Answer:
The velocity of wave=2.5 m/s
Explanation:
We are given that
The distance between successive wave crest=[tex]\lambda=12m[/tex]
Time =[tex]2.8 s[/tex]
We have to find the the velocity of wave.
Frequency of wave=[tex]\nu=\frac{1}{T}=\frac{1}{4.8} s=0.2083 Hz[/tex]
The relation between frequency, wavelength and velocity is given by
[tex]\lambda=\frac{v}{\nu}[/tex]
[tex]12=\frac{v}{\frac{1}{4.8}}[/tex]
[tex]v=12\times \frac{1}{4.8}=2.5 m/s[/tex]
Hence, the velocity of wave= 2.5 m/s
