Choose the appropriate wavelengths of light in nanometers. Note that answers may be used multiple times or not at all. O What is the shortest wavelength of light that our eyes usually can see? 100 What wavelength of light is too long to be visible to the human eye? 280 9 What is the longest wavelength of light that our eyes usually can see? 315 400 t Answer Tries 0/2 550

Choose the appropriate wavelengths of light in nanometers. Note that answers may be used multiple times or not at all. O What is the shortest wavelength of light that our eyes usually can see? 100 What wavelength of light is too long to be visible to the human eye? 280 9 What is the longest wavelength of light that our eyes usually can see? 315 400 t Answer Tries 0/2 550

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter16: Fundamentals Of Light

Section: Chapter Questions

Problem 9STP

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Two radio antennas separated by d = 3.00 102 cm. as shown in Figure P24.7, simultaneously broadcast identical signals at the same the signals. (a) If the car is at the position of the second maximum wavelength. A car travels due north along a straight line at position x = 1.00 103 m from the center point between the antennas and its radio receives the signal. (a) If the car is at the position of the second maximum after that at point O when it has traveled a distance of y = 4.00 102 m northward, what is the wavelength of the signals? (b) How much farther must the car travel from thus position to encounter the next minimum in reception? Hint: Do not use the small-angle approximation in this problem.
Two radio antennas separated by d = 3.00 102 cm. as shown in Figure P24.7, simultaneously broadcast identical signals at the same the signals. (a) If the car is at the position of the second maximum wavelength. A car travels due north along a straight line at position x = 1.00 103 m from the center point between the antennas and its radio receives the signal. (a) If the car is at the position of the second maximum after that at point O when it has traveled a distance of y = 4.00 102 m northward, what is the wavelength of the signals? (b) How much farther must the car travel from thus position to encounter the next minimum in reception? Hint: Do not use the small-angle approximation in this problem.
Two radio antennas separated by d = 300 m as shown in Figure P27.3 simultaneously broadcast identical signals at the same wavelength. A car travels due north along a straight line at position x = 1 000 m from the center point between the antennas, and its radio receives the signals. (a) If the car is at the position of the second maximum after that at point O when it has traveled a distance y = 400 m northward, what is the wavelength of the signals? (b) How much farther must the car travel from this position to encounter the next minimum in reception? Note: Do not use the small-angle approximation in this problem.
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1. An LED emit light waves whose wavelenghs is 490nm. What is the frequency for this light? (ans: 6.12x1014Hz) 2. A radio station has broadast at 107.5 MHz. What is the wavelengh of the radio waves that are produced? (ans 2.79m) 3. For cellphone 4G LTE operates at a frequency 1.90 GHz. What is the corresponding wavelengh the cellphone operates on? (15.8 cm) Show Work
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