Question

The frequency of a sound wave has 1000 Hz and a wavelength of 34 cm. How long will it take to travel 1 km?

Answer 1

Answer:

The answer is 2.94 seconds .

Explanation:

We know that  

Velocity = frequency x wavelength

Given data:

Frequency = 1000 Hz

Wavelength = 34 cm 34/100 = 0.34 m

Velocity = 1000 Hz x 0.34 m

Velocity = 340 ms-1

Distance = 1000 m

Formula of velocity  

Velocity = distance / time

Time = distance / velocity

Time, t = 1000 m / 340 ms-1

t =  2.94 seconds

Answer 2

Answer:

velocity =frequency x wavelength

= 1000 x. 0.34

=340m/s

here we have to found time hence we will use

velocity = distance /time

340 = 1000/time

ans = 2.94