Earnings: Amgen, Inc., United States Steel Corporation, Western Digital, More (AMGN, X, WDC, More) January 27, 2015. After the bell on Tuesday, a number of big name, dividend paying companies announced their quarterly earnings. Below, we look at these earnings reports and break down the important points for investors.
As temperature increases, the density of liquids and gases decreases; as temperature decreases, the density increases. Density is the amount of mass per unit of volume.
Disturbing the Hydrostatic Equilibrium: The effect of heating on a small mass of air The relationship between pressure, density and temperature explains what happens when a small mass of air is heated above the temperature of its surroundings. When air is heated (and this may be due to the transfer of sensible heat, radiative energy, or latent heat), the molecules in the air move more rapidly.