A Refrigerator Has a Coefficient of Performance Equal to 4

question 15

Multiple Choice

A refrigerator has a coefficient of performance equal to 4.2.How much work must be done on the operating gas in the refrigerator in order to remove 250 J of heat from the interior compartment?

• A)60 J
• B)120 J
• C)250 J
• D)480 J
• E)1050 J

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Definitions:

Handle Stress

Techniques and strategies used to manage and reduce stress in one’s life.

Parasympathetic Nervous System

A division of the autonomic nervous system that conserves energy by slowing the heart rate and increasing intestinal and glandular activity.

Passive-Aggressive Behavior

A pattern of indirectly expressing negative feelings instead of openly addressing them.

Primary Emotions

Fundamental feelings inherent in humans, such as joy, sadness, anger, and fear, that are immediate responses to stimuli.