A Heat Engine Operates Between a Hot Reservoir at 1500

question 66

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.
-If the coefficient of performance for a refrigerator is 5.0 and 72 J of work are done on the system,how much heat is rejected to the room?

• A)390 J
• B)430 J
• C)360 J
• D)310 J
• E)530 J

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Definitions:

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Marine, predatory animals of the order Actiniaria; they are notable for their colorful appearance and a body structure similar to a flower.

Anal Sphincter

A ring of muscle surrounding the anus that helps control the passage of feces out of the body by contracting and relaxing.

Skeletal Muscle

Skeletal muscle is a type of striated muscle tissue which is under the voluntary control of the somatic nervous system; it is involved in locomotion and movement.

Muscle Tension

Force exerted by a contracting muscle.