- #1

fluidistic

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## Homework Statement

I'm not even sure the problem is about matterwave:

A particle of mass m and charge e is accelerated by a potential difference V. Find the wavelength of the particle. Show that this result agrees with the classical one when the non relativistic limit is taken.

## Homework Equations

Not sure, but I think that [tex]\lambda _B=\frac{h}{mv}[/tex] where m is the relativistic mass, i.e. [tex]m=\gamma m_0[/tex].

Maybe [tex]F=qE[/tex]?

## The Attempt at a Solution

I'm not really sure how to find the motion equation of the particle and I need its velocity in order to calculate its de Broglie's wavelength. F=qE.

[tex]\Delta V =\int _A^b \vec E d \vec l[/tex]... I don't go anywhere that way.

I've no idea what I'm missing.