Question

the velocity of stationary wave is ​

Answer 1

If we consider a stationary wave on a taught string, the speed of the wave = (string tension * mass /unit length) ^ 0.5

wave speed = frequency * wavelength

and, wavelength = n * L/2

where n = 1,2,3 …(ie 1st, 2nd, 3rd harmonic) and L = string length

So the equations have to be mutually satisfied - ie only certain standing waves can form given the string length, tension and mass per unit length.

If there was no wave speed there would be no standing wave!

I hope this helps u

Nia here ❤️