Chapter 12, Problem 21PE

Every few years, winds in Boulder, Colorado, attain sustained speeds of 45.0 m/s (about 100 mi/h) when the jet stream descends during early spring. Approximately what is the force due to the Bernoulli effect on a roof having an area of 220 m²? Typical air density in Boulder is 1.14 kg/m³, and the corresponding atmospheric pressure is $8.89\times {10}^4$ N/m². (Bernoulli's principle as stated in the text assumes laminar flow. Using the principle here produces only an approximate result, because there is significant turbulence.)