Although these restrictions sound severe, the Bernoulli equation is very useful ... Therefore, to find the velocity V_e, we need to know the density of air, and the pressure difference (p_0 - p_e).

To see how mass conservation places restrictions on the velocity field, consider the steady flow of ... with one inlet and one outlet. This equation is called the continuity equation for steady ...

For example in mechanics, the rate of change of displacement (with respect to time) is the velocity ... function \(f\textquotesingle(x)\). For an equation beginning \(y =\), the rate of change ...