Which of the following lists is the correct order of increasing velocity of light inside the mayerial( lowest velocity to highest velocity).

Q: Why is dark matter a problem?

A: Without dark matter stars would escape their galaxies and galaxy clusters would come unbound.…

Q: Match the definitions to the terms. Blueshift Redshift : When a star is moving toward Earth, the…

A: The redshift and blue shift phenomena are based on the doppler effect of light. The shifting in…

Q: Answer all the 5 questions with complete solutions please thank you so much, please if you’ll gonna…

A:

Q: Explain how the temperature of hot gas can be used to find out about the gravitational pull of a…

A: Given: The hot gas temperature which is used to find the gravitational pull To find: The explanation…

Q: Explain why Olbers’s paradox is not a paradox.

A: In the early history of astronomy, it was believed that the universe is static, infinite, uniform,…

Q: suppose there are three stars in space, each moving at 100 km/s. Star A is moving across9…

A: In this case, all the stars are moving away from the Earth. Therefore, we will observe the redshift.…

Q: Explain the term Gravitational lensing?

A: Gravitational lensing is the term that is used to describe the bending and distortion in the path of…

Q: What is dark current ? On what is it depends?

A: Required : What is dark current.

Q: What is the Doppler shift in the wavelength of Hα ( 656.1 nm ) line from a star which is moving away…

A:

Q: Dark energy

A: Dark Energy is a hypothetical form of energy that exerts a negative, repulsive pressure, behaving…

Q: Which galaxies are moving the fastest away from us?

A: Our nearest galaxy is Milky way.

Q: Explain the Continuum and it's properties?

A: Continuum definition and properties

Q: What is space wave propagation?

A: The space wave propagation is the propagation of the electromagnetic waves on the earth surface…

Q: For the picture below what is the differences of light spectra of different galaxies. compared to a…

A: The spectrum given here refers to the absorption spectrum. The distant stars and galaxies absorb the…

Q: Time period of rotation of a blackhole is 5.52 milliseconds. What is the frequency of rotation in SI…

A: Given data: Time period of rotation of a blackhole is, T=5.52 ms=5.52×10-3 s.

Q: Calculate, how fast you were going in meters per second when you ran the red light because it…

A:

Q: What is Stefan-Boltzmann constant? What is its value?

A: Stefan-Boltzmann law states that the total radiant heat energy emitted from a surface of the source…

Q: How does a gravitational red-shift differ from a Doppler red shift?

A:

Q: Explain, which factors will be resulted the shape of Brillouin zone (BZ) in k-space.

A: A Brillouin zone is the locus of all those k-values in the reciprocal lattice which are Bragg…

Q: What exactly is dark matter?

A: Particles that do not absorb, reflect, or emit light, hence cannot be detected by electromagnetic…

Q: why does light moving away from us appear redshifted?

A: When light moves away, it appears redshifted.

Q: How is the behavior of light influenced under extremely high gravitational fields, as in black…

A: In the vicinity of very high gravitational fields, for example, those found close to dark openings,…

Q: If an O-type star and our galaxy were at the same distance, which would have a greater magnitude? a)…

A: Given: The O-type star and our galaxy at same distance. The apparent magnitude decreases with the…

Q: From our frame of reference on Earth, objects slow to a stop as they approach black holes in space…

A:

Q: Does observed gravitational lensing correspond to a converging or diverging lens? Explain briefly.

A: Gravitational lensing: In this effect, the light rays bend towards massive objects in the space due…

Q: Explain what is an excitation table?

A: Determine: what is an explanation table. Excitation table is used to find the sets of input based on…

Q: What Silverlight is composed of?

A: Given: Silverlight To Explain: The components of Silverlight

Q: how many Galaxy are there in all?

A: The huge collection of gas, dust, and billions of stars and their stars, which are held together by…

Q: Chronologically place the Scientists and their theories about the nature of light, with description.

A: NATURE OF LIGHT: In order to understand different optical phenomena we are to consider the nature of…

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: what aspect of light is reacting to gravity: is it the wave or particle aspect, or both?

A: Q what aspect of light is reacting to gravity: is it the wave or particle aspect, or both?

Q: Suppose the temperature of a blackbody increases by 20%. What will happen to the total rate at which…

A: Energy radiated by a blackbody depends on its temperature and the relationship between temperature…

Q: what is Feynman's diagram in detail in semi-classical physics?

A: Feynman diagrams were invented in 1948 to help physicists find their way out of a morass of…

Q: What is direct transmission mode?

A: Mode of transmission in which transfer of data or something else will take place directly that is…

Q: A galaxy containing HI gas is moving with a velocity of 150 km/s away fromus (along the line of…

A:

Q: Explain what is meant by the Doppler Effect. Rationalize why Doppler broadening increases with…

A: Doppler effect is an important phenomenon in various scientific disciplines including planetary…