is$17\mathrm{.}5.$ The jet flies with a velocity of $2000/,$ and its diffuser has an inlet cross section of $22$

$.$

Assume negligible diffuser exit velocity, adiabatic reversible flow, and consider air as ideal gas with

constant specific heats, $=0\mathrm{.}287$

$,$

$=$

$7$

$2$

$.$ Determine the mass flo