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Engineering and Tech / Fundamentals of Fluid Mechanics 7 / Chapter 2 / Problem 2.33

Fundamentals of Fluid Mechanics | 7th Edition | ISBN: 9781118116135 | Authors: Bruce Munson

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For an atmospheric pressure of 101 kPa (abs) determine the

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QUESTION:

For an atmospheric pressure of 101 kPa (abs) determine the heights of the fluid columns in barometers containing one of the following liquids: (a) mercury, (b) water, and (c) ethyl alcohol. Calculate the heights including the effect of vapor pressure and compare the results with those obtained neglecting vapor pressure. Do these results support the widespread use of mercury for barometers? Why?

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QUESTION:

For an atmospheric pressure of 101 kPa (abs) determine the heights of the fluid columns in barometers containing one of the following liquids: (a) mercury, (b) water, and (c) ethyl alcohol. Calculate the heights including the effect of vapor pressure and compare the results with those obtained neglecting vapor pressure. Do these results support the widespread use of mercury for barometers? Why?

ANSWER:

Step 1 of 3

The given atmospheric pressure is 101 kPa.

(a)

The vapor pressure of the mercury is 0.0016Patm.

The height of fluid column including the effect of vapor pressure is,

The height of the fluid column neglecting the effect of vapor pressure is,

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