How did Edwin Hubble measure the distance to the Andromeda Galaxy? He deduced it from its redshift. He measured its parallax. He used Cepheid variables in the Andromeda Galaxy. He used white dwarf supernovae in the Andromeda Galaxy.

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Q: IfA=9.9a₂+1,2ây +5.7â And B-3.3â+4ây+8.9â if 8 AB =? ifĀ =9.9â+1,2ây+5.7â and B-3.3âz +4ây +8.9a₂,…

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Q: 2. Point charges of Q₁= 50 nC and Q₂ = 30 nC are located at the points P₁(4, -2, 7) m and P₂(-3, 4,…

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