//Example 22.3
B=0.1;//Magnetic field strength (T)
l=4*10^-3;//Inside diameter (m)
v=20*10^-2;//Average blood velocity (m/s)
epsilon=B*l*v;//Hall emf (V)
printf('Hall emf = %0.1f microV',epsilon/10^-6)
//Openstax - College Physics
//Download for free at http://cnx.org/content/col11406/latest