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April 16, 2014

April 16, 2014

Posted by **Jennie** on Thursday, December 8, 2011 at 10:37pm.

1 foot

2 feet

3 feet

4 feet

5 feet

6 feet

7 feet

8 feet

9 feet

10 feet

12 feet

18 feet

And how do you find this out>?

- physics -
**drwls**, Friday, December 9, 2011 at 3:09amA wavelength of 1, 2 or 3 feet will allow there to be constructive interference at the two locations. That corresponds to 6, 3 or 2 wavelengths difference between the two locations.

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