# Homework Help: De Broglie Wavelength Problem

1. Feb 20, 2007

### MrDMD83

1. The problem statement, all variables and given/known data

What is each of the following?
(a) the wavelength of a 6.0 eV photon
m
(b) the de Broglie wavelength of a 6.0 eV electron
m

2. Relevant equations

?

3. The attempt at a solution

None so far

2. Feb 20, 2007

### stunner5000pt

$$\lambda=\frac{h}{mv}$$

3. Feb 20, 2007

### MrDMD83

what about the velocity?

4. Feb 21, 2007

### stunner5000pt

nevermind use this formula

$$f = \frac{E}{h}$$

and $$c = \lambda f$$

by th way this is probably in your textbook or in your notes...

you can also look this up on wikipedia, for example

5. Feb 21, 2007

### MrDMD83

I've already solved part a. The De Broglie wavelength is given by the equation $$lambda=h/p$$.

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