a sound wave has a frequency of 2KHz and wavelength 35 cm.how long it will take to travel 1.5km?
How much time will it take by a sound wave having a frequency of 4 KHz and wavelength 40 cm to travel 4 km?
(a) Name four ways in which sound can be produced.
(b) Calculate the speed of a sound wave whose frequency is 2 kHz and wavelength 65 cm.