Two species of singly charged positive ions of masses 20x10^-27 kg and 23.4x10^-27 kg enter a magnetic field at the same location with a speed of 1x10^5 m/s. If the strength of the field is .2 T, and they move perpendicularly to the field, find their distance of separation after they complete one half of their circular path. (answer: 2.12 cm)
I am stump. How do I solve this problem with what I am given? Thanks!