The speed of sound in water medium is 1400 m/s. If a man can hear an echo produce by a rock under water. What is the distance between the man and rock?
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Answer:140
Explanation:
When a echo is produced, the sound always reflect back from the surface in the time of 0.01 s
Or, 0.01=1/10
So,
Speed=distance/time
=> distance= speed × time
=>Distance=1400×1/10
= 140 (Answer)
*HOPE IT HELPS*
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