A 25,000-kg subway train initially traveling at 15.5 m/s slows to a stop in a station and

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A 25,000-kg subway train initially traveling at 15.5 m/s slows to a stop in a station and then stays there long enough for its brakes to cool. The station's dimensions are 65.0 m long by 20.0 m wide by 12.0 m high. Assuming all the work done by the brakes in stopping the train is transferred as heat uniformly to all the air in the station, by how much does the air temperature in the station rise? Take the density of the air to be 1.20 kg/m3 and its specific heat to be 1020 J/kg • K.
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University Physics with Modern Physics

ISBN: 978-0321501219

12th Edition

Authors: Hugh D. Young, Roger A. Freedman, Lewis Ford

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