A long, thin, straight wire of length L has a positive charge Q distributed uniformly along it. Use Gauss' law to find the magnitude of the electric field (E) created by this wire at a radial distance r away from the wire.

Apositive point charge q is fixed on a very large horizontal frictionless tabletop. a second positive point charge q is released from rest near the stationary charge and is free to move. which statement best describes the motion of q after it is released? assume q stays on the table

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.

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?