## anonymous one year ago Calculate the change in energy of an atom that emits a photon of wavelength 2.21 meters. (Planck’s constant is 6.626 x 10-34 joule seconds, the speed of light is 2.998 x 108 m/s)

1. JFraser

you need the two equations for electromagnetic radiation $c = \lambda * \nu$and$E = h*\nu$ use the first equation to find the frequency $$\nu$$ of the wave, and use the second equation to find the energy (E) of the wave

2. anonymous

help me feather