The linear density of a string is $1\mathrm{.}9{10}^{-4}k\frac{g}{m}.$ A transverse wave on the string is described by the equation $y=(0\mathrm{.}035m)sin[(2\mathrm{.}1m^{-1})x+(28s^{-1})t]$

What are $($a$)$ the wave speed and $($b$)$ the tension in the string?

$($a$)$ Number

Units

$($b$)$ Number

Units