An electron has velocity v with arrow = (25i hat + 45j) km/s as it enters a uniform magnetic field b with arrow = 64i hat μt.
(a) what is the radius of the helical path taken by the electron? mm
(b) what is the pitch of that path? mm
(c) to an observer looking into the magnetic field region from the entrance point of the electron, does the electron spiral clockwise or counterclockwise as it moves?
i. clockwise
ii. counterclockwise