The jet pump in Fig. P3.36 injects water at U1=40 m/s through a 3-in-pipe and entrains a secondary flow of water U2=3 m/s in the annular region around the small pipe (D1=3 in, D2=10 in). The two flows become fully mixed downstream, where U3 is approximately constant. For steady incompressible flow, compute U3 in m/s.