Physical Science (12th Edition), Standalone Book
12th Edition
ISBN: 9781260150544
Author: Bill W. Tillery
Publisher: McGraw Hill Education
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Chapter 14, Problem 6PEA
To determine
The expected lifetime of a star.
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Let us imagine that the spectrum of a star is collected and we find the absorption line of Hydrogen-Alpha (the deepest absorption line of hydrogen in the visible part of the electromagnetic spectrum) to be observed at 656.5 nm instead of 656.3 nm as measured in a lab here on Earth. What is the velocity of this star in m/s? (Hint: speed of light is 3*10^8 m/s; leave the units off of your answer)
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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- A star has a period of P = 37 days. It has a radius of 5.7 times the radius of the sun. Calculate it's equatorial speed Vrot. Answer: Okm/s Om/s Check A star has a radius of 5.7 times the radius of the sun and a mass of 18 times the mass of the sun. It rotates at 0.7 of the critical speed W, the speed at which it's surface at the equator is actually in orbit. Recall Vrot is calculated at the equator and W= Vrot/Vorb Calculate it's period P. Answer: Odays Ohours Oseconds Checkarrow_forwardConsider two stars on the main sequence, A and B. Star A has a mass of 6 M⊙. Star B has a mass of 0.3 M⊙. Compute the ratio of main sequence lifetimes for the two stars, TB/TA .arrow_forwardMost stars (Main sequence) generate light through the same mechanism. Because of this, there is an empirical relation between their mass, M, and their Luminosity, L. This relation could be written in the form L/Lsun = (M/Msun, This relation is shown in the log-log diagram below. Find the value of a and round it to the nearest integer. 10 104 102 10-2 10-4 0.1 1.0 2.0 0.2 0.5 5.0 10.0 20.0 Mam (solar masses) Luminosty (solar units)arrow_forward
- An object must be at least 0.08 solar masses to be a star. Using a ratio, compare the lifetime of such a star to that of the Sunarrow_forwardUsing solar units, we find that a star has 4 times the luminosity of the Sun, a mass 1.25 times the mass of the Sun, and a surface temperature of 4090 K (take the Sun's surface temperature to be 5784 K for the sake of this problem). This means the star has a radius of.................... solar radii and is a .................... star (use the classification).arrow_forwardCalculate the lifetime of a 15 MSun star. Answer: ___ yearsarrow_forward
- (a) The figure shows the three stars and their velocities. Which star has the largest proper motion? Which star has the smallest proper motion? A B Eartharrow_forwardUsing the center-of-mass equations or the Center of Mass Calculator (under Binary-Star Basics, above), you will investigate a specific binary-star system. Assume that Star 1 has m₁ = 3.4 solar masses, Star 2 has m₂ = 1.4 solar masses, and the total separation of the two (R) is 52 AU. (One AU is Earth's average distance from the Sun.) (a)What is the distance, d₁, (in AU) from Star 1 to the center of mass? AU (b)What is the distance, d2, (in AU) from Star 2 to the center of mass? AUarrow_forwardWhat is the lifetime on the main sequence of a star whose surface temperature is 6500° K and whose radius is 2 X 109 m ? ( LS=3.826 X 1026 J/s)arrow_forward
- Using the center-of-mass equations or the Center of Mass Calculator (under Binary-Star Basics, above), you will investigate a specific binary-star system. Assume that Star 1 has m1 = 3.2 solar masses, Star 2 has m2 = 1.6 solar masses, and the total separation of the two (R) is 80 AU. (One AU is Earth's average distance from the Sun.) (a) What is the distance, d1, (in AU) from Star 1 to the center of mass?arrow_forward12: A star with spectral type A0 has a surface temperature of 9600 K and a radius of 2.2 RSun. How many times more luminous is this star than the Sun? (if it is less luminous enter a number less than one) Answer: 36.854 13:This star has a mass of 3.3 MSun. what is the main sequence lifetime of this star? You may assume that the lifetime of the sun is 1010 yr. Please answer question 13 thank you.arrow_forwardSuppose a star has a luminosity of 7.0x1026 watts and an apparent brightness of 4.0x10-12 watt/m?. How far away is it? Give your answer in both kilometers and light-years.arrow_forward
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