A differential pressure gage is connected to a Pitot-static tube in a wind tunnel. In the wind tunnel test, the gauge indicates a ∆P of 712Pa. What is the air velocity in the tunnel in m/s? The...

A differential pressure gage is connected to a Pitot-static tube in a wind tunnel. In the wind tunnel test, the gauge indicates a ∆P of 712Pa. What is the air velocity in the tunnel in m/s? The pressure and temperature in the tunnel are 98kPa absolute and 23°C, respectively. Air properties at 20°C is given:

Rair =287J/kg K.