Lily took 6 hours to complete a journey at an average speed of 58km/h. For the first 4 hours, she travelled at an average speed of 64 km/h. What was the distance for the rest of the journey?

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?