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Unread 29-06-2005, 09:30
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Chris Hibner Chris Hibner is offline
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AKA: Lars Kamen's Roadie
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Re: Pressure physics problems

Sanddrag,

Read the problem carefully and see what they are asking for. Pressure is generally reported two ways: 1) absolute pressure (i.e. add in atmospheric pressure); or 2) relative pressure (i.e. how much pressure above atmospheric).

Some problems require absolute pressure and some require relative. For example, tire pressure is relative pressure. Measuring pressure altitude with an altimeter is absolute pressure.
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