Alienchild239
25.12.2021 •
Physics
The H line in Calcium is normally at 396.9 nm. However, in a star's spectrum it is measured at 398.1nm. How fast is the star moving and is it moving towards the Earth or away from the Earth
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Ответ:
The Louisiana Purchase eventually doubled the size of the United States, greatly strengthened the country materially and strategically, provided a powerful impetus to westward expansion, and confirmed the doctrine of implied powers of the federal Constitution.