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"why is 21-cm radiation the best way to map the spiral arms in the milky way? "
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Physics, 22.06.2019 15:00, tanaemichel
Sodium chloride, nacl, is formed when a sodium atom transfers its electron to a chlorine atom. the difference in charge between the two atoms creates a(n) attraction that bonds them together.
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Physics, 22.06.2019 21:00, thanitoast84
Ais a machine that makes work easier when a single force is applied. a simple machine b compound machine c endangered machine d complex machine
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Physics, 23.06.2019 02:30, rhaquan66766
If frequency goes up, what happens to wavelength? does it get shorter or longer?
Answers: 2
"why is 21-cm radiation the best way to map the spiral arms in the milky way? "...
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