For a string with constant tension, the speed of a wave varies inversely with the square root of this quantity. Dynamic pressure is calculated by multiplying half of this quantity times speed squared. Pressure plus dynamic pressure plus this quantity times gravitational acceleration times height is constant according to Bernoulli's principle. This quantity is the reciprocal of specific volume. This quantity is constant for incompressible flows of liquids, and under normal conditions, osmium and 
For a string with constant tension, the speed of a wave varies inversely with the square root of this quantity. Dynamic pressure is calculated by multiplying half of this quantity times speed squared. Pressure plus dynamic pressure plus this quantity times gravitational acceleration times height is constant according to Bernoulli's principle. This quantity is the reciprocal of specific volume. This quantity is constant for incompressible flows of liquids, and under normal conditions, osmium and iridium have the highest values for this quantity among stable elements. Name this quantity equal to mass divided by volume.
For a string with constant tension, the speed of a wave varies inversely with the square root of this quantity.
density [accept linear density before "specific volume"; accept (volumetric) mass density after "specific volume"]