For ten points, identify this material quantity, which can be defined as minus the product of volume and the partial derivative of pressure with respect to volume.
The Birch-Murnaghan equation of state takes volume and this parameter at zero pressure as its arguments, and Cauchy's Number in compressible flows is inversely proportional to this quantity. It is equal to the P-wave modulus minus eight thirds the elasticity modulus, and, in a liquid, the speed of sound is equal to the square root of the ratio of this to the equilibrium density. For a gas at constant enthalpy, this quantity is given by the adiabatic index times the pressure. For ten points, identify this material quantity, which can be defined as minus the product of volume and the partial derivative of pressure with respect to volume.
The Birch-Murnaghan equation of state takes volume and this parameter at zero pressure as its arguments, and Cauchy's Number in compressible flows is inversely proportional to this quantity.
{bulk} modulus [Accept moment of {incompressibility}]