p=100;  
 
t=2*3600;

disp("t=")
disp(t)
// in seconds
disp("sec")

 
e=p*t;

disp("e=")
disp(e)
units='Joules J'
e1=[string(e) units];
disp(e1)
// in joules


// energy is 720000joules