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j88k
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Homework Statement
The figure (http://session.masteringphysics.com/problemAsset/1001463/8/knight_Figure_19_54.jpg) shows the cycle for a heat engine that uses a gas having a specific heat ratio = 1.25 . The initial temperature is T1 = 300K ,and this engine operates at 20 cycles per second.
a) What is the power output of the engine?
b)What is the engine's thermal efficiency?
Homework Equations
P=W/t
Not sure what else.
The Attempt at a Solution
T1=T2=300K
P1*V1=P2*V2
(1)(600)/200=3atm=P2=P3
P1/T1=P3/T3
(300)(3)/1=900K=T3
Don't know where to go next.