(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A Carnot air conditioner takes energy from the thermal energy of a room at 70 degrees F and transfers it to the outdoors, which is at 96 degrees F. For each joule of electric energy required to operate the air conditioner, how many joules are removed from the room?

2. Relevant equations

[tex]\frac{Q_C}{Q_H} = \frac{T_C}{T_H}[/tex]

3. The attempt at a solution

I substituted W + Q_{C}for Q_{H}. Then I plugged in

W = 1,

T_{C}= (70-32) * 4/5+273,

T_{H}= (96-32) * 4/5+273

and solved for Q_{C}.

I get Q_{C}= 20.3 J, but the answer in the back is rounded 21 J. When I read the problem, I thought the question was asking for Q_{C}. Should the 1 J or work be included in the amount of joules being removed from the room?

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# Homework Help: Carnot air conditioner

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