PHYSICS 135 Study Guide - Final Guide: Neutral Buoyancy, Partial Pressure, Litre
Document Summary
Pascal"s principle: pressure applied to a fluid is transmitted throughout change p in one place and you change the pressure everywhere can be used to provide another force magnifier (like a lever) hydraulic systems. The second term ( gd) is called the gauge pressure since standard pressure gauges measure relative to atmospheric pressure. Note that this pressure increase happens due to gravity! The change in pressure with depth is completelyindependentof the shape of the vessel! P=psurface(e)^( h/l) or p=po(e)^( h/l), wherel atmospheric scale height. Pressure of an individual gas in a mixture known as the partial pressure of the gas. For a mix of different non-interacting gases, the pressure of the individual gases add up. Dalton"s law of partial pressures: the total pressure of a mixture of gases is equal to the sum of the partial pressures of the individual gases in the mixture. Neutrally buoyant:p(object) = p(fluid)- an object that has neutral buoyancy will neither sink nor rise.
