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An excited hydrogen atom releases an electromagnetic wave to return to its normal state.

An excited hydrogen atom releases an electromagnetic wave to return to its normal state. You use your futuristic dual electric/magnetic field tester on the electromagnetic wave to find the directions of the electric field and magnetic field. Your device tells you that the electric field is pointing in the negative x direction and the magnetic field is pointing in the positive y direction. In which direction does the released electromagnetic wave travel?


+x direction

-x direction

+y direction

-y direction

+z direction

-z direction


science   physics   
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Answer #1

Given, direction of ² = negative. negative -x-direction, direction of B = positive -y-direction We know, i = (Êx B ) / where

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