A one-fiftieth scale model of a military airplane is tested at 1020 m/s in a wind tunnel at sea-level conditions. The model wing area is 180 cm2 . The angle of attack is 3 degrees. (a) List all relevant dimensionless numbers. (b) If the measured model lift is 860 N, what is the prototype lift

You've already seen the value of 9.8 in this lesson. what's this value called? what quantity does it represent?

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.

In a series circuit the __ is the same at every point