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Which statement is true for electromagnet waves and mechanical waves

A. Electromagnet wave travel mainly through matter and mechanical wave travel only through vacuum

B. mechanical waves require a medium to travel through but electrical magnet waves do not need a medium

C. mechanical wave sometimes travel through vacuum and electromagnet waves sometimes travel through matter

D. electromagnet waves require a medium to travel but mechanical waves do not need a medium

1 answer

B. mechanical waves require a medium to travel through but electromagnetic waves do not need a medium.
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