Sagot :
Answer:
Explanation:
The ultraviolet rays that cause sunburn are called UV-B rays. They have a wavelength of approximately 300 nanometers (3.0 x 10-7 m).
Answer:
The ultraviolet rays that cause sunburn are called UV-B rays. They have a wavelength of approximately 300 nanometers (3.0 x 10-7 m). What is the frequency of a UV-B ray?
Explanation:
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