Question

A sound wave has a frequency of 4 khz and a wavelength of 40 cm. The time taken by the sound wave to travel a distance of 3.2 km is

Answer 1

Answer:

distance = 3.2 km  

frequency = 4 hz  

ladma = 0.4 m

velocity = 0.4×4 = 1.6 m/sec  

time = d/v  

3.2/1.6 = 2sec

Explanation: