A balloon with a volume of 1.50 L is put in liquid nitrogen temperature is -195.8°C 77K shrinking is volume 2.40 L in kelvins what was the balloons original temperature

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?