(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

use E_m=1/n (E)p(E)dE integral from 0 to Infinity

to derive E_m=3/5(E_f)

2. Relevant equations

n= p(E)dE integral from 0 to infinty

also n=Q*sqrt(E)dE integarl from 0 to (E_f)

p(E)=Q*sqrt(E)/(e^(E-E_f)+1)

3. The attempt at a solution

i tried doing integration by parts on it and moving stuff around but i cant seem to get it , is there a trick in using that the integral from o to infinty of p(E)dE = 0

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# Homework Help: Fermi-sphere derivation

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