Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Chapter 5, Problem 9QAP
To determine
The factor that determines the direction of revolution in the plane of the solar system.
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Put these components from largest to smallest
1. comet
2. star
3. galaxy
4. nebula
5. planet
6. universe
The Messier Catalog is
a. a listing of all the stars within the Local Bubble
b. a list of all the HII listings visible without a telescope
c. a list of nebulae, star clusters, and galaxies that might be mistaken for a comet far from the sun
d. a list of regions where dark clouds large numbers of molecules can be found
Astronomers 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.
Chapter 5 Solutions
Understanding Our Universe
Ch. 5.1 - Prob. 5.1CYUCh. 5.2 - Prob. 5.2CYUCh. 5.3 - Prob. 5.3CYUCh. 5.4 - Prob. 5.4CYUCh. 5.5 - Prob. 5.5CYUCh. 5.6 - Prob. 5.6CYUCh. 5 - Prob. 1QAPCh. 5 - Prob. 2QAPCh. 5 - Prob. 3QAPCh. 5 - Prob. 4QAP
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- An astronomical unit (AU) is defined as the average distance between the solar system and Alpha Centauri the Earth and the Moon the Milky Way Galaxy and the Andromeda Galaxy the Earth and the Sunarrow_forwardA planet (in another galaxy) takes 5 000 Earth days to complete one full revolution around its own star (not the Sun). It is exactly as far away from its star as Earth is to its own Sun. Draw a FBD, then determine how many times more or less massive this star is than our sun (in other words, give a factor of mass, e.g “5x larger” or “5x smaller”)arrow_forwardRank these objects from oldest to youngest the Solar System, the Universe, the Milky Way Galaxy.arrow_forward
- What is the difference between the Solar System, the Galaxy, and the Universe?arrow_forwardNow, rank the same objects by increasing temperature. For spherical objects, use the surface temperature. Items in order by temperature Intercloud gas Interstellar cloud Molecular cloud 1 MSun protostar 1 MSun stararrow_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
- The Drake Equation is a tool for estimating ... A) the number of alien civilizations that have visited the Earth in the past B) the number of planets in the Milky Way that contain civilizations intelligent enough to communicate through space. C) the number of habitable planets in the Milky Way where life has developedarrow_forwardOur sun was born approximately 4.6 billion years ago. How many journeys around the centre of our galaxy has the sun made? 21 25 35 50arrow_forward5 terms listed below, You must include the term, a description of the term in your own words (to demonstrate your own understanding), an example related to the term in a picture/graphic that accurately the represent the term. 1. Universe 2. Light-year 3. Asteroids 4. Dwarf planet 5. Galaxy Please write it in your own words. And write in simple words and sentences so that I can understand it better. Please and thank you so much.arrow_forward
- Put these in order from smallest to largest Universe Galaxy Solar system Distance between earth and the sun Atoms Earth Sun Bacteria Person Moonarrow_forwardCompare the values of the number of grains of sand in all earth’s beaches with the number of stars in the universe – which is greater? Number of sand grains Number of stars They are about the same.arrow_forwardStars originate as large bodies of slowly rotating gas. Because of gravity, these clumps of gas slowly decrease in size. The angular velocity of a star increases as it shrinks because ofarrow_forward
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