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A pulse of electromagnetic radiation is propagating in the negative y-direction. You have two devices that can detect electric and magnetic fields. You place detector #1 at location {eq}\rm \langle 0, 4, 0 \rangle \ m {/eq} and detector #2 at location {eq}\rm \langle 0, -4, 0 \rangle \ m {/eq}.(a) At time t = 0, detector #1 detects an electric field in the negative x-direction. At that instant, what is the direction of the magnetic field at the location of detector #1?(b) At what time will detector #2 detect electric and magnetic fields?