From your residence, you walk 3 miles north, you then turn 90° to the right and travel 2 miles east. What is your distance and displacement? These are different values,
evaluate both.
(Distance = 1 pt., Displacement = 3 pts.)

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?