PHYS 1004 Chapter Notes - Chapter 21: Net Force, Pair Production, Unit Vector

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Electric charge property of the fundamental properties that make up objects. Two types of charges positive and negative. Equal number of positively and negatively charged particles neutral. Excess of negatively charged particles (electrons) negatively charged. Excess of positively charged particles (protons) positively charged. Classification of material with the ability of charge to move through them. Conductors charge can move freely through these materials ex. Semi conductors material that are intermediate between conductors and insulators ex. Insulators (non-conductors) charge can not move freely through these materials ex. Super conductors perfect conductors, charge can move through them with out any hindrance. Ground infinite charge-reservoir that can accept or give away charge to make charged object neutral. Coulomb"s law used to describe the electrostatic forces acting on particles. Or: q1 and q2 are the charges on two particles r is the distance between the centers of both particles, k is the electrostatic constant/coulomb constant, is the unit vector, is the electrostatic force.

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