Physics - Sound Wave Question with Solution | TestHub

The respective displacements (in $\text{cm}$) of two particles of a medium disturbed by a wave propagation at $x_1=0$ and $x_2=1 \text{cm}$ are given by the equations:$y_1=2\sin 3\text{πt}$
$y_2=2\text{sin}(3\pi t-\pi /8)$

The speed of the wave is