18. Waves & Sound

Write the mathematical representation of the wave graphed in the following two figures.

A transverse wave is represented by the following function: $y=\(\left\)(18\(\operatorname{cm}\)\(\right\))\(\sin\[\left\)[2\(\pi\]\left\)(\(\frac{x}{2\operatorname{cm}\)}-\(\frac{t}{5s}\)+\(\frac\)14\(\right\))\(\right\)]$. What is the phase angle of this wave?

The function for some transverse wave is ? = (0.5 m) sin [(0.8 m⁻¹)x − 2?(50 Hz)t + π/3]. What is the transverse velocity at t=2 s, x=7 cm? What is the maximum transverse speed? The maximum transverse acceleration?