Which law describes the steady laminar flow of Newtonian fluids?

The correct answer is based on Poiseuille's Law, which specifically describes the flow of incompressible, Newtonian fluids through a cylindrical tube. This law establishes a relationship between the flow rate and various factors such as the pressure difference, the radius of the tube, the viscosity of the fluid, and the length of the tube.

In steady laminar flow, which is characterized by smooth and orderly fluid motion, Poiseuille's Law provides a mathematical formula that predicts how the flow rate (Q) is proportional to the fourth power of the radius (r) of the tube, inversely proportional to the viscosity (η) of the fluid and the length (L) of the tube, as well as proportional to the pressure difference (ΔP) across the length of the tube. This makes it highly applicable in contexts involving blood flow and other similar fluid dynamics phenomena.

Bernoulli's Principle, while also related to fluid dynamics, pertains to energy conservation in flowing fluids rather than the laminar flow described by Poiseuille's Law. Ohm's Law relates to electrical circuits instead of fluid flow. Hooke's Law addresses the relationship between force and deformation in elastic materials and does not pertain to fluid dynamics. Therefore, Poise