The cosmic background radiation permeating the universe has the spectrum of a 2.7-K blackbody radiator. What...
The cosmic background radiation permeating the universe has the spectrum of a 2.7-K blackbody radiator. What is the peak wavelength of this radiation? The constant in Wien's law is 0.0029 m ∙ K. Hint: the answer will be in mm
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The cosmic background radiation permeating the universe has the
spectrum of a 2.7-K blackbody radiator. What...
Please make sure you give me the correct answer 13) The cosmic background radiation permeating the...
Please make sure you give me the correct answer
13) The cosmic background radiation permeating the universe has the spectrum of a 2.7-K blackbody radiator. The energy density of deep space is 4.19 x 10-8 J/cm3 a, What is the peak wavelength of this radiation? b, Assuming the energy density of space is from these photons, how many photons are there on average in each cubic centimeter of space?
The universe is filled with thermal radiation, which has a blackbody spectrum at an effective temperature...
The universe is filled with thermal radiation, which has a blackbody spectrum at an effective temperature of 2.7 K. What is the peak wavelength of this radiation? What is the energy (in eV) of quanta at the peak wavelength?
1. [Cosmic background temperature] At present, the cosmic background radiation is at 3 K. Suppose...
1. [Cosmic background temperature] At present, the cosmic background radiation is at 3 K. Suppose the universe expands adiabatically (but not necessarily quasistatically). What can you say about the tem- perature of the cosmic background radiation when the total volume of the universe was one half of the present volume?
1. [Cosmic background temperature] At present, the cosmic background radiation is at 3 K. Suppose the universe expands adiabatically (but not necessarily quasistatically). What can you say about the tem-...
The space is filled with background radiation, remnant of the early age of the universe. Currently...
The space is filled with background radiation, remnant of the early age of the universe. Currently the distribution of this radiation is similar to the radiation of a blackbody at the temperature of 2.7 K. What is λmax corresponding to this radiation? What is its total intensity? Compare the intensity of the background radiation to the intensity of the Sun at the visual wavelengths.
The background radiation in space corresponds to what temperature blackbody radiation? a. 5800 K b. 0...
The background radiation in space corresponds to what temperature blackbody radiation? a. 5800 K b. 0 K c. 98.6°F d. 273 K e. 2.7 K
10 marks] Question 10 [2 2 2 2 2 The Cosmic Microwave Background (CMB) is blackbody...
10 marks] Question 10 [2 2 2 2 2 The Cosmic Microwave Background (CMB) is blackbody radiation remaining from an hot phase in the universe, and currently has a temperature of 2.7K. First we will determine the current number density of CMB photons. early (a) What is the current energy density of the CMB? (b) What is the average energy of a single photon in the CMB today (at the peak of the blackbody curve)? (c) If we take this...
Cosmic background radiation. The following figure shows measurements of the energy density of the background cosmic...
Cosmic background radiation. The following figure shows measurements of the energy density of the background cosmic radiation. The graphical quantity is the spectral density as a function of the energy per unit volume according to the relationship: di / dw = cu(w) / 41 Assuming Planck's Law, estimate the temperature of the background cosmic radiation. Use that lerg = 10-7 J, kg = 1.38 x 10-23 J/K y c~ 10%m/s. -3.00 30 Wavelength (cm) 0.3 0.03 10-14 10-15 10-16 10-17...
An opaque object that emits a thermal radiation spectrum is called a “blackbody”. As the temperature...
An opaque object that emits a thermal radiation spectrum is called a “blackbody”. As the temperature of a blackbody increases, what happens to the peak wavelength of the light it radiates?
3. Calculate the blackbody temperatures (K) from the peak wavelengths given in a) through b), and...
3. Calculate the blackbody temperatures (K) from the peak wavelengths given in a) through b), and the peak wavelength (m) from the temperatures given in c) through d): a. 180 nm (surface of hot star) b. 2.4 microns (surface of cold star) c. 60 K (interstellar cloud) d. 3 K cosmic microwave background radiation left over from the Big Bang
The temperature of the cosmic microwave background (CMB) varies with time. If the peak of the...
The temperature of the cosmic microwave background (CMB) varies with time. If the peak of the CMB was observed to be at 3.5 K, compute the wavelength at which most of the radiation would be emitted. Answer in nm.
Please make sure you give me the correct answer
13) The cosmic background radiation permeating the universe has the spectrum of a 2.7-K blackbody radiator. The energy density of deep space is 4.19 x 10-8 J/cm3 a, What is the peak wavelength of this radiation? b, Assuming the energy density of space is from these photons, how many photons are there on average in each cubic centimeter of space?
1. [Cosmic background temperature] At present, the cosmic background radiation is at 3 K. Suppose the universe expands adiabatically (but not necessarily quasistatically). What can you say about the tem- perature of the cosmic background radiation when the total volume of the universe was one half of the present volume?
1. [Cosmic background temperature] At present, the cosmic background radiation is at 3 K. Suppose the universe expands adiabatically (but not necessarily quasistatically). What can you say about the tem-...
10 marks] Question 10 [2 2 2 2 2 The Cosmic Microwave Background (CMB) is blackbody radiation remaining from an hot phase in the universe, and currently has a temperature of 2.7K. First we will determine the current number density of CMB photons. early (a) What is the current energy density of the CMB? (b) What is the average energy of a single photon in the CMB today (at the peak of the blackbody curve)? (c) If we take this...
Cosmic background radiation. The following figure shows measurements of the energy density of the background cosmic radiation. The graphical quantity is the spectral density as a function of the energy per unit volume according to the relationship: di / dw = cu(w) / 41 Assuming Planck's Law, estimate the temperature of the background cosmic radiation. Use that lerg = 10-7 J, kg = 1.38 x 10-23 J/K y c~ 10%m/s. -3.00 30 Wavelength (cm) 0.3 0.03 10-14 10-15 10-16 10-17...
The temperature of the cosmic microwave background (CMB) varies with time. If the peak of the CMB was observed to be at 3.5 K, compute the wavelength at which most of the radiation would be emitted. Answer in nm.
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