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Home Q & A Board Science-Related Homework Help Physics
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princess001 princess001
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11 years ago
1. How many photons with a wavelength of 532 nm are released each second by a 5.0mW laser?

2. When welders are working on pipelines, they use filters that block out UV light. Why is this safety precaution necessary?
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bio_manbio_man
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11 years ago
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princess001 Author
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#2
11 years ago
Thanks bio man
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