Question
Helium gas expands from 20 psia, 600 R, and 9 $\mathrm{ft}^{3}$ to 15 psia in a polytropic process with $n=$ 1.667. How much work does it give out?
Step 1
3 \, \text{ft-lbf/lbm-R}\), and \(T_1 = 600 \, \text{R}\). Substituting these values into the formula, we get: \[m = \frac{20 \times 9}{53.3 \times 600} = 0.112 \, \text{lbm}\] Show more…
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