A refrigerator is to maintain eatables kept inside at9oC . If room temperature is 36o C, calculate the coefficient of performance
A thermodynamic system is taken from an original state to an intermediate state by the linear process shown in Fig. (12.13).
An electric heater supplies heat to a system at a rate of 100W. If system performs work at a rate of 75 Joules per second. At what rate is the internal energy increasing?
A steam engine delivers 5.4×108 J of work per minute and services 3.6 ×109 J of heat per minute from its boiler. What is the efficiency of the engine? How much heat is wasted per minute?