(Positive z out of page) 1. In a linear accelerator, protons are accelerated from rest through a potential difference of 50,000 V to a maximum speed. The protons then travel straight until they reach an area with a magnetic field. a. If you had to find the velocity of the proton when it exits through the hole in the negative plate, what physics concept would you use to solve this problem? (A past topic) b. What equation(s) would you use