Q$5)$ Determine the flowrate through the Venturi meter shown in Figure if ideal conditions exist. Q$6)$ Helium flows through a $0\mathrm{.}30-$m$-$diameter horizontal pipe with a temperature of $20^$C and a pressure of $200$ kPa $($abs$)$ at a rate of $0\mathrm{.}30$kg $/$ s$.$ If the pipe reduces to $0\mathrm{.}25-$m diameter, determine the pressure difference between these two sections. Assume incompressible, inviscid flow.