Alaser diffraction pattern results in y = 6.0 cm, and the distance from the gap to the screen is d = 12 cm. the tangent of θ would be equal to . calculating the inverse (tan–1) of the value for the tangent of θ would give us a diffraction angle, θ, of degrees.

Which of the following correctly describes what happens when an atomic bomb explodes? small pieces of fissionable material are joined and form a body with a mass greater than the critical mass, the relative number of neutrons escaping decreases, and a chain reaction and explosion result. large pieces of fissionable matter are brought together quickly and form a body with a mass smaller than the critical mass, the relative number of escaping neutrons increases, and a chain reaction and explosion result.