Posted by sarah on Friday, April 30, 2010 at 6:57am.
A sample of monatomic gas (£^ = 5/3) is expanded adiabatically from an initial temperature, volume, and pressure of 230. ¢XC, 6.00 litres, and 5.00 kPa, respectively, to a final volume of 7.00 litres.
(a) What is the final pressure of the gas?
(b) How much work is done by the gas during the adiabatic expansion?

physics  Savannah, Friday, April 30, 2010 at 7:26am
dude i have no idea!

physics  drwls, Friday, April 30, 2010 at 7:43am
(a) During the expansion, the product
P*V^(5/3) remains constant. You know the ratio V2/V1. Use the adiabatic relationship to calculate P2/P1.
P2/P1 = (V1/V2)^(5/3)
= (6/7)^(5/3) = 0.773
(2) The work done is the integral of P dV from V1 to V2. Express P as a function of V and integrate
P(V) dV = [P1*V1^(5/3)]*/V^5/3)]dV
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