A certain coal-fired power plant has a rated power capacity of P = 1350 MW. The output of this plant is W = 0.34QH, where QH is the energy input as heat from the hot reservoir. Part (a)  Write an equation for the efficiency of a heat engine in terms of QH and the heat QC exhausted to a low temperature reservoir.  Part (b)  Which would increase the efficiency more, doubling QH or reducing QC by half?  Part (c)  Calculate the maximum thermal efficiency of the power

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