Thank you in advance

1. In a mass spectrometer, an ion drifts in a region ol space between two capacitor plates with separation d = 1 00em. The ion travels with speed 2.00x 10 mis in a uniform magnetic field, with strenth B - 0.5007 , directed into the page! (a) What should be the voltage on the plates to make an ion traveling at that speed go ? a straight line toward a (non conducting ) slit? (b) What is the radius of the circular path after exiting the slit if the ion is singly charged helium with m -6.65x10 ko? HINT: Centrepital force in circular motion is F la