6.4. What pressure in atmospheres would be needed to force water at 25°Cthrough a 1-cm-thick sintered-glass filter with a uniform pore size of100 nm? What would be the force for mercury under the same condi-tions?

First of all we will calculate the height of water inside the tube due to capillary action as,…

Answered: pressure in atmospheres would be needed…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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A Midwest Cooperative needs to store 15 750 gallons of a liquid chemical. They are considering two possible containers, a hollow cylinder or a hollow sphere. The wall of the sphere will need to be 6 in. thick and the wall, top and bottom of the cylinder are each 6 in. thick. Due to space limitations the height of the cylinder must be 26.0 ft. (a)What will be the outside diameter of the cylinder required to hold the liquid chemical? (b)What will be the outside diameter of the sphere? (c)Assume the containers are made of aluminum, which container uses the most material?
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Calculate the capillary effect in mm in a glass tube of 4mm diameter, when immersed in (1)water, (2)mercury. The temperature of the liquid is 25°C and the values of surface tensions of water and mercury at 25°C in contact with air is 0.0725 and 0.6N/m respectively. The angle of contact for water is 0° and 130° for mercury . Take the density of water 1000 kg/m3, specific gravity of mercury is 13.6. The capillary effect of water in mm is equal to= The capillary effect of mercury in mm is equal to=
The digital thermometers that we use in the lab today are similar to the ones that we use in our homes, but several years ago scientists used to use glass thermometers that contained a thin column of mercury to measure temperature. Why do you think we no longer use the mercury thermometers in the lab?

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pressure in atmospheres would be needed to force water at 25°C through a 1-cm-thick sintered-glass filter with a uniform pore size of 100 nm? What would be the force for mercury under the same condi- tions? What