Leadscrew efficiency
4th Equation of Motion for Rotation - Angular Velocity : time independent
Perimeter of a Triangle
Area of an Isosceles triangle ( by its sides)
Black hole surface gravity
Angular resolution (by a single telescope)
Block and tackle - effort required to raise a given weight
Torsion constant (Ellipse -cross-sectional shape)
Speed of Sound in Plasma
Force aplied at a contact area between a sphere and an elastic half-space