Physics 1021 Study Guide - Quiz Guide: Electric Dipole Moment, Electric Potential Energy, Mechanical Equilibrium

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Rm quiz 14 and 15 (mc-12-wn-001) an object is attached to a horizontal spring. It is initially displaced by a given distance from the equilibrium position (index 1). It is initially displaced by distance x from the equilibrium position and then released from rest. The equilibrium position of the object is at position x = xeq. The elastic force due to the spring is written as: felast = - k(x - xeq) The piston is in mechanical equilibrium at position xeq where the gas pressure pgas is equal to the external atmospheric pressure patm. An external force allows us to move the piston to a new position at xeq - x. The origin of the x-axis is chosen at the left end of the gas cylinder. The electrostatic attraction between the ions is the red curve at negative energies, the repulsive energy is the red curve at positive energies.

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