A heat pump extracts heat from a cold outdoor environment and releases it into a warm interior space. i) What is the heat extracted from the cold outdoor environment, and ii) What is the coefficient of performance of the heat pump?

• A. i. Q_C = 67 J, ii. K = 1.26
• B. i. Q_C = 53 J, ii. K = 2.61
• C. i. Q_C = 53 J, ii. K = 1.26
• D. i. Q_C = 67 J, ii. K = 2.61

Answer: (A)