A beam of hydrogen molecules, H2, is directed toward a wall, at an angle of 60° with the normal to the wall. Each molecule in the beam has a speed of 2.0 km/s and a mass of 3.3×10-24 g. The beam strikes the wall over an area of 4.5 cm2, at a rate of 6.00×1022 molecules per second. What is the beam's pressure on the wall?