Physics, 16.05.2021 22:50 meiyrarodriguez
the ultraviolet rays that cause sunburn are called UV-B rays, and have a wavelength of about 3.0 x 10^-7 m. What is the frequency of a UV-B ray?
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the ultraviolet rays that cause sunburn are called UV-B rays, and have a wavelength of about 3.0 x 1...
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