# univ. physics

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A heat pump has a coefficient of performance of 4.5. If the heat pump absorbs 46.1 cal of heat from the cold outdoors in each cycle, what is the amount of heat expelled to the warm indoors?
(in cal)

• univ. physics -

An Otto engine has a maximum efficiency of 33.1 %; find the compression ratio. Assume that the gas is diatomic.

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