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What causes a sound wave to echo in an empty house?
A. Transmission of waves from a person speaking
B. Reflection of waves off smooth walls
C. Refraction of waves by a person speaking
D. Absorption of waves by rough walls​

Respuesta :

tama2175

Answer:

I'd say the answer is B. reflection of waves off smooth walls

Explanation:

Answer: B

Explanation: sounds will continue to bounds between the hard reflective surfaces until it lost all its energy

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