A galaxy in the constellation Pisces is 5210 Mly from the earth. (a) Use the Hubble law to calculate the speed at which this galaxy is receding from earth. (b) What redshifted ratio l0 /lS is expected for light from this galaxy?

Q: d) The Cosmic Microwave Background Radiation (CMB) is observed to have a present day temperature of…

A: To answer: The origin of the fluctuations in the Cosmic Microwave Background Radiation (CMB).

Q: Compute the momentum and energy of a top quark with a wavelength of 38nm. Energy: 5.216e-14 X Units:…

A: By the de broglie relationship,

Q: If the smallest meaningful time interval is greater than zero, will the lines in Figure 34.9 ever…

A: Given: In figure, the two lines are approaching each other and the one line is moving from right to…

Q: (a) Calculate the approximate age of the universe from the average value of the Hubble constant, H0…

A: ( a ) To find the time  t =dv t = 1Mly106ly1Mly9.46×1012km1ly20km/s t = 4.73 x 1017s

Q: Calculate the cyclotron frequency for a non-relativistic proton per Tesla of magnetic field.

A:

Q: Distances to local galaxies are determined by measuring the brightness of stars, called Cepheid…

A: Absolute brightness is a constant and is 10 parsecs from Earth whereas measured brightness depends…

Q: What is the total energy of all the radiation in the current Hubble Radius (Length)?  Assume H0=70…

A:

Q: The muon is a heavier relative of the electron; it is unstable, as we’ve seen. The tauon is an even…

A: Given: The half-life of tauon relative to muon is t=2.9X10-13 The velocity of tauon is v=0.999c.…

Q: Consider a universe where Big Bang nucleosynthesis produced significantly more 4He than 1H. Estimate…

A: We have to Consider a universe where Big Bang nucleosynthesis produced significantly more 4He than…

Q: Assume a flat Friedmann-Robertson-Walker universe, and that the density parameters for matter…

A:

Q: The gravitational wave source GW 170817 was used to obtain an estimate of the Hubble Constant of Ho…

A:

Q: Explain what is meant by the term cosmological redshift, and contrast it with the Doppler shift that…

A: A Doppler red shift is the expansion of the wavelength and decrease in the frequency when an the…

Q: 40 Because the apparent recessional speeds of galaxies and quasars at great distances are close to…

A:

Q: A 2 GHz radio signal is detected from a galaxy as 0.86GHz. Estimate the relative velocity.

A: Like all waves light waves also get Doppler shifted. In the case of light waves, the Doppler shift…

Q: n. Estimate the relative velocity.

A: Given: Lo=2m L=0.75m To find: Relative velocity

Q: A Type la supernova explodes in a galaxy at a distance of 8.70 x 10' light-years from Earth. If…

A: Given value--- Hubble constant = 68.1 km/s/Mpc . distance of galaxy from Earth = 8.70 × 107 light…

Q: As a result of the decay of an inertial K0- meson, two π0- meson particles moving in opposite…

A: Given, Inertial energies ,

Q: The mass of a theoretical particle that may be associated with the unification of the electroweak…

A: Given data: The mass of the theoretical particle that may be associated with the unification of the…

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: 2. Now we move the detector to the bottom or base of the mountain. How long will it take the muon…

A: Here we have to use concept of special relativity more specifically length contraction. Due to…

Q: The Lyman a line in a galaxy's spectrum was observed to be 208 nm. Calculate the Doppler redshift.

A: When there is relative motion between observer and source the wavelength observed will e shift. When…

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…

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A:

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: The largest known redshift attributed to a specifi c molecule is z = 6.42 from the CO molecule in…

A: Given data: The red-shift parameter is z=6.42. The red-shift parameter z and relative velocity…

Q: What was the approximate number density of CMB photons when the CMB had a higher temperature of 507…

A:

Q: The hypervelocity star S5HVS1 has a redshifted Hβ line (rest wavelength of 486.135 nm) observed at…

A:

Q: If the average density of the Universe is small compared with the critical density, the expansion of…

A: According to Hubble’s law v = HR The expression for R  is R=vΔt Thus, v=HvΔtΔt=1H Here, ∆t is the…

Q: blackbody at a temperature of 5000 K emits radiation. Calculate the wavelength at which the…

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Q: The lifetime of a muon is 2.20 ?s. If you measured its mass to be 105.7 MeV/c2, what would be the…

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Q: The rest wavelength of the Hα transition of atomic hydrogen is 656.3 nm (recall that 1 nm=10-9 m).…

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Q: Use Wien’s law to answer the following questions: (a) The cosmic background radiation peaks in…

A: According to Wien’s law, The temperature in this case can be obtained as

Q: Electron-positron pair production may play a role in a pulsar's beamed radiation mechanism. Find the…

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Q: The CaII H and K lines have rest wavelengths of 396.85 nm and 393.36 nm, respectively. In the…

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Q: A 5 micron droplet of water is being carried in standard air toward a 500 micron drop of water at a…

A: Given, Let the two water drops are A and B and their velocities va and vb. If two drops are…

Q: Assume a flat Friedmann-Robertson-Walker universe, and that the density parameters for matter,…

A:

Q: A proton‑antiproton annihilation takes place, leaving two photons with a combined energy of 2.50…

A: From the question, it is given that- The combined energy of photons during proton-antiproton…

Q: y for

A: The universe critical density can be denoted as, ρcrit=3Ho28πG Gravitational constant is…