College Physics: A Strategic Approach (3rd Edition)
3rd Edition
ISBN: 9780321879721
Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Textbook Question
Chapter 25, Problem 33P
A radio antenna broadcasts a 1.0 MHz radio wave with 25 kW of power. Assume that the
a. What is the wave's intensity 30 km from the antenna?
b. What is the electric field amplitude at this distance?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A radio antenna broadcasts a 1.0 MHz radio wave with 25 kW of power. Assume that the radiation is emitted uniformly in all directions.a. What is the wave’s intensity 30 km from the antenna?b. What is the electric field amplitude at this distance?
A radio antenna broadcasts a 1.0 MHz radio wave with 26.0 kW of power. Assume that the radiation is emitted uniformly in all directions.
a. What is the wave's intensity 30.0 km from the antenna?
b. What is the electric field amplitude at this distance?
A LASIK vision correction system uses a laser that emits 10-ns-long pulses of light,
each with 2.5 mJ of energy. The laser is focused to a 0.85-mm-diameter circle.
a. What is the average power of each laser pulse in units of watts?
b. Determine the intensity of the laser light at the focus point.
c. What is the electric field amplitude of the laser light at the focus point?
Chapter 25 Solutions
College Physics: A Strategic Approach (3rd Edition)
Ch. 25 - Prob. 1CQCh. 25 - The rapid vibration accompanying the swimming...Ch. 25 - Prob. 3CQCh. 25 - Prob. 4CQCh. 25 - Prob. 5CQCh. 25 - Prob. 6CQCh. 25 - The power lines that run through your neighborhood...Ch. 25 - The magnetic flux passing through a coil of wire...Ch. 25 - There is a counterclockwise induced current in the...Ch. 25 - A magnet dropped through a clear plastic tube...
Ch. 25 - The conducting loop in Figure Q25.11 is moving...Ch. 25 - Figure Q25.12 shows two concentric, conducting...Ch. 25 - Figure Q25.13 shows conducting loops next to each...Ch. 25 - Two loops of wire are stacked vertically, one...Ch. 25 - Prob. 15CQCh. 25 - A bar magnet is pushed toward a loop of wire, as...Ch. 25 - Prob. 17CQCh. 25 - A metal wire is resting on a U-shaped conducting...Ch. 25 - Prob. 19CQCh. 25 - Old-fashioned roof-mounted television antennas...Ch. 25 - An AM radio detects the oscillating magnetic field...Ch. 25 - Prob. 22CQCh. 25 - Prob. 23CQCh. 25 - The frequency of a beam of light is increased but...Ch. 25 - Arc welding uses electric current to make an...Ch. 25 - A circular loop of wire has an area of 0.30 m2. It...Ch. 25 - In Figure Q25.27, a square loop is rotating in the...Ch. 25 - A diamond-shaped loop of wire is pulled at a...Ch. 25 - Figure Q25.29 shows a triangular loop of wire in a...Ch. 25 - A device called a flip coil can be used to measure...Ch. 25 - The electromagnetic waves that carry FM radio...Ch. 25 - The beam from a laser is focused with a lens,...Ch. 25 - A spacecraft in orbit around the moon measures its...Ch. 25 - A 6.0 mW vertically polarized laser beam passes...Ch. 25 - Communication with submerged submarines via radio...Ch. 25 - Prob. 36MCQCh. 25 - Prob. 1PCh. 25 - Prob. 2PCh. 25 - A l0-cm-long wire is pulled along a U-shaped...Ch. 25 - Figure P25.4 shows a 15-cm-long metal rod pulled...Ch. 25 - Prob. 5PCh. 25 - In the rainy season, the Amazon flows fast and...Ch. 25 - A delivery truck with 2.8-m-high aluminum sides is...Ch. 25 - Prob. 8PCh. 25 - Prob. 9PCh. 25 - Prob. 10PCh. 25 - Prob. 11PCh. 25 - At a typical location in the United States, the...Ch. 25 - Prob. 13PCh. 25 - A magnet and a coil are oriented as shown in...Ch. 25 - A 1000-turn coil of wire 2.0 cm in diameter is in...Ch. 25 - Figure P25.I6 shows a 100-turn coil of wire of...Ch. 25 - Figure P25.17 shows a 10-cm-diameter loop in three...Ch. 25 - The plane of a loop of wire is perpendicular to a...Ch. 25 - Prob. 19PCh. 25 - Prob. 20PCh. 25 - Prob. 21PCh. 25 - A 5.0-cm-diameter loop of wire has resistance 1.2...Ch. 25 - Prob. 23PCh. 25 - Prob. 24PCh. 25 - Prob. 25PCh. 25 - Prob. 26PCh. 25 - A microwave oven operates at 2.4 GHz with an...Ch. 25 - The maximum allowed leakage of microwave radiation...Ch. 25 - Prob. 29PCh. 25 - Prob. 30PCh. 25 - At what distance from a 10 mW point source of...Ch. 25 - Prob. 32PCh. 25 - A radio antenna broadcasts a 1.0 MHz radio wave...Ch. 25 - A 200 MW laser pulse is focused with a lens to a...Ch. 25 - The intensity of a polarized electromagnetic wave...Ch. 25 - Prob. 36PCh. 25 - Prob. 37PCh. 25 - Prob. 38PCh. 25 - The polarization of a helium-neon laser can change...Ch. 25 - Prob. 40PCh. 25 - Prob. 41PCh. 25 - Prob. 42PCh. 25 - One recent study has shown that x rays with a...Ch. 25 - Prob. 44PCh. 25 - Prob. 45PCh. 25 - Prob. 46PCh. 25 - Prob. 47PCh. 25 - Prob. 48PCh. 25 - Prob. 49PCh. 25 - A particular species of copepod, a small marine...Ch. 25 - Prob. 51PCh. 25 - Prob. 52PCh. 25 - While using a dimmer switch to investigate a new...Ch. 25 - Prob. 54PCh. 25 - Prob. 55PCh. 25 - A python can detect thermal radiation with...Ch. 25 - If astronomers look toward any point in outer...Ch. 25 - A 100-turn, 2.0-cm diameter coil is at rest in a...Ch. 25 - A 25-turn, 10.0-cm-diameter coil is oriented in a...Ch. 25 - People immersed in strong unchanging magnetic...Ch. 25 - Prob. 61GPCh. 25 - Prob. 62GPCh. 25 - A 20-cm-long, zero-resistance wire is pulled...Ch. 25 - A TMS (transeranial magnetic stimulation) device...Ch. 25 - The 10-cm-wide, zero-resistance wire shown in...Ch. 25 - Experiments to study vision often need to track...Ch. 25 - A LASIK vision correction system uses a laser that...Ch. 25 - When the Voyager 2 spacecraft passed Neptune in...Ch. 25 - A new cordless phone emits 4.0 mW at 5.8 GHz. The...Ch. 25 - In reading the instruction manual that came with...Ch. 25 - Unpolarized light passes through a vertical...Ch. 25 - Prob. 73GPCh. 25 - Prob. 74GPCh. 25 - What is the wavelength of 27 MHz radio waves? A....Ch. 25 - If the frequency of the radio waves is increased,...Ch. 25 - Prob. 77MSPPCh. 25 - The metal detector will not detect insulators...Ch. 25 - A metal detector can detect the presence of metal...Ch. 25 - Which of the following changes would not produce a...
Additional Science Textbook Solutions
Find more solutions based on key concepts
Name the components (including muscles) of the thoracic cage. List the contents of the thorax.
Human Physiology: An Integrated Approach (8th Edition)
The following data were obtained from a disk-diffusion test. Antibiotic Zone of Inhibition A 15 mm B 0 mm c 7 m...
Microbiology: An Introduction
Plants use the process of photosynthesis to convert the energy in sunlight to chemical energy in the form of su...
Campbell Essential Biology with Physiology (5th Edition)
The mammalian trachea and esophagus both connect to the (A) pharynx. (B) stomach. (C) large intestine. (D) rect...
Campbell Biology (11th Edition)
All of the following processes are involved in the carbon cycle except: a. photosynthesis b. cell respiration c...
Human Biology: Concepts and Current Issues (8th Edition)
2. Define equilibrium population. Outline the conditions that must be met for a population to stay in genetic e...
Biology: Life on Earth (11th 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
- A 2.50-m-diameter university communications satellite dish receives TV signals that have a maximum electric field strength (for one channel) of 7.50 (V/m. (See Figure 24.28.) (a) What is the intensity of this wave? (b) What is the power received by the antenna? (c) If the orbiting satellite broadcasts uniformly over an area of 1.501013m2 (a large fraction of North America), how much power does it radiate? Figure 24.28 Satellite dishes receive TV signals sent from orbit. Although the signals are quite weak, the receiver can detect them by being tuned to resonate at their frequency.arrow_forwardIf you wish to detect details of the size of atoms (about 0.2 nm) with electromagnetic radiation, it must have a wavelength of about this size. (a) What is its frequency? (b) What type of electromagnetic radiation might this be?arrow_forwardA 2.50-rn-diameter university communications satellite dish receives TV sigia1s that have a maximum electric field strength (for one channel) of 7.50V/m (see below). (a) What is the intensity of this wave? (b) What is the power received by the antenna? (C) If the orbiting satellite broadcasts uniformly over an area of 1.501013m2 (a large fraction of North America), how much power does it radiate?arrow_forward
- a. What is the magnetic field amplitude of an electromagnetic wave whose electric field amplitude is 100 V/m ? b. What is the intensity of the wave?arrow_forwardThe time-averaged intensity of sunlight that is incident at the upper atmosphere of the earth is 1,380 watts/m2. What is the maximum value of the electric field at this location? a. 660 N/C b. 1,950 watts/m2 c. 1,200 N/C d. 840 N/C e. 1,020 N/Carrow_forwardAssume the radiation from a heat lamp is monochromatic, with a wavelength of 1.5 μm . I =3.313 kW/m^2. a. What is the peak electric field strength, in kilovolts per meter? b. Find the peak magnetic field strength, in microtesla. c. How long, in seconds, will it take to increase the temperature of the 3.95-kg shoulder by 2.00°C, assuming that the shoulder absorbs all the radiation from the lamp and given that its specific heat is 3.47 × 103 J/(kg⋅°C)?arrow_forward
- At the top of Earth’s atmosphere, the time-averaged Poynting vector associated with sunlight has a magnitude of about 1.49 kW/m2. a. What is the maximum value for the electric field of a wave of this intensity? Give your answer in volts per meter. b. What is the maximum value for the magnetic field of a wave of this intensity? Give your answer in teslas. c. What is the total power radiated by the sun? Assume that the Earth is 1.5×10111.5×1011 m from the Sun and that sunlight is composed of electromagnetic plane waves. Give your answer in watts.arrow_forwardLasers can be constructed to produce an extremely high-intensity electromagnetic wave for a very brief time. Such lasers are called "pulsed lasers". They are used to ignite nuclear fusion, for example. Such a laser may produce an electromagnetic wave with a maximum electric field strength of 0.61 × 1011 V / m for a time of 0.95 ns. a. What is the maximum magnetic field strength in the wave B0, in teslas? b. What is the intensity of the beam I, in watts per square meter? c. How much energy, in kilojoules, does one pulse of the laser beam deliver to a 1.00 mm2 area?arrow_forwardIn a plane radio wave, the maximum value of the electric field component is 6.20 V/m. a. Calculate the maximum value of the magnetic field component. b. Calculate the wave intensity.arrow_forward
- The microwave radiation left over from the Big Bang explosion of the universe has an average energy density of 4.14 × 10-14 J/m³. What is the rms value of the electric field of this radiation? Number i Unitsarrow_forwardAnswer the sub-questions that follow. Consider the given electromagnetic wave travelling in a vacuum with electric field given.arrow_forwardSatellite TV is broadcast from satellites that orbit 37,000 km above the earth’s surface. Their antennas broadcast a 15 kW microwave signal that covers most of North America, an area of about 2.5 x 107 km2.a. What is the total power that strikes a 46-cm-diameter ground-based dish antenna?b. The dish antenna focuses the incoming wave to a 1.0 cm2 area. What is the amplitude of the electric field at this focus?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage LearningCollege PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
What Are Electromagnetic Wave Properties? | Physics in Motion; Author: GPB Education;https://www.youtube.com/watch?v=ftyxZBxBexI;License: Standard YouTube License, CC-BY