"Pete C." wrote in message
ster.com...

Ed Pawlowski wrote:

"Pete C." wrote in message

Pressure is in the hoses and lines up to the nozzle, there is no
pressure after the nozzle, only velocity.

So when the water hits the surface, there is no pressure against it?
You
can hold your hand against it and feel nothing?
Velocity is the rate of change of position, pressure is what you feel.

There is force from the mass of the water impacting the surface at a
high velocity, but this is not the same as the fluid pressure inside the
hose.

True, but that force, or pressure is what counts, not the pressure inside
the hose. As you move the nozzle closer and farther from the target, the
force is going to change. Even though the figure is given in psi, the hole
in the nozzle is very small too, not an inch. Just as light falls off as
you move to increase the distance between the light source and target.