clear;
clc;
printf("\nEx2.30\n");
//page no.-72
//given
del_x=1.1*10^-8;...............//uncertainty in position of electron in m
h=1.05*10^-34;................//planck's constant in joule-sec
m=9*10^-31;....................//mass of e in kg
//By Heisenberg's uncertainty principle,

del_v=h/(m*del_x)................//uncertainty in velocity in m/s

printf("\nuncertainty in velocity is 1.06*10^4 m/s\n");