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//Example number 11.1, Page number 246
clc;clear;
close;
//Variable declaration
e=1.6*10**-19; //charge(coulomb)
v=3*10**3; //velocity of matter wave(m/s)
h=6.6*10**-34; //plank's constant(Js)
lamda=600*10**-9; //wavelength(m)
//Calculation
Ej=h*v/lamda; //matter wave energy(J)
E=Ej/e; //matter wave energy(eV)
//Result
printf("matter wave energy is %.2e eV",E)
//answer given in the book is wrong
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