Thrust to Power
Capillary Action - height of the meniscus
Parallel axis theorem ( at mass moment of inertia)
Vis-Viva Equation
Torsion
Perimeter of a Circle (by the diameter)
Freefall in Uniform Gravitational Field with Air Resistance (altitude)
Cubic equation
Angle required to hit polar coordinate (x,y) - (projectile following a ballistic trajectory)
Critical Speed of a Rotating Shaft - Dunkerley's method