D) provided a recording medium (film) with sensitivity of 100uj/cm2 and a power detector with 10mm of diameter, background measured optical power of 8uw and measured optical power from the laser source of 50uw, determine the exposure time of the recording medium.

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?