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natka813 [3]
3 years ago
14

Help ASAP! Everything on screenshot

Physics
1 answer:
BARSIC [14]3 years ago
7 0

Answer:

For the first one, its B) cities B and C

I'm not so sure, but I hope this helps.

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An electron in an unknown energy level of a hydrogen atom transitions to the n=2 level and emits a photon with wavelength 410 nm
lyudmila [28]

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7 0
3 years ago
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