Final answer:
The hose load question pertains to fire hose arrangements, specifically a flat load. The subsequent scenarios involving measurement of displacement and Reynolds numbers relate to the study of fluid dynamics in physics.
Step-by-step explanation:
The hose load described is likely a flat load, which is a method used by firefighters to prepare a fire hose. While the question does not provide enough detail for a definitive answer, generally, flat loads have the hose laid flat, with its edge up on a hose bed in a U shape. This particular setup is designed for quick deployment while preventing kinks and allowing the hose to be laid out straight from the fire truck.
Regarding the listed science problem involving a garden hose and marble, that scenario seems more related to a physics experiment to measure displacement and elapsed time with the marble's motion through the hose representing linear displacement. Similarly, the Reynolds number calculations fall into the field of fluid dynamics, indicating that the subject is physics and the problems aim to understand the nature of fluid flow in fire hoses.