If the flow is critical in an open channel, which of the following relations is correct? (Where Q = discharge, g = acceleration due to gravity, A = cross-sectional area of flow, and T = top width of the channel)

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?