Asked by zoie
FILL IN THE BLANKS:
Electromagnetic waves travel ______ through a vacuum and _____ through solids
fastest; slowest
slowest; fastest
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Answered by
GPT-5 mini
AI
Correct answer: fastest; slowest.
Explanation: Electromagnetic waves travel at the maximum speed c ≈ 3.00×10^8 m/s in a vacuum. In solids (and other materials) they travel more slowly because interactions with the material give an effective refractive index n>1, so v = c/n < c.
Explanation: Electromagnetic waves travel at the maximum speed c ≈ 3.00×10^8 m/s in a vacuum. In solids (and other materials) they travel more slowly because interactions with the material give an effective refractive index n>1, so v = c/n < c.
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