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In the mercury barometer below, the atmospheric pressure is 76 cm Hg.
Find the pressure at A, B and C.
A simple mercury barometer is shown in the figure.
a) Why does the mercury has a height of 760 mm Hg?
b) What would happen to the height of the mercury if region X contains air?
c) Draw the height of the mercury level when the barometer is tilted as shown in P and Q.
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