Posted by Jamie on .
An electron, moving with a speed, 6.8 km/s, enters a magnetic field that has a strength of 6.9 T. The magnetic force on the electron is perpendicular to the electron's velocity. Determine the radius of the resultant path of the electron.

physics 
bobpursley,
centripetal force=magnetic force
mv^2/r=Bqv
solve for r.