What is the "radius of the Universe", Ro? Express the answer in Mpc and light years. Remembering ...
In a flat Universe that contains only a fluid with equation of state P = wpc, where w = -1/6, the evolution of the scale factor, R, with cosmic time, t, is given by R(t) = R, (1)", where R = R(to), and to is the present time: to = 3H, t = 0 corresponding to the Big Bang. The Hubble constant is H. = 67 kms-'Mpc-!. In this model of the Universe: 1. How does the Hubble parameter scale...
In very rough numbers, galaxies have a mass of 10 billion solar masses (Mo), there are 100 billion galaxies in the Universe, and the Universe is 13 billion light-years in radius. From such estimates, calculate how many protons there are in the Universe, how many electrons, and how many neutrons.
Take h = 0.7. Orad,0 = 0.0m,0-0.3, and ΩΛ,0 0.7. (a) Use the formula for how the Hubble parameter H(t)-à/a changes with scale factor and express it as a function of redshift. b) How fast was the universe expanding at z-0.1, z 0.4, z 0.7, z -2, 2-5, and z = 1100? (in units of km/s/Mpc)? (c) Suppose instead that there is the same amount of matter but no dark energy (i.e. no cosmological constant). What would the expansion rates...
2000 Ho=68 km/s Mpc * Redshift (km/s) 1000 * Virgo Cluster 0 + + 0 a Montenele best 20 10 Distance (Mpc) Part 5/6 Let's now calculate the number of years that is, recalling that one year equals approximately 3 x 107 seconds x 10 നമാലയിൽ രാജി years Terms The universe is expanding according to Edwin Hubble's famous equation Hod where v is the velocity of a galaxy at distance d away. Professional astronomers usually talk about Hubble's Constant in...
How and why does the CMBR, redshifts of distant galaxies, and relative abundances of the elements support a beginning to our universe? About 380,000 years after the big bang, the universe became transparent to light. What had to occur for this to happen and what remnant is left behind that we can see today? Go to Planck and The Cosmic Microwave Background and answer the following: How accurate is the the Planck data? What do the different colors help us...
Part G What is the value of Co for the condition of Part E? Express your answer with the appropriate units Value Units Submit Request Answer Review Constants The peak amplitude of the sinusoidal voltage source in the circuit shown in the figure is 150 V, and its frequency is 5000 rad /s. The load resistor can be varied from 0 to 4000 Ω, and the load capacitor can be varied from 0.1 μF to 0.5 μF (Figure 1) Figure...
The nearest star to Earth is Proxima Centauri, 4.2 light-years away. Part A At what constant velocity must a spacecraft travel from Earth if it is to reach the star in 3.9 years, as measured by travelers on the spacecraft? Express your answer using two significant figures. v=_____c Part B How long does the trip take according to Earth observers? Express your answer using two significant figures. t=_____ years
What is roughly the frequency (in Hz) between What about for successive values of +Emax for visible light? een Bmax? Express your answer as an orde r of magnitude or violet light? Recall from the activities in which you learned energy of a wave Which is tht the freaue ons oscillating in SHM, then explain whether the electrons cy and source, if the e of an EM wave are electrons oscillating in SHM, thenhnb source o creating and of violet...
The nearest star to Earth is Proxima Centauri, 4.3 light-years away. At what constant velocity must a spacecraft travel from Earth if it is to reach the star in 5.3 years, as measured by travelers on the spacecraft? Express your answer using two significant figures. C is the answers unit. How long does the trip take according to Earth observers? Express your answer using two significant figures. years is the answers unit.
A comet orbits the Sun in 4,063 years. What is its average orbital distance from the Sun? Express your answer in AU (enter "AU" for units) and round it to the nearest integer А. An asteroid orbits the Sun at an average orbital distance of 3.12 AU. What is its average orbital period? Express your answer in years (enter "years" for units) and round it to two decimals. В. A moon orbits a planet in 1.5 days. What is the...