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diff --git a/3020/CH20/EX20.10/ex20_10.sce b/3020/CH20/EX20.10/ex20_10.sce
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+clc;
+clear all;
+rho=8900;//density of Ni
+m=58.71;//atomic weight of Ni
+Na=6.022e26;//avagadra's number
+u0=4*%pi*1e-7;//permiability of vacume
+N=rho*Na/m;//no of atoms per unit volume
+disp('atoms/m^3',N,'no of atoms per unit volume is:')
+um=9.27e-24;
+x=0.6*um;//bohr megneton per atom
+y=N*x;//magnetic moment per 1 gm atom
+disp('A/m^2',y,'magnetic moment per 1 gm atom is:')
+Bs=u0*y;//saturation magnetisation
+disp('Wb/m^2',Bs,'saturation magnetisation is:')