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Conceptual Physical Science (6th Edition)
6th Edition
ISBN: 9780134060491
Author: Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt
Publisher: PEARSON
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Textbook Question
Chapter 8, Problem 83E
When a car is moved into a painting chamber, a mist of paint is sprayed around its body. When the body is given a sudden electric charge and mist is attracted to it–presto–the car is quickly and uniformly painted. What does the phenomenon of polarization have to do with this?
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Students have asked these similar questions
When a car is moved into a painting chamber, a mist of paint is sprayed around its body. When the body is given a sudden electric charge and mist is attracted to it— presto—the car is quickly and uniformly painted. What does the phenomenon of polarization have to do with this?
Which of the following explains how the phenomenon of polarization allows a charged object (e.g. a
comb) to attract an electrically neutral object (e.g. a piece of paper)?
O it separates charges on the neutral object, so that charges that are unlike of those on the charged object are closest to it and like charges are farthest
from it.
it cause charges to spin, which produce magnetic fields of opposite sign, which therefore attract
it creates electric currents that are in the same direction and therefore attractive.
it creates a capacitor that tries to discharge
none of these
concern recent clinical results using electric fields to disrupt rapidly dividing tumor cells. When cells are dividing, some elements of the cell develop a small net charge, and others develop a dipole structure with a positive charge on one end and a negative charge on the other. When a uniform electric field is applied to the body, the field will not be uniform inside the body. The motion of charges and polarization effects, both of which vary strongly from place to place, create a field that is quite variable at the level of the cell. The field is strong in some places and weak in others. The varying field exerts forces and torques on the cell components. This can disrupt cell division, which can have an especially large impact on the rapidly dividing cells in a tumor. To illustrate this idea, we consider a cylindrical element with a dipole structure but no net charge,embedded in a dividing cell. The varying environment of the cell createsa local variation in the strength of the…
Chapter 8 Solutions
Conceptual Physical Science (6th Edition)
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