A Heat Engine Operates Between a Hot Reservoir at 1500

question 34

Multiple Choice

A heat engine operates between a hot reservoir at 1500 K and a cold reservoir at 500 K.During each cycle,1.0 × 10⁵ J of heat is removed from the hot reservoir and 5.0 × 10⁴ J of work is performed.
-A heat pump is found to remove 2400 J of heat from the exterior of a house and deliver 3500 J of heat to the interior of the house.What is the coefficient of performance of the heat pump?

• A)1.5
• B)3.2
• C)2.7
• D)3.9
• E)2.2

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