Universe: Stars And Galaxies
6th Edition
ISBN: 9781319115098
Author: Roger Freedman, Robert Geller, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 5, Problem 51Q
To determine
The reason for ultraviolet rays causing skin cancer to human skin whereas, the visible light do not have any effect on it.
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Chapter 5 Solutions
Universe: Stars And Galaxies
Ch. 5 - Prob. 1QCh. 5 - Prob. 2QCh. 5 - Prob. 3QCh. 5 - Prob. 4QCh. 5 - Prob. 5QCh. 5 - Prob. 6QCh. 5 - Prob. 7QCh. 5 - Prob. 8QCh. 5 - Prob. 9QCh. 5 - Prob. 10Q
Ch. 5 - Prob. 11QCh. 5 - Prob. 12QCh. 5 - Prob. 13QCh. 5 - Prob. 14QCh. 5 - Prob. 15QCh. 5 - Prob. 16QCh. 5 - Prob. 17QCh. 5 - Prob. 18QCh. 5 - Prob. 19QCh. 5 - Prob. 20QCh. 5 - Prob. 21QCh. 5 - Prob. 22QCh. 5 - Prob. 23QCh. 5 - Prob. 24QCh. 5 - Prob. 25QCh. 5 - Prob. 26QCh. 5 - Prob. 27QCh. 5 - Prob. 28QCh. 5 - Prob. 29QCh. 5 - Prob. 30QCh. 5 - Prob. 31QCh. 5 - Prob. 32QCh. 5 - Prob. 33QCh. 5 - Prob. 34QCh. 5 - Prob. 35QCh. 5 - Prob. 36QCh. 5 - Prob. 37QCh. 5 - Prob. 38QCh. 5 - Prob. 39QCh. 5 - Prob. 40QCh. 5 - Prob. 41QCh. 5 - Prob. 42QCh. 5 - Prob. 43QCh. 5 - Prob. 44QCh. 5 - Prob. 45QCh. 5 - Prob. 46QCh. 5 - Prob. 47QCh. 5 - Prob. 48QCh. 5 - Prob. 49QCh. 5 - Prob. 50QCh. 5 - Prob. 51Q
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- Ultraviolet (UV) radiation is a part of the electromagnetic spectrum that reaches the Earth from the Sun. It has wave-lengths shorter than those of visible light, making it invisible to the naked eye. These wavelengths are classified as UVA, UVB, or UVC, with UVA the longest of the three at 320 nm to 400 nm. Both the U.S. Department of Health and Human Services and the World Health Organization have identified UV as a proven human carcinogen. Many experts believe that, especially for fair-skinned people, UV radiation frequently plays a key role in melanoma, the deadliest form of skin cancer, which kills more than 8000 Americans each year. UVB has a wave-length between 280 nm and 320 nm. Determine the frequency ranges of UVA and UVB.arrow_forwardWhy do you suppose ultraviolet rays from the sun are more damaging to the skin than visible light?arrow_forwardFor years, exposure to ultra-violet radiation from prolonged time in the sun has been the major identified cause of skin cancer. New research is showing that ultra-violet is not the only type of radiation from the sun that can increase the risk of skin cancer. Rates of skin cancer among pilots are twice that of non-pilots, but the glass used in planes blocks most the ultra-violet radiation. Pilots are also exposed to x-rays from the sun during flight. The x-rays that pilots are exposed to in one day of work are equivalent to a chest x-ray. Although getting an x-ray for medical reasons is believed to be safe, researchers believe that the frequent exposer that pilots experience increases their risk for skin cancer. The Electromagnetic Spectrum IMHE IGHE Fregiency r 10 10 10 1e 10 10" 10 10 10" Camme wened Wwwdengih in 10 10 10 1 10 10 10 10 o* 10* 10 10 10 19" 1e 10 1o Ikm Imm Tum Inm Ipm Use your knowledge of the electromagnetic spectrum to support the claim that pilots are at a greater…arrow_forward
- Why do farmers use Infrared lights and UV lights?arrow_forwardTanning salons use “safe” UV with a longer wavelength than some of the UV in sunlight. This “safe” UV has enough photon energy to trigger the tanning mechanism. Is it likely to be able to cause cell damage and induce cancer with prolonged exposure?arrow_forwardEstimate how many photons per second will your eye detect from a 5th magnitude star seen through a filter that transmits light between 5000 and 6000 angstroms (roughly the V band)? Assume that your eye pupil has a diameter of 5 mm.arrow_forward
- Based on your answer in Question 7, when light with a wavelength of 198 nm strikes the surface of tin metal, electrons are ejected with a maximum kinetic energy of 2.9 x 10-19 J. What is the binding energy of these electrons to the metal? A 1.2 x 10-18 ) B 1.0 x 10-18 J С) 7.1 х 10-19] 1.98 x 10-7Jarrow_forwardWhat is the energy in joules of a photon in a radio wave from an AM station that has a 1530-kHz broadcast frequency? Answer Units: [10-¹⁹ J]arrow_forwardMost remote controllers for AV equipment emit radiation with the wavelength profile shown in the figure below. What is the energy of a photon that has a wavelength corresponding to the peak in the figure?Planck's constant is h = 6.626 ×× 10–34 J • s, and the speed of light is c = 3.00 × 108 m/s. Answer in KJarrow_forward
- If the average temperature of the surface of the Sun is roughly 5780 Kelvin, the radiation emitted from the Sun should peak in the electromagnetic spectrum. part of the « < Question 26 of 32 » A Moving to another question will save this response. O 10:05 hp %23 24 & backspa %D 9. 4. 6. 1 2 { r y W e k S d f b C 2Narrow_forwardSuppose that the microwave radiation has a wavelength of 11.6 cm. How many photons are required to heat 265 mL of coffee from 25.0 degrees Celcius to 62.0 degrees Celcius? Assume that the coffee has the same density, 0.997 g/mL, and specific heat capacity, 4.184 J/(g.K), as water over this temperature range.arrow_forwardOrdinary glass is transparent to visible light but largely opaque to ultravioletradiation. Why?arrow_forward
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