Carnot Devices: the Temperature Inside a Carnot Refrigerator Placed in a Kitchen

question 46

Multiple Choice

Carnot devices: The temperature inside a Carnot refrigerator placed in a kitchen at 22.0°C is 2.0°C. The heat extracted from the refrigerator is 89 MJ/h. What power is needed to operate this refrigerator?

• A) 1.7 kW
• B) 1.8 kW
• C) 1.5 kW
• D) 1.9 kW
• E) 1.6 kW

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Definitions:

Sample Data

Data collected or selected from a larger population, used in statistical analysis to make inferences about the population.

Variance

A statistical measurement of the spread between numbers in a dataset, indicating how much they differ from the mean of the set.

Population

The entire group of individuals or instances about whom we wish to make conclusions in a statistical study.

Standard Deviation

A statistical index that signifies the distribution of data points around the mean of a dataset.