Question

A beam of hydrogen molecules (H₂) is directed toward a wall at an angle of 58 degrees with the normal to the wall. Each molecule in the beam has a speed of 1.1 km/s and a mass of 3.3 x 10^-24 g. The beam strikes the wall over an area of 2.2 cm², at a rate of 1.1 x 10²³ molecules/s. What is the beam's pressure on the wall? Give your answer in Pa, but enter only the numerical part in the box.

Answer 1

ym : ) force of momenton f= = rade of more! in :- rate at which mass strikes. 3.3x1024 x 14 x 1023 g/s. in = in = 0.363 gls. only y-component is changing. ou = 2.v. loso 2x 1000 Loss 8 = 1059.84 wils. fr in = 0.363 x 1059.84 = 1000 0.385 N Pressure = // = 0.2854 (P= 1750 Pascal