In a Universe with Ω=1, without the presence of dark energy, the expansion of the Universe would a. remain constant over time b. slow down over time c. reverse and then collapse d. speed up 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.…
Q: if you know that the life time of particle is 100*10-6 s. 1- what its life time if its moves by…
A: Life time of particle normally is, t=100 x 10-6 s Speed of the particle moving at, v=0.96c Where c…
Q: Which of the following is the best description of the cosmic microwave background radiation?
A: ANS: D. ancient blackbody radiation from the extremely hot and dense conditions of the early…
Q: Which of the following events in the early universe likely came first? a. Formation of the…
A: Answer: (b) Big Bang Nucleosynthesis
Q: ccording to modern science, the age of the universe is about a. 6,000 years b. 14…
A: Question asked : Age of the universe, according to the modern science
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…
Q: In the context of the Big Bang theory, cosmic inflation refers to: A. A rapid expansion of the…
A: The big bang is the focal point of the most convincing theory explaining the origin of our…
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: 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: What was the most startling discovery about the universe that occurred in 1998? O its expansion is…
A:
Q: 27. A person in a spaceship passing Earth observes her own heart rate to be 75 beats / minute and…
A:
Q: Which of the following is true of the cosmic microwave background radiation as we observe it today?…
A: Given:
Q: Which of the following is true? Group of answer choices 1. The grandfather paradox is a paradox…
A: The grandfather paradox is a logical problem involving time travel to the past. Assuming one can…
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…
Q: Explain why the speed of light is the maximum attainable
A: Hi , please find the answer
Q: One of the Weasley twins (Fred) takes a ride in a space ship traveling at a very high speed to a…
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?
Q: We believe that the big bang occurred 13.8 billion years ago. Give 3 reasons why scientists believe…
A: There are several lines of evidence that support the idea that the universe is 13.8 billion years…
Q: The period during the early Universe in which the first atomic nuclei (not full atoms) formed is…
A: Answer: (d) Big Bang Nucleosynthesis
Q: What is the name of the period in the Early Universe during which the Universe expanded very rapidly…
A: Few of the fundamental characteristics of the cosmos like its flatness and uniformity can be well…
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- If 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)Multiple choicePlease list 4 different forms of energy present in the universe?
- 35. 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.QUESTION 10 What curvature will the universe have if the matter and energy density of the universe is equal to the critical density? Open Closed Flat O None of the above QUESTION 11 Why can you not observe beyond the horizon distance? O Because of opaque gas O Because our telescopes are not powerful enough O Because light/information cannot travel faster than the speed of light O Because of the of black holes QUESTION 12 According to the Olber's Paradox, the night sky should be completely bright. However, when we observe at night, the sky is dark. Why does this happen? O Because the universe has a finite age O Because as the universe expands, objects at larger distances move faster, and the light from them shifts out of the visible part of the electromagnetic spectrum O Both a) and b) O Neither a) nor b)
- Is it possible in principle for a human being who has a life expectancy of 70 years to make a round-trip journey to a part of the universe thousands of light-years distant? Explain.Which 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 ConstructibilityWhich of the following can be concluded from the two premises below: 1. Whatever begins to exist has a cause 2. The universe began to exist some 14 billion years ago a. the universe must have a cause b. nothing c. the universe caused itself d. there must be a multiverse