Collision Frequency
Flywheel energy storage (Energy density)
Elastic collision (final velocity of the second of the two bodies in elastic collision)
Motor Torque constant - with velocity constant
Geocentric radius of the Earth
Shear coefficient (For solid rectangular cross-section beam)
Compton wavelength
Variance (regarding to the arithmetic mean)
Enthalpy
Abscissa of a point of a circle (trigonometric function)