Physics, 25.08.2019 20:50 rosehayden21

An echo repeats two syllables. if the velocity of sound is 330 m/s , then the distance of the reflecting surface is-
a) 66.0 m
b) 33.0 m
c) 99.0 m
d) 16.5 m

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An echo repeats two syllables. if the velocity of sound is 330 m/s , then the distance of the reflec...