A supernova in a distant galaxy is observed to be having an absolute magnitude of -19 and an apparent magnitude of 17. Estimate the distance to the galaxy.
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Q: a. What voltage is involved in a 1.44-kW short circuit through a 0.100- resistance?
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Q: If the radius of a calcium ion is 0.19 nm, how much energy does it take to singly ionize it? Give…
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