College Physics: A Strategic Approach (4th Edition)
4th Edition
ISBN: 9780134609034
Author: Randall D. Knight (Professor Emeritus), Brian Jones, Stuart Field
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Question
Chapter 17, Problem 66GP
a.
To determine
To find: The diameter of the radar beam.
b.
To determine
To find: The average microwave intensity.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Biologists use optical tweezers to manipulate micron-sized objects using a beam of light. In this technique, a laser beam is focused to a very small-diameter spot. Because small particles are attracted to regions of high light intensity, the focused beam can be used to “grab” onto particles and manipulate them for various experiments. In one experiment, a 10 mW laser beam is focused to a spot that has a diameter of 0.62 μm.a. What is the intensity of the light in this spot?b. What is the amplitude of the electric field?
You investigated a new material and subjected it to the following optical experiments. During a transmission experiment, you observed that, at a thickness of 30 mm, the material transmits only 50% of the intensity.
a. What thickness is required to transmit 25% of the incident intensity? b. What fraction of the incident intensity is absorbed by the material for the thickness solved in a?
Assume 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)?
Chapter 17 Solutions
College Physics: A Strategic Approach (4th Edition)
Ch. 17 - The frequency of a light wave in air is 5.3 1014...Ch. 17 - Rank in order the following according to their...Ch. 17 - Prob. 3CQCh. 17 - The wavelength of a light wave is 700 nm in air;...Ch. 17 - Prob. 5CQCh. 17 - A double-slit interference experiment shows...Ch. 17 - In a double-slit interference experiment,...Ch. 17 - Prob. 8CQCh. 17 - Prob. 9CQCh. 17 - Prob. 10CQ
Ch. 17 - Prob. 11CQCh. 17 - Prob. 12CQCh. 17 - Prob. 14CQCh. 17 - Prob. 16CQCh. 17 - An oil film on top of water has one patch that is...Ch. 17 - Should the antireflection coating of a microscope...Ch. 17 - Prob. 20CQCh. 17 - Prob. 21CQCh. 17 - Prob. 23MCQCh. 17 - The frequency of a light wave in air is 4.6 1014...Ch. 17 - Light passes through a diffraction grating with a...Ch. 17 - Blue light of wavelength 450 nm passes through a...Ch. 17 - Yellow light of wavelength 590 nm passes through a...Ch. 17 - Light passes through a 10-m-wide slit and is...Ch. 17 - Prob. 29MCQCh. 17 - Prob. 30MCQCh. 17 - You want to estimate the diameter of a very small...Ch. 17 - Prob. 1PCh. 17 - a. How long (in ns) does it take light to travel...Ch. 17 - A 5.0-cm-thick layer of oil (n = 1.46) is...Ch. 17 - A light wave has a 670 nm wavelength in air. Its...Ch. 17 - A helium-neon laser beam has a wavelength in air...Ch. 17 - Prob. 6PCh. 17 - Prob. 7PCh. 17 - Light from a sodium lamp (= 589 nm) illuminates...Ch. 17 - Two narrow slits are illuminated by light of...Ch. 17 - Prob. 10PCh. 17 - A double-slit experiment is performed with light...Ch. 17 - Prob. 12PCh. 17 - Two narrow slits are 0.12 mm apart. Light of...Ch. 17 - A diffraction grating with 750 slits/mm is...Ch. 17 - Prob. 16PCh. 17 - A 1.0-cm-wide diffraction grating has 1000 slits....Ch. 17 - Prob. 18PCh. 17 - The human eye can readily detect wavelengths from...Ch. 17 - A diffraction grating with 600 lines/mm is...Ch. 17 - A 500 line/mm diffraction grating is illuminated...Ch. 17 - What is the thinnest film of MgF2 (n = 1.38) on...Ch. 17 - A very thin oil film (n = 1.25) floats on water (n...Ch. 17 - Antireflection coatings can be used on the inner...Ch. 17 - Solar cells are given antireflection coatings to...Ch. 17 - Prob. 28PCh. 17 - A thin film of MgF2 (n = 1.38) coats a piece of...Ch. 17 - Prob. 30PCh. 17 - A soap bubble is essentially a thin film of water...Ch. 17 - Prob. 32PCh. 17 - A helium-neon laser (= 633 nm) illuminates a...Ch. 17 - For a demonstration, a professor uses a razor...Ch. 17 - A 0.50-mm-wide slit is illuminated by light of...Ch. 17 - Prob. 36PCh. 17 - The second minimum in the diffraction pattern of a...Ch. 17 - Prob. 38PCh. 17 - A 0.50-mm-diameter hole is illuminated by light of...Ch. 17 - Light from a helium-neon laser (= 633 nm) passes...Ch. 17 - You want to photograph a circular diffraction...Ch. 17 - Prob. 42PCh. 17 - Infrared light of wavelength 2.5 m illuminates a...Ch. 17 - Prob. 44PCh. 17 - An advanced computer sends information to its...Ch. 17 - Prob. 46GPCh. 17 - Prob. 47GPCh. 17 - Prob. 48GPCh. 17 - The two most prominent wavelengths in the light...Ch. 17 - White light (400-700 nm) is incident on a 600...Ch. 17 - A miniature spectrometer used for chemical...Ch. 17 - Prob. 52GPCh. 17 - Prob. 53GPCh. 17 - The shiny surface of a CD is imprinted with...Ch. 17 - The wings of some beetles have closely spaced...Ch. 17 - Light emitted by element X passes through a...Ch. 17 - Light of a single wavelength is incident on a...Ch. 17 - A sheet of glass is coated with a 500-nm-thick...Ch. 17 - A laboratory dish, 20 cm in diameter, is half...Ch. 17 - You need to use your cell phone, which broadcasts...Ch. 17 - Prob. 61GPCh. 17 - Prob. 62GPCh. 17 - Prob. 63GPCh. 17 - Prob. 64GPCh. 17 - One day, after pulling down your window shade, you...Ch. 17 - Prob. 66GPCh. 17 - Prob. 67GPCh. 17 - In the laser range-finding experiments of Example...Ch. 17 - Prob. 69MSPPCh. 17 - Prob. 70MSPPCh. 17 - Prob. 71MSPP
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) The ideal size (most efficient) for a broadcast antenna with one end on the ground is one-fourth the wavelength (/4) of the electromagnetic radiation being sent out. If a new radio station has such an antenna that is 50.0 m high, what frequency does it broadcast most efficiently? Is this in the AM or FM band? (b) Discuss the analogy of the fundamental resonant mode of an air column closed at one end to the resonance of currents on an antenna that is one-fourth their wavelength.arrow_forward(a) What is the frequency of the 193-nm ultraviolet radiation used in laser eye surgery? (b) Assuming the accuracy with which this electromagnetic radiation can ablate (reshape) the cornea is directly proportional to wavelength, how much more accurate can this UV radiation be than the shortest visible wavelength of light?arrow_forwardA 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?arrow_forward
- Satellite 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_forward5. 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_forwardUsing a dish-shaped mirror, a solar cooker concentrates the sun’s energy onto a pot for cooking. A cookerwith a 1.7-m-diameter dish focuses the sun’s energy onto a pot with a diameter of 25 cm. Given that the intensity of sunlight is about 1000 W/m2,a. How much solar power does the dish capture?b. What is the intensity at the base of the pot?arrow_forward
- 3.10 The earth is 146.9 million km from the sun, and receives light with an intensity of 1.36 kW/m2. Mars is 227.9 million km from the sun. a. Calculate the intensity of sunlight for a satellite that is in the vicinity of Mars. b. If the satellite has solar cells with an efficiency of 29%, what area is required to generate 1 kW of electrical power?arrow_forwardProblem 1. A geostationary satellite is located 36,000 kilo- meters (km) away from the surface of the Earth. Once a minute it takes a digital picture and transmits the data to a base station on Earth. The rate of transmission is 10 Mbps and the propogation speed is 3.0 × 108 m/s. You may assume the actual time required to take the picture is negligible. a. What is the propagation delay of the link? b. The bandwidth-delay product is defined to be Rxdprop where dprop is the propagation delay. Calculate the bandwidth-delay product Rxdprop where deprop is the propagation delay. c. Let x denote the size of the picture in bits. What is the minimum value for x so that the satellite is continuously transmitting data over the link?arrow_forwarda.Two points on earth’s surface at a distance of 1200 km are communicating using radio waves through an ionospheric layer whose height is 280 km. The maximum electron density of the layer is 6.95×1011 m−3. Calculate the value of frequency fmuf.b.An Ionosphere layer extends from the stratosphere upwards for about 250 mi and it consists three sub-layers. Discuss the effects of these sub-layers on wave propagation.arrow_forward
- A beam of blue light, whose wavelength in vacuum is λvacuum = 510nm, is incident onto a transparent material material n=2. What is its wavelength λ and frequency f inside the material? a. 510nm, (3/1020) x 1017 Hz b. 510nm, (3/510) x 1017 Hz c. 510nm, (3/255) x 1017 Hz d. 255nm, (3/510) x 1017 Hz e. 255nm, (3/255) x 1017 Hzarrow_forwardAt 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_forwardScientists report the discovery of a new star in the Milky Way. Scientists report it is emitting energy with a wavelength of 10-² m. You dash outside with your own reflecting telescope to glimpse this new star. To your disappointment , you are not able to see it . Referring to the figure above , which best explains why can't you see the new star ? A It isn't shining bright enough for a telescope of this size to pick it up . B The atmosphere is interfering with your telescope's ability to detect the star. C The energy is too low to be picked up by your telescope . D Your telescope can only see things in the visible light portion of the spectrumarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
College PhysicsPhysicsISBN:9781938168000Author:Paul Peter Urone, Roger HinrichsPublisher:OpenStax College
College Physics
Physics
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:OpenStax College
Laws of Refraction of Light | Don't Memorise; Author: Don't Memorise;https://www.youtube.com/watch?v=4l2thi5_84o;License: Standard YouTube License, CC-BY