What is meant by the critical density of the universe? Why is this quantity important to cosmologists
Q: What is the evidence that dark matter exists?
A:
Q: What do you mean by leptons?
A: Leptons are subatomic particles that have half spin. They respond to the gravitational force, weak…
Q: Cite an evidence that we are living in an expanding universe.
A: The universe we are living in is expanding. This is evident from Hubble's observations in 1929. A…
Q: I'm having trouble understanding this. Suppose we have a spaceship about the size of a typical…
A: The mass of the ship is M = 130 million kilograms = 1.3×108 kg The required velocity is 12 % of the…
Q: How did the invention of the Large Hadron Collider affected the world society and economy?
A: In physics, a collider is a type of particle accelerator that is used to study the properties of…
Q: What are the three important pieces of evidence that led scientists to accept the Big Bang as the…
A: The Big Bang model is one of the many theories that were developed to explain the birth of the…
Q: Write each of the following complex numbers in the exponential form. (a) 2 cos- +i cos 3 3 을 (b) 5,…
A: a) The given equation is of the Polar form z=r(cosθ+isinθ) Therefore, r= 2 θ= π/3 We know that,…
Q: What is your reflection about the big bang theory?
A: Big bang theory assumes that universe was a dense point initially. And then it started to expand…
Q: Why is dark matter a problem?
A: Without dark matter stars would escape their galaxies and galaxy clusters would come unbound.…
Q: Is antimatter, dark matter, dark energy, and degenerate matter all t
A: Antimatter, dark matter ,dark energy and degenerate matter are not all the same thin. Antimatter:…
Q: List other discoveries that support the big bang theory and are consistent with Hubble's discovery.
A:
Q: What was the maximum age of the universe predicted by Hubble's first estimate of the Hubble…
A: The age of the universe is given by Where Ho = Hubble constant
Q: What is the role of symmetry in fundamental physics? Provide examples of symmetry principles in…
A: Symmetry plays a fundamental role in physics as it helps to simplify complex problems and provides a…
Q: I'm doing a debate about Kalam cosmological. I need to have an example of something out of nothing…
A: Answer:- Atomic physics, Nuclear Physics, Relativistic Physics , Quantum physics, Thermodynamic and…
Q: How does string theory attempt to unify quantum mechanics and general relativity?
A: String theory attempt to unify Quantum mechanics and general relativity
Q: According to the cosmological principle, our place in the universe does not appear to be…
A: According to the cosmological principle, our place in the universe does not appear to be…
Q: How might you relate the big bang to yourself as a physical entity? What elemental parts of your…
A: After Big Bang their is a very fast expansion of universe. In that state the energy and matter is…
Q: How can physics help us gain a greater understanding of the interconnected ness of everything in the…
A: The ness interconnection of the universe can be understand with the help of physics. The physics…
Q: Question A7 Consider the following line element, ds² = - dt² + a² (t) (da² + dy²) + b² (t) dz²,…
A: The objective of the question is to determine whether the given line element obeys the Cosmological…
Q: Does the law of conservation of mass conflict with a famous theory such as the theory of expansion…
A: First of all we will have to know that alone mass is not conserved and alone energy is not…
Q: What happened before the Big Bang?
A: The Answer is given below:
Q: a) b) c) Define the term "standard candle" as used in cosmology. The flux is defined as L 47 Dium…
A: a) Define the term "standard candle" as used in cosmology.In astronomy, a standard candle is a…
Q: Where did all the antimatter go?
A: Anti-particle came into light in the 20th century when famous physicist Paul Dirac was trying to…
Q: When do cosmologists think the universe began?
A: We have fundamental forces in nature. They are gravitational, electromagnetic, weak and strong…
Q: What are your thoughts on the hypothesis of the big bang?
A: It is required to discuss the big bang theory.
Q: According to the version of the Big Bang Theory without a Cosmological Constant (and without Dark…
A: Hubble's Law states that as the universe is expanding in all directions, the receding velocity of an…
Q: Why the gravitational force is so important on the cosmic scale?
A:
Q: Why can't we see past the cosmological horizon? O The universe extends only to this horizon. O…
A: We can't see past the cosmological horizon because the only things that we saw on the night sky is…
Q: What do the results from the Wilkinson Microwave Anisotropy Probe (WMAP) observations tell…
A: The Wilkinson Microwave Anisotropy Probe, also called Microwave Anisotropy Probe.
Q: How does the Hubble constant relate to the age of the universe?
A: Hubble constant is defined as the proportionality constant between velocity of galaxies far from us…
Q: If you find that the Hubble constant is double what we currently believe, how does this affect the…
A: Q) If you find that the Hubble constant is double what we currently believe, how does this affect…
Q: Summarize The Big Bang Theory and its evidence
A: Humans have been always keen on knowing how the universe came into existence. For this, they…
Q: If the current mass of the universe consists of 75% protons and 25% 4He, what is the current ratio…
A: Given: Universe consists of 75% protons and 25% 4He.
Q: Where did the atoms that were the cause of the big bang originate from?
A: As the universe cooled, conditions became just right to give rise to the building blocks of matter –…
Q: What is a super force?
A: Super force is defined as a single force of which electromagnetism, the weak force, the strong…
Q: Was the Big Bang an explosion? Explain your answer.
A: the Big Bang wasn't an explosion that destroyed things.
Q: Does Hubble's Law work well for galaxies in the Local Group (such as Andromeda)?
A: Hubble law states that the velocity of the galaxies which are moving away also known as the…
Q: At what temperature is the thermal radiation in the universe energetic enough to produce nucleons…
A: We have to find the temperature at which the thermal radiation in the universe will be energetic…
What is meant by the critical density of the universe? Why is this quantity important to cosmologists?
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