Question

a soundwave has a frequemcy of 1.5 kg hertz and wavelength of 20 cm .How long will it take to travel 1 km.

Answer 1

Speed = Frequency × Wavelength
= 1.5 × 10³ Hz × 0.2 m
= 300 m/s

Time = Distance / Speed
= 1 × 10³ m / (300 m/s)
= 3.33 seconds

It’ll take 3.33 seconds for sound to travel 1 km