PHYSICS 135 Chapter Notes - Chapter 20: Electrical Energy, Phase Transition, The Cw Plus
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Evaluate: since the engine operates on a cycle, the net q equal the net w. but to calculate the efficiency we use the heat energy input, Identify and set up: the problem deals with a heat engine. Eq. (20. 4) to calculate the efficiency e and eq. (20. 2) to calculate. H cl is the heat of combustion. where ml= c work output. Evaluate: of the mechanical work and the remaining. 6. 43 10 j of heat energy supplied to the engine each second, 1. 80 10 j is discarded into the low temperature reservoir. Q < dividing by t gives equivalent equations for the rate of. Evaluate: the equations for e and w have the same form when written in terms of power output and rate of heat flow. Evaluate: the work output of the engine is e. Evaluate: an increase in r gives an increase in e. 2. 10 then eq. (20. 2) to calculate (a) execute: performance coefficient.
