Question $17,$ chap $116,$ sect $12.$

part $1$ of $4,10$ points

A traveling wave propagates according to the expression

$y=(4\mathrm{.}3cm)sin[(1\mathrm{.}42c{m}^{-1})x-(4\mathrm{.}08s^{-1})t]$

where $x$ is in centimeters, and $t$ is in seconds.

Determine the amplitude of the wave.

Answer in units of cm$.$