the mass of H2 molecule is 3×10^-27kg. if 10^24 molecules strikes 10cm^2 of area of a surface at an angle of 45° with the normal with the speed of 10^4 m/s,what pressure will the surface experience?
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The mass of a hydrogen molecule is 3.32 × 10–27 kg. If 1023 hydrogen molecules strike, per second, a fixed wall of area 2 cm2 at an angle of 45° to the normal, and rebound elastically with a speed of 103 m/s, then the pressure on the wall is nearly : (1) 4.70 × 103 N/m2 (2) 2.35 × 102 N/m2 (3) 4.70 × 102 N/m2 (4) 2.35 × 103 N/m2
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