PLEASE HELP A solenoid has 450 loops, each of
radius 0.0254 m. The field
increases from O T to 3.00 T in
1.55 s. What is the EMF
generated in the coil?
(Hint: What is the area of a circle?)
(Unit = Volts)

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?