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//Variable declaration
EF=5.5*1.602*10**-19; //fermi energy of silver(J)
tow=3.97*10**-14; //relaxation time(s)
m=9.11*10**-31; //mass(kg)
//Calculation
vf=sqrt(2*EF/m); //fermi velocity(m/s)
lamda=vf*tow; //mean free path(m)
//Result
printf('fermi velocity is %0.3f *10**6 m/s \n',(vf/10**6))
printf('mean free path is %0.3f *10**-8 m \n',(lamda*10**8))
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