Question

A wave travels 40 meters across a field of grass in 4 minutes. What is the speed of the wave? 0.17 m/s 10 m/s 240 m/s 320 m/s

Answer 1

0.17 m/s would be your answer

Answer 2

Answer : The speed of the wave is 0.17 m/s

Explanation :

It is given that,

Wavelength of a wave, λ = 40 m

Time taken, t = 4 minutes = 240 seconds

Frequency, $\nu=\dfrac{1}{T}=\dfrac{1}{240}\ Hz$

Speed of the wave = frequency × wavelength

v = υ × λ

$v=\dfrac{1}{240}\times 40$

v = 0.167 m/s

or v = 0.17 m/s

The speed of the wave is 0.17 m/s

Hence, this is the required solution.