A50.0-g ball traveling at 25.0 m/s bounces off a brick wall and
rebounds at 22.0 m/s. a high-speed camera records this event. if the
ball is in contact with the wall for 3.50 ms, what is the magnitude of
the average acceleration of the ball during this time interval?

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e

The energy produced as a result of this flow of electrons from atom to atom is called

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?