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. 

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. 

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 

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: 

Thin Double Convex Lens Optical Equations 
Derivation formulas for lens essentially traces an arbitrary ray geometrically and mathematically from an object point through the two surfaces of a thin lens to the corresponding image point. 

Refraction for Water at Various Temperatures 
Table of index of refraction of liquid water at atmospheric pressure, relative to a vacuum, at several temperatures and wavelengths. It is generated from the formulation in Reference 1, which covers a wide range of temperature, pressure, and wavelength. 

