ANSWER
[tex]\begin{equation*} 2.0\text{ }m \end{equation*}[/tex]
EXPLANATION
To find the wavelength of the wave, apply the formula for the speed of a wave:
[tex]v=\lambda *f[/tex]
where λ = wavelength
f = frequency
Therefore, by substituting the given values into the equation and solving for λ, the wavelength of the wave is:
[tex]\begin{gathered} 10=\lambda *5 \\ \Rightarrowλ=\frac{10}{5} \\ λ=2.0\text{ }m \end{gathered}[/tex]
That is the answer.
