A proton and an electron are held in place on the x axis.
Chapter 18, Problem 18.169(choose chapter or problem)
A proton and an electron are held in place on the x axis. The proton is at x d, while the electron is at x d. They are released simultaneously, and the only force that affects their motions significantly is the electrostatic force of attraction that each applies to the other. Which particle reaches the origin first?
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer