Question 56Safety & Environmental - 1st Asst/Chief

The correct answer is C) remain motionless. When a fire hose is left unattended and under pressure with the nozzle shut off, the hose will remain in a motionless state. This is because the pressure within the hose is evenly distributed, and without an open nozzle for the water to escape, the hose will not experience any unbalanced forces that would cause it to lash about violently or become elongated. The other options are incorrect because: A) the hose would not lash about violently without an open nozzle to create unbalanced forces, B) the hose would not become elongated by 125% without significant changes in pressure or tension, and D) the hose would not burst under pressure if the nozzle is shut off, as the pressure would be contained within the hose.