A singly charged ion of unknown mass moves in a circle of radius 13.5 cm in a magnetic field of 2.9 T. The ion was accelerated through a potential difference of 3.0 kV before it entered the magnetic field. What is the mass of the ion? (hint: EPE=Vq=KE)

Question

A singly charged ion of unknown mass moves in a circle of radius 13.5 cm in a magnetic field of 2.9 T. The ion was accelerated through a potential difference of 3.0 kV before it entered the magnetic field. What is the mass of the ion? (hint: EPE=Vq=KE) 
  kg

bobpursley · Answer

Vq=1/2 m v^2 v= sqrt 2 Vq/m centripetal force=magneticforce 1/2 m v^2/r= Bqv solve for mass. solve for m.

Anonymous · Answer

what is little v and Q