Acarnot air conditioner operates between an indoor temperature of 20°c and an outdoor temperature of 39°c. how much energy does it need to remove 2000 j of heat from the interior of the house? a. 340 j
b. 780 j
c. 105 j
d. 130 j
e. 520 j

D. 130 J

Explanation:

The coefficient of performance for a machine that is being used to cool, is given by:

Here  is the heat removed from the cold reservoir, W is the work required, that is, the energy required to remove the heat from the interior of the house, is the cold temperature and is the hot temperature. Recall use absolutes temperatures(). Replacing and solving for W:

c) power lifting, will be your answer.

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