There is a force between two changes if the distance between the two charges is doubled by what factor does the force between them change?

What is the final velocity of the initial velocity of 25 and -50?

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.

The junction rule describes the conservation of which quantity? note that this rule applies only to circuits that are in a steady state.