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Steam locomotives have an efficiency of 15.0% and operate with a hot steam temperature of 400C. (a) What would the cold reservoir temperature (in C)

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Steam locomotives have an efficiency of 15.0% and operate with a hot steam temperature of 400C. (a) What would the cold reservoir temperature (in C) be if this were a Carnot engine? SW (D) What would the maximum efficiency of this steam engine be if its cold reservoir temperature were 150C

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