Pretend that galaxies are spaced evenly, 4.0 Mpc apart, and the average mass of a galaxy is 1.0 x 1011 Me. What is the average density (in kg/m3) of matter in the universe? (Note: The volume of a sphere is r3, and the mass of the sun is 2.0 x 1030 kg.) kg/m3 Which model universe does this density value support? O flat O open O closed

Q: A star, which is 2.3 x 1020 m from the center of a galaxy, revolves around that center once every…

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: 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: 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: 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 to recede from Earth with an approximate speed of 0.81c. Approximately how…

A:

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: 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: Suppose that the universe were full of spherical objects, each of mass m and radius r . If the…

A:

Q: Suppose that the universe were full of spherical objects, each of mass m and radius r . If the…

A: Given:  Mass of one spherical ball = 4 kg radius of the one spherical ball = 0.0407 m Spherical…

Q: In the deep space between galaxies, the density of atoms is as low as 106 atoms/m3, and the…

A:

Q: In the deep space between galaxies, the number density of atoms is as low as 106 atoms/m3, and the…

A:

Q: A galaxy with a spherically symmetric distribution of matter has a mass density profile of the type…

A:

Q: To get an idea of how empty deep space is on the average, perform the following calculations:  (a)…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subpartsfor…

Q: On average, how far away are galaxies that are moving away from us at 2.0% of the speed of light?

A:

Q: What are the angular diameters of the following, as seen from Earth? a. The Sun, with radius R =…

A: Given: The radius of the sun is Rsun=7×105 km=7×108 m. The distance of sun from earth Dsun=1 AU…

Q: In the deep space between galaxies, the number density of atoms is as low as 106 atoms/m3 and the…

A: Given Data : The density of the atoms in the space between the galaxies is ρ=NV=106 atomsm3 Here N…

Q: Recent findings in astrophysics suggest that the observable universe can be modeled as a sphere of…

A: It is given that,

Q: Suppose that the universe were full of spherical objects, each of mass m and radius r . If the…

A: Critical density is the average density required for the universe to halt its expansion. Such a…

Q: An astronomer observed the motions of some galaxies. Based on his observations, he made the…

A:

Q: In the deep space between galaxies, the number density of atoms is as low as 106 atoms/m3, and the…

A:

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…

Q: Pretend that galaxies are spaced evenly, 7.0 Mpc apart, and the average mass of a galaxy is 1.0 ✕…

A: The average density of matter in the universe is given by

Q: Use this table of magnitudes to determine the following. (a) What is the ratio of the distance to…

A: According to question this is given that Diameter of the Milky Way galaxy dMW=1021meters approx…

Q: The density of the universe is   a. equal to the critical density if the universe is closed.   b.…

A: Critical density is the average density of matter required for the universe to just halt it's…

Q: The visible section of the Universe is a sphere centered on the bridge of your nose, with radius…

A: a) The visible thing is very limited to the universe's finite age and light's speed. Time is less…

Q: Problem 6. The average density p of the Universe today is 3 x 10-27kgm-³ 1. Find this density in (a)…

A: Given:  Average density of Universe = 3×10-27 kg/m3

Q: The current (critical) density of our universe is Pc ~ 10-26kg/m³. Assume the universe is filled…

A: Given: Critical density of universe = 10-26 kg/m3 Mass of 1 person = 100 kg