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Physics, 22.06.2019 06:30
What is the energy of a photon of ultraviolet radiation with a frequency of 4.4 × 1015 hz? planck’s constant is 6.63 × 10–34
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Anyone wanna talk , im in school and im bored...
English, 28.10.2020 15:40
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English, 28.10.2020 15:40
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