Question #16156

A bat ﬂying in a cave emits a sound and

receives its echo 0.2 s later.

How far away is the cave wall? Assume the

speed of sound to be 340 m/s.

Answer in units of m

receives its echo 0.2 s later.

How far away is the cave wall? Assume the

speed of sound to be 340 m/s.

Answer in units of m

Expert's answer

it will take only half of the time for sound wave to travel to the wall, hence, the distance is

s=vt=340*0.1 = 34m

s=vt=340*0.1 = 34m

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