At a particular instant a proton is at the origin, moving with velocity < 3 x 104, -2 x 104, -5 x 10* > m/s. At this instant: (a) What is the electric field at location < 4 x 10-3, 2 x 103, 3 x 103 m, due to the proton? > N/C (b) What is the magnetic field at the same location due to the proton? B=<
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