If atmospheric pressure is 100 Pa, what is the force exerted by the atmosphere on a rectangular surface that measures 0.8 m by 0.5 m?

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot

What is the weight of a 8-kg substance in n, kn, kg·m/s2, kgf, lbm·ft/s2, and lbf?