Consider a low-speed wind tunnel (see Fig. 4.15) that is a constant width of 2 m throughout its length (i.e., each cross section of the tunnel is a rectangle of width 2 m). The entrance and exit heights of the nozzle are 4 m and 0.5 m, respectively. The airflow velocity in the test section is 120 mph. Calculate the airflow velocity in m/sec at the entrance to the nozzle.
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