to protect against caustic basesare they acceptable in the scientific method?
First, the high pressure water inside the hose while not moving stiffens the hose to a rock like hardness. Once the nozzle is opened, it's the actual water motion in the hose and the nozzle which causes the movement. While it takes at least two strong men to control the hose, a single person could for a short while control that hose. It's extremely tiring, so a single person won't last long. How do I know this? I worked for the Water District in Oakland, CA in my young days. We used fire hoses to clean out the water storage reservoirs annually. We always had three man teams on this all day job.
Run the pasta dough through the rollers to flatten the dough. Should make different shapes.
For every action there is an opposite and equal reaction. The fire hose wants to recoil from the force of the water coming out, just as a firearm recoils or 'kicks' backward when it is fired. Think of the fire hose as a monster gun that fires continuously. While the water is shooting out, the hose is recoiling constantly and takes a great deal of strength to control.
