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You can fill a bucket from a downstairs tap quicker than from an upstairs tap?
Wiki User
∙ 11y ago
You can do this because it takes more pressure from the pipe to flow water to the upstairs tap than the amount of pressure it takes to flow water to the downstairs tap. This is clear in Bernoulli's Equation:
The fancy-looking p (pronounced rho) in the first two terms represents the
density of the liquid, v represents the velocity in which the fluid is traveling, g is the acceleration due to gravity (appx. 9.8m/s^2), and z is the difference in height traveled by the fluid, the final P represents the atmospheric pressure (101.3 kPa). As you can see, as the value of variable z decreases, it allows for the only other variable, v, to increase. This explains why, at a higher elevation and a constant force applied to the fluid, water will flow faster at a lower height than a higher point.
EDIT: It won't let me add an image for some odd reason, search Bernoulli's Principle and look for the phrase, "By multiplying with the fluid density", and reference the equation underneath for a more complete understanding of what I just said.
Wiki User
∙ 11y ago
Wiki User
∙ 9y agoNormally water enters a house at the ground floor area. Thereafter its distributed across the house. Water is under pressure in the mains system feeding the building and this pressure pushes the water to the outlets. When there is sufficient pressure it will push the water to the floor above ground level quite comfortably.
When filling a bucket at ground level the pressure is greater than on floors above. The higher you go the less pressure is available . Therefore the slower the water comes from the outlet.
Wiki User
∙ 11y agoCause you need more less pressure to pump up the water to uptairs so therefore it is slower than taking water from downstairs.
Wiki User
∙ 15y agoThe pressure that would otherwise have been used to get the water upstairs helps increase the flowrate from a downstairs tap.
Wiki User
∙ 11y agoThe higher up you go in a building,
the lower the water pressure at the tap.
Wiki User
∙ 6y agoPressure drops as altitude increases.
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