Suppose a particle is described by a superposition of 1-D particle in the box wavefunctions as shown as below 4₁ = √√ ² sin ( x) n 0 = 1/64/₂ + 1/24/₂ + √2/24/3 √32 Use this setup to do the problems below 1. Show that Σ|c₂|² = 1 2. Explain, in plain language, why Σ|c₂ |² = 1 12 3. Calculate for ₁, V₂, Y using L=1Â (hint: only plug in the numerical value of L once you've calculated the integral). 4. Use your result from problem 3 to calculate for > and explain why the answer is sensible

Modern Physics
3rd Edition
ISBN:9781111794378
Author:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Publisher:Raymond A. Serway, Clement J. Moses, Curt A. Moyer
Chapter6: Quantum Mechanics In One Dimension
Section: Chapter Questions
Problem 28P
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1-30 - Superposition Principle
Suppose a particle is described by a superposition of 1-D particle in the box
wavefunctions as shown as below
1. Show that Σc|²
12
4₁ = √√ ² sin(x)
n
0 = 1/64
с = 1
-4₁
√6 1
Use this setup to do the problems below
+
7/24/2+1/2/24/3
√32
√23
2. Explain, in plain language, why
Σ c
| Σ |c₂|² = ¤ 1
22
3. Calculate <x> for ₁, ₂, ³ using L=1Â (hint: only plug in the numerical value of
L once you've calculated the integral).
4. Use your result from problem 3 to calculate <x²> for > and explain why the
answer is sensible
Transcribed Image Text:1-30 - Superposition Principle Suppose a particle is described by a superposition of 1-D particle in the box wavefunctions as shown as below 1. Show that Σc|² 12 4₁ = √√ ² sin(x) n 0 = 1/64 с = 1 -4₁ √6 1 Use this setup to do the problems below + 7/24/2+1/2/24/3 √32 √23 2. Explain, in plain language, why Σ c | Σ |c₂|² = ¤ 1 22 3. Calculate <x> for ₁, ₂, ³ using L=1Â (hint: only plug in the numerical value of L once you've calculated the integral). 4. Use your result from problem 3 to calculate <x²> for > and explain why the answer is sensible
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