in the diagram, q1 = +6.39*10^-9 c and q2 = +3.22*10^-9 c. what is the electric field at point p? include a + or - sign to indicate the direction. q1 0.424m P 0.636 q2

The nuclear potential that binds protons and neutrons in the nucleus of an atom is often approximated by a square well. imagine a proton conned in an innite square well of length 105 nm, a typical nuclear diameter. calculate the wavelength and energy associated with the photon that is emitted when the proton undergoes a transition from the rst excited state (n 2) to the ground state (n 1). in what region of the electromagnetic spectrum does this wavelength belong?