Isothermal process on p-V, T-V, and p-T diagrams
Isothermal process on p-V, T-V, and p-T diagrams
Isothermal process on p-V, T-V, and p-T diagrams
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Clicker questi<strong>on</strong> 4<br />
C<strong>on</strong>sider the p-V diagram below in which the system evolves from a → b<br />
→ c. What is the net change in internal energy, ΔE int ?<br />
p (Nm –2 )<br />
10 5<br />
5 ×10 4<br />
a<br />
1<br />
T 0<br />
2<br />
b<br />
c<br />
V (m 3 )<br />
a) 0 J<br />
b) 5.0 ×10 4 J<br />
c) about 7.0 ×10 4 J<br />
d) 10 5 J<br />
e) Not enough informati<strong>on</strong> to tell<br />
first law of thermodynamics: ΔE int = Q – W ( = nC V ΔT )<br />
ideal gas law: pV = nRT<br />
PHYS 1101, Winter 2009, Prof. Clarke 10