Question

a sound wave has a frequency of 1200 hertz And wavelength 50 cm what distance will this wave travel after 20 sec?

Answer 1

Answer:

12000 m (12 km)

Explanation:

Given,

Frequency = 1200 hertz

Wavelength = 50 cm = 0.5 m

Time traveled = 20 sec

Now,

Velocity of Sound  =  Wavelength * Frequency

Velocity = 0.5 * 1200 = 600 m/s

Now,

Distance = Velocity * time

Distance covered = 600 * 20 = 12000 m = 12 km