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The word back is up there!!!
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Feb 16, 2019
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The word back is up there!!!
Physics
middle-school
Victor Barrantes
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Mech waves: travel is faster as density of matter increases
EM waves: can pass through matter, travel is slowed as density of matter increases
I think that's all, tell me if I missed anything.
Mark Whitfield
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Feb 20, 2019
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