A Refrigerator Uses 40 J of Work to Extract Heat

question 32

Multiple Choice

A refrigerator uses 40 J of work to extract heat from a heat reservoir at 0.00°C. If the coefficient of performance of the refrigerator is 2.1, then how much heat is extracted from the heat reservoir at 0.00°C?

• A) 48 J
• B) 65 J
• C) 84 J
• D) 90 J

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Definitions:

Economic Expansion

A phase of the business cycle where the economy grows and increases its output, leading to higher employment and income levels.

Roosevelt Administration

The period of U.S. governance under President Franklin D. Roosevelt, most noted for the New Deal programs implemented to counter the effects of the Great Depression.

Dust Bowl

A period in the 1930s characterized by severe dust storms that damaged the ecology and agriculture of the US and Canadian prairies.

Okies

A term originally used to describe residents of Oklahoma during the Dust Bowl era, it now refers broadly to people who migrated from the central United States during economic hardships.