- #1

richyw

- 180

- 0

## Homework Statement

Calculate the kinetic energy of an electron with a wavelength of 1fm

## Homework Equations

DeBroglie's relation

[tex]E^2=(pc)^2+\left(mc^2\right)^2[/tex]

## The Attempt at a Solution

I used debroglies relation to find momentum. plugged that into find E, and then subtracted the rest mass to find the kinetic energy. Is this even right? Is there a better way to do it?