The Big Bang depends on the geometry of the Universe to cause physical processes to occur...
The Big Bang depends on the geometry of the Universe to cause physical processes to occur at each stage of the Big Bang.
A. True
B. False
Homework Answers
The statement is FALSE. The big bang or expansion of the universe starting from a point essentially depends on the density of the universe. The gravitational attraction of matter in the universe slows down the expansion. If the matter is dense enough, the expansion will eventually reverse - gravity will win - and the universe will recollapse to a point. If it is not, the expansion will continue forever. Therefore the density of matter in the universe will decide what will happen.
The common confusion is that the density of the universe also decides the shape of the universe : flat, positively curved or negatively curved.
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The Big Bang depends on the geometry of the
Universe to cause physical processes to occur...
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Miniature black holes. Left over from the big-bang beginning of the universe, tiny black holes might...
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Evaluate the validity of the following statement: Spontaneous processes are ones that occur quickly and have...
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Part A: The horizontal axis of the graph measures the time since the Big Bang in seconds. The extreme left of the horizontal axis, where it meets the vertical axis, is labeled 10−45 seconds (that is...
Part A:
The horizontal axis of the graph measures the time since the Big
Bang in seconds. The extreme left of the horizontal axis, where it
meets the vertical axis, is labeled 10−45 seconds (that is a
decimal point followed by 44 zeroes and then a one). If we move
along two tick marks to the right on the horizontal axis,
it is labeled 10−35 seconds. By what factor does the time increase
from one tick mark on the horizontal...
Partial 0.44/0.5pts Question 1 Is each statement true or false? 1. false All spontaneous reactions occur...
Partial 0.44/0.5pts Question 1 Is each statement true or false? 1. false All spontaneous reactions occur quickly. 2. true The reverse of a spontaneous reaction is nonspontaneous. 3. false All spontaneous processes release heat. 4. true The boiling of water at 100°C and 1 atm is spontaneous. 5. false If a process increases the freedom of motion of the particles of a system, the entropy of the system decreases. 6. false The energy of the universe is constant; the entropy...
The "classic" Big Bang theory explains that the Universe was originally very hot and very dense and that this leads to some clear predictions that have been experimentally verified.However, there were some observed properties of the Universe that the classic Big Bang theory couldn't explain. Explaining these additional properties of the Universe required the development of the model of cosmic inflation in the 1980s, which has some additional predictions we are attempting to verify with experiments today. What properties of...
Within the first second after the Big Bang the universe was filled with high-energy, gamma-ray photons. These photons created huge numbers of elementary particles and their antiparticles through pair production. What happened to these particles? They are still here. They combined to create the first atoms and molecules that compose the physical universe. The particles are still with us as atoms and molecules, but almost all of the antiparticles disappeared. These particle-antiparticle pairs annihilated to produce more photons. This pair...
Chapter 13, Problem 005 Miniature black holes. Left over from the big-bang beginning of the universe, tiny black holes might still wander through the universe. If one with a mass of 2 x 1011 kg (and a radius of only 1 x 10-16 m) reached Earth, at what distance from your head would its gravitational pull on you match that of Earth's? Assume free-fall acceleration a=9.83 m/s2. Number Units The number of significant digits is set to 3; the tolerance...
Evaluate the validity of the following statement: Spontaneous processes are ones that occur quickly and have a low activation energy. A) False. Spontaneous processes always require an input of energy to overcome the activation energy, but always react quickly. B) False. Spontaneous processes can occur slowly, but always have a low activation energy. C) False. Spontaneous reactions can react slowly and can have a high activation energy. D) False. Spontaneous processes always react slowly and always have a high activation...
Part A:
The horizontal axis of the graph measures the time since the Big
Bang in seconds. The extreme left of the horizontal axis, where it
meets the vertical axis, is labeled 10−45 seconds (that is a
decimal point followed by 44 zeroes and then a one). If we move
along two tick marks to the right on the horizontal axis,
it is labeled 10−35 seconds. By what factor does the time increase
from one tick mark on the horizontal...
Partial 0.44/0.5pts Question 1 Is each statement true or false? 1. false All spontaneous reactions occur quickly. 2. true The reverse of a spontaneous reaction is nonspontaneous. 3. false All spontaneous processes release heat. 4. true The boiling of water at 100°C and 1 atm is spontaneous. 5. false If a process increases the freedom of motion of the particles of a system, the entropy of the system decreases. 6. false The energy of the universe is constant; the entropy...
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