Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Chapter 4, Problem 15QAP
To determine
The effect of change in wavelength on frequency.
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A radio transmitter broadcast at a frequency of 119 kHz. what is the wavelength of the wave? (Speed of light in vacuum is 3•10^8)
(a) The distance to a star is approximately 6.74 ✕ 1018 m. If this star were to burn out today, in how many years would we see it disappear? ___ years(b) How long does it take sunlight to reach Earth? ____ minutes(c) How long does it take for a microwave radar signal to travel from Earth to the Moon and back? (The distance from Earth to the Moon is 3.84 ✕ 105 km.)______ s
Determine the frequency of red visible light (λ = 650 nm) (GIVEN: 1 m = 10⁹ nm)
Answer:
Tip: To enter scientific notation, use "e".
Examples:
21000 is 2.1×104. It would be entered as 2.1e4
0.000093 is 9.3x105. It would be entered as 9.3e-5
Hz
Chapter 4 Solutions
Understanding Our Universe
Ch. 4.1 - Prob. 4.1CYUCh. 4.2 - Prob. 4.2CYUCh. 4.3 - Prob. 4.3CYUCh. 4 - Prob. 1QAPCh. 4 - Prob. 2QAPCh. 4 - Prob. 3QAPCh. 4 - Prob. 4QAPCh. 4 - Prob. 5QAPCh. 4 - Prob. 6QAPCh. 4 - Prob. 7QAP
Ch. 4 - Prob. 8QAPCh. 4 - Prob. 9QAPCh. 4 - Prob. 10QAPCh. 4 - Prob. 11QAPCh. 4 - Prob. 12QAPCh. 4 - Prob. 13QAPCh. 4 - Prob. 14QAPCh. 4 - Prob. 15QAPCh. 4 - Prob. 16QAPCh. 4 - Prob. 17QAPCh. 4 - Prob. 18QAPCh. 4 - Prob. 19QAPCh. 4 - Prob. 20QAPCh. 4 - Prob. 21QAPCh. 4 - Prob. 22QAPCh. 4 - Prob. 23QAPCh. 4 - Prob. 24QAPCh. 4 - Prob. 25QAPCh. 4 - Prob. 26QAPCh. 4 - Prob. 27QAPCh. 4 - Prob. 28QAPCh. 4 - Prob. 29QAPCh. 4 - Prob. 30QAPCh. 4 - Prob. 31QAPCh. 4 - Prob. 32QAPCh. 4 - Prob. 33QAPCh. 4 - Prob. 34QAPCh. 4 - Prob. 35QAPCh. 4 - Prob. 36QAPCh. 4 - Prob. 37QAPCh. 4 - Prob. 38QAPCh. 4 - Prob. 39QAPCh. 4 - Prob. 40QAPCh. 4 - Prob. 41QAPCh. 4 - Prob. 42QAPCh. 4 - Prob. 43QAPCh. 4 - Prob. 44QAPCh. 4 - Prob. 45QAP
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- 1) What is the wavelength for an FM radio signal that has a frequency of 107.8 MHz? (speed of light, is 3.00*10^ 1 m/s )arrow_forwardwhat is the frequency of a light of wavelength 7.4 x 10^-7 m?arrow_forwardIf the frequency of an EM wave is doubled and the speed remains constant, its wavelength is ____. quartered. halved. unchanged. doubled. quadrupled. As a light wave travels into a medium in which its speed decreases, its wavelength would ____. increase decrease remain the same If the frequency of an EM wave is doubled and the speed remains constant, its wavelength is ____. quartered. halved. unchanged. doubled. quadrupled. Correct answers are noted but I'm confused why?arrow_forward
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- Which of the following is a TRUE statement about light? O Red light travels slower than ultraviolet light. O The energy of light increases with its wavelength. Infrared light has a longer wavelength that ultraviolet light. Light of all frequencies has the same energy. O The energy of light decreases as its frequency increases.arrow_forwardWhat is the wavelength of radiation with a frequency of 4.3 x 10^14 s-1? In what region of the electromagnetic spectrum is this radiation? If the region is in the visible light spectrum, what color is this?arrow_forwardAM 100m Electromagnetic Spectrum FM TV Radio waves 1m Radar 1cm TV Remote Infrared 0.01cm Light Bulb 1000nm O Lightning has more energy than the radio because gamma rays have a longer wavelength. Ⓒ Lightning has less energy than the radio because gamma rays have a shorter wavelength. O Lightning has more energy than the radio because gamma rays have a shorter wavelength. O Lightning has less energy than the radio because gamma rays have a longer wavelength. Sun Ultraviolet 10nm X-ray machine X-rays Building Size Lightning contains gamma rays. Based on the position of gamma rays in the electromagnetic spectrum, does lightning have more or less energy than a radio? Radioctive Elements wwwwwwwwww Gamma rays VISIBLE SPECTRUM 0.01nm 0.0001nm Atom Sizearrow_forward
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