Determine the power spectral density of the wind at a site where the turbulence intensity is 15% and the hub height is 90 m, and the annual mean

Determine the power spectral density of the wind at a site where the turbulence intensity is 15% and the hub height is 90 m, and the annual mean windspeed is 7 m/s

A gas is contained in a vertical cylinder 3 inches in diameter under a piston whose mass is 50 lbm. The local gravitational acceleration is 32.4 ft/s2 and the atmospheric pressure acting on the outside of the piston is 14.7 psia. What is the absolute pressure of the gas in the cylinder in psia? What is the absolute pressure of the gas in Pa? What is the gage pressure of the gas in Pa?

2 3Area is 0.04908 ft 24 12 Force due to postion weight is 50 lbm 32.4 ft/sec 2 1620 lbf1620 lbfklbfPressure is 39.531 20.04908ftlbf1 2 47.880 PaftGuage pressure is 39.531 47.880...