Connect Access Card for Integrated Science
7th Edition
ISBN: 9781259350412
Author: Bill W Tillery, Eldon Enger, Frederick C Ross
Publisher: McGraw-Hill Education
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Question
Chapter 12, Problem 1PEB
To determine
The distance between Sirius A and Earth in kilometers.
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One of the stars nearest Earth is Proxima Centauri, which is 4.2 light years away. One of the brightest starts viewed from Earth is Sirius A, which is 8.6 light years away. How many more light years from Earth is Sirius A than Proxima Centauri?
The Balmer lines are strongest in which class of star?
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A star is known to be moving at 7.87km/s toward the earth. If you observe the spectral line to be at 9.63nm, at what wavelength would you expect to measure the spectral line in a lab?
Please give your answer in nanometers and include 3 digits.
Chapter 12 Solutions
Connect Access Card for Integrated Science
Ch. 12.1 - Stars twinkle and planets do not twinkle because...Ch. 12.6 - Prob. 2SCCh. 12.6 - Prob. 3SCCh. 12.6 - Prob. 4SCCh. 12.6 - Prob. 5SCCh. 12.6 - Prob. 6SCCh. 12.6 - Prob. 7SCCh. 12.6 - Prob. 8SCCh. 12.7 - Prob. 9SCCh. 12.7 - Prob. 10SC
Ch. 12.7 - Prob. 11SCCh. 12.7 - Prob. 12SCCh. 12 - What is a light-year, and how is it defined?Ch. 12 - Prob. 2CQCh. 12 - Prob. 3CQCh. 12 - What is the Hertzsprung-Russell diagram?Ch. 12 - Prob. 5CQCh. 12 - Prob. 6CQCh. 12 - Prob. 7CQCh. 12 - Prob. 8CQCh. 12 - Prob. 9CQCh. 12 - Prob. 10CQCh. 12 - Prob. 11CQCh. 12 - Prob. 12CQCh. 12 - Prob. 13CQCh. 12 - Prob. 14CQCh. 12 - Prob. 15CQCh. 12 - Prob. 16CQCh. 12 - Prob. 17CQCh. 12 - Prob. 18CQCh. 12 - Prob. 19CQCh. 12 - Prob. 20CQCh. 12 - Prob. 21CQCh. 12 - Prob. 22CQCh. 12 - Analyze when apparent magnitude is a better scale...Ch. 12 - Prob. 24CQCh. 12 - Prob. 25CQCh. 12 - Prob. 1PEACh. 12 - Prob. 2PEACh. 12 - Prob. 3PEACh. 12 - Prob. 4PEACh. 12 - Prob. 5PEACh. 12 - Prob. 6PEACh. 12 - Prob. 7PEACh. 12 - Prob. 8PEACh. 12 - Prob. 9PEACh. 12 - Prob. 10PEACh. 12 - Prob. 11PEACh. 12 - Prob. 1PEBCh. 12 - Prob. 2PEBCh. 12 - Prob. 3PEBCh. 12 - Prob. 4PEBCh. 12 - Prob. 5PEBCh. 12 - Prob. 6PEBCh. 12 - Prob. 7PEBCh. 12 - Prob. 8PEBCh. 12 - Prob. 9PEBCh. 12 - Prob. 10PEBCh. 12 - Prob. 11PEB
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- The star Sirius A has an apparent magnitude of 1.5 . Sirius A has a dim companion, Sirius B, which is 10,000 times less bright than Sirius A. What is the apparent magnitude of Sirius B? Can Sirius B be seen with the naked eye?arrow_forwardNow calculate the radius of Sirius’ white dwarf companion, Sirius B, to the Sun.arrow_forwardA nearby star has a parallax of 0.317 arcseconds. How long does it take the light from this star to reach us?arrow_forward
- The luminosity of a star is 6.6 x 1031 W and the peak wavelength in its spectrum is 4.6 x 10-7 m. Calculate the surface area of that star. Round off the answer to 2 decimal places with scientific representation.arrow_forwardThe two stars Sirius A and Sirius B orbit their commoncenter of mass. Sirius A has a mass of 4.12 × 1030kg andSirius B has a mass of 2.04 × 1030kg. Assuming theyeach have circular orbits and they stay 2.99 × 1012mapart, what is the radius of the orbit of Sirius A?arrow_forwardStar B is located 2.6 times farther from earth than Star A, but both have the same apparent visual magnitude of 1 mag. Which star is intrinsically brighter?How many times brighter is the star?arrow_forward
- If two stars are in a binary system with a combined mass of 5.5 solar masses and an orbital period of 12 years, what is the average distance between the two stars?arrow_forwardIf the star Sirius emits 23 times more energy than the Sun, why does the Sun appear brighter in the sky?arrow_forwardDescribe the spectrum of each of the following: A. starlight reflected by dust, B. a star behind invisible interstellar gas, and C. an emission nebula.arrow_forward
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