An electron and a proton are each moving at 735 km/s in perpendicular paths as shown in...

An electron and a proton are each moving at 735 km/s in perpendicular paths as shown in Fig. E28.8. At the instant when they are at the positions shown, find the magnitude and direction of (a) the total magnetic field they produce at the origin; (b) the magnetic field the electron produces at the location of the proton; (c) the total electric force and the total magnetic force that the electron exerts on the proton.