Question

answer this plzz really urgent

Answer 1

time =4s

Speed in air = 344m/s

Distance= Speed * Time /2       (Because its echo)

= 344*4/2

=688m

Answer 2

Given :

Time = 4s

We know that speed of sound in air is 344m/s.

Since it is an echo, speed = (2*distance)/time

OR

Distance = (Speed * Time)/2

Substituting the given values, we obtain:

D = 344 * 4/2

D = 344 * 2

D = 688m

Therefore, the sound is produced 688 meters away from the child.

Hope this helped!

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