1.

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, then the pressure exerted by the gas is

A. \[\frac{1}{3}\rho {{\bar{c}}^{2}}\]      
B. \[\frac{1}{3}\rho {{\left( c+\nu  \right)}^{2}}\]
C. \[\frac{1}{3}\rho {{\left( \bar{c}-\nu  \right)}^{2}}\]       
D.        \[\frac{1}{3}\rho {{\left( {{{\bar{c}}}^{2}}-\nu  \right)}^{2}}\]
Answer» B. \[\frac{1}{3}\rho {{\left( c+\nu  \right)}^{2}}\]


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