Question

Here's the problem I'm having trouble with, though it is based on the previous problem. I have included the previous problem and my answers to it below the one I need help with. I've tried it several times and keep getting the same (apparently wrong) answer, which is -9.96 x 10^-7j + 1.85 x 10^-7k for the magnetic field produced by the 7C particle. I then tried adding that to the magnetic field I computed in the previous problem and that didn't work either. At this point, I'm stumped.

Problem: At that same instant, a second particle of charge 7 C is momentarily located at the origin, moving along the positive x-axis with a speed of 1100 m/s. What is the total magnetic field at the target position from the previous problem?

Previous Problem: A particle of charge 2 C is momentarily located at the position (1,5,9) [all distances in meters]. The particle's velocity is

150i+500j+350k [in m/s]

What is the magnetic field vector due to the particle at the position (2,5,27)?

Correct, computer gets: 3.1E-07 T, -8.0E-08 T, -1.7E-08 T

Answer 1