- #1

ScotchDave

- 26

- 0

## Homework Statement

The formula for cyclotronic motion in SI units was shown to be p=qeBR. Show that in units in which R is in metres but p is in GeV/c p=0.3qBR

## Homework Equations

[tex]qe^{-}=1.6 \times 10^{-19} C[/tex] I think!

[tex]L=\frac{\hbar \times c}{eV}= 1.9732705 \times 10^{-7} m[/tex] I think!

[tex]B = 1 eV^{2} = 1.44 \times 10^{-3} Teslas[/tex] I think!

## The Attempt at a Solution

So, now I get even MORE confused and try substituting stuff in, but don't get anywhere!

[tex]p = \frac{10^{9}}{1.6 \times 10^{-19} \times 1.97x10^{-7} \times 1.44\times10^{-3}}} = 2.2 \times 10^{37}[/tex]

or

[tex]p = \frac{10^{9} \times1.6 \times 10^{-19}}{ 1.97x10^{-7} \times 1.44\times10^{-3}}} = 0.56

[/tex]

This is clearly wrong, but I'm just getting COMPLETELY confused by all of this. Can anyone help me please?

Last edited: