Question

A mountaineer shouts her name in the valley. half a second later she hears the echo .how far away is the rock which reflecting her voice?(speed of sound in air = 343 m/s​

Answer 1

Answer:

Speed of sound in air = v = 330 m/s

Time (t) it took for the mountaineer to hear her echo = (1/2) sec

Let us assume that the distance between the mountaineer and the rock was d.

Distance = Speed ×× Time

2d = v ×× t

2d = 330 ×× (1/2)

d = 330 / 4 = 82.5 m

Thus, the rock that reflected her voice was 82.5 m away from her.

Answer 2

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t = 0.5

S = Distance × time

S = 343 x 0.5

S = 171.5m

= 171.5/2 (distance till it reaches the rock is calculated)

= 85.75m

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⚘Inshaan69⚘