An Ideal,reversible Refrigerator Keeps Food in the Freezer Portion at -15

question 59

Multiple Choice

An ideal,reversible refrigerator keeps food in the freezer portion at -15 $^{\circ}$ C and dumps excess heat into the kitchen,whose temperature is 20 $^{\circ}$ C.What is the refrigerator's coefficient of performance under these conditions?

• A) 7.4
• B) 4.0
• C) 8.4
• D) 2.1

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A delayed response to a marketing communication campaign.

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An agent or intermediary with which the sender works to develop the marketing communications; for example, a firm’s creative department or an advertising agency.