How high can a column of water be pushed up in a vacuum tube by the atmosphere? - old fashioned water pump
Mercury has a density of 13.6 grams per cubic centimeter, while the density of water is 1 gram per cubic centimeter. The atmospheric pressure is high enough to push the mercury to 76 cm through a vacuum tube. How far can a column of water rose in a vacuum tube in the atmosphere? If a vacuum-type old-fashioned farm were used to derive a well, which is the maximum depth of the well that?
Monday, January 11, 2010
Old Fashioned Water Pump How High Can A Column Of Water Be Pushed Up In A Vacuum Tube By The Atmosphere?
1 comment:
The atmospheric pressure is pressure on the liquid column above. Since water weighs 13.6-times less per unit volume of mercury, should be 13.6-times the same as what they weigh, and thus a balanced atmospheric pressure.
The answer is 0.76 m * 13.6 / 1. Slightly more than 10m.
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