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Answer:
1) The pressure difference is 4.207 kilopascals.
2) 2.5 pounds per square inch equals 5.093 inches of mercury and 5.768 feet of water.
Explanation:
1) We can calculate the gas pressure difference from the U-tube manometer by using the following hydrostatic formula:
(Eq. 1)
Where:
- Relative density, dimensionless.
- Density of water, measured in kilograms per cubic meter.
- Gravitational acceleration, measured in meters per square second.
- Height difference in the U-tube manometer, measured in meters.
- Gas pressure difference, measured in kilopascals.
If we know that ,
,
and
, then the pressure difference is:
The pressure difference is 4.207 kilopascals.
2) From Physics we remember that a pound per square unit equals 2.036 inches of mercury and 2.307 feet of water and we must multiply the given pressure by corresponding conversion unit: ()
2.5 pounds per square inch equals 5.093 inches of mercury and 5.768 feet of water.