Pressure in Fluids
A dam is 200 m long and 20 m deep. Find the total force exerted by the water on the dam.
A vertical tube 0.80 m long is one-quarter full of mercury of density 13 600 kg m-3 and three-quarters full of paraffin of density 800 kg m-3. What pressure do the liquids at the bottom of the tube exert?
The height of the mercury barometer is 750 mm. If the density of mercury is 13 600 kg m-3, what is the atmospheric pressure? (atmospheric pressure holds up the mercury)
A vertical U-tube contains a column of water balanced by a column of paraffin. (draw a diagram) The top of the water column is 0.40 m above the common level and the top of the paraffin column is 0.50 m above the common level. (ie their weight is equal) What is the density of paraffin?
If the mercury barometer reads 760 mmHg, find the atmospheric pressure in millibars. The density of mercury is 13 600 kg m-3 and 1 mbar = 10 N m -2.
A mercury barometer reads 758 mm at sea level and 708 mm at the top of a mountain. If the density of mercury is 13 600 kg m-3 and the average density of the air is 1.25 kg m-3, what is the height of the mountain?
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