clc; clear all; Rh=3.66e-11;//hall coefficient in m^3/(A*s) sigma=112e7;//conductivity in ohm^-1* m^-1 e=1.6e-19; n=3*%pi/(8*Rh*e);//concentration of electron in m^-3 disp('m^-3',n,'concentration of electron:') ue=sigma/(n*e);//elctron mobility at room temperature disp('m^2/(V*s)',ue,'elctron mobility at room temperature is:');