A $1-$in$.$ sharp$-$edged orifice in the end of a $6-$in$.$ pipe $($Fig$.57)$ discharges air into the atmosphere at a temperature of $80\backslash$deg F$.$ U$-$tube containing water shows a difference z in water levels of $8$ in$.$ while y $=3$ ft$.$ If C$,$ based on unit weight of air at point $1$ in the pipe, is $0\mathrm{.}597,$ compute the discharge in cubic feet per minute. Provide illustration and show complete solution. Final answer given is Q $=36\mathrm{.}8$ cfs$.$