The figure below shows a closed tank that contains gasoline floating on water. Calculate the air pressure above the gasoline. The container is vented to the local atmosphere. What is the absolute pressure at the surface of the mercury and at the bottom of the container (kPa)? Assume the conditions of the standard atmosphere prevail for pressure. Use sg = 13.54 for the mercury

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British Gravitational Bg System Of Units

Measuring is the comparison of a particular physical quantity with its reference value. A unit is a fixed physical quantity. The length is a physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.