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physics
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 Average Composition of Dry Air Average Composition of Dry Air between Sea Level and 90-km (295,000-ft) Altitude
 Volume of Water as Function of Pressure and Temperature The compressibility of water is a function of pressure and temperature.
 Saturation Pressure and Temperature for Water Absolute pressure is a pressure that is relative to the zero pressure in empty air-free space.
 2nd Equation of Motion Final Position Calculator This equation applies to a particle moving linearly, in three dimensions in a straight line, with constant acceleration. Since the vectors are collinear (parallel, and lie on the same line) – only the magnitudes of the vectors are necessary and because the motion is along a straight line, the problem effectively reduces from three dimensions to one.
 Specific Weight Formula and Review Specific weight (unit weight), ", is the weight of fluid per unit volume.
 Speed of Sound in Liquid or Fluid Formula The speed of sound (acoustic velocity or sonic velocity), in a fluid is a function of its bulk modulus (or, equivalently, of its compressibility). Equation 1 gives the speed of sound through a liquid.
 Speed of Sound in Various Liquids and Solids The two main factors that effect the speed of sound in a medium is the stiffness and density.
 Exploring Physics with Animations Motion, Kinematics, Newton's Laws, Forces, Friction, Momentum Conservation, Energy Conservation, Thermodynamics, Gravity Orbits, Electric Charge, Electrostatics , Electric Potential, Magnetism, Special Relativity, General Relativity
 Relative Humidity and Weight per Cubic Foot Volume of Air The density and moisture weight can be estimated with the following table - determine the temperature then the known relative humidity to determine the density of water moisture and weight per cubic ft
 Humidity Ratio of Air Humidity ratio W is the ratio of the mass of water vapor to the mass of dry air, Specific humidity γ is the ratio of the mass of water vapor to the total mass of the moist air sample:
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