Which of the following would cause the force of kinetic friction to increase? A. A decrease in the normal force
B. An increase in us
C. A decrease in lk
D. An increase in the normal force

How would you place two electrons on a sphere of radius r so that the electrostatic potential energy is minimized. how would you place three electrons to solve the same problem.

In a voltaic cell, electrons flow from the (positive/negative) to the (positive/negative) terminal.

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?