The nozzle shown in Fig. P3.84 has two water manometers to indicate the static pressures at sections 1 and 2 . The diameters \(D_{1}\) and \(D_{2}\) are 8 in. and 2 in., respectively. Air flows through the nozzle, and the air and water temperatures are \(60^{\circ} \mathrm{F}\). Find the air volume flow rate. Assume constant density and inviscid flow. Neglect elevation changes.

Figure P3.84

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Patm = 14.7 psia D in. D T h = 8.0 in.