Consider an experimental setup where charged particles $($electrons or protons$)$ are first accelerated by an electric field and then injected into a region of constant magnetic field with a field strength of $0\mathrm{.}75$ T$.$

What is the potential difference, in volts, required in the first part of the experiment to accelerate electrons to a speed of $5\mathrm{.}9107$ m$/$s$?$

Find the radius of curvature, in meters, of the path of a proton accelerated through this same potential after the proton crosses into the region with the magnetic field.

What is the ratio of the radii of curvature for a proton and an an electron traveling through this apparatus?