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