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The density of the gas is 6 xx 10^-2 kg/...

The density of the gas is `6 xx 10^-2 kg/m^3` and r.m.s. velocity `500 m/s`. Then the pressure exerted by the gas on the walls of the vessel is

A

`5 xx 10^3 N/m^2`

B

`1.2 xx 10^4 N/m^2`

C

`30 N/m^2`

D

`0.8 xx 10^4 N/m^2`

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