Calculate the energy of the proton

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Homework Statement



A proton moves in a circular path perpendicular to a 1.15T magnetic field. The radius of its path is 9.3mm. Calculate the energy of the proton in eV.

Homework Equations



F=ma=mv^2/r, F=qvB

The Attempt at a Solution



F=ma=mv^2/r=qvB

mv/r=qB
v=qBr/m=1.6*10^-19*1.15*0.0093=1022833

F=qvB=1.6*10^-19*1022833*1.15=1.882*10^-13

I don't know how to convert F to the energy...
Well, first of all, am I correct so far?
 

Answers and Replies

  • #2
Hootenanny
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Science Advisor
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Well, you've calculated the velocity. If the proton has velocity its moving, so what type of energy does it have?
 

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