamics,(c) impossible according to the second law ofthermodynamics, or (d) impossible according to boththe first and second laws. (i) Input is 5 J of work, andoutput is 4 J of work. (ii) Input is 5 J of work, and outputis 5 J of energy transferred by heat. (iii) Input is5 J of energy transferred by electrical transmission, andoutput is 6 J of work. (iv) Input is 5 J of energy transferredby heat, and output is 5 J of energy transferred

(1) A thermodynamic cycle is a process, in which the system starts from initial state, goes through another state and comes back to the initial state. For the work done to the system W and heat received by the system Q, prove that W = - = -Q.

(a) Calculate the change in entropy when a 0.125-kg chunk of ice melts at 0 °C. Assume the melting occurs reversibly.