For a given machine, explain why the Mechanical Advantage is usually less than the Ideal Mechanical Advantage? What does this tell you about a machine that has a mechanical advantage vs. a machine that has an ideal mechanical advantage? Provide an example of a machine with a MA and a machine with an IMA. /7 Your answer

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?