Question
Helium gas expands from $125 \mathrm{kPa}, 350 \mathrm{K},$ and $0.25 \mathrm{m}^{3}$ to $100 \mathrm{kPa}$ in a polytropic process with $n=1.667 .$ Is the work positive, negative, or zero?
Step 1
Step 1: First, we need to understand that the work done in a polytropic process is given by the equation: \[ W = \int PdV \] where \( P \) is the pressure, \( V \) is the volume, and the integral is taken over the volume change in the process. Show more…
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A nitrogen gas goes through a polytropic process with $n=1.3$ in a piston/cylinder. It starts out at $600 \mathrm{~K}, 600 \mathrm{kPa}$ and ends at $800 \mathrm{~K}$. Is the work positive, negative, or zero?
Helium gas expands from $125 \mathrm{kPa}, 350 \mathrm{K},$ and $0.25 \mathrm{m}^{3}$ to $100 \mathrm{kPa}$ in a polytropic process with $n=1.667 .$ How much work does it give out?
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