Charge q1q1 is distance rr from a positive point charge qq. Charge q2=q1/3q2=q1/3 is distance 2r2r from qq. What is the ratio u1/u2u1/u2 of their potential energies due to their interactions with qq?.

Who was the first scientist to measure speed as distance over time?

Which accounts for an increase in the temperature of a gas that is kept a constant volume

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.