What is a thought experiment? Why was it conducted and what was the result?

Q: Sketch a caricature or diagram of the situation or phenomenon showing that Hubble’s Law strongly…

A: Hubble's law is mathematically given by, v = H0 * d Where,v is the galactic velocity, H0 is the…

Q: The cosmic microwave background consists of: huge clouds of dark matter interspersed with equally…

A: Cosmic microwave background also known relic radiation. Cosmic microwave background is kind of…

Q: Due to length contraction, you see people in a spaceship passing by you as being slightly narrower…

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Q: Complete the following nuclear reactions and identify the cosmic phase (Big Bang Nucleosynthesis,…

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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 a mass difference, and how does it arise?

A: To explain: Mass difference.

Q: How can a change in strangeness imply which force is responsible for a reaction?

A: The changes in the flavor/type of the strange quark to the down or up quark(s→u or s→d) cause the…

Q: A sphere of matter and a sphere of antimatter (both at rest) can annihilate releasing 0.6· 1030 MeV…

A: Let mass of each sphere be m the total energy  released when annihilated, E=0.6 x 1030 MeV = 0.6 x…

Q: Do binary stars (double-star systems that orbit about a common center of mass) radiate gravitational…

A: Binary stars are the system of double star which orbit around a common center of mass.

Q: How would you explain spacetime to an unschooled person?

A: The solution is highly intricate, yet time and space are intimately connected. Because it takes time…

Q: what does the paradox entail in reality

A: In this question we have to explain the paradox entail in reality. Please give positive feedback if…

Q: Why electrons cannot be accelerated in a cyclotron?

A: Cyclotron work son the principle that a charged particle moving to a magnetic field experiences…

Q: Suppose the Hubble constant were not 22 but 53 km/s per million light-years. Then what would the…

A: Given: New Hubble constant, H' = 53 km/s per million light-years

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: Who won the Nobel Prize for discovering the cosmic background radiation?   a. Penzias and Wilson…

A: About discovering of cosmic background radiation .

Q: what are feynmens diagrams in semiclassical physics?

A: SOlution: to describe about Fynmens diagram

Q: Why the gravitational force is so important on the cosmic scale?

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Q: If a proton and an antiproton, both at rest, were to completely annihilate each other, how much…

A: Answer - 3 x 10-10 J

Q: What is the most difficult challenge the lhc encountered? How does the lhc discover new particle

A: CHALLENGES encountered by the LHC ; Design challenges In a circular accelerator dipole, magnets…

Q: Assume the average density of the universe is 0.1 of the critical density needed for closure. What…

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Q: At what speed would a 100 meter long spaceship appear to be 60 meters long?

A: Answer :-  let initial length be lo then req length = 0.6 lo let speed be = v

Q: What is Hawking radiation ?

A: It is named after the great scientist Stephen Hawking. He combined quantum physics and the general…

Q: My Dyson vacuum cleaner can achieve a pressure as low as 10−8 Pa at 25C. How many molecules are…

A: The number of molecules is calculated by using the formula PV=NkBT , where P=10-8 Pa is the pressure…

Q: How do we know the whole universe is expanding?

A: Given:-             The expansion of the universe is shows by Hubble by twentieth century was the…

Q: uppose a spaceship has the mass of a typical ocean cruise ship, then it can be assumed that it has a…

A: Given values, mass of the cruise ship(m) =3.1×108 kgkinetic energy of speed of light=13%light of…

Q: Describe the Galilean Relativity?

A: Introduction: According to the Galilean Relativity, if Newton's laws are true in any frame of…

Q: Explain how and why Hubble’s observations showed that the universe is expanding?

A: According to Hubble's observation, the light from the galaxies farther away is shifted to longer…

Q: Explain the meaning of half-life.

A: Explaining the meaning of half-life.

Q: What year did John von Neumann receive his degree in physics?

A: Introduction : Jhon von Neumann was a physicist, Mathematician and Computer Scientist.He was known…

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.