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A 1.00-mol sample of a monoatomic ideal gas is taken through the cycle shown in the figure. At point A, the pressure, volume, and temperature are , , and , respectively. In terms of R and , findย
(a) the total energy entering the system by heat per cycle
(b) the total energy leaving the system by heat per cycle
(c) the efficiency of an engine operating in this cycle
(d) Explain how the efficiency compares with that of an engine operating in a Carnot cycle between the same temperature extremes.
A heat engine takes 1.00-mol sample of an ideal monatomic gas through the cycle shown in Figure. The process A to B is an isothermal expansion. Calculate
a. the net work done by the gas, b. the energy added to the gas by heat, c. the energy exhausted from the gas by heat, and
d. the thermal efficiency of the heat engine.
1. Thetemperature of the heat reservoirs for a Carnot cycle (reversible)engine are Th = 1200 K and Tc = 300 K. (a)Calculate the efficiency of this engine to two significan figures.(b) If w = -100 kJ (note that the sign means work is done by thesystem) calculate q1 and q2 in kJ. Enter themin that order to two significant figures. (c) The same engine canbe operated in reverse, i.e. as a heat pump which is an engine thatturns work into heat. If w = +100 kJ, calculate q1 andq2 in kJ (note that the signs change). (d) Suppose itwere possible to have an engine with a higher efficiency of 0.80.If for this engine w = -100 kJ, calculate q1 andq2 in kJ. (e) Now let