Tensile Stress Area
Tractrix
Maugis-Dugdale model of elastic contact ( contact pressure )
Absolute thermal resistance (across the length of the material)
Rotational stiffness
Planet Formation Equation - "Clearing the neighbourhood"
Hall voltage (Hall effect)
Volume of a cone - circular
Hyperbolic law of cosines - 2nd law
Mechanical equilibrium - 3=3 Torque example