2_CoulombsLaw0910

2_CoulombsLaw0910 - • k = Coulomb’s constant • q 1 =...

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1 Book - Ch. 32.2 – 32.3 d • Coulomb’s Law describes the force that is present between two charged objects. • The direction of that force depends on the charges (same or opposite). Table of elementary particle masses and charges: • Electrons and protons have the same amount of charge, 1.60 x 10 -19 C, except for the + or -. What’s a Coulomb? • Unit of electric charge. (C) • Charge on 1 electron or 1 proton (equal and opposite) is noted as e : e = 1.602x10 -19 Coulombs • How many electrons or protons in 1 C?
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2 Coulomb’s Law Equation: • F = electric force
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Unformatted text preview: • k = Coulomb’s constant • q 1 = charge one • q 2 = charge two • d = distance 2 2 9 2 2 1 10 9 C Nm x k d q q k F = = Example 1 • Object A has a positive charge of 6.0 x 10-6 C. • Object B, carrying a positive charge of 3.0 x 10-6 C, is 0.030 m away. • Calculate the electrical force. Example 2 A given electrical force is equal to 100 N. (a) If the point charge is reduced by a half, what will the new force be? (b) For the given 100 N force, the distance is reduced by a half. What is the new force?...
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This note was uploaded on 11/13/2011 for the course PHYS 1111 taught by Professor Plascak during the Fall '08 term at UGA.

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2_CoulombsLaw0910 - • k = Coulomb’s constant • q 1 =...

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