How does the temperature of water change when it is placed in a freezer and then begins to freeze? A. lt decreases first and then remains constant.
B. It increases first and then remains constant.
C. It decreases first and then increases.
D. It increases first and then decreases.​

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?