1. The problem statement, all variables and given/known data The threshold frequency of a metal is 3.184 x 10^14 Hz. If a photon of wavelength 368 nm strikes the surface of the metal, what is the wavelength of the ejected electron? 2. Relevant equations f (frequency) = c/(wavelength) Eincident = Ethreshold + KE E=fv(wavelength) 3. The attempt at a solution Oh man... here it is. I bet I'm missing something huge but it's just been killing me.