Question

A sound wave has a frequency of 2 kHz and wavelength 35 cm. How long will it take to travel 1.5km?​

Answer 1

Answer:

35×2= 70

1.5km =1500

wavelength= 1500/70

22. 85

Answer 2

Answer:

Explanation:

Calculate the velocity of the wave using the formula: (frequency of wave)x(wavelength)=(velocity of wave)

In this case, the velocity is:

v = [2*(10^3)]x[35/100] m/s

v = 700 m/s

Now, we know that (velocity)=(displacement)/(time)

therefore, displacement of the wave or the distance travelled by it is given by:

d = 700*2 m =1400m