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26. Electromagnetic radiation including light travels fastest in

(1 point)
Seawater
fresh water
solids
empty space/vacuum

User Yrlec
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2 Answers

4 votes
Empty space/vacuum is the answer
User Andreasgk
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5 votes

EM waves travel fastest in a vacuum because there are no particles to block their path.

User Artur Korobeynyk
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