Physical Science (12th Edition), Standalone Book
12th Edition
ISBN: 9781260150544
Author: Bill W. Tillery
Publisher: McGraw Hill Education
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Question
Chapter 14, Problem 1PEB
To determine
The distance between Sirius and Earth in kilometers.
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The nearest star to our sun is Proxima Centauri, at a distance of 4.3 light-years from the Sun. A light-year is the distance that light travels in one year (365 days). How far away, in kilometers, is Proxima Centauri from the Sun?Express your answer using two significant figures.
Distance from
Apparent Brightness (rank;
brightest, 8 = dimmest)
Name of Star
Earth (light years) | 1 =
Sun
Sirius
8.6
Canopus
Arcturus
309
3.
36.7
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Vega
Alpha Centauri
Bernard's Star
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5
25.3
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8
13 What sentence explains why a star can be much farther from Earth than
the Sun, but still be bright?
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A. Distance from Earth and apparent brightness are related.
B. Bright stars that are farther away are larger than the Sun.
C. The higher it appears in the sky, the brighter the star.
D. The apparent brightness scale goes up as stars get dimmer.
del sdT
15: A star has a parallax angle of 0.0270 arcseconds and an apparent magnitude of 4.641. What is the distance to this star? Answer: 37
16: What is the absolute magnitude of this star? Answer:1.8
17: Is this star more or less luminous than the Sun? Answer "M" for More luminous or "L" for Less luminous. (HINT: the absolute magnitude of the Sun is 4.8) Answer: M
18: What is the luminosity of this star? (HINT: The luminosity of the Sun is 3.85×1026 W.)
Please answer question #18, #15-17 are correct, the photos provide the work for them.
Chapter 14 Solutions
Physical Science (12th Edition), Standalone Book
Ch. 14 -
1. A referent system that can be used to locate...Ch. 14 - Prob. 2ACCh. 14 - Prob. 3ACCh. 14 - Prob. 4ACCh. 14 - Prob. 5ACCh. 14 - Prob. 6ACCh. 14 - Prob. 7ACCh. 14 - Prob. 8ACCh. 14 - Prob. 9ACCh. 14 -
10. The lifetime of a star depends on...
Ch. 14 - Prob. 11ACCh. 14 - Prob. 12ACCh. 14 - Prob. 13ACCh. 14 - Prob. 14ACCh. 14 - Prob. 15ACCh. 14 - Prob. 16ACCh. 14 - Prob. 17ACCh. 14 - Prob. 18ACCh. 14 - Prob. 19ACCh. 14 -
20. Stars twinkle and planets do not twinkle...Ch. 14 -
21. How much of the celestial meridian can you...Ch. 14 - Prob. 22ACCh. 14 - Prob. 23ACCh. 14 - Prob. 24ACCh. 14 - Prob. 25ACCh. 14 - Prob. 26ACCh. 14 - Prob. 27ACCh. 14 - Prob. 28ACCh. 14 - Prob. 29ACCh. 14 - Prob. 30ACCh. 14 - Prob. 31ACCh. 14 - Prob. 32ACCh. 14 - Prob. 33ACCh. 14 - Prob. 34ACCh. 14 - Prob. 35ACCh. 14 - Prob. 36ACCh. 14 - Prob. 37ACCh. 14 - Prob. 38ACCh. 14 - Prob. 39ACCh. 14 - Prob. 40ACCh. 14 - Prob. 41ACCh. 14 - Prob. 42ACCh. 14 - Prob. 43ACCh. 14 - Prob. 44ACCh. 14 - Prob. 45ACCh. 14 -
46. Evidence that points to the existence of...Ch. 14 -
47. The name of our galaxy is the
a. solar...Ch. 14 - Prob. 48ACCh. 14 - Prob. 49ACCh. 14 - Prob. 50ACCh. 14 -
1. Would you ever observe the Sun to move along...Ch. 14 - Prob. 2QFTCh. 14 - Prob. 3QFTCh. 14 - Prob. 4QFTCh. 14 - Prob. 5QFTCh. 14 - Prob. 6QFTCh. 14 - Prob. 7QFTCh. 14 - Prob. 8QFTCh. 14 - Prob. 9QFTCh. 14 - Prob. 10QFTCh. 14 - Prob. 11QFTCh. 14 - Prob. 12QFTCh. 14 - Prob. 13QFTCh. 14 - Prob. 14QFTCh. 14 - Prob. 15QFTCh. 14 - Prob. 16QFTCh. 14 - Prob. 17QFTCh. 14 - Prob. 18QFTCh. 14 - Prob. 19QFTCh. 14 - Prob. 20QFTCh. 14 - Prob. 21QFTCh. 14 - Prob. 1FFACh. 14 - Prob. 2FFACh. 14 - Prob. 3FFACh. 14 -
4. What is the significance of the...Ch. 14 - Prob. 5FFACh. 14 - Prob. 1IICh. 14 - Prob. 1PEACh. 14 - Prob. 2PEACh. 14 - Prob. 3PEACh. 14 - Prob. 4PEACh. 14 - Prob. 5PEACh. 14 - Prob. 6PEACh. 14 - Prob. 7PEACh. 14 - Prob. 8PEACh. 14 - Prob. 9PEACh. 14 - Prob. 10PEACh. 14 - Prob. 11PEACh. 14 - Prob. 12PEACh. 14 - Prob. 13PEACh. 14 - Prob. 14PEACh. 14 - Prob. 15PEACh. 14 - Prob. 1PEBCh. 14 - Prob. 2PEBCh. 14 - Prob. 3PEBCh. 14 - Prob. 4PEBCh. 14 - Prob. 5PEBCh. 14 - Prob. 6PEBCh. 14 - Prob. 7PEBCh. 14 - Prob. 8PEBCh. 14 - Prob. 9PEBCh. 14 - Prob. 10PEBCh. 14 - Prob. 11PEBCh. 14 - Prob. 12PEBCh. 14 - Prob. 13PEBCh. 14 - Prob. 14PEBCh. 14 - Prob. 15PEB
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- Describe two ways of determining the diameter of a star.arrow_forwardThe star Sirius has an apparent magnitude of -1.46 and appears 95-times brighter compared tothe more distant star Tau Ceti, which has an absolute magnitude of 5.69.(a) Explain the terms apparent magnitude, absolute magnitude and bolometric magnitude.(b) Calculate the apparent magnitude of the star Tau Ceti.(c) Find the distance between the Earth and Tau Ceti.www.arrow_forwardIn the parallax method of determining stellar distances, the angle to a star is measured while the earth is on one side of the sun and then again six months later, as in the diagram below. Assume the earth-sun distance is 1 Astronomical Unit. The parallax angle of Alpha Centauri is 0= 2.1 x 10-4 ° . Find the distance from the sun to a Centauri in light years. Assume a circular orbit for the Earth. a Centauri Earth (June) Earth (December) Sunarrow_forward
- Earth is about 150 million kilometers from the Sun (1 Astronomical Unit, or AU), and the apparent brightness of the Sun in our sky is about 1300 watts/m^2. Using these two facts and the inverse square law for light, determine the apparent brightness that we would measure for the Sun if we were located at the following positions. b) At the orbit of Jupiter (780 million km from the Sun).arrow_forwardWhen we look at a particular star, we are seeing it as it was 371 years ago. How far away from us (in meters) is the star? Take a year to be 365.25 days.arrow_forwardEarth is about 150 million kilometers from the Sun (1 Astronomical Unit, or AU), and the apparent brightness of the Sun in our sky is about 1300 watts/m^2. Using these two facts and the inverse square law for light, determine the apparent brightness that we would measure for the Sun if we were located at the following positions. a) At the orbit of Venus (67 million km from the Sun). b) At the orbit of Jupiter (780 million km from the Sun). c) At the mean distance of Pluto (40 Astronomical Units).arrow_forward
- A star spans a parallax angle θ = 2 arcsecond when seen on Earth (6 months spans 2θ). Its distance is _____ light years from us.arrow_forwardQ8. Measured the parallax angle of the Sirius Yamaniya star, see Figure, and found 0.377 arcsec. Calculate the star's distance in the Astronomical parsec and in light year. Orion Sinus Canis Majorarrow_forwardThe Sun's angular diameter is measured to be 1920". The distance D of the Sun from the Earth is 1.496x1011 m. What is the diameter of the Sun?arrow_forward
- On Earth, the parallax angle measured for the star Procyon is 0.29 arcseconds. If you were to measure Procyon's parallax angle from Venus, what would the parallax angle be? (Note: Earth's orbital radius is larger than Venus's orbital radius.) A. more than 0.29 arcseconds B. 0.29 arcseconds C. less than 0.29 arcseconds D.zero arcseconds (no parallax)arrow_forwardEarth is about 150 million kilometers from the Sun, and the apparent brightness of the Sun in our sky is about 1300 watts/m2. Determine the apparent brightness that we would measure for the Sun if we were located 12 times Earth's distance from the Sun.arrow_forwardSuppose a star has a luminosity of 7.0x1026 watts and an apparent brightness of 4.0×10-12 watt/m?. How far away is it? Give your answer in both kilometers and light-years.arrow_forward
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