1. The problem statement, all variables and given/known data Hey, im doing some work with torricellis equation and I have some questions. Im using the equation: dH/dt*A(h)=-B*squareroot(2*g*h) My question is, in my textbook it says the general formula is: dH/dt*A(h)=-0.6*B*squareroot(2*g*h) I want to know where the constant 0.6 comes from. Is it a constant which takes height for viscosity or turbulence and if so how do I find this constant? Thanks.