What factors limit the accuracy of a potentiometer and what was the objective of reversing the terminals of the cell

Which simple machine is not part of this compound machine? a. lever b. pulley c. inclined plane d. wheel and axle

The force needed to overcome static friction is usually less than that needed to overcome kinetic friction.true or false?

Imagine that the rightward current flows in the rod for a short time. as a result, what will the net charge on the right and left ends of the rod become? left end negative and right end positive left end negative and right end negative left end negative and right end nearly neutral left end nearly neutral and right end positive both ends nearly neutral