You are standing 17 m away from a wall and shouting facing it. Calculate the time to hear echo.
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Answer:
0.1 seconds
Explanation:
(Taking speed of sound to be 340 m/s)
Time taken to hear the echo = 2d/s
= 2 * 17/ 340
= 34/340
= 0.1 seconds
Hence, it takes 0.1 seconds to hear the echo.
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