Help Needed: Magnetism and Electron/Alpha Particle Motion

[zindra]

Homework Statement

Hi guys. I'm stuck at a question that has to do with magnetism and I would really appreciate some help!

The question is:

"An electron and an alpha particle are in a magnetic field and moves in circles with the same tangential speed. Calculate the ratio between the number of revolutions per second that the electron does compared to the alpha particle."

(sorry if it's not 100% correct, since english is not my first language, translated the question from another language...)

Thanks! :)

 

[Mandeep Deka]

number of revolutions per second is essentially the frequency...

so if u do know the equation for the frequency of a particle in a magnetic field... you should be able to determine the ratio of frequencies for the alpha particle and the electron!

 

[zindra]

number of revolutions per second is essentially the frequency...

so if u do know the equation for the frequency of a particle in a magnetic field... you should be able to determine the ratio of frequencies for the alpha particle and the electron!

hmm, ok.. how do I find out that equation then?