The mass of a molecule of a gas is 4 × 10 –30 kg. If 10 23 molecules strike the area of 4 square meter with the velocity 10 7 m/sec, then what is the pressure exerted on the surface ?
(Assuming perfectly elastic collision and they are hitting perpendicularly) (Ans. in N/m 2 )
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Ans. 2
Sol. 2 N/m 2
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