13. The following figure shows two parallel plates. The graph indicates the potential at points between the two plates, with V₂ = 20 V at x₂ = 0.40 m and V₁ = 15 V at x1 = 0.30 m. An electron is released from rest at x₁, and that release point and the plate locations are aligned with the graph. What is the magnitude of the electric force (N) on the electron?

(A)
(B)
(C)
(D)
(E)

14. In the figure, the switch is closed at time t = 0 on a capacitor with capacitance C = 5.00 μF. The resistors are R1 = 2.00 Ω and R2 = 4.00 Ω and the circuit has a 50.0 V ideal battery. At what time (s) is the charge on the capacitor equal to 0.250 of the final (equilibrium) charge? (A) (B) (C) (D) (E)

15. An alpha particle (q = +2e, m = 6.644× kg) travels in a circular path of radius 9.00 cm in a uniform magnetic field with B = 1.20 T. Through what potential difference (volts) was it accelerated (from rest) to have the kinetic energy required for this path? (A) 7.9×103, (B) 5.3×104, (C) 2.8×105, (D) 6.7×106, (E)3.1×107.

16. The figure gives the magnitude of the magnetic field inside and outside a wire with a uniformly distributed current: T. What is the current (mA)? (A) 5.5, (B) 10.0, (C) 50.2, (D) 30.0, (Ε) 75.0. B Bmax0 r (mm) 5.00

17. The figure shows the direction of the current through three inductors. Here are the currents as a function of time t: i1 = 5t； i2 = 5t； i3 = 5/t. In which inductor is the induced emf upward in the figure? (A) 2 and 3, (B) 1 and 3, (C) 3 only, (D) all three, (E) none.

18. The figure shows a thin film (in the middle) with different materials on either side: n₁ = 1.40, n₂ = 1.50, and n₃ = 1.60. We send in a ray of light that is perpendicular to the two parallel surfaces. In air, that light has a wavelength of 800 nm. For some values of thickness L, the reflections to the left undergo fully destructive interference. What is the second smallest value of L that gives that result? Answer in nanometers. (A) 1200, (B) 180, (C) 400, (D) 75, (E) 533.

19. If the momentum of an electron is 4.00 MeV/c, what is the electron's kinetic energy (MeV)? Electron's rest energy = 0.511 MeV. (A) 1.86, (B) 0.67, (C) 1.09, (D) 3.52, (E) 2.34.

20. Light of wavelength 100 nm shines on a metal with a work function of 3.00 eV. What is the stopping voltage (V)? (A) 9.40, (B) 0.145, (C) 6.02, (D) 7.15, (E) 1.33.

1 細胞膜靜止膜電位(resting membrane potential)最主要是由下列何者所決定?(A)細胞膜上之蛋白質受器(membrane receptors)多寡(B)細胞膜兩側通透離子(permeable ions)之濃度(C)細胞膜兩側水分子分佈關係(D)細胞膜兩側無法通透離子(impermeable ions)之濃度

2 下列有關 Basal ganglia 的神經訊息傳導之敘述,何者正確? (A) Corpus striatum (包含 caudate 與 putamen)為接收來自 cerebral cortex 的運動計畫訊息之主要結構 (B) Substantia nigra 為接收來自 cerebral cortex 的運動計畫訊息之主要結構 (C) Globus pallidus 為接收來自 cerebral cortex 的運動計畫訊息之主要結構 (D) Basal ganglia 的傳出訊息由 caudate 發出,傳入thalamus,再由 thalamus 傳至 cerebral cortex 的運 動區

3 下列有關 adrenal medulla 之敘述,何者正確?(A) Adrenal medulla 所釋放之物質與交感神經末梢釋放之物質,具有完全相同的功能(B) Adrenal medulla 主要釋放 corticosteroids(C) Adrenal medulla 為 stress response 之重要機制(D) Adrenal medulla 受副交感神經支配

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