What does the "C" in the formula FL = C Q² L represent?

In the formula FL = C Q² L, the "C" represents the Coefficient of Resistance. This coefficient is crucial in determining the pressure loss due to friction in hoses or pipes when fluid flows through them. The value of 'C' is influenced by factors such as the material and diameter of the hose, and it quantifies how much resistance is encountered by the fluid.

Understanding this coefficient is essential for firefighting and other operations that involve fluid dynamics, as it allows operators to calculate the necessary pressure needed to maintain flow rates effectively, ensuring adequate performance during emergency situations. The resistance is vital for ensuring that the right amount of pressure is applied to deliver water to where it is needed most, such as during a firefighting response.