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Earth Sciences 10 Online
OpenStudy (dragscope):

How many compressions and rareafractioins does it take to make a wavelenght? 1. It takes 9 compressions and 1 rarefactions. 2. It takes 4 compressions and 4 rarefactions 3. It take 1 compression and 1 rarefaction. 4. None of the above are correct.

OpenStudy (suenahelpz):

Hi, do you still need help? ;w;

OpenStudy (black_eagle):

I think 3. It takes1 compression and 1 rarefaction. |dw:1465164253872:dw|

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