Answer :
Wavelength of the waves in meters is 4m.
What is wavelentgh?
Wavelength is the distances between identically any points (adjacent cresta) in the adjacent cycles of a wave form signals propagates in spaces or along side a wire. In wireless system's, this lengths is usually specifies in meters (m), centimetres (cm) or millimetres (mm).
To solve this equation first we have to use the wave formulation -
V= fλ
As we know
v= velocity
f= frequency
λ=wavelength
We know the frequency and the velocity of the both elements which have good unit's. All we have to do is rearranged the equations and solve for λ.
λ= v/f
Let's calculate both the value to get our main answer-
λ= 7m/s / 28s^-1
λ= 4m
Thus, the wavelength is 4m.
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