RNBWBlight7393 RNBWBlight7393

21-03-2024
Physics

contestada

What is the minimum distance between reflecting surface and listener to hear an echo, if the velocity of
sound in air is 330 ms⁻¹ and persistence of hearing is 0.1 second.
A.15 m
B.16.5 m
C.18.5 m
D.20 m

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