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nikitadnepr [17]
4 years ago
13

An echo repeats two syllables.If the velocity of sound is 330 m/s , then the distance of the reflecting surface is-

Physics
1 answer:
Andreas93 [3]4 years ago
6 0
<span>Well, the main point you should remember is that we only can hear  20hz that leads to T=0.05sec which means that the distance leads us to velocity x time.
When calculating, you get 330 * 0.05=16.5 .
The number which you got from the previous step has to me multiplied 4 times (4 minutes) and you will get the answer you need - </span><span>a) 66.0 m.
Do hope it will help you! Regards!</span>
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