// Example 2.4 page no-48
clear
clc

l=5893 //A°
V=2.11 //Volts
e=1.6*10^-19 //C
m=9.1*10^-31 //kg
v=sqrt(2*e*V/m)
printf("Velocity, v=%.2f*10^5 m/sec",v/10^5)