Question

Consider a gas with density $\rho$ and $\overline{c}$ as the root mean square velocity of its molecules contained in a volume. If the system moves as whole with velocity v, then the pressure exerted by the gas is

• A. $\frac{1}{3}\rho {\overline{c}}^2$
• B. $\frac{1}{3}\rho (c+v{)}^2$
• C. $\frac{1}{3}\rho (\overline{c}-v{)}^2$
• D. $\frac{1}{3}\rho (c^{-2}-v{)}^2$

Answer 1

The correct option is A

$\frac{1}{3}\rho {\overline{c}}^2$

Based on Formula