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### Frequency of an electron equation

Posted: **Sun Nov 04, 2018 6:40 pm**

by **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?

### Re: Frequency of an electron equation

Posted: **Sun Nov 04, 2018 6:45 pm**

by **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.

### Re: Frequency of an electron equation

Posted: **Sun Nov 04, 2018 8:47 pm**

by **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.