PHY 102 Lecture Notes - Lecture 8: Density Of Air, Ideal Gas, Intermolecular Force
Document Summary
Important property of materials (solids, liquids, gases) Measure of compactness of how much mass an object occupies. Lightness or heaviness of materials of the same size. Units of: mass in grams or kg, volume in cm3 or m3, density in kg/m3 or g/cm3. How to measure density: measure mass on a scale, measure volume by putting it in a container of water to see how much the water rises, then mass/volume to find density. Force per unit area that one object exerts on another. Depends on area over which force is distributed. Units on lb/ft2, nm2, or pa (pascals) Depth dependent and not volume or shape dependent. Force per unit area that a liquid exerts on something. Acts perpendicular to surfaces of a container. Liquid spurts at right angles from a hole in the surface curving downward. The greater the depth, the greater the exiting speed. Acts equally in all directions at the same depth.
