Learning Materials
Features
Discover
Chapter 33: Q4Q (page 1000)
Figure 33-28 shows the electric and magnetic fields of an electromagnetic wave at a certain instant. Is the wave traveling into the page or out of the page?
The direction of the wave is into the page.
Over 30 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
In Fig. 33-78, where , ,and,light refracts from material 1 into material 2. If it is incident at point A at the critical angle for the interface between materials 2 and 3, what are (a) the angle of refraction at pointBand (b) the initialangle?If, instead, light is incident atBat the critical angle for the interface between materials 2 and 3, what are (c) the angle of refraction at pointAand (d) the initial angle? If, instead of all that, light is incident at point Aat Brewster’s angle for the interface between materials 2 and 3, what are (e) the angle of refraction at point B and (f) the initialangle?
What is the wavelength of the electromagnetic wave emitted by the oscillator–antenna system of the following Fig. 33-3 ifand?
What inductance must be connected to acapacitor in an oscillator capable of generating(i.e., visible) electromagnetic waves? Comment on your answer.
Question: In Fig. 33-58, light from rayArefracts from material into a thin layer of material , crosses that layer, and is then incident at the critical angle on the interface between materials 2 and 3 .(a) What is the value of incident angle ? (b) If is decreased, does part of the light refract into material 3 ? Light from ray B refracts from material 1into the thin layer, crosses that layer, and is then incident at the critical angle on the interface between materials 2 and 3. (c) What is the value of incident angle ? (d) If is decreased, does part of the light refract into material 3 ?
Figure 33-74 shows a cylindrical resistor oflength,radius , and resistivity carrying current.(a) Show that the Poyntingvector at the surface of the resistor is everywhere directed normal to the surface, as shown. (b) Show that the rate at which energy flows into the resistor through its cylindrical surface, calculated by integrating thePoynting vector over this surface, is equal to the rate at which thermal energy is produced: localid="1664201793898" wherelocalid="1664201800300" is an element of the area on the cylindrical surface and localid="1664201803478" is the resistance.
What do you think about this solution?
We value your feedback to improve our textbook solutions.
Explanations 
Textbooks 
Exams 
GCSE 
IGCSE 
AS 
A Level 
International A Level 
University Admissions Tests 
Flashcards 
Vaia AI 
Notes 
Study Plans 
Study Sets 
Find a job 
Find a degree 
Student Deals 
Magazine 
Mobile App