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clc;
clear;
h=6.63*10^-34 //Plancks constant in J-s
K_b=1.38*10^-23 //Boltzmanns constant in m^2 kg s^-2 K^-1
T=300 //Temperature in K
m=1.00878*1.66*10^-27 //mass of neutron in kg
//calculation
lambda=(h/sqrt(3*m*K_b*T))
mprintf("The de-Broglie wavelength is = %1.2e m or 0.145 nm",lambda)
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