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a(9) - EML 3100 Exam 3 Page 1/3 THERMODYNAMICS 11:45-1:00...

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EML 3100 Exam 3 THERMODYNAMICS 4/16/09 11:45-1:00 pm Page 1/3 Solutions ([email protected]) series a DO NOT WRITE ON THE BLUE TABLES. RETURN THE BLUE TABLES WITH YOUR EXAM. DO NOT STAPLE THE EXAM SHEETS TOGETHER. Put your answers on the same sheet as the question, Use many digits in your computation. You must give the units of your answers. You must write clearly. Encircle the right answer number in multiple choice. To correct, erase the wrong circle as well as you can and encircle the corrected answer number twice. Best possible answer for multiple choice. For questions asking a number, putting the clear correct formula(s) below the question might result in partial credit even if the answer is wrong. Not following those requirements will result in reduced or no credit. 1. (5%) Helium in an adiabatic container is compressed reversibly from 25 C to 300 C. The work that must be done to do so is 856.4 kJ/kg. 2. (5%) One of the following heat pumps is possible, one does not satisfy the first law, and one does not satisfy the second law. Which is the one that is possible?
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