Solve the all parts of given problem:

Problem: A proton having an initial velocity of 16.2i hat Mm/s enters a uniform magnetic field of magnitude 0.260 T with a direction perpendicular to the proton's velocity. It leaves the field-filled region with velocity -16.2j hat Mm/s.

Part A: Determine the radius of curvature of the proton's path while in the field.

m

Part B: Determine the distance the proton traveled in the field.

m

Part C: Determine the time interval for which the proton is in the field.

ns

I need help to find the radius of curvature of the proton's path while in the field.