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//Variable declaration
ne=1; //number of electrons
rho=1.721*10**-8; //resistivity(ohm m)
w=63.54; //atomic weight
e=1.6*10**-19; //charge(c)
D=8.95*10**3; //density(kg/m**3)
Na=6.025*10**26; //avagadro number(per k mol)
//Calculation
n=ne*Na*D/w;
mew=1/(n*e*rho); //mobility of electrons(m**2/Vs)
//Result
printf('mobility of electrons is %0.3f m**2/Vs \n',(mew))
printf('answer in the book is wrong\n')
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