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At what depth in a salt water lake is the absolute pressure equal to three times atmospheric pressure ? Density of a sea water = 1.3 xx 10^3 (kg)/m^3. Atmospheric pressure =1.013 xx 10^5 N/m^2.g = 9.8 m/s^2. |
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Answer» SOLUTION :ABSOLUTE PRESSURE = gauge pressure + atmospheric pressure, From the condition of the problem THEREFORE we have gauge pressure =` 2 xx` atmospheric pressure it h be the required depth hpg = `2 xx` atmospheric pressure h =` (2 xx 1.013 xx 10^5)/(1.03 xx 10^3 xx 9.8`) = 20 m. |
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