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Sagot :
Wavelength is usually denoted by the Greek letter lambda (λ); it is equal to the speed (v) of a wave train in a medium divided by its frequency (f): λ = v/f.
So 8/20=.4
I hope it’s right
So 8/20=.4
I hope it’s right
Wave speed (v) will be 160 m/s
What is Wave speed ?
Wave speed is the distance the wave travels in a given amount of time, such as the number of meters it travels per second or Wave speed is the distance travelled by a wave per unit time. It is the speed with which a disturbance of the particle like a crest/ trough, compression / rarefaction propagates through a medium. Its SI unit is m/s.
The Wave speed formula which involves wavelength and frequency is given by: v = f λ Where, v is the velocity of the wave and f is the frequency of the wave.
Wave is a disturbance in which there is a transfer of energy from place to place. The particles of the medium vibrate during wave propagation. In the transverse wave, the particles vibrate up and down and are perpendicular to the direction of wave propagation. In a longitudinal wave, the particles vibrate along the direction of wave propagation.
wave speed = frequency * wavelength
= 20 * 8 = 160 m/s
wave speed is 160 m/s
To learn more about wave speed here
https://brainly.com/question/7552590?referrer=searchResults
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