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The mass of a hydrogen molecule is 3.32x...

The mass of a hydrogen molecule is `3.32xx10^(-27)`kg. If `10^(23)` hydrogen molecules strike, per second, a fixed wall of area 2`cm^(2)` at an angle of `45^(@)` to the normal, and rebound elastically with a speed of `10^(3)` m/s, then the pressure on the wall is nearly

A

`2.35 xx 10^(2) N/m^(2)`

B

`4.70 xx 10^(2) N/m^(2)`

C

`2.35 xx 10^(3) N/m^(2)`

D

`4.70 xx 10^(3) N/m^(2)`

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