Physics for Scientists and Engineers with Modern Physics, Technology Update
9th Edition
ISBN: 9781305401969
Author: SERWAY, Raymond A.; Jewett, John W.
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Videos
Question
Chapter 38, Problem 9CQ
To determine
Prove that the intensity of radio waves towards the city will increase and will decrease the intensity in other directions on introducing time delays in transmission.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
#2: The ideal size (most efficient) for a broadcast antenna with one end on the ground is one-fourth the wavelength (λ/4) of the EM wave being sent out. If a new radio station has such an antenna that is 50.0m high, what frequency does it boradcast most efficiently? Is this in the AM or FM band. This analogous to what phenomenom encountered in our study of sound wave? (Note: AM band ranges from 540 to 1600 kHz, and FM band is between 88 to 108 MHz)
A communication system has two identical antennas operated at 6 GHz and aligned for maximum
reception to each other. To allow the receiver antenna to detect the transmitted signal of 25 W over
a distance of 40 km, the receivied signal power must be greater than or equal to -25 dBm. Calculate
the required receiving antenna gain to detect the signal efficintly.
(11%) Problem 5: Consider the 100-MHz radio waves used in an MRI device.
33% Part (a) What is the wavelength, in meters, of these radio waves?
A 33% Part (b) If the frequencies are swept over a +9.5 MHz range centered on 100 MHz, what is the minimum, in meters, of the range of wavelengths
emitted?
33% Part (c) What is the maximum, in meters, of this wavelength range?
Grade Summary
Amax
Deductions
0%
Potential
100%
Chapter 38 Solutions
Physics for Scientists and Engineers with Modern Physics, Technology Update
Ch. 38.2 - Suppose the slit width in Figure 37.4 is made half...Ch. 38.2 - Prob. 38.2QQCh. 38.3 - Cats eyes have pupils that can be modeled as...Ch. 38.3 - Suppose you are observing a binary star with a...Ch. 38.4 - Ultraviolet light of wavelength 350 nm is incident...Ch. 38.6 - A polarizer for microwaves can be made as a grid...Ch. 38.6 - Prob. 38.7QQCh. 38 - Prob. 1OQCh. 38 - Prob. 2OQCh. 38 - Prob. 3OQ
Ch. 38 - Prob. 4OQCh. 38 - Prob. 5OQCh. 38 - Prob. 6OQCh. 38 - Prob. 7OQCh. 38 - Prob. 8OQCh. 38 - Prob. 9OQCh. 38 - Prob. 10OQCh. 38 - Prob. 11OQCh. 38 - Prob. 12OQCh. 38 - Prob. 1CQCh. 38 - Prob. 2CQCh. 38 - Prob. 3CQCh. 38 - Prob. 4CQCh. 38 - Prob. 5CQCh. 38 - Prob. 6CQCh. 38 - Prob. 7CQCh. 38 - Prob. 8CQCh. 38 - Prob. 9CQCh. 38 - Prob. 10CQCh. 38 - Prob. 11CQCh. 38 - Prob. 12CQCh. 38 - Prob. 1PCh. 38 - Prob. 2PCh. 38 - Prob. 3PCh. 38 - Prob. 4PCh. 38 - Prob. 5PCh. 38 - Prob. 6PCh. 38 - Prob. 7PCh. 38 - Prob. 8PCh. 38 - Prob. 9PCh. 38 - Prob. 10PCh. 38 - Prob. 11PCh. 38 - Coherent light of wavelength 501.5 nm is sent...Ch. 38 - Prob. 13PCh. 38 - Prob. 14PCh. 38 - Prob. 15PCh. 38 - Prob. 16PCh. 38 - Prob. 17PCh. 38 - Prob. 18PCh. 38 - What is the approximate size of the smallest...Ch. 38 - Prob. 20PCh. 38 - Prob. 21PCh. 38 - Prob. 22PCh. 38 - Prob. 23PCh. 38 - Prob. 24PCh. 38 - Prob. 25PCh. 38 - Prob. 26PCh. 38 - Consider an array of parallel wires with uniform...Ch. 38 - Prob. 28PCh. 38 - Prob. 29PCh. 38 - A grating with 250 grooves/mm is used with an...Ch. 38 - Prob. 31PCh. 38 - Prob. 32PCh. 38 - Light from an argon laser strikes a diffraction...Ch. 38 - Show that whenever white light is passed through a...Ch. 38 - Prob. 35PCh. 38 - Prob. 36PCh. 38 - Prob. 37PCh. 38 - Prob. 38PCh. 38 - Prob. 39PCh. 38 - Prob. 40PCh. 38 - Prob. 41PCh. 38 - Prob. 42PCh. 38 - Prob. 43PCh. 38 - Prob. 44PCh. 38 - Prob. 45PCh. 38 - Prob. 46PCh. 38 - Prob. 47PCh. 38 - Prob. 48PCh. 38 - Prob. 49PCh. 38 - Prob. 50PCh. 38 - Prob. 51PCh. 38 - Prob. 52PCh. 38 - Prob. 53APCh. 38 - Prob. 54APCh. 38 - Prob. 55APCh. 38 - Prob. 56APCh. 38 - Prob. 57APCh. 38 - Prob. 58APCh. 38 - Prob. 59APCh. 38 - Prob. 60APCh. 38 - Prob. 61APCh. 38 - Prob. 62APCh. 38 - Prob. 63APCh. 38 - Prob. 64APCh. 38 - Prob. 65APCh. 38 - Prob. 66APCh. 38 - Prob. 67APCh. 38 - Prob. 68APCh. 38 - Prob. 69APCh. 38 - Prob. 70APCh. 38 - Prob. 71APCh. 38 - Prob. 72APCh. 38 - Prob. 73APCh. 38 - Light of wavelength 632.8 nm illuminates a single...Ch. 38 - Prob. 75CPCh. 38 - Prob. 76CPCh. 38 - Prob. 77CPCh. 38 - Prob. 78CPCh. 38 - Prob. 79CP
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
- Two identical sources A and B emit in-phase plane radio waves with frequency 3.17E4 Hz and intensity 1.83E2 W/m2. A detector placed at location P closer to source B than source A detects a destructive interference. What is the minimum value of the path difference |AP–BP| (in m)?arrow_forwardTwo antennai (which may or may not be in phase with each other) transmit a radio wave at an AM frequency of 1500 kHz. While driving by on a semi-circular road around these antennae, you notice that there are only three totally destructive locations (one at the centerline and two at the same angle above and below the centerline as shown). What is the path length difference of the radio waves for the topmost destructive location?arrow_forwardElectromagnetic wave of unknown wavelength passes through the slit of width a =3.79 µm and the first minimum is detected at angular position 0 =6.82°. What is the wavelength of the electromagnetic wave? Provide your answer in nanometers, round it to one decimal place.arrow_forward
- Radio station KSON in San Diego broadcasts at both 1240 kHz (AM) and 97.3 MHz (FM). a) Which of these signals, AM or FM, has the longer wavelength? b) How long is each? Answer: [λAM = 242 m, [λFM = 3.08 m] but how do you solve for it?arrow_forwardA naval radar system operates at a wavelength of 1.3 cm, transmitted from a circular antenna of diameter d = 2.4 m. At a distance of 5.5 km, what is the smallest distance between two small boats such that the radar system can resolve them as two separate objects? Be careful with units: recall that 1 cm = 10-2 m and 1 km = 10³ m. Distance of separation = m If the separation between two small boats is only 16 m, what is the maximum distance from the antenna that they can be such that the antenna can resolve them as two separate objects? Distance from antenna = kmarrow_forwardTwo radio antennas C and Rare 7.4 m apart are radiating in phase at 115 MHz. When a receiver is placed 100 m from both receivers, the intensity is lo. The receiver is then moved to point G which is 1.59 m closer to antenna C than antenna R. Find the intensity at point G in terms of lo. Round your answer to 3 decimal places.arrow_forward
- If the largest dimension of the receiving antenna operating at a frequency of 9.5 GHz is 10 cm, then the minimum distance that guarantees measurement in the far field region isarrow_forwardTwo radio antennas are separated by 1.60 m. Both broadcast identical 750 MHz waves. If you walk around the antennas in a circle of radius 10.0 m, how many maxima will you detect?arrow_forwardIn the figure below, sources A and B emit long-range radio waves of wavelength 1 = 450 m, with the phase of the emission from A ahead of that from source B by 90°. The distance ra from A to detector D is greater than the corresponding distance rg by 60 m. What is the phase difference at D? 0.17 TBarrow_forward
- (1) (a) What is the wavelength of a 25.75 × 10° Hz radar signal? (b) What is the frequency of an X-ray with wave- length 0.12 nm? (1) An EM wave has frequency 8.56 x 10¹4 Hz. What is its wavelength, and how would we classify it? 1.165x 10 m 2.5 x 10⁰ Hz 3.50 x 10 m ultraviolet.arrow_forwardFrank D. Drake, an investigator in the SETI (Search for Extra-Terrestrial Intelligence) program, once said that the large radio telescope in Arecibo, Puerto Rico , “can detect a signal which lays down on the entire surface of the earth a power of only one picowatt.” (a) What is the power that would be received by the Arecibo antenna for such a signal? The antenna diameter is 300 m. (b) What would be the power of an isotropic source at the center of our galaxy that could provide such a signal? The galactic center is 2.2 * 10^4 ly away. A light-year is the distance light travels in one year.arrow_forwardLight from glowing hydrogen contains many discrete spectral lines, of which two are Ha (hydrogen-alpha) and HB (hydrogen-beta), with wavelengths of 656.3 nm and 486.1 nm, respectively. Find the first- order angular separation between these wavelengths in a spectrometer that uses a grating with 6000 slits per cm.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 Learning
University Physics Volume 3PhysicsISBN:9781938168185Author:William Moebs, Jeff SannyPublisher:OpenStax
College PhysicsPhysicsISBN:9781285737027Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
University Physics Volume 3
Physics
ISBN:9781938168185
Author:William Moebs, Jeff Sanny
Publisher:OpenStax
College Physics
Physics
ISBN:9781285737027
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Polarization of Light: circularly polarized, linearly polarized, unpolarized light.; Author: Physics Videos by Eugene Khutoryansky;https://www.youtube.com/watch?v=8YkfEft4p-w;License: Standard YouTube License, CC-BY