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# At some automobile toll booths, a thin metal wire

ISBN: 9780321909107 29

## Solution for problem 9E Chapter 22

Conceptual Physics | 12th Edition

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Problem 9E

At some automobile toll booths, a thin metal wire protrudes from the road, making contact with cars before they reach the toll collector. What is the purpose of this wire?

Step-by-Step Solution:

Solution 9E Step 1 of 2 : Static electricity is produced when two materials rub against each other, causing a buildup of electrical charges. All materials are made up of negatively- and positively-charged particles. These usually exist in equal amounts, balancing each other out. But when two materials come into contact, one may ‘steal’ negatively-charged electrons from the other. One material ends up with more negative charges than positive ones, meaning that it becomes negatively-charged overall, whilst the other becomes positively-charged. If the charges cannot move away as they are produced, they accumulate in the material as static charge, or electricity.

Step 2 of 2

##### ISBN: 9780321909107

The answer to “At some automobile toll booths, a thin metal wire protrudes from the road, making contact with cars before they reach the toll collector. What is the purpose of this wire?” is broken down into a number of easy to follow steps, and 30 words. This full solution covers the following key subjects: Wire, toll, protrudes, cars, collector. This expansive textbook survival guide covers 45 chapters, and 4650 solutions. Since the solution to 9E from 22 chapter was answered, more than 308 students have viewed the full step-by-step answer. This textbook survival guide was created for the textbook: Conceptual Physics, edition: 12. Conceptual Physics was written by and is associated to the ISBN: 9780321909107. The full step-by-step solution to problem: 9E from chapter: 22 was answered by , our top Physics solution expert on 04/03/17, 08:01AM.

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