Ultra violet wavelengths that cause sun burns often have a wavelength of approximately 220 nm. What is the frequency of
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Ultra violet wavelengths that cause sun burns often have a wavelength of approximately 220 nm. What is the frequency of
Ultra violet wavelengths that cause sun burns often have a wavelength of approximately 220 nm. What is the frequency of one of these waves? O 1.4 x 10^15 Hz O 66 Hz O 7.3 x 10^-16 Hz 0 9.0 x 10^9 Hz
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