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Assistance please

  1. Apr 18, 2006 #1
    hey can anyone help me with this problem...

    three pounds-mass per second of air is reversibly and polytropically (n=1.48) expanded in a gas turbine from 2100F to 900F. if the exhaust pressure is 15psia, determine the work produced per pound-mass of air, the power generated, and the rate of heat transfer.

    i...dont...understand...what...this...means... :confused:

    thank you
  2. jcsd
  3. Apr 18, 2006 #2
    So, yeah, I'm attempting to help my nephew out with this; however, my knowledge of physics is limited (haven't studied in a number of years). If any person is willing to at least assist me with a starting point or a formula to follow that would be great.
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