To obtain any points for each problem, you must include all relevant formulas, justil'ie'ations1 calculations, substitutions, reasoning, and diagrams as needed. You must organize the steps of your work to be neat and clear. ' A proton starting from rest travels through a potential of 1.0 kV and then exits and moves in the xy-plane making a Stileangle with the Xraxis. It runs into a uniform magnetic field B = 40 G k. (3) Calculate the force (magnitude and direction) that acts on the proton upon entering the magnetic field. (b) What is the radius of the protou's resulting orbit? (mp = 1.67x10'27 kg, e' = 1.60x10'19 C). (3 points)