Doppler broadening of spectral lines. Given that K= (1+vx/c), then Arms is: O a. b. KT/mc
Q: 12) Estimate the wavelength of the radiation emitted by an interstellar cloud of 4000 K. nts)
A: Interstellar clouds are made of gas and dust particles that are left over after a star dies. When an…
Q: 20.) Twinkle Twinkle. A stable star of radius R has a mass density profile ρ(r)=α(1−r/R). Here,…
A: Given that:1. Radius of the stable star 2. Density profile of the star 3.
Q: 3. The formula for Hubble's Law using the velocity v is valid only for velocities much smaller than…
A: Given data: Redshift z=4.89. The recessional velocity is given as, v=cz+12-1z+12+1 Here, c is the…
Q: 656 nm emitted by electrons dropping from the n = 3 to the n = 2 orbital in hydrogen. The hydrogen…
A:
Q: 10. An proton-antiproton pair is produced by a 1.95 x 10° MeV photon. What is the kinetic energy of…
A: Kp'= 1950 - [55.35 + 938] - 938 Kp' = 1950 - [993.35] -938 Kp' = 1950 - 1931.35 Kp'= 18.65 Mev
Q: Rev5 Phys 1403 Stellar Magnitudes and Parallax Since the minimum brightness visible will be…
A: (1) Given: The magnitude of Mizor is 2.4. The brightness of Mizor in companion to Alcor is 4.37…
Q: 9. In an experiment to measure the mass of the negative K meson (kaon) the photon energy for the…
A: Let Z be defined as the atomic number of the nucleus around which Kaon is moving in a circular…
Q: The CMB contains roughly 400 million photons per m³. The energy of each photon depends on its…
A: The wavelength is 0.0011 m. The energy of a photon is 1.807×10-22 J.
Q: Radial wave functions. Explain briefly
A: An orbital may be a function called a wave function that describes an electron in an atom. Radial…
Q: radio lines of neutral Hydrogen (apart from H91α) What does H91α meaning for?
A: Introduction: The Balmer series is the name given to a series of spectral emission lines of the…
Q: Why it is 9-3I1+.. instead of adding up all of them
A: The algebraic sum of all the voltages in a closed loop is zero.
Q: We receive today the light from a distant galaxy and from its spectrum we conclude that it took 400…
A: Option c is correct That galaxy is moving away from us, so today it is more distant form us than 400…
Q: At rest hydrogen has a spectral line at 143 nm if this line is observed at 138nm for the star Sirius…
A: Simple problem from special theory of relativity and specifically it's a problem of Doppler's…
Q: You plead innocent to a charge of running a red light, claiming that the light was doppler-shifted…
A: Given: The wavelength of red light is λ0 = 0.7 x 10-6 m The wavelength of green light is λ = 0.55 x…
Q: 7) The H-alpha line from a star is observed to be 850 nm. Estimate its redshift
A:
Q: The matter density in the Universe today is Pm = kg m-3. What would 2.7 x 10-27 be the value of the…
A:
Q: The correct answer is 2.18E-1. Can you show how to get this?
A: Write the expression for the intensity and substitute the corresponding values. I=P4πd2I=5×106…
Q: Calculate minimum and maximum energies that can be associated with IR?
A: The IR or Infra red light lies in the wavelength region 700 nm - 1 mm. The energy corresponding to…
Q: Elin Problem 37: Suppose you were browsing the internet and came across a website that claimed the…
A: Required : The correct option.
Q: 5. The nearest star to the Sun is Proxima Centauri, a red dwarf star at a distance of 4.243 ly. Its…
A: The term apparent magnitude is used to calculate the brightness of the stars or other astronomical…
Q: The wavelength of the peak of the blackbody distribution was found to follow Wein’s Displacement…
A:
Step by step
Solved in 3 steps
- An interstellar cloud is observed at a wavelength of 2.898 µm. Estimate the temperature of the cloud.If a star has a surface temperature of 25,000 K (2.50 ✕ 104 K), at what wavelength (in nm) will it radiate the most energy? nm Is this a cool or hot star? (Give your answer relative to the Sun.) coolhotThe density of the universe is a. equal to the critical density if the universe is closed. b. equal to the critical density if the universe is flat. c. greater than the critical density if the universe is flat. d. greater than the critical density if the universe is open. e. none of the above.