What is the difference between hot dark matter and cold dark matter? What difference does that make to cosmology?
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: Describe the expanding universe theory (Big Bang Theory) based on observed astronomical evidence…
A: According to the Big Bang Theory, the universe is expanding from the state having high temperature…
Q: Which factor has slowed down the expansion of the universe?
A: The expansion of the universe has slowed down because the object pull each other towards themselves…
Q: A vertical rectangular gate 3m wide and 1.75m high has water on one side with surface of liquid 3m…
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Q: List other discoveries that support the big bang theory and are consistent with Hubble's discovery.
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Q: What was the maximum age of the universe predicted by Hubble's first estimate of the Hubble…
A: Hubble’s time: It is defined as follows, Here H is the Hubble’s constant which has unit km/s/Mpc…
Q: What is dark matter, and what evidence exists for it? What effect does dark energy have on the…
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Q: Is there any difference between antimatter, dark-matter, dark energy and degenerate matter?
A: Antimatter: It is like a simple matter. It also reflects the light. For example, positron is the…
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: What is a mass difference, and how does it arise?
A: To explain: Mass difference.
Q: What are the possible fates for the universe? What do they depend on? What appears to be the actual…
A: In cosmology, the possible fates of the universe are broadly categorized into several scenarios…
Q: Calculate the critical density of our universe.
A: Our universe is expanding and critical density is defined as the average density of matter that is…
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: Briefly explain the degenerate matter.
A: Given:Briefly explain the degenerate matter.Now,Degenerate matter refers to states of matter…
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: Suppose that we were to discover that all galaxies are actually twice as far away as we think. How…
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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: 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 does the size difference of the irregularities in the background radiation tell us about the…
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Q: Is the universe open or closed?
A: the universe as "closed," "open," or "flat," meant that the density of the universe was either so…
Q: How black holes made us?
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Q: When do cosmologists think the universe began?
A: We have fundamental forces in nature. They are gravitational, electromagnetic, weak and strong…
Q: If most galaxies are moving away from us, are we at the center of the universe? Why or why not?
A: Introduction: The universe encompasses everything in existence, from the smallest atom to the…
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: 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: What is the point of view on the topic of parallel universes and black holes? Using a predominant…
A: The exploration of parallel universes and black holes has captivated the human imagination for…
Q: What evidence can you cite that the expansion of the universe is accelerating?
A: It is observed that galaxies are moving away from Earth at speeds proportional to their distance.…
Q: What is meant by the critical density of the universe? Why is this quantity important to…
A: The critical density is the average density of matter necessary for the Universe's expansion to come…
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: Why do we believe there is dark matter? b) What important discoveries were made early in the 20th…
A: Dark matter is a hypothesized kind of stuff that is considered to make up around 85% of all matter…
Q: Does it make sense to ask, “If the universe is expanding, what is it expanding into?”
A: To explain the correct answer for the given question is as follows,
Q: What is the order of objects to form from first to last after the Big Bang nuclei,neutral Atoms,…
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Q: The discovery of the dark energy was a surprise because astrophysicists generally assumed that the…
A: Conclusion of the Hubble's Law:The conclusion of the Hubble's law is that the universe is…
Q: What does it mean that energy in the universe is “conserved” ?
A: solution is given as
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