Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Chapter 14.1, Problem 3aT
Use trigonometry to show that the path length difference between the two scattered beams shown is equal to
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Two radio antennas separated by d = 275 m simultaneously broadcast identical signals at the same wavelength. A car travels due north along a straight line at position x = 548 m from the center point between the antennas, and its radio receives the signals. If the car is at the position of the 3rd maximum after that at point O when it has traveled a distance y = 403 m northward, what is the wavelength of the signals? Note: Do not use the small-angle approximation in this problem.
To continue enter the result in m.
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Frank 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.
Consider one of the curves as shown. Suppose the intensity of the incident light is held fixed but its frequency is increased. Does the stopping potential as shown (a) remain fixed, (b) move to the right, or (c) move to the left?
Chapter 14 Solutions
Tutorials in Introductory Physics
Ch. 14.1 - In the magnified view of the slits, an arrow is...Ch. 14.1 - For what values of the path length difference...Ch. 14.1 - Suppose that a single change were made to the...Ch. 14.1 - Prob. 2aTCh. 14.1 - Prob. 2bTCh. 14.1 - Prob. 2cTCh. 14.1 - Use trigonometry to show that the path length...Ch. 14.1 - Prob. 3bTCh. 14.2 - How does the voltmeter reading compare to the...Ch. 14.2 - Prob. 1bT
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