At t = 0, electron 1 is shot out of an accelerator at a speed of 2.9 × 10^3 m/s. at t = 1.0 μs, electron 2 is shot out of the accelerator and travels on a path that is parallel to and 10 mm below the path of electron 1. the speed of electron 2 is 6.8 × 10^3 m/s. at t = 3.0 μs. what is the magnitude of the magnetic field at a point that is 3.0 mm ahead of electron 1 and 5.0 mm below it? assume that the magnetic forces the electrons exert on each other for the 2.0 μs before you make your calculations do not alter the electrons' paths significantly. express your answer with the appropriate units. b = t