An Introduction to Physical Science
14th Edition
ISBN: 9781305079137
Author: James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres
Publisher: Cengage Learning
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Question
Chapter 18, Problem 11E
(a)
To determine
The age of the universe if Hubble’s constant had a value of
100 km/s/Mpc
.
(b)
To determine
The age of the universe if Hubble’s constant had a value of
50 km/s/Mpc
.
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Assume the observable Universe is charge neutral, and that it contains n nuclei (hydrogen plus helium nuclei, ignoring other elements). Take the helium mass fraction as 1/4. How many electrons are there in the observable Universe? Enter your answer in scientific notation with one decimal place.
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Chapter 18 Solutions
An Introduction to Physical Science
Ch. 18.1 - How is the position of a star designated in the...Ch. 18.1 - Prob. 2PQCh. 18.1 - Prob. 18.1CECh. 18.2 - Prob. 1PQCh. 18.2 - Prob. 2PQCh. 18.3 - Prob. 1PQCh. 18.3 - Prob. 2PQCh. 18.4 - Prob. 1PQCh. 18.4 - Prob. 2PQCh. 18.5 - Prob. 1PQ
Ch. 18.5 - Prob. 2PQCh. 18.6 - Prob. 1PQCh. 18.6 - Prob. 2PQCh. 18.7 - Prob. 1PQCh. 18.7 - Prob. 2PQCh. 18.7 - Prob. 18.2CECh. 18 - Prob. AMCh. 18 - Prob. BMCh. 18 - Prob. CMCh. 18 - Prob. DMCh. 18 - Prob. EMCh. 18 - Prob. FMCh. 18 - Prob. GMCh. 18 - Prob. HMCh. 18 - Prob. IMCh. 18 - Prob. JMCh. 18 - Prob. KMCh. 18 - Prob. LMCh. 18 - Prob. MMCh. 18 - Prob. NMCh. 18 - Prob. OMCh. 18 - Prob. PMCh. 18 - Prob. QMCh. 18 - Prob. RMCh. 18 - Prob. SMCh. 18 - Prob. TMCh. 18 - Prob. UMCh. 18 - Prob. VMCh. 18 - Prob. WMCh. 18 - Prob. XMCh. 18 - Prob. YMCh. 18 - Prob. ZMCh. 18 - Prob. AAMCh. 18 - What is the point on the celestial sphere...Ch. 18 - Prob. 2MCCh. 18 - Prob. 3MCCh. 18 - Prob. 4MCCh. 18 - Prob. 5MCCh. 18 - Prob. 6MCCh. 18 - Prob. 7MCCh. 18 - What force keeps the all stars from flying apart?...Ch. 18 - Prob. 9MCCh. 18 - Prob. 10MCCh. 18 - Prob. 11MCCh. 18 - Prob. 12MCCh. 18 - Prob. 13MCCh. 18 - Prob. 14MCCh. 18 - Prob. 15MCCh. 18 - Prob. 16MCCh. 18 - Prob. 17MCCh. 18 - Prob. 18MCCh. 18 - Prob. 19MCCh. 18 - Prob. 20MCCh. 18 - The apparent change of the position of a star due...Ch. 18 - Prob. 2FIBCh. 18 - Prob. 3FIBCh. 18 - Prob. 4FIBCh. 18 - Prob. 5FIBCh. 18 - Prob. 6FIBCh. 18 - Prob. 7FIBCh. 18 - Prob. 8FIBCh. 18 - Prob. 9FIBCh. 18 - Prob. 10FIBCh. 18 - Prob. 11FIBCh. 18 - Prob. 12FIBCh. 18 - Prob. 13FIBCh. 18 - Prob. 14FIBCh. 18 - Prob. 15FIBCh. 18 - Prob. 16FIBCh. 18 - Prob. 17FIBCh. 18 - Prob. 18FIBCh. 18 - Prob. 19FIBCh. 18 - Prob. 20FIBCh. 18 - Prob. 1SACh. 18 - Prob. 2SACh. 18 - Prob. 3SACh. 18 - What is the vernal equinox, and what does it have...Ch. 18 - Prob. 5SACh. 18 - Prob. 6SACh. 18 - Prob. 7SACh. 18 - Prob. 8SACh. 18 - Prob. 9SACh. 18 - Prob. 10SACh. 18 - Prob. 11SACh. 18 - Prob. 12SACh. 18 - Prob. 13SACh. 18 - Prob. 14SACh. 18 - Prob. 15SACh. 18 - Prob. 16SACh. 18 - Prob. 17SACh. 18 - Prob. 18SACh. 18 - Prob. 19SACh. 18 - Prob. 20SACh. 18 - Prob. 21SACh. 18 - Prob. 22SACh. 18 - Prob. 23SACh. 18 - Prob. 24SACh. 18 - Prob. 25SACh. 18 - Prob. 26SACh. 18 - Prob. 27SACh. 18 - Prob. 28SACh. 18 - Prob. 29SACh. 18 - Prob. 30SACh. 18 - Prob. 31SACh. 18 - Prob. 32SACh. 18 - Prob. 33SACh. 18 - Prob. 34SACh. 18 - Prob. 35SACh. 18 - Prob. 36SACh. 18 - Prob. 37SACh. 18 - Prob. 38SACh. 18 - Prob. 39SACh. 18 - State three experimental findings that support the...Ch. 18 - Prob. 41SACh. 18 - Prob. 42SACh. 18 - Prob. 1VCCh. 18 - Prob. 1AYKCh. 18 - Prob. 2AYKCh. 18 - Prob. 3AYKCh. 18 - If you went outside on a clear night to locate...Ch. 18 - Prob. 5AYKCh. 18 - Prob. 6AYKCh. 18 - What major factor determines the future of the...Ch. 18 - Find the distance in parsecs to the star Altair,...Ch. 18 - The bright star Sirius has a parallax angle of...Ch. 18 - Calculate the number of seconds in a year (365...Ch. 18 - Prob. 4ECh. 18 - Prob. 5ECh. 18 - Prob. 6ECh. 18 - Prob. 7ECh. 18 - Prob. 8ECh. 18 - Prob. 9ECh. 18 - Prob. 10ECh. 18 - Prob. 11ECh. 18 - If Hubbles constant had a value of 75 km/s/Mpc,...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Assume the observable Universe is charge neutral, and that it contains n nuclei (hydrogen plus helium nuclei, ignoring other elements). Take the helium mass fraction as 1/4. How many electrons are there in the observable Universe? Enter your answer in scientific notation with one decimal place. Value: n = 4*1080arrow_forwardSuppose we find an Earth-like planet around one of our nearest stellar neighbors, Alpha Centauri (located only 4.4 light-years away). If we launched a "generation ship" at a constant speed of 1500.00 km/s from Earth with a group of people whose descendants will explore and colonize this planet, how many years before the generation ship reached Alpha Centauri? (Note there are 9.46 ××1012 km in a light-year and 31.6 million seconds in a year.arrow_forwardAstronomers frequently say that “there are more stars in the universe than there are grains of sand on all the beaches on the earth”. Given that a typical grain of sand is about 0.5 – 1.0 mm in diameter, estimate the number of grains of sand on all the earth’s beaches. The diameter of the Earth is 12,742 km. About 1011 About 1016 About 1021.arrow_forward
- What would be your estimate for the age of the universe if you measured Hubbleʹs constant to be 33 km/s/Mly? You can assume that the expansion rate has remained unchanged during the history of the universe.arrow_forwardCalculate the number of miles in a light-year, using 1.86 105 mi/s as the speed of light. (Hint: The number of seconds in a year, 365 days, will be useful.) Incorrect: Your answer is incorrect. mi/yarrow_forwardIf Jim could drive a Jetson's flying car at a constant speed of 330 km/hr across oceans and space, approximately how long (in millions of years, in 106 years) would he take to drive to a nearby star that is 8.7 light-years away? Use 9.461 × 1012 km/light-year and 8766 hours per year (365.25 days).arrow_forward
- The Sun is moving at 220 ??/? around the Galactic Center at a more-or-less constant distance of 8.5 ???. To appreciate how remarkable this is, consider the following questions: a) How massive would the Sun have to be for the Earth to have an orbital velocity of 220 km/s at 1 AU? b) How fast would the Earth move if it was in orbit around the Sun at a distance of 8.5 kpc? Of course, you may ignore the effects of all other stars in this calculation.arrow_forwardThe best parallaxes obtained with Hipparcos have an accuracy of 0.001 arcsec. If you want to measure the distance to a star with an accuracy of 10%, its parallax must be 10 times larger than the typical error. How far away can you obtain a distance that is accurate to 10% with Hipparcos data? The disk of our Galaxy is 100,000 light-years in diameter. What fraction of the diameter of the Galaxy’s disk is the distance for which we can measure accurate parallaxes?arrow_forwardCalculate the number of miles in a light-year, using 1.86 105 mi/s as the speed of light. (Hint: The number of seconds in a year, 365 days, will be useful.)arrow_forward
- Perhaps the most fundamental problem in all of astronomy is the determination of distance to the various objects in the cosmos. Which of the following seems least reasonable regarding the various measurement techniques: Group of answer choices The Hubble Law relates the recessional speed of distant objects (measured with the Doppler Effect) to distance. Hubble law is most useful for determining the distance to nearby objects, while parallax is most useful for the more distant objects. We can determine the position of a star on the H-R diagram through spectral analysis and then figure out the distance by comparing absolute luminosity (from H-R diagram) to apparent brightness. The distance to nearby stars can be determined by measuring parallax. The distance to the planets in our solar can be determined by measuring the time for a radar signal to reach a planet, bounce off, and return.arrow_forwardHow many times longer than the length of recorded history is the age of the universe? I was also given that the length of recorded history is 10E11 s, and that the age of the universe is 10E18 s. But, when putting 10E18/10E11 = 10E7, I get the wrong answer.arrow_forwardIf the Hubble's constant was 100 km/s/Mpc instead of 70 km/s/Mpc what would be the estimated age of the universe?arrow_forward
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