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John Z.'s Resources

WyzAnt asked me to write a summary of pendulums for their self help section. It includes frequencies, amplitudes, and periods of pendulums, conservation of energy, forces on a pendulum, and motion of objects experiencing Simple Harmonic Motion. It can be found here: http://www.wyzant.com/help/science/physics/pendulums Most systems do not even reach their equilibrium conditions let alone... read more

If you let processes that can go both forwards and backwards sit long enough, they will reach “dynamic equilibrium.” This sounds like an oxymoron because things at equilibrium are constant, right? Well, molecules are always spontaneously bumping into each other and exchanging energy. What we perceive as stuff moving in one direction just means that the rate of stuff in that direction is greater... read more