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College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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
Transcribed Image Text:Learning Goal:
To understand how to calculate forces between
charged particles, particularly the dependence on the
sign of the charges and the distance between them.
Coulomb's law describes the force that two charged
particles exert on each other (by Newton's third law,
those two forces must be equal and opposite). The
force F21 exerted by particle 2 (with charge q2)
on particle 1 (with charge q₁) is proportional to the
charge of each particle and inversely proportional to the
square of the distance r between them:
k 92 91
r21.
F21
72
where k =
1
and 21 is the unit vector pointing
4TTEO
from particle 2 to particle 1. The force vector will be
parallel or antiparallel to the direction of f 21, parallel if
Part B
(Figure 2)Now add a third, negatively charged, particle, whose charge is
-92 (particle 2). Particle 2 fixed on the y-axis at position (0, d2, 0). What is the
new net force on particle 0, from particle 1 and particle 2?
Express your answer (a vector) using any or all of k, go, 91, 92, di, d2, i, j,
and k.
F =
Submit
Part C
17 ΑΣΦ
Review Constants
Request Answer
?
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