34. IE The heat output of an engine is 1.75 103 J per cycle, and...

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34. IE • The heat output of an engine is 1.75 × 103 J per cycle, and the net work out is 4.0 × 103 J per cycle.

(a) The heat input is (1) less than 44.0 × 103 J,

(2) between 4.0 × 103 J and 7.5 × 103 J, (3) greater than 7.5 × 103 J. Explain.

(b) What is the heat input and thermal efficiency of the engine?

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