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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Question
Chapter 4, Problem 7QAP
To determine
The spectrum at which hot light emits light.
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If you see a red-hot star, you can be certain that its peak intensity is in the infrared region. Why is this?
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II. infrared
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IV. ultraviolet
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b. I and IV only
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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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- Why is it difficult to observe at infrared wavelengths? What do astronomers do to address this difficulty?arrow_forwardhumans can typically see light in the range of 400 to 700 nm. however, some animals can see wavelengths outside of this range. for instance bees and some spiders can see ultraviolet light, while snakes and other reptiles have vision extending to the infrared wavelengths. what adaptive advantages might this extended vision offer these animalsarrow_forwardList the following regions of the electromagnetic spectrum in order of increasing energy from lowest to highest. A) InfraredB) VisibleC) RadioD) X-RayE) Ultravioletarrow_forward
- If the speed of light is 3×108 meters/second and the wavelength of an infrared wave used in a remote control is 7×10−9 meters, then what is its frequency? A. 4×1016 Hz B. 4×10−2 Hz C. 2×100 Hz D. 2×10−17 Hzarrow_forwardwhy the reflection are important for radio transmission.arrow_forwardList the following regions of the electromagnetic spectrum in order of increasing frequency from lowest to highest. A) X-RayB) VisibleC) InfraredD) RadioE) Ultravioletarrow_forward
- Within the range of the electromagnetic spectrum visible to the human eye, which of the has the highest frequency: Ultraviolet light Infrared light Red light Violet lightarrow_forwardultraviolet radiation becomes more dangerous as the wavelength decreases. the ultraviolet radiation with the smallest wavelength is uvc radiation and it can break chemical bonds and produce permenant damage to dna. at its most dangerous uvc radiation has a wavelength of 1.0 x 10^-7 and a frequency of 3.0 x 10^15 hz. whats the velocity of the radiation at its most dangerousarrow_forwardWhich of the following are characteristic of ultraviolet radiation from a star? a. It will not penetrate Earth’s atmosphere and reach the ground. b. It has a wavelength that is longer than the visible light emitted by the star. c. It has a wavelength that is shorter than the X rays emitted by the star. d. a and b e. b and carrow_forward
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