$22.$ A transverse sinusoidal wave is traveling on a string with a speed of $300\frac{m}{s}.$ If the wave has a frequency

of $100Hz,$ what is the phase difference between two particles on the string that are $85cm$ apart'? $($Ans: $1\mathrm{.}8$rad $)$

is this Ru'e alarys works with two particle

move instermously in string

$=2+\frac{x}{}$longrightarrow$=85cm$