If you are in intergalactic space, calculate the number of CMB photons that you would absorb per second and also calculate the rate of radiative energy absorbed from CMB.
Q: Calculate the mass (in kg) of ¹4C that has an activity of 1 Bq.
A: Givenactivity=1 Bqaslo half life of C-14=5730 yr
Q: Consider the two nuclear reactions I: A + B → C + E…
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Q: The temperature of the CMB today is T=2.725 K. Calculate the temperature of the CMB at redshift…
A: Given T = To = 2.725 K z = 2000 Temperature of CMB at redshift 'z' is given by T = To (1+z)
Q: The Higgs bosons was discovered at the LHC in 2012 and is a cornerstone for our understand of the…
A: Given: The luminosity of LHC is L = 1038 m-2s-1 The proton scattering cross-section is σ = 100 mb
Q: Calculate the binding energy per nucleon for a 5N nucleus. The mass of the neutral atom of N is…
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Q: Two ions containing a total of 98 protons, 59 electrons, & 126 neutrons are smashed together at the…
A: Two ions containing a total of 98 protons, 59 electrons, & 126 neutrons. After the collision…
Q: What is the total energy of all the radiation in the current Hubble Radius (Length)? Assume H0=70…
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Q: 1.0 0.8 0.6 Cosmic background data from COBE 0.4 0.2 0.0l 0.5 10 Wavelength A in mm c) The left hand…
A: from the graph, the maximum intensity of radiation is at λ=1 mm. From Wein's law, we have…
Q: Energy generation in the Sun arises because hydrogen nuclei fuse to form helium nuclei. Write down…
A: To write down: Proton-Proton chain for energy generation in Sun. To state the most important…
Q: Since you are made mostly of water, you are very efficient at absorbing microwave photons. If you…
A: Given Since you are made mostly of water, you are very efficient at absorbing microwave photons. (a)…
Q: Why does primordial nucleosynthesis end about 3 minutes after the Big Bang? Select one: a. The…
A: After the Big Bang ,matter formation started by pair production during the first four seconds of the…
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: If neutrino oscillations do occur, will they violate conservation of the various lepton family…
A: The total lepton number is conserved in nature.
Q: A supernova occurs 140,000 light years from Earth, where a neutron star of mass 1.6 solar masses and…
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Q: Calculate the partial pressure of helium gas for a volume of 1.0 ✕ 10-6 m3 of 206Rn gas after 17…
A: Givenolume (V) = 1.0×10-6 m3 Pi, R206n = 1 atm Time t12 = 5.67 min…
Q: Suppose that a tau neutrino and a tau antineutrino, both of which are just barely moving, encounter…
A: Write the expression for the wavelength of light. Here, h is Planck’s constant, p is the momentum,…
Q: Two ions containing a total of 28 protons, 115 electrons, & 66 neutrons are smashed together at the…
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Q: write the complete B+ decay of 11-c. calculate energy released in the decay. mass-11-c = 11.01133u…
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Q: 40K decays to 40Ar with a half-life of 1.3 billion years. Argon is a gas, so 40Ar escapes into the…
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Q: 40K decays to 40Ar with a half-life of 1.3 billion years. Argon is a gas, so 40Ar escapes into the…
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Q: Ten grams of carbon from a freshly felled tree produce 150 electrons (from β-decay) per minute. Ten…
A: Given, decay rate=25% t1/2=5730 yrs
Q: The mass of the neutrino plays an important role in the universe. Suppose the mass of two neutrinos…
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Q: Compare the energy produced per kg of fuel for the combustion of coal, d-d fusion and d-t…
A: For coal combustion C+O2 → CO2+33.94KJ/g So Energy release per kg will be,…
Q: GM What is the orbital period of a bit of matter in an accretion disk that is located 3 x 105 km…
A: Time period was found to be 526 seconds So answer to fill in blank is 526. Detailed solution is…
Q: How much energy does 1 nuclear reaction which converts 4 protons to a Helium nucleus generate?
A: Note: As per the guidelines, we can only answer first question of multiple question. Sorry for the…
Q: As recently as the late 1970s, some wrist watches were manufactured using tritium (3H) as a…
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Q: n 1999, scientists discovered a new class of black holes with masses 100 to 10000 times the mass of…
A: The radius of sun is The average density of sun is The diameter of the moon is The mass of the black…
Q: Assume that the core of the Sun has one-eighth of the Sun’s mass and is compressed within a sphere…
A: Solution:
Q: Astronomers can determine the heat of various areas of the universe by making observations about…
A: Gamma rays have the shortest wavelengths and the highest energy levels of any electromagnetic wave.…
Q: Assume that the core of the Sun has one-eighth of the Sun’s mass and is compressed within a sphere…
A: The time for Sun to burn its hydrogen is the ration of mass of hydrogen to the rate of hydrogen…
Q: Problem 2: Black hole – the ultimate blackbody A black hole emits blackbody radiation called Hawking…
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Q: What was the approximate number density of CMB photons when the CMB had a higher temperature of 507…
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Q: Einstein’s mass-energy equivalence equation states that E = mc2. Explain how the equation shows that…
A: Einstien’s equation E = mc2 tells us what happens in a nuclear reaction and how they produce so much…
Q: Recall that the solar constant-the flux of solar energy reaching Earth's vicinity- is about 1380…
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Q: Experiment 6: Transportation a) A typical car gets about 25 miles to the gallon in combined city and…
A: Since more than three subparts are asked in the question, a solution for the first one is provided…
Q: A gamma ray burst delivers approximately 5.0 X10-6 joules/m2 to a detector on an orbiting space…
A: A gamma-ray burst delivers approximately 5.0 X10-6 joules/m2 to a detector on an orbiting space…
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: how much energy (in Joules) is released by Helium -4 during a nuclear reaction?
A: Given: Helium-4 Asked to find energy released during a nuclear reaction.
Q: The cosmic background radiation observed is starlight. a) True b) False
A: True or false: The cosmic background radiation observed is starlight.
Q: Why was the Davis experiment only able to detect one-third of the neutrinos originally predicted?…
A: Required : Why was the Davis experiment only able to detect one-third of the neutrinos originally…
Q: Is there other evidence of the Big Bang besides the well-documented red shifts?
A: Introduction: The Big Bang model describes how the universe expanded from an initial state of high…
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