Which Of The Following Statements Are True Concerning Electromagnetic Waves In A Vacuum?

(Correct Answer Below)

Which Of The Following Statements Are True Concerning Electromagnetic Waves In A Vacuum?

1. Electromagnetic waves traveling in a vacuum are longitudinal waves. 2. When electromagnetic waves travel in vacuum, there is a definite, constant ratio between the magnitudes of the electric and magnetic fields. 3. Electromagnetic waves travel in a vacuum with a definite and unchanging speed. 4. Electromagnetic waves can travel in a vacuum only because a medium prohibits the forward propagation of the electric and magnetic fields.
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2. When electromagnetic waves travel in vacuum, there is a definite, constant ratio between the magnitudes of the electric and magnetic fields. 3. Electromagnetic waves travel in a vacuum with a definite and unchanging speed.

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