A cubic vessel (with faces horizontal + vertical) contains an ideal...
0A cubic vessel (with faces horizontal + vertical) contains an ideal gas at NTP. The vessel is being
\( \mathrm{P} \) carried by a rocket which is moving at a speed of
W \( 500 \mathrm{~m} / \mathrm{s} \) in vertical direction. The pressure of the gas inside the vessel as observed by us on the ground
(a) remains the same because \( 500 \mathrm{~m} / \mathrm{s} \) is very much smaller than \( v_{\text {rms }} \) of the gas
(b) remains the same because hnotion of the vessel as a whole does not affect the relative motion of the gas molecules and the walls
(c) will increase by a factor equal to \( \left[v_{\text {rms }}^{2}+(500)^{2}\right] / v_{\text {rms }}^{2} \), where \( v_{\text {rms }} \) was the original mean square velocity of the gas
(d) will be different on the top wall and bottom wall of the vessel.
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