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Physics 26 Online
OpenStudy (anonymous):

What are sound reverberations? A.increased wave frequencies B.when a sound wave’s amplitude is increased C.noise that is harmful to human health D. multiple sound wave reflections in a room

OpenStudy (anonymous):

D. multiple sound wave reflections in a room

OpenStudy (shayaan_mustafa):

it is echo you can say that. so answer is D

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