17) In an accelerating Universe, the scale factor a) grows at an ever-decreasing rate over time. b) grows at a constant rate over time. c) remains constant over time. d) shrinks over time. e) grows at an ever-increasing rate over time.
Q: Gravitational lensing can be used to detect which component of the Universe? a. Dark Matter.…
A: Answer: (A) Dark Matter
Q: 7) The equation E = mc² illustrates that a) energy can be converted into mass d) Matter can be…
A: The equivalence between the energy and the matter can be given as, E=mc2 Here, m denotes the mass…
Q: Briefly explain the state of the universe from the time t=0 s to t= 104³ s after the Big Bang.
A: The Big Bang model is the most successful theory that explains the creation of the universe.…
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A:
Q: Special relativity describes how motion affects all of the following EXCEPT A) distance B) gravity…
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Q: Which of the following is the best description of the cosmic microwave background radiation?
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Q: how far light would travel in a week on the “cosmic calendar”?
A: To find : How far does the light travel in 1 week of cosmic calender
Q: Define special relativity and give an example
A: Special relativity is a theory of physics developed by Albert Einstein in 1905. It describes the…
Q: What is meant by proper time and proper length?
A: Define Proper time and proper length.
Q: Hi, can you give a detailed explanation on special relativity using cars as an example. (Using…
A: Step 1: Special Relativity Explained Using CarsSpecial relativity, introduced by Albert Einstein in…
Q: 23. General relativity * is a theory of gravity which is equivalent to Newton's gravitational model,…
A: the correct option is (c) : is a theory of gravity which states that gravity is not a force.
Q: 27. A person in a spaceship passing Earth observes her own heart rate to be 75 beats / minute and…
A:
Q: TRUE OR FALSE: Einstein correctly predicted that the universe is both infinite in size and static in…
A: Given: Einstein correctly predicted that the universe is both infinite in size and static in motion.
Q: Which statement below does not fit the model of the big bang and the subsequent changes in the…
A:
Q: ne cosmic "dark ages" represent that time in the history of the universe hen:
A: The question can be solved as follows
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Q: 17) In an accelerating Universe, the scale factor a. grows at an ever-decreasing rate over time. b.…
A: The scaling factor, represented by a(t), tells us to what extent our universe has expanded. Now if…
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A: According to twin paradox theory, one twin moves at speed of light and hence his frame of reference…
Q: What are the postulates for the Special Theory of Relativity?
A: What are the postulates for the Special Theory of Relativity?
Q: Explain why the speed of light is the maximum attainable
A: Hi , please find the answer
Q: 4) The cosmic calendar of Section 1.2 explains where we are in the universe in time. But time and…
A: Let the speed of light = c To find : the distance traveled by the light in 1 wek of cosmic calender…
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A:
Q: Which of the following represents the notion that our observable Universe may be a part of a much…
A: To find which represent the notion that our observable universe may be part of much larger whole?
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Solved in 2 steps
- 1) We believe that the big bang occurred 13.8 billion years ago. Give 3 reasons why scientists believe the universe is this old.If you are in a spaceship, traveling at 90% the speed of light, how much time will pass for you? A: 4.3 years B 8.7 years C: 20 years D: None at allIf the Sun was shrunk to fit the same mass into a smaller volume what would happen to the curvature of spacetime near the surface of the Sun? Spacetime curvature wouldn't change as the mass hasn't changed. Spacetime curvature would stay the same (which we would feel as the same gravity at the surface) Spacetime curvature would increase (which we would feel as an increase in gravity near the surface) Spacetime curvature would decrease (which we would feel as a decrease in gravity near the surface)
- From earth a spaceship traveling at a velocity close to the speed of light will appear to be: a) shorter than the size of a spaceship traveling at non-relativistic speeds. b) the same size as a spaceship traveling at non-relativistic speeds. c) longer than the size of a spaceship traveling at non-relativistic speeds. d) all of the above35. Redshift of light from quasar with a “z” value of 3.3 , we are observing quasar as it was_______. 11.7 Billion years ago. 13.2 Billion years ago. 3.3 Billion years ago. 8.2 Billion years ago.Scientists claim that empty space has an undetectable form of energy known as “dark energy.” This theory is needed to explain wich of the following? * A) The galaxies in the universe are getting brighter. B) The universe is heating up. C) The universe is expanding at an increasing speed. D) The stars and planets in the universe are getting louder.
- Just answer question 4 pleaseWhy is dark energy required to explain the universe as we see it today according to the Big Bang model of the universe? 9Which axiom of set theory is used to define the constructible universe L? A. Axiom of Infinity B. Axiom of Power Set C. Axiom of Choice D. Axiom of Constructibility