Bartleby Related Questions Icon

Related questions

Q: Pretend that galaxies are spaced evenly, 4.0 Mpc apart, and the average mass of a galaxy is 1.0 x…
A:
Q: How would I calculate the age of the universe in billions of years from the Hubble constant (73.48…
A: Everything that exists resides in the universe, including the Earth, planets, stars, space, and…
Q: critical density
A:
Q: Assume a flat FRW universe, dominated by radiation throughout its history. Calculate the physical,…
A: The objective of the question is to calculate the physical, cosmological horizon size at a given…
Q: Suppose the energy density of the cosmological constant is equal to the present critical density En…
A: Einstein came up with the universal or cosmological constant to balance the calculations in his…
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: 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: 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: The critical mass density needed to just halt the expansion of the universe is approximately 10-26…
A: Given critical mass density needed to halt the expansion of the universe is ρcrirical = 10-26 kg/m3
Q: Critical density of a universe is found to be 6×10-27 kg/m. Estimate the value of Hubble constant.
A: It was observed that galaxies are moving away from each other and the farther they are faster they…
Q: Pretend that galaxies are spaced evenly, 2.0 Mpc apart, and the average mass of a galaxy is 1.0 x…
A: We know that:-Spherical galaxy average density,ρ=M43πr23         Equation 1r=2.0 Mpcconvert Mpc to…
Q: Consider the following line element, ds² = -dt² + a² (t) (dx² + dy²) + b² (t) dz², where a(t) and…
A: To state whether or not the given line element obeys the Cosmologial Principle.
Q: Calculate the age of the universe for the following Hubble's constant, (b) 65 km/s/Mpc
A: As per Hubble's law, the universe is expanding. If we assume that the expansion's apparent velocity…
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…
A:
Q: The present number density of electrons in the Universe is the same as that of protons, about 0.2…
A: The present number density of electrons = 0.2m-3. Long before the formation of microwave background,…
Q: The energy density ϵ in radiation is related to its temperature by ϵ=αT4. Compute the temperature…
A:
Q: Estimate the critical density of the universe if the Hubble's constant was 100 km/s/Mpc.
A:
Q: Compute a numerical value (in units of protons/m3 ) for the critical density of our Universe. How…
A: The critical density for the Universe is given by, ρ = 3H28πG where H is the Hubble constant and G…
Q: What is the estimated age of the Universe (in years) if the Hubble constant is 70 km/s/Mpc?
A:
Q: Use the Friedmann equations to show that the deceleration parameter go and the density parameter N…
A: According to Dark energy and the cosmological constant, the acceleration of the scale factor is…
Q: Estimate the critical density of the universe if the Hubble's constant was 50 km/s/Mpc.
A: The minimum density that is required to stop the expansion of the universe is defined as the…
Q: According to the version of the Big Bang Theory without a Cosmological Constant (and without Dark…
A: Hubble's Law states that as the universe is expanding in all directions, the receding velocity of an…
Q: If the Hubble's constant was 100 km/s/Mpc instead of 70 km/s/Mpc what would be the estimated age of…
A: It was observed that the galaxies were moving away from us. Edwin Hubble calculated their recession…
Q: If a galaxy is 8.9 Mpc away from Earth and recedes at 510 km/s, what is H0 (in km/s/Mpc)?
A: The Hubble constant can be calculated by v=H0d Where v is velocity in km/s Ho is Hubble constant in…
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: The rest wavelength of the Hα transition of atomic hydrogen is 656.3 nm (recall that 1 nm=10-9 m).…
A:
Q: The temperature of the universe is 2.76 K. What is the wavelength of the cosmic background…
A:
Q: If the mass density of the universe is above the critical density as it appears to be with the mass…
A: Given, The mass density of the universe is above the critical density.
Q: What would be the critical density of matter in the universe if the value of the Hubble constant…
A:
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…
Question

The matter density in the Universe today is ?m=2.7×10−27kgm−3. What would be the value of the density parameter, Ω0, if the Hubble constant had the value H0  = 38 km/s/Mpc?

Expert Solution
Check Mark
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
See solutionCheck out a sample Q&A here
Step 1
VIEW
Step 2
VIEW
Step 3
VIEW
Step 4
VIEW
bartleby

Step by stepSolved in 4 steps

See solution
Check out a sample Q&A here
Blurred answer
Still need help?
Follow-up Questions
Read through expert solutions to related follow-up questions below.
Follow-up Question

Estimate the critical density of the universe if the Hubble's constant was 100 km/s/Mpc.

 

Solution
Bartleby Expert
by Bartleby Expert
SEE SOLUTION
Follow-up Questions
Read through expert solutions to related follow-up questions below.
Follow-up Question

Estimate the critical density of the universe if the Hubble's constant was 100 km/s/Mpc.

 

Solution
Bartleby Expert
by Bartleby Expert
SEE SOLUTION
Knowledge Booster
Background pattern image
Similar questions