//chapter27
//Example 1
clc
m=9.1*10^-31 //mass of electron in kg
g=9.8 //acceleration due to gravity in m/s
q=1.6*10^-19 //charge of electron in coul
disp("Electric field strength E=F/q where F=mg")
E=m*g/q
disp(E,"electric field strength in nt/coul is")