A positively charged Lithium ion (2 electrons, 3 protons, and 3 neutrons) is accelerated in a vacuum between two parallel plates with a potential difference of 3.0 x 102 V between them. The ion then moves into a uniform external field with a strength of 0.20 T [into the page]. See the diagram below (not to scale):
(a) Determine the speed of the ion as it leaves the parallel plates. (Hint: consider the number of excess or deficit electrons of the ion)
(b) Determine the magnetic force (magnitude and direction) experienced by the ion as it enters the magnetic field.
(c) What is the radius that of the motion of the ion within the field?
Thank you!