Terry is convinced that heating peanut butter will increase its mass so that it covers more bread. is he correct?
a. no, mass is only equal to temperature
b. no, heating matter does not affect mass
c. yes, mass is directly relates to temperature
d. yes, heating matter increases its mass

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?