Question

A sound wave has a frequency of 2kHz and wavelength of 45 cm, it takes 4

seconds to travel. Calculate the distance it travels in 4 seconds?​

Answer 1

Answer:

3600m distance

Explanation:

frequency = 2KHZ = 2000 hz

wavelength= 45cm=0.045m

time taken = 4 sec

speed = f×w

2000 × 0.45

speed =900 m/s

speed = d/t

= 3600 m

Answer 2

Frequency = 2 kHz= 2000 Hz

Wavelength= 45 cm = 0.45 m

Time= 4 s

Velocity = Wavelength * Frequency = 0.45 * 2000 = 900 m/s

Distance = Velocity * Time = 900 * 4 = 3600 m

its the answer...