Respuesta :

Answer:

Given

Wavelength = 4 m

Time (t) = 0.5 sec

Speed ( S) = ?

Explanation:

first we should calculate the frequency

so Frequency

= 1/t

= 1/ 0.5

=2 Hertz

Now Speed = wavelength * frequency

= 4 * 2

= 8 m/s

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