Question

In a U-tube barometer, some air was left above the mercury in the closed tube. The difference in height between the column of mercury in the closed tube and in the open tube is 75.6 cm when the atmospheric pressure is 78.9 cm. Calculate the air pressure in the space above the mercury in the closed tube. Express the pressure in dynes/cm2.​

Answer 1

Answer:

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Explanation:

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