Density, and PressureA series of free High School Physics Video Lessons from Brightstorm online Physics series..
Density Density is the compactness of mass. Density is expressed mathematically as mass over volume and in physics is expressed using the units kg/m^3.
Elastic Modulus Elastic modulus is a quantitative measure of how much something wants to return to its original shape and size. Generally it can be thought of as stress over strain. It can be calculated as applied pressure / fractional change in size. Young's Modulus is an elastic rod stretched one dimensionally, only expanding in length, which behaves like a spring and can be calculated using Hook's Law.
Bulk Modulus Bulk modulus is a modulus associated with a volume strain, when a volume is compressed. The formula for bulk modulus is bulk modulus = - (pressure applied / fractional change in volume). Bulk modulus is related to elastic modulus.
Liquid Pressure Liquid Pressure is the increase in pressure at increasing depths in a liquid. This pressure increases because the liquid at lower depths has to support all of the water above it. We calculate liquid pressure with the equation liquid pressure = mass x acceleration due to g density x depth in fluid.
Custom Search
We welcome your feedback, comments and questions about this site - please submit your feedback via our Feedback page. © Copyright 2005, 2009, 2010 - onlinemathlearning.com Embedded content, if any, are copyrights of their respective owners.
|
Custom Search