A Perfectly Reversible Heat Pump with a Coefficient of Performance

question 1

Multiple Choice

A perfectly reversible heat pump with a coefficient of performance of 14 supplies energy to a building as heat to maintain its temperature at 27°C.If the pump motor does work at the rate of 1 kW, at what rate does the pump supply energy to the building?

• A)15 kW
• B)3.9 kW
• C)1.4 kW
• D)0.26 kW
• E)0.067 kW

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Definitions:

Perceived Loudness

The subjective interpretation of the intensity of a sound, which can vary depending on the listener and the context.

Pitch

The perceived frequency of a sound, determining how high or low it sounds.

Color Vision

The ability of the eye to distinguish objects based on the wavelengths (or frequencies) of the light they reflect, emit, or transmit.

Ganglion Cells

Neurons located in the retina that receive visual information from photoreceptors and transmit it to the brain.