Consider the following configurations.

a. A test charge q is brought to a point A a distance r from the center of a sphere having net charge +Q.
b. A test charge 2 q is brought to a point B a distance 2r from the center of the sphere. Compared with the electrostatic potential at A, the electrostatic potential at B is:

i. same
ii. greator
iii. smaller

Aman throws a football straight into the air. as it rises, it slows down. which type of energy is the football gaining?

How would a small bar magnet be oriented when placed at position x?

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.