A 20.0%-efcient real engine is used to speed up a train
Chapter 12, Problem 12.34(choose chapter or problem)
A 20.0%-efcient real engine is used to speed up a train from rest to 5.00 m/s. It is known that an ideal (Carnot) engine using the same cold and hot reservoirs would accelerate the same train from rest to a speed of 6.50 m/s using the same amount of fuel. If the engines use air at 300 K as a cold reservoir, nd the temperature of the steam serving as the hot reservoir.
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