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The graph in the figure shows a cycle for a heat engine for which QH = 28 J. p (kPa) 400 200 0 V (cm')

The graph in the figure shows a cycle for a heat engine for which QH = 28 J. p (kPa) 400 200 0 V (cm') 100 200 The thermal efficiency of the heat engine is %. Drag answer here 36 The heat engine exhausts at Drag answer here 18 40 20 10 29

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