PHYSICS LABORATORY EXPERIMENTS >CUSTOM<
8th Edition
ISBN: 9781305751217
Author: Wilson
Publisher: CENGAGE C
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Chapter 32, Problem 4Q
The light coming from a liquid crystal display (LCD), as on a watch or calculator, is polarized. How could you conveniently show this to be the case using a commonly available item? (Hint: What is a common polarizing material or application of polarization?)
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Consider the situation in the figure below; a neutral conducting ball hangs from the ceiling by an insulating string, and a charged insulating rod is going to be placed nearby.
A. First, if the rod was not there, what statement best describes the charge distribution of the ball?
1) Since it is a conductor, all the charges are on the outside of the ball. 2) The ball is neutral, so it has no positive or negative charges anywhere. 3) The positive and negative charges are separated from each other, but we don't know what direction the ball is polarized. 4) The positive and negative charges are evenly distributed everywhere in the ball.
B. Now, when the rod is moved close to the ball, what happens to the charges on the ball?
1) There is a separation of charges in the ball; the side closer to the rod becomes positively charged, and the opposite side becomes negatively charged. 2) Negative charge is drawn from the ground (via the string), so the ball acquires a net negative charge. 3)…
answer question 5-9
AMPS
VOLTS
OHMS
5) 50 A
110 V
6) .08 A
39 V
7) 0.5 A
60
8) 2.5 A
110 V
Chapter 32 Solutions
PHYSICS LABORATORY EXPERIMENTS >CUSTOM<
Ch. 32 - Prob. 1ASACh. 32 - What is the condition for optimum polarization by...Ch. 32 - Prob. 3ASACh. 32 - Prob. 4ASACh. 32 - Prob. 5ASACh. 32 - Describe the principle of optical stress analysis.Ch. 32 - Prob. 7ASACh. 32 - In the polarization of light by reflection with a...Ch. 32 - At a sale of polarizing sunglasses, there is a...Ch. 32 - In the procedure using microscope slides, why was...
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