A heat pump is used to heat a house in Minnesota in the winter and has half the ideal coefficient of performance for a reversible heat pump. If the outside air temperature is 
and the indoor temperature desired is 
and if it can do work at a rate of 1250 W, what is the rate of heat flow into the house?
A. 340 W
B. 1100 W
C. 625 W
D. 300 W
D. 300 W
Physics & Space Science
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Greenhouse gasses include
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A. Earth's orbit B. Earth-Moon distance C. Earth's diameter D. about the length of a football field
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A constant net force on a railroad car produces constant
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