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(B) Consider a gas-filled compartment moving with acceleration $a$ in the horizontal direction.In the non-inertial frame of reference of the compartme

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Lower in the front side

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(B) Consider a gas-filled compartment moving with acceleration $a$ in the horizontal direction.In the non-inertial frame of reference of the compartment,a fictitious force acts on the gas molecules in the direction opposite to the acceleration (i.e.,towards the rear side).This causes the gas molecules to crowd towards the rear side of the compartment.As a result,the density and consequently the pressure of the gas increase at the rear side.Conversely,the density and pressure decrease at the front side of the compartment.Therefore,the pressure is lower in the front side.

$A$ closed compartment containing gas is moving with some acceleration in the horizontal direction. Neglect the effect of gravity. Then the pressure in the compartment is

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