एक वृत्ताकार पाइप के माध्यम से स्थिर, पूर्णतः विकसित स्तरीय प्रवाह (laminar flow) की विशेषता क्या होती है?

The ratio of the specific weight of a liquid to the specific weight of a standard fluid is known as:

The magnitude of the buoyant force depends on the _____________.

In incompressible fluid dynamics, the continuity equation is ∂u/∂x + ∂v/∂y + ∂w/∂z = 0. What physical law does this equation represent?