Question

please please answer this question

Answer 1

4 vibrations = 1sec

1 vibration =1/4 sec

6 vibrations =6/4 sec

V = 340m/s

d=Vt/2

= 340*6/4*2

= 2040/8

=255m

Answer 2

Time taken for 1 vibration =1/5s

Time taken for 8 vibration =8/5s

We know,

2d=vt

Therfore,

D=vt/2(where d=distance between the observer and the cliff)

V=velocity of sound

T=time taken for the sound to go and return

D=(340*8/5*2)m

D=272m

So the distance between the cliff and observer is 272