9. Consider the quantum state l = 3, m_l = 3. What is the angle (in radians) between the angular momentum and the +z direction? (A) (B) (C) π/6 (D) π/2 (E) 0

10. An electric dipole consists of two opposite charges, each with mass m and charge ±q (respectively), and the two charges are separated by a distance d. Under a uniform external electric field E, the electric dipole performs simple harmonic oscillation if the angle between the dipole and E is small. The period of this oscillation is (A) (B) (C) (D)(E) none of the above.

9. Consider the quantum state l = 3, m_l = 3. What is the angle (in radians) between the angular momentum and the +z direction?
(A)
(B)
(C) π/6
(D) π/2
(E) 0

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