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//Example number 6.8, Page number 119
clc;clear;
close;
//Variable declaration
rho=10**4; //density of silver(kg/m**3)
N=6.02*10**26; //avagadro number
e=1.6*10**-19; //charge(c)
m=9.1*10**-31; //mass(kg)
MA=107.9; //atomic weight(kg)
sigma=7*10**7; //conductivity(per ohm m)
//Calculation
n=rho*N/MA; //density of electrons(per m**3)
mew=sigma/(n*e*10**2); //mobility of electrons(m**2/Vs)
tow=sigma*m*10**15/(n*e**2); //collision time(n sec)
//Result
printf("density of electrons is %.1e m^3",n)
printf("\n mobility of electrons is %.4e m^2/Vs",mew)
printf("\n collision time is %.1f sec",tow)
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