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April 19, 2014

April 19, 2014

Posted by **Stuck** on Wednesday, July 21, 2010 at 5:39pm.

a) 6.0cm

b) 9.0cm

c) 18cm

d) 21cm"

I am very confused. What am I supposed to do?

- Physics -
**bobpursley**, Wednesday, July 21, 2010 at 7:31pmif the path length is a multiple of a wavelength, reinforcement (anti-node) occurs, if it is a odd number of half-wavelengths, it is destructive and a node results.

for instance d) Not a multiple of 6cm, but it is ...18+3 or 6*3+3 which means it is a halflength left over, destructive.

- Physics -
**Stuck**, Wednesday, July 21, 2010 at 10:27pmAh! Thank you so much!

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