Mass fraction
Plasma ignition (Townsend breakdown voltage)
Hydraulic conductivity (Constant-head method)
Wind Chill - North American and UK - Celsius scale
Time delay for a signal from Earth to a Satelite in geostationary orbit and back
Electron's speed at any radius
Time of flight for a projectile following a ballistic trajectory
Absolute Magnitude of a Star - with parallax
Declination of the Sun
Moment of inertia of a solid cuboid ( Axis of rotation at the longest diagonal )