Essential University Physics
4th Edition
ISBN: 9780134988566
Author: Wolfson, Richard
Publisher: Pearson Education,
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 30, Problem 70PP
The refractive index in the ionosphere is strongly dependent on radio-wave frequency, approaching 1 for high frequencies. Therefore,
- a. long-distance communication via the ionosphere is more likely at higher frequencies.
- b. higher frequencies won't penetrate as far into the ionosphere.
- c. higher frequencies are more appropriate for satellite-based communication.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
An electromagnetic wave is allowed to reflect from a mirror in a measurement of radiation pressure. If Erms is doubled while the wave frequency is cut in half, then the radiation pressure will
a. remain the same.
b. quadruple.
c. double.
d. be cut in half.
Electromagnetic waves in certain wavelength ranges interact with water molecules because the molecules have a large electric dipole moment. The electric field of the waveA. Exerts a net force on the water molecules.B. Exerts a net torque on the water molecules.C. Exerts a net force and a net torque on the water molecules.
If the frequency of an electromagnetic wave is reduced to one third, what happens to the wavelength?
A. It decreases by a factor of 9.
B. It is also reduced to one third.
C. It increases by a factor of 6.
D. It triples.
Chapter 30 Solutions
Essential University Physics
Ch. 30.1 - Prob. 30.1GICh. 30.2 - The figure shows the path of a light ray through...Ch. 30.3 - The glass prism in Fig. 30.11 has n = 1.5 and is...Ch. 30.4 - Prob. 30.4GICh. 30 - Prob. 1FTDCh. 30 - Why does a spoon appear bent when its in a glass...Ch. 30 - Prob. 3FTDCh. 30 - Prob. 4FTDCh. 30 - You send white light through two identical glass...Ch. 30 - In glass, which end of the visible spectrum has...
Ch. 30 - Prob. 7FTDCh. 30 - Why are polarizing sunglasses better than glasses...Ch. 30 - Under what conditions will the polarizing angle be...Ch. 30 - Through what angle should you rotate a mirror so...Ch. 30 - Prob. 12ECh. 30 - To what angular accuracy must two ostensibly...Ch. 30 - Prob. 14ECh. 30 - In which substance in Table 30.1 does the speed of...Ch. 30 - Information in a compact disc is stored in pits"...Ch. 30 - Light is incident on an air-glass interface, and...Ch. 30 - A light ray propagates in a transparent material...Ch. 30 - Light propagating in the glass (n = 1.52) wall of...Ch. 30 - Prob. 20ECh. 30 - Find the refractive index of a material for which...Ch. 30 - Find the critical angle for total internal...Ch. 30 - A drop of water is trapped in a block of ice....Ch. 30 - What is the critical angle for light propagating...Ch. 30 - Total internal reflection occurs at an interface...Ch. 30 - Blue and red laser beams strike an air-glass...Ch. 30 - White light propagating in air is incident at 45...Ch. 30 - Example 30.2: Take the slab in Fig 30.6 to be...Ch. 30 - Example 30.2: Take θ1 = 32.5° in Fig 30.6. (a) If...Ch. 30 - Prob. 30ECh. 30 - Prob. 31ECh. 30 - Prob. 32ECh. 30 - Prob. 33ECh. 30 - Prob. 34ECh. 30 - Prob. 35ECh. 30 - Suppose the 60 angle in Fig. 30.18 is changed to...Ch. 30 - The refractive index of a human cornea is 1.40. If...Ch. 30 - Two plane mirrors make an angle . A light ray...Ch. 30 - An unlabeled bottle of liquid has spilled, and...Ch. 30 - A meter stick lies on the bottom of the...Ch. 30 - Prob. 41PCh. 30 - At the aquarium where you work, a fish has gone...Ch. 30 - Prob. 43PCh. 30 - You've dropped your car keys at night off the end...Ch. 30 - Laser eye surgery uses ultraviolet light with...Ch. 30 - Prob. 46PCh. 30 - Where and in what direction would the main beam...Ch. 30 - Find the speed of light in a material for which...Ch. 30 - Prob. 49PCh. 30 - For the interface between air (refractive index 1)...Ch. 30 - A scuba diver sets off a camera flash at depth h...Ch. 30 - Suppose the red and blue beams of Exercise 26 are...Ch. 30 - In cataract surgery, ophthalmologists replace the...Ch. 30 - In a ruby laser, light is produced in a solid rod...Ch. 30 - An optical fiber with circular cross section has...Ch. 30 - A cylindrical tank 2.4 m deep is full to the brim...Ch. 30 - For what diameter tank in Problem 50 will sunlight...Ch. 30 - Prob. 58PCh. 30 - Prob. 59PCh. 30 - (a) Differentiate the result of Problem 55 to show...Ch. 30 - Prob. 61PCh. 30 - Show that a three-dimensional corner reflector...Ch. 30 - Fermat's principle states that a light ray's path...Ch. 30 - Prob. 64PCh. 30 - A slab of transparent material has thickness d and...Ch. 30 - For common materials like glass, the wavelength...Ch. 30 - Figure 30.25a depicts lights path over a hot road,...Ch. 30 - Prob. 68PPCh. 30 - Figure 30.25b shows how continuous refraction in...Ch. 30 - The refractive index in the ionosphere is strongly...
Additional Science Textbook Solutions
Find more solutions based on key concepts
A physics student uses a 115.00-V immersion heater to heat 400.00 grams (almost two cups) of water for herbal t...
University Physics Volume 2
The maximum acceleration of the car with rear wheel drive is often less than the maximum deceleration.
Physics (5th Edition)
4. Distinguish between force and pressure. Compare their units of measurement.
Conceptual Physical Science (6th Edition)
8. A 1000 kg car pushes a 2000 kg truck that has a dead battery. When the driver steps on the accelerator, the ...
Physics for Scientists and Engineers: A Strategic Approach, Vol. 1 (Chs 1-21) (4th Edition)
Determine the accuracy (the number of significant digits) in each measurement:
29. 20,570 lb
Applied Physics (11th Edition)
10. What is the equivalent resistance of each group of resistors shown in Figure P23.10?
Figure P23.10
College Physics: A Strategic Approach (3rd Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- The time-averaged intensity of a wave of visible light propagating in a vacuum is 1,800 watts/m2. What is the maximum value of the electric field for this wave? a. 2,080 N/C b. 1,160 N/C c. 1,500 N/C d. 1,750 N/C e. 1,320 N/Carrow_forward5. Light can be described as an electromagnetic wave. The optical lenses also can be modeled as dielectric lenses which can be used to collimate electromagnetic fields. The following figure shows the circular surface in the left and planar surface in the right of the lens. Let E1(r, ø, z) = {10, -6, 0}, what must be the dielectric constant of the lens in order that E3(r, ø, z) in region 3 is parallel to the x-axis? y. To 45° 3arrow_forwardAn electromagnetic wave is allowed to reflect from a mirror in a measurement of radiation pressure. If Erms is doubled while the wave frequency is cut in half, then the radiation pressure will a. be cut in half b. get 4 times larger c. remain the same d. get 2 times largerarrow_forward
- a. Determine the frequency of electromagnetic radiation which would have a wavelength of 1.0 mile (1.6 km).b. What part of the electromagnetic spectrum does this fall within?arrow_forwardIn an electromagnetic wave, when the electric field, E, is a maximum, the magnetic field, B, is: a. at a value between its maximum or minimum. b. a minimum. c. any of these. d. zero. e. a maximum.arrow_forwardThe vector direction of the electromagnetic field in a propagating light wave is called __________ . a. the polarization b. the frequency c. the amplitude d. the propagation constant e. the phasearrow_forward
- 5. At 2.1 km from the transmitter, the peak electric field of a radio wave is 350 mV/m. A. What is the transmitter's power output, assuming it broadcasts uniformly in all directions? B. What is the peak electric field 10 km from the transmitter?arrow_forwardDetermine which part of the electromagnetic spectrum each of the following waves lies in. Part (a) Waves with a frequency f = 10.0 kHz. Visible UV Radio IR X-ray Microwave Part (b) Waves where λ = 650 nm. Radio Microwave Visible X-ray IR UV Part (c) Waves with a frequency f = 1.25 × 109 Hz. UV X-ray Microwave Visible Radio IR Part (d) Waves with a wavelength of λ = 0.30 nm. IR Visible X-ray Microwave UV Radioarrow_forward4. An industrial laser is used to burn a hole through a piece of metal. The average intensity of the light is 1.20 x 10° W/m2. What is the rms value of the electric field in the electromagnetic wave emitted by the laser? N/Carrow_forward
- Consider a highly polished reflective surface. WHat would be the maximum radiation pressure excerted by sunlight in space (S = 1350W /m²). O 0.12PA 4.5 × 10–5 Pa 9.0 × 10–6Pa 2.3 x 10-6 Pa O 1.4 x 10-² Paarrow_forward7. Which of the following wavelength of electromagnetic waves is/are in NOT in the visible region? A. 890 mB. 680 nmC. 750 micrometerD. 0.50 micrometerarrow_forward3. An electromagnetic wave has an electric field amplitude of 4x10 V/m and a frequency of 8x10° Hz. The wave propagates in the +y direction. a. What is the wavelength of the wave? b. Explicitly write out solutions for the electric and magnetic wave components (E = ? and B = ?).arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage LearningCollege PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
- Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Physics for Scientists and Engineers, Technology ...
Physics
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
What Are Electromagnetic Wave Properties? | Physics in Motion; Author: GPB Education;https://www.youtube.com/watch?v=ftyxZBxBexI;License: Standard YouTube License, CC-BY