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// Chapter 4 Additional Example 5
//==============================================================================
clc;
clear;
// input data
h = 6.625*10^-34 // plancks constant
m = 9.11*10^-31 // mass of electron in Kg
e = 1.6*10^-19 // charge of electron
V = 2000; // potential in volts
// Calculations
lamda = h/(sqrt(2*m*e*V)) // de Broglie wavelength
// Output
mprintf('The de-Broglie wavelength of electron = %3.4f Å',lamda*10^10);
//==============================================================================
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