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Homework Help: Particle (infinite 1-D well)

  1. Nov 14, 2014 #1
    1. The problem statement, all variables and given/known data
    If a particle (infinite 1-D well) in ground state n =1 with an energy 1.26 eV above E=0. Whats the energy needed to get it to 3rd excited state n =4?

    2. Relevant equations

    3. The attempt at a solution
    any hints?
  2. jcsd
  3. Nov 14, 2014 #2


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    Gold Member

    You need to attempt the problem before we will help.
  4. Nov 15, 2014 #3
    Im thinking En = h2kn2/(2m) or En = n2π2ħ2/(2mL2)?
  5. Nov 15, 2014 #4
    m= 9.11E-31kg
    a=(pi2 ħ2/E2m)*12
    a= 7.22E-5eV

    I tried this
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