A capacitor with parallel plates has capacitance C , if you decreased the separation between the plates of it , what happen to the capacitance ? It ….. Select one:
a. unchanged
b. double
c. decreases
d. increases

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?