A firehose with a nozzle connected by a flange has a mass flow rate of $29\mathrm{.}8k\frac{g}{s},$ entrance velocity of $4\mathrm{.}4\frac{m}{s},$ exit velocity of $13\mathrm{.}2\frac{m}{s}$ and p $1$ of $631,377$ Pa which acts on an area of $7\mathrm{.}854e-3m^2.$ What is the magnitude of the total force $F_B$ on the flange in Newtons $($absolute value only$).$ Don't worry about the $\frac{1}{2}{F}_B$ split between the $2$ bolts as shown. Just Calculate $F_B.$

$($b$)$