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No. If it were true there would be no such thing as a bottle neck surely.


But I have the feeling that this is getting into the territory of Bernoulli's principle which states: Within a horizontal flow of fluid, points of higher fluid speed will have less pressure than points of slower fluid speed. (I had to look this up. ? School days were a very long time ago.)


The next question is about what the difference of pressure (force) acting on the water flow in the hose is compared to the pressure of the same water leaving the jets of the brush.


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