Answer:
The wavelength of a wave is 1.72 m.
Explanation:
Given,
Frequency, f = 0.9 Hz
Speed of a wave, v = 154.9 cm/s = 1.549 m/s
The speed of a wave is given by :
[tex]v=f\lambda[/tex]
[tex]\lambda=\dfrac{v}{f}\\\\\lambda=\dfrac{1.549\ m/s}{0.9\ Hz}\\\\\lambda=1.72\ m[/tex]
So, the wavelength of a wave is 1.72 m. Hence, this is the required solution.