The air velocity in a duct is measured by a Pitot$-$static probe connected to a differential pressure gage. If the air is at $13\mathrm{.}4$ psia absolute and temperature is $70F$ and the reading of the differential pressure gage is $0\mathrm{.}14,$ determine the air velocity. The gas constant of air is $R=0\mathrm{.}3704a-f\frac{t^3}{l}bmR.$

The air velocity is $f\frac{t}{s}.$