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//Variable declaration
N=6.023*10**26 //Avagadro number
D=8960 //density
F_e=1 //no.of free electrons per atom
W=63.54 //Atomic weight
i=10
e=1.602*10**-19
m=9.1*10**-31
rho=2*10**-8
Cbar=1.6*10**6 //mean thermal velocity(m/s)
//Calculations
n=(N*D*F_e)/W
A=%pi*0.08**2*10**-4
Vd=i/(A*n*e) //Drift speed
Tc=m/(n*(e**2)*rho)
lamda=Tc*Cbar
//Result
printf('n =%0.3f *10**28 /m**3 \n ',(n/10**28))
printf('The drift speed Vd =%0.3f *10**-5 m/s \n ',(Vd*10**5))
printf('The mean free collision time Tc =%0.3f *10**-14 seconds \n ',(Tc*10**14))
printf('Mean free path =%0.3f *10**-8 m""(answer varies due to ing off errors) \n ',(lamda*10**8))
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