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this is a question from an old exam that I am trying to understand
I don't think you need the passage but I included it anyways along with the explanation of the answer
I specifically don't understand the 2nd step of the algebra where they have they Qc/Qc in the numerator.
http://mysowar.wordpress.com/files/2009/06/refrig-1.jpg
http://mysowar.wordpress.com/files/2009/06/refrig-2.jpg
thanks in advance
I don't think you need the passage but I included it anyways along with the explanation of the answer
I specifically don't understand the 2nd step of the algebra where they have they Qc/Qc in the numerator.
http://mysowar.wordpress.com/files/2009/06/refrig-1.jpg
http://mysowar.wordpress.com/files/2009/06/refrig-2.jpg
thanks in advance