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Noreturn
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Homework Statement
The cyclotron radius of a proton moving at 3.0*10^5 m/s perpendicular to a 5*10^-6T magnetic filed is:
Homework Equations
r=mv/qB
The Attempt at a Solution
So plug and chug:
r= (1.6*10^-27)(3*10^5)/(1.602*10^19)(5*10^-6)
r=625.5m
However they have it down as .625m. Where do I get the sig figs wrong at?