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The question im struggling is number 12 (c)(ii) which starts on page 14, but my part is on 16, the very last question of the paper

http://www.hinchingbrookeschool.net/science/documents/2864June2003.pdf [Broken]

I want to calculate the length of a box where n = 3

[tex]E_{n} = n^{2}E_{1}[/tex]

Therefore for the n = 3 quantum state, E = 1.215x10^-21

But the markscheme goes into somthing completely different, so I must be taking the wrong route. If I work it through I get the wrong answer

Page 32 ON Mark Scheme:

http://www.hinchingbrookeschool.net/science/documents/2003JuneMS.pdf [Broken]

Can someone explain my misunderstanding of the physics involved here?

Thanks :)

http://www.hinchingbrookeschool.net/science/documents/2864June2003.pdf [Broken]

I want to calculate the length of a box where n = 3

[tex]E_{n} = n^{2}E_{1}[/tex]

Therefore for the n = 3 quantum state, E = 1.215x10^-21

But the markscheme goes into somthing completely different, so I must be taking the wrong route. If I work it through I get the wrong answer

Page 32 ON Mark Scheme:

http://www.hinchingbrookeschool.net/science/documents/2003JuneMS.pdf [Broken]

Can someone explain my misunderstanding of the physics involved here?

Thanks :)

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