Universe: Stars And Galaxies
6th Edition
ISBN: 9781319115098
Author: Roger Freedman, Robert Geller, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 26, Problem 4Q
To determine
The reason for non-violation of the statement,“Inflationary model does not oppose the principle that the speed of the light in vacuum represents its ultimate speed limit”.
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Explain why the speed of light is the maximum attainable speed in the universe ?
Define special relativity and give an example.
Shown here is the Hawking equation that describes radiation from black holes:
2hG
Where:
S- entropy (J/K)
A- area of the event horizon (m2)
k-Boltzman's constant (m² kg/s² K)
|
c- speed of light
h- Planck's constant (m2 kg/s)
G- universal gravitation constant (m³/kg s²)
a) Using the equation and units of the other terms, find the units for c.
%3D
b) In this system of units, c = 2.99 x 10%. Convert this to miles/hour.
Chapter 26 Solutions
Universe: Stars And Galaxies
Ch. 26 - Prob. 1QCh. 26 - Prob. 2QCh. 26 - Prob. 3QCh. 26 - Prob. 4QCh. 26 - Prob. 5QCh. 26 - Prob. 6QCh. 26 - Prob. 7QCh. 26 - Prob. 8QCh. 26 - Prob. 9QCh. 26 - Prob. 10Q
Ch. 26 - Prob. 11QCh. 26 - Prob. 12QCh. 26 - Prob. 13QCh. 26 - Prob. 14QCh. 26 - Prob. 15QCh. 26 - Prob. 16QCh. 26 - Prob. 17QCh. 26 - Prob. 18QCh. 26 - Prob. 19QCh. 26 - Prob. 20QCh. 26 - Prob. 21QCh. 26 - Prob. 22QCh. 26 - Prob. 23QCh. 26 - Prob. 24QCh. 26 - Prob. 25QCh. 26 - Prob. 26QCh. 26 - Prob. 27QCh. 26 - Prob. 28QCh. 26 - Prob. 29QCh. 26 - Prob. 30QCh. 26 - Prob. 31QCh. 26 - Prob. 32QCh. 26 - Prob. 33QCh. 26 - Prob. 34QCh. 26 - Prob. 35QCh. 26 - Prob. 36QCh. 26 - Prob. 37QCh. 26 - Prob. 38QCh. 26 - Prob. 39QCh. 26 - Prob. 40QCh. 26 - Prob. 41QCh. 26 - Prob. 42QCh. 26 - Prob. 43QCh. 26 - Prob. 44QCh. 26 - Prob. 45QCh. 26 - Prob. 46QCh. 26 - Prob. 47Q
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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. Value: n = 4*1080arrow_forwardThe Big Bang Theory is currently the most widely-accepted explanation for the origin of the Universe. As technology has emerged, new data has been collected to allow for a clearer understanding of how the Universe is changing and the possible things that might happen to it in the future. Which of the following is not a question that can be answered using scientific processes? >What was the cause of the Big Bang? >What is the type of energy emitted by celestial objects?>What is the rate at which the universe appears to be expanding? >What are the chemical elements that exist in the other parts of the galaxy?arrow_forward. The temperature of background radiation left over from the Big Bang during the creation of the universe is 3 K. What is the temperature of the universe a) in °C? b) in °F?arrow_forward
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