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Two sinusoidal waves with the same amplitude and wavelength travel through each other along a string that is stretched along an \( x \) axis. Their resultant wave is shown twice in Fig. 16-53, as the antinode \( A \) travels from an extreme upward displacement to an extreme downward displacement in \( 6.0 \mathrm{~ms} \). The tick marks along the axis are separated by \( 15 \mathrm{~cm} \); height \( H \) is \( 1.20 \mathrm{~cm} \). Let the equation for one of the two waves be of the form \( y(x, t)=y_{m} \sin (k x+\omega t) \). In the equation for the other wave, what are (a) \( y_{m} \), (b) \( k \), (c) \( \omega \), and (d) the sign in front of \( \omega \) ?
Figure 16-53
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