On a typical day in any of America's port cities, when you take the tire gauge from your glove compartment and measure a pressure of 25 psi, the absolute pressure of the gas in your car's tire is actually about how many psi? Do not include the unit with your answer.
The relation between the absolute pressure, atmospheric pressure and gauge pressure is Pabs = Patm Pgauge. Gauge pressure can be positive or negative. negative gauge pressure is also called as vacuum pressure. Please have a look into the attached images for solution in details.
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