2.Two boys are playing with slingshots on the side of a bridge. One boy pulls his slingshot back very far before launching his rock, while the other boy barely stretches his at all. If they each launch their rocks horizontally from the same place, which rock goes further? Why?

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?