pistons/pressure

[laurasanchezr]

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Quick question: How is pressure inversely proportional to Volume if equation states
P= ρVg/A

thanks

 

[sdm33]

Pressure and volume is not the same in liquid and gas. Difference in pressure between liquids and
Gases due to (in)compressibility, so the formula you have is good for liquids , however for gases volume is inversely proportional to pressure.

 

[advair250]

Pv=nrt