Answer:
Star formation occurs most rapidly in the spiral arms, where the density of interstellar matter is highest.
The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of an atom. It is identical to the charge number of the nucleus. The atomic number uniquely identifies a chemical element. In an uncharged atom, the atomic number is also equal to the number of electrons.
It’s b all objects with mass experience gravitational attraction I hope this helps
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I think it may be c, 1.7 v. I work with electricity a lot.
