Pretend that galaxies are spaced evenly, 8.0 Mpc apart, and the average mass of a galaxy is 1.0 ✕ 1011 M. What is the average density (in kg/m3) of matter in the universe? Which model universe does this density value support?
Q: Pretend that galaxies are spaced evenly, 4.0 Mpc apart, and the average mass of a galaxy is 1.0 x…
A:
Q: critical density
A:
Q: In the deep space between galaxies, the density of atoms is as low as 106 atoms/m3, and the…
A: To determine,Part aThe pressure in the Pa.part bWhat volume (in m3) is occupied by 5 mol of gas.part…
Q: responding to a claim that the number of grains of sand was infinite, calculated that the number of…
A: Given information: The Archimedes estimate of the number of grains needed to fill the universe (n1)…
Q: Please answer within 90 minutes.
A: a. b.
Q: 1. Use the energy conservation solution with = 0 and theorem in Section A.1.) of the wave equation…
A:
Q: If a galaxy is 9.0 Mpc away from Earth and recedes at 488 km/s, what is H0 (in km/s/Mpc)? km/s/Mpc…
A: The question above has been given from Hubble's law. This law is also known as the Hubble-Lemaitre…
Q: A galaxy is observed receding from Earth with a speed of 2800 km/s. If the Hubble constant is 22…
A:
Q: why do you have to know the distance to a galaxy to find its mass?
A: The orbital motion of stars explains the masses of galaxies. The stars in a heavier galaxy exhibit…
Q: The Andromeda Galaxy is a member of the Local Group of galaxies. It is approaching us. Does this…
A: Given Andromeda galaxy is member of the local group of galaxies approaching us. Hubble law Hubble…
Q: The matter density in the Universe today is ?m=2.7×10−27kgm−3. What would be the value of the…
A: Given that the matter density in the Universe today is 2.7×10-27 kg/m3 and the Hubble constant is 38…
Q: If a galaxy is 8.6 Mpc away from Earth and recedes at 511 km/s, what is H. (in km/s/Mpc)? 59.42 v…
A: Concept: Since Given itself in the question H∘=59.42 km/s/Mpc Hubble Time is 16500000000 Years. We…
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: Problem 3. Consider a flat, single component universe. 1. For a light source at redshift z that is…
A: Given a flat single-component universe. 1.) The Hubble parameter is defined by…
Q: n. Estimate the relative velocity.
A: Given: Lo=2m L=0.75m To find: Relative velocity
Q: In the deep space between galaxies, the density of atoms is as low as 106 atoms/m3, and the…
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: The energy density ϵ in radiation is related to its temperature by ϵ=αT4. Compute the temperature…
A:
Q: If a galaxy is 9.1 Mpc away from Earth and recedes at 511 km/s, what is H0 (in km/s/Mpc)? 2. What…
A: Note: As per the policy, only the first question will be solved. If you want the solution for other…
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: Based on Figure 1 below, which galaxies are moving away from us the fastest? Velocity (km/sec) 2000…
A: first option is correct
Q: What is the estimated age of the Universe (in years) if the Hubble constant is 70 km/s/Mpc?
A:
Q: How many galaxies are there in the universe?
A: A galaxy is a gravitationally bound system of stars, stellar remnants, interstellar gas, dust, and…
Q: Which of the following might you expect to be an additional consequence of the fact that galaxies…
A: Given Which of the following might you expect to be an additional consequence of the fact that…
Q: In the deep space between galaxies, the number density of atoms is as low as 106 atoms/m3, and the…
A:
Q: Use excel calculator to fill in the missing calculations. 1pc = 3.26 ly Galaxy Andromeda Large Mag.…
A: We need to complete the table in Excel. 1pc = 3.26 lyAlso, 1 ly=9.461e+12 km
Q: What would be your estimate for the age of the universe if you measured Hubbleʹs constant to be 33…
A: We are given the value of Hubble constant. We are to find the age of universe. We are also given the…
Pretend that galaxies are spaced evenly, 8.0 Mpc apart, and the average mass of a galaxy is 1.0 ✕ 1011 M. What is the average density (in kg/m3) of matter in the universe?
Which model universe does this density value support?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- If a galaxy is 8.8 Mpc away from Earth and recedes at 498 km/s, what is H0 (in km/s/Mpc)? _______ km/s/Mpc What is the Hubble time (in yr)? _______ yr How would acceleration change your answer? A: If the expansion of the Universe has been accelerating, the Universe could be substantially younger than the value entered above. B: If the expansion of the Universe has been accelerating, the Universe could be substantially older than the value entered above.The matter density in the Universe today is Pm = -27 kg m-3. What would 2.7 x 10 be the value of the density parameter, 2o, if the Hubble constant had the value Ho = 38 km/s/Mpc? Assume the Universe does not contain dark energy and choose the option below that best matches your answer. Select one: O a. 0.1 O b. 2. О с. 1. O d. 0.7 О е. 0.5Please answer within 90 minutes.
- What is the estimated age of the Universe (in years) if the Hubble constant is 80 km/s/Mpc?In the reading, you were told that there were roughly 10,000 galaxies in the image of the Hubble Ultra Deep Field alone. The image is roughly 10 square arcminutes and there are roughly 1.5*10^8 square arcminutes composing the entire sky. With that in mind and assuming that the Hubble Ultra Deep Field represents an average part of the sky, roughly how many galaxies may exist in the observable universe? (Please include commas for every factor of 1,000; for example 2,343,567,890)The density of the universe is a. equal to the critical density if the universe is closed. b. equal to the critical density if the universe is flat. c. greater than the critical density if the universe is flat. d. greater than the critical density if the universe is open. e. none of the above.
- The critical density of a universe is around 5×10-27 kg/m³. Estimate the Hubble constant for this universe.An astronomer in an imaginary Universe observes a small patch of the sky (0.005% of the total) with very deep observations and finds one million galaxies. How many galaxies can they estimate to be present in the whole Universe? 10 billion 20 billion 50 billion O 70 billionThere are two parts to this question. I need to know the years for both. I have tried 14,000,000,000, 17,908,900,000, 17.29 x 10^9, and 17.9089 x 10^9 for the hubble time and all those are wrong. I have tried 17,908,900,000, 17.29 x 10^9, and 17.9089 x 10^9 for the second question and those are wrong too.
- The Universe is approximately 13.8 Billion years old. What is the volume of the visible universe in m3?Figure 2 shows the "rotation curve" of NGC 2742. It plots the “radial velocity (V)" (how fast material is moving either toward or away from us) that is measured for objects at different distances (R = radius") from the center of the galaxy. The center of the galaxy is at 0 kpc (kiloparsecs) with a speed of 9 km/sec away from us. (These velocities have been corrected for the observed tilt of the galaxy and represent true orbital velocities of the stars and gas.) 200 100 U4779 -100 As you can see, one side of the galaxy is moving with a negative velocity (spinning toward us), while the other side has a positive velocity (spinning away from us). Using Newton's gravity equation, we will be able to determine the gravitational mass of the entire galaxy and how the mass varies versus distance from the galaxy's center. -200 -8 8 -4 Radius (kpc) Read the following text carefully and follow the instructions: Select five radii spaced evenly from 0-10 kpc across the galaxy. Your selections should…Compute the critical density of the universe using the universal gravitational constant G= 6.67*10-11Nm2/kg2 and the Hubble constant of 73km/s/Mpc. B) What is the geometrical implication be if the universe has the critical density? Note: 1pc = 3.1*1016m