electrostatic: coulomb’s law · coulomb’s law chapter 21 halliday-resnick 9th ed. thursday, 26...
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Electrostatic:Coulomb’s Law
Chapter 21 Halliday-Resnick 9th Ed.
Thursday, 26 January 2012
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Static electricity
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Same electrical sign :repels
Opposite electrical sign :attracts
Basic principal
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A, B, D : charged plateC : neutral (metal)
? ?
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= ̂Coulomb’s Law
= ̂Newton’s Law
Draw vector forcewith the tail onthe particle
= 1= 8,99 × 10 . /
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= 2(0, 0)
= 2(2, 0)
= −2(2, -3)
=?
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{Electric Fields
Chapter 22 Halliday-Resnick 9th Ed.
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=
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= ̂:Due to a point charge
= = ̂
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= 2(0, 0)
= 2(2, 0)
= −2(2, -3)
=?
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Continuous Charge?