Solve Laplace equation with boundary conditions

[tan90]

Homework Statement

Calculate potential function and the electric field for the region between two concentric cylinders, where V ( inner cylinder) = 0 at r = 0.015 m and V(outer cylinder) = 100 for r = 0.025

Homework Equations

\Delta (square ) V = 0

The Attempt at a Solution

so, V depends only on s, and we will just end up having two unknowns and we will need two boundary conditions that we already have.
am i right?

 

[gabbagabbahey]

Yes, you have two unknowns and two boundary conditions...what do you get for V?

 

[tan90]

i haven't actually solved it yet, but i am pretty sure that i can figure it out. thanks.