Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN: 9781305116399
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 34, Problem 34.45P
A Marconi antenna, used by most AM radio stations, consists of the top half of a Hertz antenna (also known as a half-wave antenna because its length is λ/2). The lower end of this Marconi (quarter-wave) antenna is connected to Earth ground, and the ground itself serves as the missing lower hall. What are the heights of the Marconi antennas for radio stations broadcasting at (a) 560 kHz and (b) 1 600 kHz?
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Problem 4: Consider the 100-MHz radio waves used in an MRI device.
Part (a) What is the wavelength, in meters, of these radio waves?
λ = 3
Part (b) If the frequencies are swept over a ±12.5 MHz range centered on 100 MHz, what is the minimum, in meters, of the range of wavelengths emitted?
λmin =
Part (c) What is the maximum, in meters, of this wavelength range?
λmax =
Two identical short dipole antennas are driven in phase with each other with equal strength and
emit readiation at a wavelength of = 0.1 meters.
One antenna is oriented in the y-direction and is located at (x,y,z) = (0,0,0). The other antenna
is oriented in the z-direction and is located at (x,y,z) = (d,0,0) where d > 0.
What is the smallest value of d for which the radiated far-field at a point (x.y,z) = (X, ,0, 0), x,>>
d, and A, is circularly polarized?
What happens to the polarization if d is now doubled?
Problem 4: Consider the 100-MHz radio waves used in an MRI device.
Part (a) What is the wavelength, in meters, of these radio waves? Part (b) If the frequencies are swept over a ±14 MHz range centered on 100 MHz, what is the minimum, in meters, of the range of wavelengths emitted?
Part (c) What is the maximum, in meters, of this wavelength range?
Chapter 34 Solutions
Physics for Scientists and Engineers, Technology Update (No access codes included)
Ch. 34 - Prob. 34.1QQCh. 34 - What is the phase difference between the...Ch. 34 - Prob. 34.3QQCh. 34 - Prob. 34.4QQCh. 34 - If the antenna in Figure 33.11 represents the...Ch. 34 - Prob. 34.6QQCh. 34 - A radio wave of frequency on the order of 105 Hz...Ch. 34 - A spherical interplanetary grain of dust of radius...Ch. 34 - Prob. 34.2OQCh. 34 - A typical microwave oven operates at a frequency...
Ch. 34 - Prob. 34.4OQCh. 34 - Prob. 34.5OQCh. 34 - Which of the following statements are true...Ch. 34 - Prob. 34.7OQCh. 34 - Prob. 34.8OQCh. 34 - An electromagnetic wave with a peak magnetic field...Ch. 34 - Prob. 34.10OQCh. 34 - Prob. 34.11OQCh. 34 - suppose a creature from another planet has eyes...Ch. 34 - Prob. 34.2CQCh. 34 - Prob. 34.3CQCh. 34 - List at least three differences between sound...Ch. 34 - If a high-frequency current exists in a solenoid...Ch. 34 - Prob. 34.6CQCh. 34 - Prob. 34.7CQCh. 34 - Do Maxwells equations allow for the existence of...Ch. 34 - Prob. 34.9CQCh. 34 - What does a radio wave do to the charges in the...Ch. 34 - Prob. 34.11CQCh. 34 - An empty plastic or glass dish being removed from...Ch. 34 - Prob. 34.13CQCh. 34 - Prob. 34.1PCh. 34 - Prob. 34.2PCh. 34 - Prob. 34.3PCh. 34 - An election moves through a uniform electric field...Ch. 34 - A proton moves through a region containing a...Ch. 34 - Prob. 34.6PCh. 34 - Suppose you are located 180 in from a radio...Ch. 34 - A diathermy machine, used in physiotherapy,...Ch. 34 - The distance to the North Star, Polaris, is...Ch. 34 - Prob. 34.10PCh. 34 - Review. A standing-wave pattern is set up by radio...Ch. 34 - Prob. 34.12PCh. 34 - The speed of an electromagnetic wave traveling in...Ch. 34 - A radar pulse returns to the transmitterreceiver...Ch. 34 - Figure P34.15 shows a plane electromagnetic...Ch. 34 - Verify by substitution that the following...Ch. 34 - Review. A microwave oven is powered by a...Ch. 34 - Why is the following situation impossible? An...Ch. 34 - ln SI units, the electric field in an...Ch. 34 - At what distance from the Sun is the intensity of...Ch. 34 - If the intensity of sunlight at the Earths surface...Ch. 34 - Prob. 34.22PCh. 34 - A community plans to build a facility to convert...Ch. 34 - Prob. 34.24PCh. 34 - Prob. 34.25PCh. 34 - Review. Model the electromagnetic wave in a...Ch. 34 - High-power lasers in factories are used to cut...Ch. 34 - Consider a bright star in our night sky. Assume...Ch. 34 - What is the average magnitude of the Poynting...Ch. 34 - Prob. 34.30PCh. 34 - Review. An AM radio station broadcasts...Ch. 34 - Prob. 34.32PCh. 34 - Prob. 34.33PCh. 34 - Prob. 34.34PCh. 34 - A 25.0-mW laser beam of diameter 2.00 mm is...Ch. 34 - A radio wave transmits 25.0 W/m2 of power per unit...Ch. 34 - Prob. 34.37PCh. 34 - Prob. 34.38PCh. 34 - A uniform circular disk of mass m = 24.0 g and...Ch. 34 - The intensity of sunlight at the Earths distance...Ch. 34 - Prob. 34.41PCh. 34 - Assume the intensity of solar radiation incident...Ch. 34 - A possible means of space flight is to place a...Ch. 34 - Extremely low-frequency (ELF) waves that can...Ch. 34 - A Marconi antenna, used by most AM radio stations,...Ch. 34 - A large, flat sheet carries a uniformly...Ch. 34 - Prob. 34.47PCh. 34 - Prob. 34.48PCh. 34 - Two vertical radio-transmitting antennas are...Ch. 34 - Prob. 34.50PCh. 34 - What are the wavelengths of electromagnetic waves...Ch. 34 - An important news announcement is transmitted by...Ch. 34 - In addition to cable and satellite broadcasts,...Ch. 34 - Classify waves with frequencies of 2 Hz, 2 kHz, 2...Ch. 34 - Assume the intensity of solar radiation incident...Ch. 34 - In 1965, Arno Penzias and Robert Wilson discovered...Ch. 34 - The eye is most sensitive to light having a...Ch. 34 - Prob. 34.58APCh. 34 - One goal of the Russian space program is to...Ch. 34 - A microwave source produces pulses of 20.0GHz...Ch. 34 - The intensity of solar radiation at the top of the...Ch. 34 - Prob. 34.62APCh. 34 - Consider a small, spherical particle of radius r...Ch. 34 - Consider a small, spherical particle of radius r...Ch. 34 - A dish antenna having a diameter of 20.0 m...Ch. 34 - The Earth reflects approximately 38.0% of the...Ch. 34 - Review. A 1.00-m-diameter circular mirror focuses...Ch. 34 - Prob. 34.68APCh. 34 - Prob. 34.69APCh. 34 - You may wish to review Sections 16.4 and 16.8 on...Ch. 34 - Prob. 34.71APCh. 34 - Prob. 34.72APCh. 34 - Prob. 34.73APCh. 34 - Prob. 34.74APCh. 34 - Prob. 34.75APCh. 34 - Prob. 34.76CPCh. 34 - A linearly polarized microwave of wavelength 1.50...Ch. 34 - Prob. 34.78CPCh. 34 - Prob. 34.79CP
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