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Question number 23 asks, how far away is a galaxy moving at 3 ,500 kilometers per second? the way to find the distance to this galaxy is to use hubble's law, which states that velocity is equal to the hubble parameter times the distance of the galaxy.
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Now, for our condition, we have the hubble parameter and the velocity of this galaxy that is about.
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Are 3 ,500 kilometers per second.
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And the hubble parameter is measured to be at 71 kilometers per second per megaparsec.
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But we need to know the distance.
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The way we can find that is to rearrange our equation to get v over h.
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And that will give us our distance.
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So we have a few parameters here.
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Let's divide them to see what our distance ends up being...