Physics - Wave on String Question with Solution | TestHub

For $y=f(\omega t-kx)$: $y_t=\omega f\prime$, $y_x=-kf\prime$, so $\frac{1}{\omega }{y}_t=-\frac{1}{k}{y}_x$ (B). Also $y_{tt}={\omega }^2{f}^{\prime \prime }$ and $y_{xx}=k^2{f}^{\prime \prime }$, so (A). The signs in C and D do not fit this wave.