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You are riding in a train, gazing into the distance

College Physics | 1st Edition | ISBN: 9781938168000 | Authors: Paul Peter Urone, Roger Hinrichs ISBN: 9781938168000 42

Solution for problem 17CQ Chapter 20

College Physics | 1st Edition

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College Physics | 1st Edition | ISBN: 9781938168000 | Authors: Paul Peter Urone, Roger Hinrichs

College Physics | 1st Edition

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Problem 17CQ

Problem 17CQ

You are riding in a train, gazing into the distance through its window. As close objects streak by, you notice that the nearby fluorescent lights make dashed streaks. Explain.

Step-by-Step Solution:
Step 1 of 3

Solution 17CQ

When riding in a train and looking outside through the window pane, the fluorescent light makes dashed streaks.

Stroboscopic effects is a kind of illusion, when the light falls on a moving objects (in this case our eyes), they appears to be running slowly in either both directions. The alternating current fluctuates between a negative to positive magnitude crossing zero many times per second.

For example as in India the alternating current is supplied with a frequency of 50 Hz , this means the lamp dims and brightens repeatedly 50 times in a second.

Hence, it is due to the stroboscopic effect, the fluorescent light makes a dashed streak.

Step 2 of 3

Chapter 20, Problem 17CQ is Solved
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Textbook: College Physics
Edition: 1
Author: Paul Peter Urone, Roger Hinrichs
ISBN: 9781938168000

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You are riding in a train, gazing into the distance