Determine whether germanium is a conductor at a certain frequency

[DODGEVIPER13]

Homework Statement

Determine, whether germanium (sigma=2.3) is a conductor at the frequency of 2.4 GHz.
sigma=?(omega)(epsilon)

Homework Equations

The Attempt at a Solution

Well I know omega=2∏f and I have f. Thus I could find omega. Given sigma I could find epsilon but what excatly does that tell me about it being a conductor? hen this is done I get epsilon to be 1.526e-10

 

[DODGEVIPER13]

I could find for a time constant epsilon/sigma and if it is short I will know it is a good conductor is that ok?

 

[DODGEVIPER13]

I got the relative epsilon to be 17.24

 

[DODGEVIPER13]

ω=2∏f=2∏(2.4x10^9)=1.507x10^10
σ=2.3
σ=ωε
ε=1.526x10^-10
ε0εr=1.526x10^-10
εr=(1.526x10^-10)/(8.85x10^-12)=17.24
my final answer is 17.24 am I good?