Suppose you are in charge of a toll bridge that costs essentially nothing to operate. the demand for bridge crossings (q) is given by p = 15 – (1/10) q. the number of bridge crossings if the toll price were set to zero (p = $0) is and the loss in consumer surplus (cs) associated with a bridge toll of $5 (p = $5) is

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.