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doit_the_clown doit_the_clown
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7 years ago
The H line in hydrogen consists of photons with energies of 2.55 eV, or 4.089 × 10–19 Joules.  What is the wavelength of these photons?
   A)  642 nm    B)  486 nm    C)  321 nm    D)  218 nm
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Discovering the Universe

Discovering the Universe


Edition: 7th
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Only two things are infinite, the universe and human stupidity, and I'm not sure about the former.

Albert Einstein
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hyponoticahyponotica
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7 years ago
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