Question

3. Why can you not hear the echo if you stand 10 m away from a wall and shout towards it?​

Answer 1

Answer:

To hear the echo we need to stand at least 17 m away from the object. This is because, distance travelled by sound in 1/10 second = speed x time = 340 m/s x (1/10) s = 34 m. Thus, we cannot hear the echo if you stand 10 m away from a wall and shout towards it

Explanation:

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