A refrigerator connects reservoirs with temperatures of 270 K and 360 K. What is the change in temperature of the high-temperature reservoir that results in the work required to cool the low-temperature reservoir being halved? Answer to three significant figures.
A heat pump heats a high-temperature reservoir with a temperature of by 7.5 J for each joule of work that it does. The pump connects the reservoir to a low-temperature reservoir. What is the temperature of the low-temperature reservoir? Answer in degrees Celsius to three significant figures.
Heat pumps and refrigerators are very similar to each other, consisting of the same basic components. However, they are not modeled in exactly the same way as each other.
Which of the following statements correctly explains the similarities between a heat pump and a refrigerator?
Which of the following statements correctly explains the differences between a heat pump and a refrigerator?