Mary and her younger brother alex decide to ride the 17-foot diameter carousel at the state fair. mary sits on one of the horses in the outer section at a distance of 6.5 feet from the center. alex decides to play it safe and chooses to sit in the inner section at a distance of 6 feet from the center. what is mary's centripetal acceleration am compared to that of alex's centripetal acceleration aa? give your answer as a multiple of aa aa

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?