Chapter 17, Problem 25P

* EST An electron is 0.10 cm from an object with electric charge of $+3.0\times {10}^{-6}\text{C}$.(a) Determine the magnitude of the electrical force $F_{o\text{ on e}}$ that the object exerts on the electron. (b) The electron is pulled so that it moves to a distance of 0.11 cm from the charged object. Determine the magnitude of the electrical force $F_{o\text{ on e}}$ fled by the charged object on the electron when at this distance (c) Estimate the work done by the average force pulling the electron

$\left(\frac{F_{\text{O }\text{on }e}+F{\text{'}}_{\text{O }\text{on}e}}{2}\right)\Delta x$

(d) Compare this number to the change in electric potential energy of the electron-charged-object system as the electron moves away from the object. Why should the numbers be approximately equal