The efficiency of a particular car engine is 26 percent, Ask an Expert

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The efficiency of a particular car engine is 26 percent when the engine does 7.0 kJ of work per cycle. Suppose the process is reversible.

(a) Find what is the energy the engine gains per cycle as heat Q_gain from the fuel combustion?

(b) Obtain the energy the engine loses per cycle as heat Q_lost?

(d) If a tune-up increases the efficiency to 32 percent, find what is Q_lost at the same work value?

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