Point Charge and Charged Sphere

[skycap]

Homework Statement

A point charge q1 = -6.1 μC is located at the center of a thick conducting shell of inner radius a = 2.8 cm and outer radius b = 4.8 cm, The conducting shell has a net charge of q2 = 2.6 μC.

Homework Equations

E = (kQ)/r²
F = (kq₁q₂)/r²

The Attempt at a Solution

I honestly do not know how to approach this problem mostly because I've been dealing with point charges. I'm not sure how to find the field of a charged sphere. I'm sure once I get this part down, the rest will follow. Thanks to any and all that can help, I really appreciate it; This is probably the most difficult time I've had with physics (to date).

 

[mfb]

What is the question?

Do you know Gauß' law?