Question

a sound wave has a frequency of 300 and wavelength 15 cm how much time will it take to travel 1 kilometre​

Answer 1

Answer:

Explanation:

Speed=frequency x wavelength

V=300*15/100=45m/s

1s--45m

1m= q/45 s

10000m=1000/45

= 22.22secs

Answer 2

Answer:

Data:

Given,

Frequency = f = 300hz

Wavelength = λ = 15cm = 0.15m

Distance = S = 1km = 1000m

Time taken by the wave to reach the distance 1000m = t = ?

Solution:

Since we know that :-

V=fλ

By using the above formula we will find the velocity(v):-

V=300×0.15

V =45m/s

So as we know that:-

V=S/t

By substituting the value in above equation:-

t=1000/45

t=22.2 seconds