9 One charge of (+5.0C) is placed at exactly x=0, and a second charge (+7.0C) at r= 100 cm. Where
10 can a third be placed so as to experience were net force due to the other two?
ofisad 12. They are 3 m apart. (a) Compute the​

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.