ESSENTIAL COSMIC PERSPECTIVE - ACCESS CA
9th Edition
ISBN: 9780135795125
Author: Bennett
Publisher: PEARSON
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Chapter 1, Problem 49EAP
To determine
To Explain: The way the total number of stars in the observable universe would be affected if 1 trillion small galaxies are considered instead of 100 billion large galaxies.
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Students have asked these similar questions
I answer is not 100, I also tried 21. I need help! Thank you!
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
1. A distant galaxy has an apparent magnitude of 10 and is 4,000 kpc away. What is its absolute magnitude? (Round your answer to at least one decimal place.)
The difference in absolute magnitude between two objects viewed from the same distance is related to their fluxes by the flux-magnitude relation.
FA/FB= 2.51(MB − MA)
2. How does the absolute magnitude of this galaxy compare to the Milky Way
(M = −21)?
Chapter 1 Solutions
ESSENTIAL COSMIC PERSPECTIVE - ACCESS CA
Ch. 1 - Prob. 1VSCCh. 1 - Prob. 2VSCCh. 1 - About how far away from Earth would the Sun be...Ch. 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 - Prob. 10EAPCh. 1 - Prob. 11EAPCh. 1 - Prob. 12EAPCh. 1 - Prob. 13EAPCh. 1 - Prob. 14EAPCh. 1 - Decide whether the statement makes sense (or is...Ch. 1 - Prob. 16EAPCh. 1 - Prob. 17EAPCh. 1 - Prob. 18EAPCh. 1 - Decide whether the statement makes sense (or is...Ch. 1 - Prob. 20EAPCh. 1 - Decide whether the statement makes sense (or is...Ch. 1 - Prob. 22EAPCh. 1 - Prob. 23EAPCh. 1 - An astronomical unit is (a) any planet’s average...Ch. 1 - The star Betelgeuse s about 600 light-years away....Ch. 1 - Prob. 26EAPCh. 1 - Prob. 27EAPCh. 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 m science...Ch. 1 - Prob. 36EAPCh. 1 - A Human Adventure. Astronomical discoveries...Ch. 1 - Prob. 38EAPCh. 1 - Group Activity: Counting the Milky Way’s Stars....Ch. 1 - Prob. 40EAPCh. 1 - Prob. 41EAPCh. 1 - Prob. 42EAPCh. 1 - Prob. 43EAPCh. 1 - Prob. 44EAPCh. 1 - Moonlight and Sunlight. How long does it take...Ch. 1 - Prob. 46EAPCh. 1 - Driving Trips. Imagine that you could drive your...Ch. 1 - Prob. 48EAPCh. 1 - Prob. 49EAPCh. 1 - Age of the Universe. Suppose we did not yet know...
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