- 3

- 0

**1. Homework Statement**

q1 (-6.5E-7 C) @ 6 cm to the right of origin (X,Y coordinate is 6,0)

q2 (6.5E-7 C) @ 21 cm to the left of origin (X,Y coordinate is -21,0)

At the half-way point of these two charges, what is the E field value...?

**2. Homework Equations**

sum of electric fields

electric field at point is equal to constant times the charge, all divided by radius squared

constant is 8.99E9 Nmm/(CC)

**3. The Attempt at a Solution**

I found the two E's from the point to the half-way mark...I'm suppose to add the two E's because it's going from negative to positive...right? Well...I got it wrong...