Borda–Carnot equation (Sudden contraction of a pipe)
Mechanical advantage - actual
Borda–Carnot equation
One of the legs of a right triangle related to the inradius and the other leg.
Paschen's Law
Bivariate (two variable) quadratic function(y minimum/maximum)
Bivariate (two variable) quadratic function(x minimum/maximum)
Binoculars range (distance to an object)
Bernoulli’s Equation (conservation of energy)
Monoclinic crystal system (Unit cell's volume)