F a steel containing 1.34 wt%C is cooled relatively slowly to room temperature, what is the expected weight fraction of pearlite in the as-cooled microstructure? Answer Format: X. XX Unit: unitless (weight fraction)

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?