A Refrigerator Has a Coefficient of Performance Equal to 4

question 42

Multiple Choice

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

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

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Definitions:

Research-Supported

Refers to practices or interventions that have been scientifically verified through rigorous studies.

Family-Based Therapies

Therapeutic approaches that involve family members in the treatment process to address relational and individual problems within the context of the family system.

Externalizing Problems

Behavioral issues that are outwardly directed, often involving conflicts with others or with the environment, such as aggression or destructiveness.

MST

Multi-Systemic Therapy, a therapeutic intervention aimed at adolescents with behavioral problems, addressing factors in the family, school, and community systems.