Conceptual Physics: The High School Physics Program
Conceptual Physics: The High School Physics Program
9th Edition
ISBN: 9780133647495
Author: Paul G. Hewitt
Publisher: Prentice Hall
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Textbook Question
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Chapter 37, Problem 19A

How do the wave speeds compare for high-frequency and low-frequency electromagnetic waves?

Expert Solution & Answer
Check Mark
To determine

To compare: the wave speed of high - frequency and low -frequency electromagnetic waves.

Explanation of Solution

Introduction:

Electromagnetic waves travel at 3×108m/s in vacuum.

Speed of electromagnetic waves does not depend on frequency. It depends on the medium through which it is travelling.

Conclusion:

Speed of high-frequency and low -frequency electromagnetic waves is equal.

Chapter 37 Solutions

Conceptual Physics: The High School Physics Program

Ch. 37 - What does a transformer actually...Ch. 37 - What does a step-up transformer step up—voltage,...Ch. 37 - How does the relative number of turns on the...Ch. 37 - If the number of secondary turns is 10 times the...Ch. 37 - Prob. 15ACh. 37 - Why is it advantageous to transmit electric power...Ch. 37 - What fundamental quantity underlies the concepts...Ch. 37 - Distinguish between Faradays law expressed in...Ch. 37 - How do the wave speeds compare for high-frequency...Ch. 37 - Prob. 20ACh. 37 - The magnets are moved into the wire coils in...Ch. 37 - The transformers are all powered with 100 W, and...Ch. 37 - When Tim pushes the wire down between the poles of...Ch. 37 - A common pickup for an electric guitar consists of...Ch. 37 - Two separate but similar coils of wire are mounted...Ch. 37 - If you place a metal ring in a region in where a...Ch. 37 - A magician places an aluminum ring on a table,...Ch. 37 - How could you light a lightbulb that is near, yet...Ch. 37 - What is the basic difference between an electric...Ch. 37 - With no magnets around, why will current flow in a...Ch. 37 - What is the source of all electromagnetic waves?Ch. 37 - Why is a generator armature more difficult to...Ch. 37 - Your classmate says that, if you crank the shaft...Ch. 37 - Some bicycles have electric generators that are...Ch. 37 - An electric hair drier running at normal speed...Ch. 37 - When a piece of plastic tape coated with iron...Ch. 37 - Why is it important that the core of a transformer...Ch. 37 - Why can a hum often be heard when a transformer is...Ch. 37 - When a strip of magnetic material, variably...Ch. 37 - If a car made of iron and steel moves over a wide...Ch. 37 - Prob. 41ACh. 37 - How could you move a conducting loop of wire...Ch. 37 - Why does a transformer require alternating...Ch. 37 - How does the current in the secondary of a...Ch. 37 - In what sense can a transformer be thought of as...Ch. 37 - Can an efficient transformer step up energy?...Ch. 37 - A friend says that changing electric and magnetic...Ch. 37 - Would electromagnetic waves exist if changing...Ch. 37 - When a bar magnet is dropped through a vertical...Ch. 37 - What is wrong with this scheme? To generate...Ch. 37 - An electromagnet A with a coil of 10 turns...Ch. 37 - An electric doorbell requires 12 volts to operate...Ch. 37 - A model electric train requires 6 V to operate....Ch. 37 - If the output current for the above transformer is...Ch. 37 - A transformer has an input of 9 volts and an...Ch. 37 - A model electric train requires a low voltage to...Ch. 37 - Prob. 57ACh. 37 - Prob. 58ACh. 37 - Neon signs require about 12,000 V for their...
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What Are Electromagnetic Wave Properties? | Physics in Motion; Author: GPB Education;https://www.youtube.com/watch?v=ftyxZBxBexI;License: Standard YouTube License, CC-BY