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27 Nov 2019

Just as you touch a metal door knob, a spark of electricity(electrons) jumps from your hand to the knob. The electricpotential of the knob is 2.0 104 V greater than that of your hand.The work done by the electric force on the electrons is 1.5 10-7 J.How many electrons jump from your hand to the knob?

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Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

Electrons are accelerated from rest through apotentialdifference of Vo and then passthrough aregion between two parallel metal plates. The regionbetweenplates contains a uniform electric field E and uniformmagneticfield B. With only electric field present electronsfollowpath 1. With only magnetic field present electrons followpath3 . With both fields present electrons pass undeflectedalongstraight path 2
a) Describe shape of the portion of path 1 betweenplates
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a)The figure below shows a test charge q betweenthetwo positive charges. Find the force (in newtons) on thetestcharge for q = 2 µC. Give a positive answer iftheforce is to the right and a negative answer if the force is totheleft.



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