An apparatus that liquefies helium is in a room maintained, Physics

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An apparatus that liquefies helium is in a room maintained

An apparatus that liquefies helium is in a room maintained at 306 K. If the helium in the apparatus is at 4.0 K, what is the minimum ratio Qto/Qfrom, where Qto is the energy delivered as heat to the room and Qfrom is the energy removed as heat from the helium?

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Physics: An apparatus that liquefies helium is in a room maintained

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