clear;
clc;
printf("\nEx3.15\n");
//page no.-132
//given
v=10^-6;........//velocity in m/s
m=10^-9;.......//mass in kg
a=10^-4;.......//width in m
h=6.62*10^-34;....//planck's constant in J-s

E=(m*v^2)/2......//kinetic energy in joule

n=sqrt((8*m*a^2*E)/h^2).........//quantum number

printf("\nquantum number is 3*10^14\n");