Question

Certain amount of an ideal gas is contained in a closed vessel. The vessel is moving with a constant velocity v. The rise in temperature of the gas when the vessel is suddenly stopped is (M is molecular mass, g = C_p/C_n)

• A. $\frac{Mv^{2}(\gamma - 1)}{2R}$
• B. $\frac{Mv^{2}(\gamma + 1)}{2R}$
• C. $\frac{Mv^{2}}{2R\gamma}$
• D. $\frac{Mv^{2}}{2R(\gamma + 1)}$

Answer 1

Answer: (A)

$\frac{Mv^{2}(\gamma - 1)}{2R}$

Answer 2

$\frac{1}{2}$MV² = msDQ &

(s)_gm = $\frac{C_{molar}}{M}$ & $\left\lbrack C_{v} = \frac{R}{\gamma - 1} \right\rbrack$