Frequency of an electron equation

[charlotte_jacobs_4I]

I know that there are specific equations that you can only use for an electron or something with mass. Which equation would you use to find the frequency of an electron?

[Andre_Galenchik_2L]

For an electron, you would most likely be given info to complete the equation E - work function = KE to find the frequency.

[405112316]

De Broglie's equation is used with things that have mass (i.e. electrons). The photoelectric effect includes three components. E=hv is used ONLY for photons/light. The threshold equation is the energy needed to eject an electron and that is usually a given value. The kinetic energy of the electron is found by the equation E = (1/2)mv^2.