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Mechanics of Materials Notes StressStress is defined as force per unit area. This is one of the most basic engineering quantities.Shear StressShear stress has the same units as normal stress (force / area) but represents a stress that acts parallel to the surface (cross section). This is different from normal stress which acts perpendicular (normal) … Read more
Laws of Thermodynamics Notes The field of thermodynamics studies the behavior of energy flow in natural systems. From this study, a number of physical laws have been established. The laws of thermodynamics describe some of the fundamental truths of thermodynamics observed in our Universe. Understanding these laws is important to students of Physical Geography because many of the processes studied … Read more
Kinetics Notes Kinetics is the area of chemistry concerned with reaction rates. The rate can be expressed as: rate = change in substance/time for change to occur (usually in M/s)There are several factors that determine the rate of a specific reaction and those are expressed in the “collision theory” that states that for molecules … Read more