Physics Quicksheets - Fluids and Solids

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Author:
awc1990
ID:
227860
Filename:
Physics Quicksheets - Fluids and Solids
Updated:
2013-07-23 12:08:06
Tags:
Physics Quicksheets Fluids Solids
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Description:
Kaplan Quicksheets - Chapter 5
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  1. Density (ρ)


    [SI units: kg/m3]
  2. Specific Gravity
    Specific Gravity =   =      [No Units]

    ρwater = 103 kg/m3
  3. Weight (W)
    W = ρgV
  4. Pressure:
    a scalar quantity defined as force per unit area: 

           [SI Units: Pascal = N/m2]

  5. Pressure of a Static Fluid:
    For static fluids of uniform density in a sealed vessel, pressure:

    P = ρgh
  6. Absolute Pressure
    in a fluid due to gravity somewhere below the surface is given by the equation

    P = P0 + ρgh

    Absolute pressure is zero-referenced against a perfect vacuum, so it is equal to gauge pressure plus atmospheric pressure.
  7. Gauge Pressure
    Gauge pressure is zero-referenced against ambient air pressure, so it is equal to absolute pressure minus atmospheric pressure. Negative signs are usually omitted.

    Pg = Pabs - Penvironment
  8. Continuity Equation
    V1A1 = V2A2
  9. Bernoulli's Equation:
    P + ρv2 + ρgh = constant
  10. Archimedes's Principle
    difference between object's weight in air and weight in fluid:

    Fbuoyant = ρfluidgVsubmerged


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