A heat pump absorbs heat from the atmosphere at a rate of 30 kW. If work is being done to run this heat pump at a rate of 7.7 kW, what is the coefficient of performance (COP) of the heat pump?
A) 22 B) 0.26 C) 2.9 D) 4.9 E) 3.9
D
Physics & Space Science
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Fill in the blank(s) with correct word
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Helium fusion does not begin until the star has entered the giant region of the H-R diagram
Indicate whether the statement is true or false
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Why does an observer on Earth always see the same side of the Moon's surface?
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Why do astronomers believe Triton may have been a planet that was captured by Neptune?
A) It orbits Neptune in the opposite direction of Neptune's rotation. B) It is too large to have been formed in the jovian nebula that formed Neptune. C) It has an atmosphere and a measurable greenhouse effect. D) It undergoes seasonal changes. E) It is colder than any other moon or planet.
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