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9. System of two particles Use the following information for Questions 9-11: Consider a system of two non-interacting particles in an infinite potential well with a width of L. One particle is in the ground state ($n = 1$) and the other particle is in the first excited state ($n = 2$). First, suppose the two particles are distinguishable and calculate ($\left(x_1 - x_2\right)^2$), the expectation value of ($\left(x_1 - x_2\right)^2$), where $x_1$ and $x_2$ are the positions of particle 1 and 2, respectively. Give your answer in unit of $L^2$. Answers within 5% error will be considered correct.

          9. System of two particles
Use the following information for Questions 9-11:
Consider a system of two non-interacting particles in an infinite potential well with a width of L. One particle is in the
ground state ($n = 1$) and the other particle is in the first excited state ($n = 2$).
First, suppose the two particles are distinguishable and calculate ($\left(x_1 - x_2\right)^2$), the expectation value of ($\left(x_1 - x_2\right)^2$), 
where $x_1$ and $x_2$ are the positions of particle 1 and 2, respectively.
Give your answer in unit of $L^2$. Answers within 5% error will be considered correct.

9. System of two particles
Use the following information for Questions 9-11:
Consider a system of two non-interacting particles in an infinite potential well with a width of L. One particle is in the
ground state (n = 1) and the other particle is in the first excited state (n = 2).
First, suppose the two particles are distinguishable and calculate ((x1 - x2)^2), the expectation value of ((x1 - x2)^2),
where x1 and x2 are the positions of particle 1 and 2, respectively.
Give your answer in unit of L^2. Answers within 5% error will be considered correct.

Added by Tara R.

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