In some wind tunnels the test section is perforated to suck out fluid and provide a thin viscous boundary layer. the test section wall in fig. p3.33 contains 1200 holes of 5-mm diameter each per square meter of wall area. the suction velocity through each hole is vs 5 8 m/s, and the testsection entrance velocity is v1 5 35 m/s. assuming incompressible steady flow of air at 208c, compute (a) v0, (b) v2, and (c) vf, in m/s.