Question
If a quasar is generating 10,000 times more luminosity than a galaxy, how many times farther away would it be if it appeared to be the same brightness as the galaxy?
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A quasar has the same brightness as a galaxy that is seen in the foreground 2 Mpc distant. If the quasar is 1 million times more luminous than the galaxy, what is the distance of the quasar?
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