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Grade: 9 
        
An echo repeats two syllables.If the velocity of sound is 330 m/s, then the distance of the reflecting surface is? 
3 years ago

Answers : (1)

venkatesh
34 Points 
							Answer is 66mBecause velocity of sound is 330 m/s so the minimum distance required to hear sound is 330/10=33mFor one syllable 33m so for two syllables 66m
3 years ago
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