Se encuentra que dos esferas metálicas concéntricas tienen una diferencia de potencial de 900V cuando se les aplica una carga de 6.726X10–8 C. El radio de la esfera exterior es 0.210 m. ¿Cuál es el radio de la esfera interior?

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?