Question

A sound wave has a frequency 1200 hz and wavelength 50 cm. What distance will this wave travel after 20s

Answer 1

f = frequency of sound wave = 1000 Hz

λ = wavelength of sound wave = 50 cm = 0.50 m

V = speed of sound wave

speed of sound wave is given as

V = f λ

inserting the values

V = 1000 x 0.50

V = 500 m/s

D = distance traveled = 500 m

t = time taken by sound wave

time taken by sound wave is given as

t = D/V

inserting the values

t = 500/500

t = 1 sec