(a) At what speed (in m/s) will a proton move in a circular path of the same radius as an electron that travels at 8.00 x 10 m/s perpendicular to the Earth's magnetic field at an altitude where the field strength is 1.25 x 10- T? m/s (b) What would the radius (in m) of the path be if the proton had the same speed as the electron? m (c) What would the radius (in m) be if the proton had the same kinetic energy as the electron? m (d) What would the radius (in m) be if the proton had the same momentum as the electron? m