A galaxy is observed to be at 10.0 Mpc from Earth. If it is receding at 520 km/s, calculate the Hubble's constant.
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Q: If a galaxy is 10.0 Mpc away from Earth and recedes at 520 km/s, what is Hubble's constant?
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- What is the redshift z of a galaxy 186 Mpc away from us? Note: Assume a value of the Hubble constant of 70.0 km/s/MpcCertain spiral galaxy is 8.6 Mpc away from us. How fast in km/s is this galaxy moving away from us? Note: Assume a value of the Hubble constant of 69.1 km/s/MpcIf a galaxy is 9.0 Mpc away from Earth and recedes at 488 km/s, what is H, (in km/s/Mpc)? | km/s/Mpc What is the Hubble time (in yr)? | years How old (in yr) would the universe be, assuming space-time is flat and the expansion of the universe has not been accelerating? years How would acceleration change your answer? O If the expansion of the Universe has been accelerating, the Universe could be substantially younger than the value entered above. O If the expansion of the Universe has been accelerating, the Universe could be substantially older than the value entered above. Need Help? Read It
- Need homework help An object is measured to be at a distance of 20 Megaparsecs away from Earth. Using a currently accepted value of the Hubble constant, calculate its expected velocity away from Earth due to cosmic expansion.If a galaxy is 18 Mpc from Earth and the Hubble constant is 70 km/s/Mpc, what is the recession velocity of the galaxy (in km/s)? A galaxy is receding from Earth at a speed of 300 km/s and the Hubble constant is 70 km/s/Mpc. What is the distance to the galaxy (in Mpc)?The area of the event Horizon of a black hole is 4tRg². Use the Schwarzschild metric to verify this. (Please answer in detail or skip)
- 5) The recessional velocity of a galaxy is found to be 0.52c. Calculate the redshift. (2You find a small satellite galaxy orbiting 66 kpc from the center of a larger galaxy at a speed of 210 km/s. What is the total mass of the galaxy-satellite galaxy system? (Give your answer in terms of MSun.)Copper has a conductivity of 5.8 x 10^7 Siemens/m. A 0.5 volt amplitude, 10 MHz wave travelling in the z-direction in a copper slab has a time-averaged power of: # 300 х ехp(-96х10^3 x z)az Watts/m^2 # 300 х ехp(-96х10^-3 x z)az Watts/m^2 # 300 x exp(-96x10^2 x z)az Watts/m^2 # 300 х ехp(-96х10^-2 x z)az Watts/m^2 # 150 x exp(-96x10^3 x z)az Watts/m^2 # 150 x exp(-96x10^-3 x z)az Watts/m^2 # 150 x exp(-96x10^2 x z)az Watts/m^2 # 150 x exp(-96x10^-2 x z)az Watts/m^2 #75 х еxp(-96х10^3 x z)az Watts/m^2 # 75 x exp(-96x10^-3 x z)az Watts/m^2 #75 х еxp(-96х10^2 x z)az Watts/m^2 #75 х ехp(-96х10^-2 х z)az Watts/m^2
- why is it difficult to measure the Hubble constant?Certain spiral galaxy is 9.9 Mpc away from us. How fast in km/s is this galaxy moving away from us? Note: Assume a value of the Hubble constant of 71.1 km/s/MpcSuppose you have obtained spectra of several galaxies and have measuerd the observed wavelength of the H-Alpha line (rest wavelength = 656.3 nm) to be Galaxy 1: 658.1 nm. Galaxy 2: 667.1 nm. Galaxy 3: 677.6 nm. Assuming a Hubble Constant of 72.5 km/s/Mpc, calculate the distance to each of these galaxies (answer in Mpc)