If a galaxy is 30 Mpc away from Earth and recedes at 400 km/s, what is Hubble's constant?
Q: If p = 2.7 x 10-27 kgm-3, what is the radius of curvature Ro of Einstein's static universe? How long…
A: Given: Density,ρ=2.7×10-27kg/m3Speed of light,c=3×108m/sEinstein's constant,κ=1.86×10-26m/kg Albert…
Q: Calculate the age of the universe if the Hubble constant were 65 km/s/Mpc.
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Q: The bright radio galaxy, 3c84, is observed to be moving away from the Earth at such high speed that…
A: The formula for Relativistic Doppler effect in wavelength can be expressed as below, Here λ and λₒ…
Q: Imagine that an observed distant galaxy is measured to have a distance of 40 Mpc by a Type Ia…
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Q: A galaxy cluster has a recessional velocity of 19,000 km/s. Using the best estimate for Hubble's…
A: To calculate the distance of the distant galaxies in megaparsecs (Mpc) Hubble’s law is used. If the…
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: Find the distance to a galaxy whose redshift reveals that it's re- ceding from us at 2.5×104 km/s.
A: As per the Hubble expansion, the universe is expanding. This was observed from the galaxies moving…
Q: A galaxy is 30 Mpc away from us and has a recession velocity of 2000 km.s-1 . What is Hubble’s…
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Q: n. Estimate the relative velocity.
A: Given: Lo=2m L=0.75m To find: Relative velocity
Q: What is the distance in parsec to pulsar 0628-28 using 400 and 600 MHz frequencies? The dispersion…
A: GIven for pulsar 0628-28, dispersion measure DM is 124.5We have to determine distance in parsec to…
Q: The hydrogen Balmer line Hβ has a wavelength of 486.1 nm. It is shifted to 579.8 nm in a quasar's…
A: Redshift is defined as the change in the wavelength due to apparent motion in the quasar spectrum.
Q: If a galaxy is 9.3 Mpc away from Earth and recedes at 508 km/s, what is H, (in km/s/Mpc)? 54.62…
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Q: Using a value for Hubble's constant of 71 km/s per Mpc, find the recession velocity of a galaxy at a…
A: All observed galaxies were found to be redshifted which meant they were moving away from the Earth.…
Q: If the value of the Hubble's constant were found to be 60 km/s/Mpc, what would the Hubble time be?
A: The galaxies in our universe are moving away from each other. This was observed by Edwin Hubble. He…
Q: A galaxy is observed to be at 10.0 Mpc from Earth. If it is receding at 520 km/s, calculate the…
A: Edwin Hubble in his observations found that the galaxies were moving away from us instead of getting…
Q: Suppose that a galaxy has 109 M⊙ of neutral HI gas with a temperature of about 10 K. Estimate the…
A: Given Data: The mass of the galaxy is, M = 109 M Temperature about 10k The luminosity of the 21cm…
Q: Is Hubble's law applicable in another planet or galaxy?
A: In this question we have to answer whether the Hubble's Law is applicable in another planet or…
Q: What is the redshift z of a galaxy 156 Mpc away from us? Note: Assume a value of the Hubble…
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Q: Pretend that galaxies are spaced evenly, 6.0 Mpc apart, and the average mass of a galaxy is 1.0 x…
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Q: If a galaxy is 10.0 Mpc away from Earth and recedes at 520 km/s, what is Hubble's constant?
A: Edwin Hubble in his observations found that the galaxies were moving away from us instead of getting…
Q: If a quasar is 1,980 times more luminous than an entire galaxy, what is the absolute magnitude of…
A: Given: Luminous Intensity of Entire Galaxy,IA=ILuminous Intensity of Quasar,IB=1980IA=1980IAbsolute…
Q: Certain spiral galaxy is 10.6 Mpc away from us. How fast in km/s is this galaxy moving away from us?…
A: Given, Distance of Galaxy is = 10.6 Mpc The value of Hubble constant = 71 km/s/Mpc We need to…
Q: Can we measure distances to other galaxies using parallax? Why or why not?
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Q: The hypervelocity star S5HVS1 has a redshifted Hβ line (rest wavelength of 486.135 nm) observed at…
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Q: The hydrogen Balmee lime Hb has a wavelength of 4.86.1 nm. It is shifted to 55.8 nm in a quasar's…
A: The expression for the red shift is,
Q: A black hole (m = 2.90 x 10^9 Ms) sits in the middle of the M87 galaxy. Calculate its gravitational…
A: mass of black hole = 2.90×109 MsMs = 1.99×1030 kg
Q: Calculate the age of the universe for the following Hubble's constant, (a) 50 km/s/MDC
A: As per Hubble's law, the universe is expanding. The recessional velocity of galaxies is directly…
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: These are the waves: Wave 1: wavelength = 100 m- water depth = 4000 m ----- wave height = 10 m Wave…
A: For the wave Given,The wavelength, Water depth, The wave height, The relative depth,The wave is a…
Q: There exists an element visible in the spectrum of galaxies that shows the following spectra when…
A: Introduction: The Doppler effect refers to the apparent shift in the wavelength of a wave when there…
Q: What is the redshift z of a galaxy 186 Mpc away from us? Note: Assume a value of the Hubble…
A: Hubble's law, also known as Hubble- Lemaitre law states that the velocity of the galaxy, also called…
Q: Certain spiral galaxy is 8.6 Mpc away from us. How fast in km/s is this galaxy moving away from us?…
A: Write the given values with the suitable variables. d=8.6 MpcH0=69.1 km/s/Mpc Here, d is the…
Q: What is the redshift z of a galaxy 172 Mpc away from us? Note: Assume a value of the Hubble…
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Q: The Hubble constant is (approximately) 70 kilometers per second per megaparsec. At approximately…
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Q: Suppose a galaxy is moving away from Earth at a speed of 0.78c. It emits radio waves of 0.680 m.…
A: Due to the Doppler shift when light from a source that is moving away is detected it will have a…
Q: You find a small satellite galaxy orbiting 66 kpc from the center of a larger galaxy at a speed of…
A: Given data: Radius of the galaxy r=66 kpc. Velocity of satellite v=210 km/s. According to Kepler's…
Q: The Perseus-pices supercluster of galaxies is 64 Mpc from Earth. How long (in years) does it take…
A: Given: Perseus-pices supercluster separation from earth→D=64 Mpc Standard conversion: 1…
Q: In the reading, you were told that there were roughly 10,000 galaxies in the image of the Hubble…
A: Given: one image of hubble ultra deep field is roughly 10 square arcminutes. Number of galaxies in…
Q: why is it difficult to measure the Hubble constant?
A: Hubble’s constant is used to find and describe the expansion of universe. Edwin Hubble, the American…
Q: What is Hubble constant?
A: Introduction: Hubble constant is the constant of proportionality of the relative velocity of the…
Q: Supposed that we were to discover that all galaxies are actually twice as far away as we think. How…
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