What Happens to the Electric Field at X=3cm Between Two Protons?

[Lynden L]

Homework Statement

If one proton is located at x= 2 cm and another at x=4 cm. What is the electric field at x= 3cm?

Homework Equations

I believe it has to do with electromagnetic fields, now what actually happens at x= 3cm?

The Attempt at a Solution

 

[gneill]

Check out Coulomb's Law for electrostatics. Protons are electrically charged particles.