Final answer:
The statement that most accurately describes friction loss is that the longer the hose, the higher the friction loss, as more surface area causes greater resistance to water flow.
Step-by-step explanation:
The most accurate statement about friction loss in a hose is D. The longer the hose lay, the higher the friction loss. According to physics, particularly when examining fluid dynamics, friction within a hose causes resistance to the flow of water, thereby decreasing the rate at which the water can travel through the hose. This friction loss is dependent on several factors, including the length of the hose, its diameter, the velocity of water, and the hose's roughness. A key principle here is that the longer the length of the hose, the greater the surface area in contact with water, leading to increased resistance and, hence, more friction loss. This is contrary to the statement that a larger hose diameter increases friction loss; in fact, a larger diameter reduces velocity and consequently reduces friction loss. Additionally, Bernoulli's principle can explain why the pressure is lower at the nozzle when water velocity is higher, which would occur if the nozzle diameter is smaller compared to the hose.