The Cosmic Perspective (9th Edition)
9th Edition
ISBN: 9780134874364
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 1, Problem 43EAP
To determine
To Write: About Hubble eXtreme Deep Field.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Black Hole Accretion Disk.
Part A: If the inner accretion disk around a black hole has a temperature of 1,000,000 K, at what wavelength will it radiate the most energy? Express your answer in units of nm.
Part B: What part of the spectrum is this in?
As we discussed, clouds are made of a great many small drops. Really - a great many. Imagine a
liquid cloud that fills a volume of 1 km3. The clouds contains 100 drops per cubic centimeter; for
the sake of argument assume that each is 10 microns (micrometers) in radius.
A. How many drops does the cloud contain? Compare this to a big number - say, the number of
stars in the galaxy.
B. What mass of water does the cloud contain? Compare this to something big - elephants,
trucks, that sort of thing.
C. What fraction of the cloud volume is filled with condensed water? One way to approach this
is to compare the density of the suspended liquid water to the density of the surrounding air.
D. How many 1 mm drizzle drops could you make from all the cloud drops?
E. How much energy was released when this water condensed from vapor to liquid? If the
water condensed in 20 minutes (a reasonable lifetime for a small cloud), what was the
(energy per time)?
power
Planetary Nebula Age.
Suppose a planetary nebula is 1 pc in radius. If the Doppler shifts in its spectrum show it is expanding at 20 km/s, how old is it? (Note that 1 pc equals 3.1x1013 km, and 1 year equals 3.2x107 seconds, to two significant figures.)
Please round your answer to two significant digits.
At =
years
Chapter 1 Solutions
The Cosmic Perspective (9th Edition)
Ch. 1 - Prob. 1VSCCh. 1 - Prob. 2VSCCh. 1 - Prob. 3VSCCh. 1 - Prob. 4VSCCh. 1 - Prob. 1EAPCh. 1 - Define astronomical unit and light-year.Ch. 1 - Explain the statement “The farther away we look in...Ch. 1 - Prob. 4EAPCh. 1 - Prob. 5EAPCh. 1 - What do we mean when we say that the universe is...
Ch. 1 - In what sense are we “star stuff”?Ch. 1 - Use the cosmic calendar to describe how the human...Ch. 1 - Briefly explain Earth’s daily rotation and annual...Ch. 1 - Briefly describe our solar system’s location and...Ch. 1 - Prob. 11EAPCh. 1 - Prob. 12EAPCh. 1 - Prob. 13EAPCh. 1 - Does it Make Sense? Decide whether the statement...Ch. 1 - Prob. 15EAPCh. 1 - Prob. 16EAPCh. 1 - Prob. 17EAPCh. 1 - Prob. 18EAPCh. 1 - Prob. 19EAPCh. 1 - Prob. 20EAPCh. 1 - Prob. 21EAPCh. 1 - Prob. 22EAPCh. 1 - Which of the following correctly lists our ‘cosmic...Ch. 1 - An astronomical unit is (a) any planet’s average...Ch. 1 - The star Betelgeuse is about 600 light-years away....Ch. 1 - Prob. 26EAPCh. 1 - The total number of stars in the observable...Ch. 1 - Prob. 28EAPCh. 1 - Prob. 29EAPCh. 1 - Prob. 30EAPCh. 1 - Prob. 31EAPCh. 1 - Prob. 32EAPCh. 1 - Prob. 34EAPCh. 1 - Thinking About Scale. One key to success in...Ch. 1 - Prob. 36EAPCh. 1 - A Human Adventure. Astronomical discoveries...Ch. 1 - Prob. 38EAPCh. 1 - Prob. 39EAPCh. 1 - Prob. 40EAPCh. 1 - Prob. 41EAPCh. 1 - Prob. 42EAPCh. 1 - Prob. 43EAPCh. 1 - Prob. 44EAPCh. 1 - Prob. 45EAPCh. 1 - Spacecraft Communication. We use radio waves,...Ch. 1 - Prob. 47EAPCh. 1 - Prob. 48EAPCh. 1 - Prob. 49EAPCh. 1 - Driving Trips. Imagine that you could drive your...Ch. 1 - Faster Trip. Suppose you wanted to reach Alpha...Ch. 1 - Prob. 52EAPCh. 1 - Earth Rotation Speed. Mathematical Insight 1.3...Ch. 1 - Order of Magnitude Estimate. Mathematical Insight...
Knowledge Booster
Learn more about
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
- Can someone help with this?arrow_forward5. A star whose temperature is 8000 K has a peak wavelength of 362.5 nm, according to Wien's Law. If the star is in the Andromeda Galaxy, which is moving towards us at about 402,000 km/hour, what would an observer on Earth see as the peak wavelength for this star (show your work, and use c = 300,000 km/s)?arrow_forwardDefine the term power law, in terms of mathematics and physics. Then give at least three examples of power laws that exist in physics. Additionally, define the terms scale invariance and universality. Give at least two examples of universality in physics.arrow_forward
- The figure below shows the spectra of two galaxies A and B.arrow_forwardPlease answer the question and its subquestions entirely! This is one question with two subquestions. According to the official Bartleby guidelines, I am alowed to have up to two subquestion! 1) Astronauts orbiting the earth in the space shuttle experience a force of gravity that is several times greater than the Fgrav experienced on Earth's surface. several times smaller than the Fgrav experienced on Earth's surface. a fraction greater than the Fgrav experienced on Earth's surface. a fraction smaller than the Fgrav experienced on Earth's surface . ... nonsense! Orbiting astronauts do not experience any gravitational pull from the earth. a) A space shuttle is in orbit about the earth at an altitude where the acceleration due to gravity is 8.70 m/s 2. What is the shuttle's speed at this altitude? 2.65 × 10 3 m/s 7.45 × 10 3 m/s 7.68 × 10 3 m/s 7.91 × 10 3 m/s b) A 9 × 10 3 kg satellite with an…arrow_forwardWhat is a Worm Hole? How can we travel into the Worm Hole?arrow_forward
- 2. A galaxy cluster has a galaxy behind it whose image we see as being smeared out and curved, with an angular radius of curvature on the sky of θE. The background galaxy is at redshift zgal and the cluster is at zclust. What is the mass of the cluster in solar masses? Give your response in scientific notation with one decimal place. (The Hubble constant is of course 70 km/s/Mpc, and you can assume the Hubble law for these low redshifts). Values: zgal = 0.11 zclust = 0.07 θE = 117.4 arcsecondsarrow_forward1. If a star has a surface temperature of 3000 K but a luminosity 150 times greater than our Sun, what size is this star? Give your answer in units of the solar radius. 2. At what wavelengths do stars of surface temperates 20 000 K, 10 000 K, and 3000 K have their peak intensity? 3. If the Hα absorption line in the spectrum of a galaxy is observed at a wavelength of 6715 ˚A, at what speed is the galaxy moving away from us?arrow_forwardStuck on homework, especially the significant part. If the value of the Hubble constant is 70 kilometers per second per Mpc, then what is the Hubble time – that is, the amount of time the universe has been expanding since the Big Bang? Give your answer first in units of seconds, and then in units of billions of years. Your answer is significant to two digits.arrow_forward
- Cosmic Microwave Background 8. The Cosmic Microwave Background (CMB) acts as a perfect black body whose energy spectrum(energy density per unit volume per unit frequency) is given by the expression : (image attached)arrow_forwardBased on what you know about observations of the interstellar medium at wavelengths other than for visible light, select all of the correct statements from the following list. -The 21-cm radio observations are of neutral hydrogen. -Much interstellar dust between stars is not visible. -The source of hot gas observed at X-ray wavelengths is not known. -All interstellar material is cool. -Interstellar dust is observed at ultraviolet wavelengths. -Giant molecular clouds consist mostly of CO molecules. -Material observed at wavelengths longer than that of visible light is usually cool.arrow_forwardA molecular cloud is about 1000 times denser than the average of the interstellar medium. Let’s compare this difference in densities to something more familiar. Air has a density of about 1 kg/m3, so something 1000 times denser than air would have a density of about 1000 kg/m3. How does this compare to the typical density of water? Of granite? (You can find figures for these densities on the internet.) Is the density difference between a molecular cloud and the interstellar medium larger or smaller than the density difference between air and water or granite?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- AstronomyPhysicsISBN:9781938168284Author:Andrew Fraknoi; David Morrison; Sidney C. WolffPublisher:OpenStaxFoundations of Astronomy (MindTap Course List)PhysicsISBN:9781337399920Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning
- Stars and Galaxies (MindTap Course List)PhysicsISBN:9781337399944Author:Michael A. SeedsPublisher:Cengage LearningHorizons: Exploring the Universe (MindTap Course ...PhysicsISBN:9781305960961Author:Michael A. Seeds, Dana BackmanPublisher:Cengage Learning
Astronomy
Physics
ISBN:9781938168284
Author:Andrew Fraknoi; David Morrison; Sidney C. Wolff
Publisher:OpenStax
Foundations of Astronomy (MindTap Course List)
Physics
ISBN:9781337399920
Author:Michael A. Seeds, Dana Backman
Publisher:Cengage Learning
Stars and Galaxies (MindTap Course List)
Physics
ISBN:9781337399944
Author:Michael A. Seeds
Publisher:Cengage Learning
Horizons: Exploring the Universe (MindTap Course ...
Physics
ISBN:9781305960961
Author:Michael A. Seeds, Dana Backman
Publisher:Cengage Learning