One of the most efcient engines ever built is a coal-red
Chapter 12, Problem 12.27(choose chapter or problem)
One of the most efcient engines ever built is a coal-red steam turbine engine in the Ohio River valley, driving an electric generator as it operates between 1 870C and 430C. (a) What is its maximum theoretical efciency? (b) Its actual efciency is 42.0%. How much mechanical power does the engine deliver if it absorbs 1.40 105 J of energy each second from the hot reservoir?
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