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clear
//
//
//
//Variable declaration
lamda=1.66*10**-10 //wavelength(m)
m=9.1*10**-31 //mass(kg)
e=1.6*10**-19 //charge(c)
h=6.63*10**-34 //plank constant
//Calculation
E=h**2/(2*m*e*lamda**2) //kinetic energy(eV)
v=h/(m*lamda) //velocity(m/s)
//Result
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