Review I Constants I Periodic Table

The nucleus of ${?}^{125}xe$ atom $($an isotope of the element xenon which has a total of $125$ protons and neutrons$)$ is $6\mathrm{.}0fm$ in diameter. $(1fm=1$ femtometer $=1{10}^{-15}m)$ Xenon has $54$ protons; therfore, the nucleus has total charge $q=+54e.$ Another proton $($which is not part of the Xenon nucleus$)$ is placed a distance $d=1\mathrm{.}0fm$ from the surface of the nucleus. $($Figure $1)$

Part A

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.

Express your answer using three significant figures.

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Part B

What is the proton's acceleration at its initial distance from the nucleus?

Express your answer using three significant figures.

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$a_{\text{p}\text{r}\text{o}\text{t}\text{o}\text{n}}=$

$\frac{m}{s^2}$ SOLVE A AND B FOR ME