Given the redshift of a galaxy is 0.440 the observed wavelength is 480 nm. What is the actual wavelength?
Q: Andromeda galaxy is the closest large galaxy and is visible to the naked eye. Estimate its…
A:
Q: Problem 3: Two stars, M and N, from the same galaxy (at the same distance from earth) are observed…
A: The both stars emit same amount of energy per unit time. Luminosity is given as L=4πR2σT4, where R…
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: An 800 nm spectral line when observed from a galaxy is shifted to 920 nm. Calculate the redshift.
A: Redshift is the process by which light from moving sources is shifted to longer wavelengths.…
Q: The spectral lines of various elements are detected in light from a galaxy in the constellation Ursa…
A: The equation for red shift is, λobs=λ1-vc
Q: Consider a 4.6-cm microwave photon. What is the momentum of the photon in kilogram meters per…
A: Momentum of Photon P= 1.44 × 10-32 Kg.m/s We know momentum of photon is given by Momentum of…
Q: If a galaxy is 9.0 Mpc away from Earth and recedes at 488 km/s, what is H0 (in km/s/Mpc)? km/s/Mpc…
A: The question above has been given from Hubble's law. This law is also known as the Hubble-Lemaitre…
Q: The universe is filled with thermal radiation, which has a blackbody spectrum at an effective…
A: Given: The temperature is T=2.7 K. The expression for peak wavelength according to blackbody…
Q: What is the total energy of a proton whose kinetic energy is 25 GeV? What is its wavelength?
A:
Q: Suppose a galaxy is moving away from Earth at a speed 0.78c. It emits radio waves with a wavelength…
A: Doppler effect is the change in frequency and wavelength of a wave due to the motion of the source…
Q: 40 Because the apparent recessional speeds of galaxies and quasars at great distances are close to…
A:
Q: What is the wavelength of the most energetic photon that can be emitted from a muonic atom with Z=1?
A: The electron on gaining energy becomes excited. They then jump from lower orbit to higher orbit. It…
Q: Edwin Hubble established the existence of separate, distant galaxies when he found __________ stars…
A:
Q: What is the recession speed of a galaxy cluster which is 50Mpc away from Earth? Is the light from…
A: Hubble Law It state that distant galaxies are moving away from our earth with a recession…
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: Recall that Hubbleʹs law is written v = H0d, where v is the recession velocity of a galaxy located a…
A: Given data: Hubble's constant (H0) = 80 km/s/Mpc Distance (d) = 800 Mpc Required: Recession velocity…
Q: 5.4 In a negatively curved universe containing only matter (2, < 1, K = -1), show that the present…
A: Given, the universe contains only matter and Ωo<1 So scale factor will be a=12ΩoΩo-1coshθ-1…
Q: ased on what you have learned about galaxy formation from a protogalactic cloud (and similarly star…
A: Dark matter do not emit any radiation The pressure of an ideal gas decreases when temperature drops…
Q: Distances to very remote galaxies are estimated based on their apparent type, which indicate the…
A: The relation of brightens of the star is inversely proportional to the square root of the distance…
Q: n. Estimate the relative velocity.
A: Given: Lo=2m L=0.75m To find: Relative velocity
Q: The Rama shift generally lies between ________ a) 100 – 1000 cm-1 b) 100 – 2000 cm-1 c) 100 –…
A: D
Q: When a distant galaxy is observed the violet hydrogen line of 410.173 nm was recorded at 610 nm.…
A: When it comes to light the Doppler effect has to be modified. Light does not require any medium 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: If we knew that a distant galaxy were 8.56 x 1021 meters away from earth, what velocity could we…
A: The velocity of a distant galaxy can be calculated using Hubble's Law. Hubble's Law states that the…
Q: A galaxy is oberverd to have emission lines of blue hydrogen lines of 434 nm. What will be the…
A: When the relative speed between observer and source gets close to the speed of light, relativistic…
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 peak intensity of the CMBR occurs at a wavelength of 1.1 mm. (a) What is the energy in eV of a…
A: Given data: The wavelength is λ=1.1 mm. Part (a) The energy can be calculated as: E=hcλ Here,…
Q: (S1) The Planck mass is mp Show that mp has dimensions of mass. (S2) The Planck time is tp = Show…
A: (S1)mp=chG12dimension of :c=LT-1h=ML2T-1G=M-1L3T-2thusmp=chG12 =LT-1ML2T-1M-1L3T-212 =M212…
Q: To get an idea of how empty deep space is on the average, perform the following calculations: (a)…
A: “Since you have posted a question with multiple sub-parts, we will solve first three subpartsfor…
Q: A galaxy is found to be receding at a velocity of 3.0 x 104 km-s-1. Calculate the distance to the…
A: Edwin Hubble discovered through observation that the Universe is expanding. Galaxies are moving away…
Q: Q No 04: When an observable is said to be con
A: Observables to be a constant of motion follows any of the following criteria. 1) let us consider an…
Q: The bright radio galaxy, 3c84, is observed to be moving away from the Earth at such high speed that…
A: Given, Wavelength of the source, λs=434 nm Wavelength of the observed light, λobv=442 nm From…
Q: The hydrogen Balmee lime Hb has a wavelength of 4.86.1 nm. It is shifted to 55.8 nm in a quasar's…
A: The expression for the red shift is,
Q: A star at a distance of 50000 light years from the center of a galaxy has an orbital speed of 100…
A:
Q: A galaxy is moving away from Earth. The "blue" hydrogen line at 434 nm emitted from the galaxy is…
A:
Q: Which of the following might you expect to be an additional consequence of the fact that galaxies…
A: Given Which of the following might you expect to be an additional consequence of the fact that…
Q: Sirius, how fast is Sirius
A: Given: Hydrogen's spectral line is 124 nm =124×10-9m Star Sirius is 133 nm=133×10-9m
Q: The rest wavelength of the Hα transition of atomic hydrogen is 656.3 nm (recall that 1 nm=10-9 m).…
A:
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: The temperature of the universe is 2.76 K. What is the wavelength of the cosmic background…
A:
Step by step
Solved in 3 steps
