3. A doubly charged ion of mass 2.2 x 10 26kg is fired into the velocity selector of a mass spectrometer perpendicular to both, the electric and the magnetic fields. The setup is pictured in the figure below. The electric field is & = 1.8 x 104 V/m. The magnetic field is B = 0.30 T. The particle passes through the velocity selector undeflected and enters the magnetic field of the mass spectrometer. a) Determine the speed of the charged particle. b) Determine the radius of the path of the charged particle in the magnetic field. P B . (X (X X X X X XX X X XXXXX X X XXXXX (X velocity selector X