Un trozo de metal de 12 gr, tiene una densidad de 4 /^3 y esta sumergido por medio de una cuerda en una pileta de aceite de densidad 1,5 /^3, como muestra la figura . ¿Cuánto vale la tensión de esa cuerda?

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?