Chapter 18, Problem 8P

* $\text{A +4}\text{.0 }\times {\text{ 10}}^{\text{-9}}\text{-C}$ charged object is 6.0 cm along a horizontal line toward the right of a $\text{- 3}\text{.0 }\times {\text{ 10}}^{\text{-9}}\text{-C}$ charged object Determine the $\stackrel{\to }{E}$ field at a point 4.0 cm to the left of the negative charge.