The nucleus of a (125)^Xe atom (an isotope of the element xenon with mass 125 u) is 6.0 fm in diameter. It has 54 protons and charge q= + 54e.
1)What is the electric force in N on a proton 1.90 fm from the surface of the nucleus?
2)What is the proton's acceleration?
The solution uses Coulomb's law to calculate the electric force and proton acceleration.