Alake contains water at a maximum depth of 237.3 meters. this water has a density of 989 kg/m3 and the acceleration due to gravity at this location is 9.806 m/s2. the air above the water has a barometric pressure of 29.83 in of hg where the altitude correct for pressure is -1.87 in of hg to get absolute pressure. what is the absolute pressure at the bottom of the lake?

690.21 mm of Hg

Explanation:

Given data

depth of lake=237.3m

density of lake water=

acceleration due to gravity=

air  above water has a barometric  pressure of 29.83in of Hg=711.2 mm of Hg

Altitude correct for pressure=1.87in of Hg=47.5 mm of Hg

Absolute pressure above water =711.2-47.5mm of Hg=663.7 mm of Hg

Absolute pressure at bottom of Lake=Pressure at surface level +

Absolute pressure at bottom of Lake=663.7+

Absolute pressure at bottom of Lake=690.21 mm of Hg

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31

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