Steam is leaving a pressure cooker whose operating pressure is $20$ psia. It is observed that the amount

of liquid in the cooker has decreased by $0\mathrm{.}6$ gal in $45$ minutes after the steady operating conditions are

established, and the cross$-$sectional area of the exit opening is $0\mathrm{.}150$in$^(2).$ The properties of saturated

liquid water and water vapor at $20$ psia are

v$\_($f$)=0\mathrm{.}01683$f$($t$^(3))/($l$)$bm$,$v$\_($g$)=20\mathrm{.}093$f$($t$^(3))/($l$)$bm$,$u$\_($g$)=1081\mathrm{.}8$Bt$($u$)/($l$)$bm$,$ and h$\_($g$)=1156\mathrm{.}2$Bt$($u$)/($l$)$bm$.$

Determine the mass flow rate of the steam and the exit velocity.

The mass flow rate of the steam is

$\backslash$times $10^(-3)$lb$($m$)/($s$)$

The exit velocity is

$|$ f$($t$)/($s$).($Round the final answer to three decimal places.$)$