AngularMomentumAndSpin_Pretest

# AngularMomentumAndSpin_Pretest - Boulder ψ n lm r θ φ 29...

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Angular Momentum and Spin Pretest Name: _______________________________________ CU ID: ____________________ In the following questions, we will use quantum states made up of the hydrogen energy eigenstates: The energy of one of these states is: where E 1 is the energy of the ground state (-13.6 eV). For simplicity, we will leave out the coordinates and use: Q1: Consider the election in a hydrogen atom to initially be in the state: a) What is the probability of measuring the energy of this state and obtaining E 2 ? A. 1 3 at t=0 but something different at t>0 B. 1 3 at t=0 but something different at t>0 C. 1 3 always D. 1 3 always E. Something else. b) Explain your answer. © 2010 Steve Goldhaber and the Physics Education Group University of Colorado at

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Unformatted text preview: Boulder ψ n lm r , θ , φ ( 29 = R n 1 r ( 29 Y 1 m , ( 29 E n = E 1 n 2 nlm = R n 1 Y 1 m Ψ t = ( 29 = 1 3 R 10 Y + 1 3 R 21 Y 1 1 + 1 3 R 32 Y 2 1 Q2: Consider the electron in a hydrogen atom to be in the same initial state. a) what is the probability of measuring the ˆ L z of this state and obtaining h ? A. 1 3 at t=0 but something different at t>0 B. 1 3 at t=0 but something different at t>0 C. 1 3 always D. 1 3 always E. Something else. b) Explain your answer © 2010 Steve Goldhaber and the Physics Education Group University of Colorado at Boulder...
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AngularMomentumAndSpin_Pretest - Boulder ψ n lm r θ φ 29...

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