Homework Help: science

Posted by Erika on Monday, May 2, 2011 at 9:56pm.

Which radiation causes cancer? I think it is UV radiation, but I'm not sure.
Also,
A wave goes up and down 5 times in 10 seconds. what is the frequency of the wave in cycles per second (Hertz)

science - drwls, Monday, May 2, 2011 at 10:31pm
Ultraviolet waves shorter than about 350 nm can cause skin cancer.

Frequency (in Hz) equals 1/Period, and in this case the period is 2 seconds.

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