Evac=(sigma/AEo)(Z component vector)
This is the problem I'm working on. So far I know:
1. I am assuming the free charge density is +sigma for the top plate and -sigma for the bottom plate.
2. The electric field from the plates goes from top to bottom plate, in the negative z direction.
3. The electric field of the capacitors oppose the electric fields of the plates (in +z direction) and are E=1/(Er)*Evac
4. The electric field of the vacuum is Evac=(sigma/AEo)(Z component vector)
I'm unsure about how geometry plays into these questions. From the formula for the electric field in each dielectric, it looks like only the dielectric constant contributes to the electric field for each slab. (since A is always the area of the capacitor plates. Or does that change based on the area that the slab covers?)
I have more questions but I'll just start off with that.