A Refrigerator Has a Coefficient of Performance Equal to 4

question 246

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

---

Definitions:

Conflict Theory

A sociological perspective that views social life as a competition, with individuals and groups struggling over resources and power.

Labeling Theory

A sociological theory that suggests the self-identity and behavior of individuals may be determined or influenced by the terms used to describe or classify them.

David Rosenhan

A psychologist known for his influential study "On Being Sane in Insane Places," which challenged the validity of psychiatric diagnoses.

Pseudo-Patients

Individuals who simulate illness to study the treatment environment and practices within mental health institutions, notably in the Rosenhan experiment.