Question: the nucleus of a 125xe atom an isotope of the...
The nucleus of a 125Xe atom (an isotope of the element xenon which has a total of 125 protons and neutrons) is 6.0 fm in diameter. (1fm = 1 femtometer = 1×10−15m) Xenon has 54 protons; therefore, the nucleus has total charge q=+54e. Another proton (which is not part of the Xenon nucleus) is placed a distance d = 6.0 fm from the surface of the nucleus.
What is the magnitude of the electric force on that other proton? Hint: Treat the spherical nucleus as if it were a point charge with the entirety of the +54e charge at its center.
What is the proton's acceleration at its initial distance from the nucleus?