How the Hubble law allows you to estimate the distances to galaxies? Explain
Q: What evidence is there that quasars occur in distant galaxies? Explain.
A: To explain the correct answer is given below,
Q: Consider a galaxy with a density profile of the type Ро p(r) = (r/ro)[(1+r/ro)²] ' where po is the…
A: Step 1: The mass profile of the galaxy can be obtained by integrating over the density profile as…
Q: the
A: The galaxy with stars bulged at the center surrounded by a disc with arms is called a spiral galaxy.…
Q: A.black hole (m = 2. 90 × 10°M,) sits in the middle of the M87 galaxy. Calculate its gravitational…
A: Mass of the black hole is given as m = 2.9×109 Mswhere Ms = 1.99×1030 kgTherefore,m = 2.9×109 ×…
Q: If a quasar has a recessional velocity of 2.7 × 10 5 km/sec and is determined to be 3600 Mpc, what…
A:
Q: The figure below is based on an assumed Hubble constant of 70 km/s/Mpc. How would you change the…
A: Given Hubble constant velocity = 70 km/s/Mpc
Q: Indicate whether the following statements are true or false. (Select T-True, F-False. If the first…
A:
Q: 3. The formula for Hubble's Law using the velocity v is valid only for velocities much smaller than…
A: Given data: Redshift z=4.89. The recessional velocity is given as, v=cz+12-1z+12+1 Here, c is the…
Q: Describe a quasar.
A: Quasar is an extremely luminous active galactic nucleus. inside quasar there is a supermassive black…
Q: Pretend that galaxies are spaced evenly, 8.0 Mpc apart, and the average mass of a galaxy is 1.0 ✕…
A: Average density of the matter in the universe ρavg=M43πd23=6Mπd2
Q: Using our example from the previous unit, let's try to determine the Hubble time for this example…
A: Solution Given dataSpeed v=4000km/sDistance d=20Mpcwhat would the age of that universe be in…
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, t=1H ---------------- (1) Here H is the Hubble’s constant…
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: Observations of distant galaxies show O they appear older than they really are. the size of the…
A: We are able to observe because of light reach us from the stars.
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: what are some fundamental properties of late type galaxies that our theories of galaxy formation…
A: All those galaxies which are included under Spiral and Irregular Galaxies are termed as Late Type…
Q: Find the equivalent of Kepler's three laws of motion if the gravita- tional force were to behave…
A:
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: Assume that the Milky Way has a central bulge of uniform density with a radius R. Also assume that…
A: 1) In the rotation velocity profile of the galaxies, the velocity of the stars outside the bulge…
Q: Explain why galaxies can have different shapes. please explain briefly and clearly
A: Reason why galaxies have different shapes : When we gaze up into the night sky, we can see stars…
Q: Explain how the Hubble constant, H0, can be used to make an estimate for the age of the Universe.…
A: Hubble's Law gives us the conclusion that the universe is always expanding. It takes very short…
Q: Pretend that galaxies are spaced evenly, 6.0 Mpc apart, and the average mass of a galaxy is 1.0 x…
A:
Q: Consider a universe in which the Hubble constant has been measured to have the value Ho = 50…
A: Given: The measured value of the Hubble constant is H0 = 50 km / s / Mpc
Q: 1. What is the total energy output of a radio galaxy in the local Universe (at z = 0.1) with a flux…
A:
Q: 3. Consider the following two universes: Universe I: flat, matter-dominated with no cosmological…
A:
Q: Questions/Analysis: 12. Classical Cepheid variables have been observed in other galaxies. What would…
A: Given data, Period of Cepheid T=65 days. Distance of star d=2500000 LY = 766503 parsec.
Q: If a galaxy is 8.9 Mpc away from Earth and recedes at 497 km/s, what is H, (in km/s/Mpc)? km/s/Mpc…
A:
Q: At the speed of light, approximately how long would it take to travel all the way across the Milky…
A: Milky way galaxy length(diameter) is about 100,000 light-years. And 1 light-year is the distance…
Q: What was the maximum age of the universe predicted by Hubble's first estimate of the Hubble…
A: The first estimate for the Hubble constant H was 500 km/s/Mpc. The formula for the age of the…
Q: Which of the following is an accurate statement about quasars?
A: ANS: They are abnormally massive, luminous stars at the cores of ancient galaxies.
Q: What value for the Hubble constant would another galaxy in the universe observe?
A: ANS: c) a unique Hubble constant for that specific location in the universe.
Q: How can you explain the fact that the Andromeda Galaxy appears to be approaching us rather than…
A: Each element emits photons only at a certain wavelength. They form either emission or absorption…
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: 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: The Hubble constant is found from the... Group of answer choices slope of the line fit to…
A: Given data- Hubble's law- Hubble's law relates the recession velocity of galaxy and the distance to…
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: If a galaxy is 9.0 Mpc away from Earth and recedes at 488 km/s, what is H, (in km/s/Mpc)? | km/s/Mpc…
A: Hubble discovered that galaxies appear to move away from Earth and the velocity of recession (v) is…
Q: The matter density in the Universe today is Pm = kg m-3. What would 2.7 x 10-27 be the value of the…
A:
Q: Explain why the universe cannot be older than the Hubble time.
A: Given: To explain universe is not older than the Hubble time as,
Q: The Hertzsprung-Russell diagram shows that for most stars, as the absolute magnitude increases, the…
A: Introduction: A star`s composition, structure and temperature changes during its lifetime. Ejnar…
Q: Which of the following best describe the reasons we have to infer that a supermassive blackhole…
A: Actually the blackhole is a very higher density object . According to the general theory of…
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: 3. The Androme da Galaxy hasa Muss of around 4x1042 kg and is 24k10" mauay What is you eScaße…
A: mass of galaxy = 4 * 1042 kg d = 2.4 *1 022 m Vescape = 2GM/d
Q: 2) What will be the Hubble constant of a universe with an age of 80 billion years?
A: Edwin Hubble observed that galaxies were moving away from each other instead of coming closer. He…
How the Hubble law allows you to estimate the distances to galaxies? Explain.
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