Question

if the atmospheric pressure is 76cm of mercury at what depth of water the pressure will becomes 4 atmospheres

Answer 1

The depth of the water is 31.01 m

Explanation:

• The pressure at the surface level is 1 atmosphere.
• Thus we need to determine the depth of water to get pressure of about 3 atmosphere.
•  As we can see that for mercury the height of the liquid column is 76 cm and its density 13.6 g/cm^3.
• Therefore the required depth is calculated as follow.

= 3 × 76 × 13.6

= 3101 cm

= 31.01 m

Hence the depth of the water is 31.01 m

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