61. Select the answer with the correct number of decimal places for the following sum: 13.914 cm + 243.1 cm + 12.00460 cm =
(A) 269.01860 cm
(B) 269.0186 cm
(C) 269.019 cm
(D) 269.02 cm
(E) 269.0 cm

57. What is the electric flux through a surface in between two parallel planes shown in the figure if w = 2 cm, l = 5 cm, E = 500 N/C and θ = 30°? (A) 0.52 N⋅m2 /C (B) 0.26 N⋅m2 /C (C) 0.81 N⋅m2 /C (D) 0.43 N⋅m2 /C (E) 0.36 N⋅m2 /C

58. A solenoid with 200 turns of copper wires is operated by a 1000 V power supply and must be 25 cm long. What is the magnitude of magnetic field that is created in the solenoid? (The resistance of Cu wire is 0.2 Ω and the permeability T⋅m/A) (A) 5.03 T (B) 3.21 T (C) 7.84 T (D) 4.58 T (E) 4.36 T

59. For a convex mirror with radius of curvature R = 10 cm, if an object is placed 15 cm in front the mirror, what is the magnification of the image and is it a real or virtual? Upright or inverted? (mirror’s equation: 1/p+1/q = 2/R) (A) 3.75 cm (virtual behind mirror) and M = 0.25, inverted (B) 7.50 cm (virtual behind mirror) and M = 0.5, upright (C) 3.75 cm (real in front mirror) and M = 0.5, inverted (D) 7.50 cm (real in front mirror) and M = 0.25, inverted (E) 3.75 cm (virtual behind mirror) and M = 0.25, upright

複選題60. For a bi-concave thin lens, the radii of curvature are 10 and 20 cm. If an object is placed 15 cm in front of the mirror, what is the magnification of the image and is it a real or virtual? Upright or inverted? (thin lens’ equation: 1/p+1/q = (n−1)(1/R1−1/R2), the refractive index of glass is 1.5). (AB) 9.72 cm (virtual behind mirror) and M = 0.64, inverted (AC) 11.64 cm (virtual behind mirror) and M = 0.58, inverted (AD) 10.91 cm (virtual in front mirror) and M = 0.73, upright (AE) 8.69 cm (real in front mirror) and M = 0.25, inverted (BC) 12.45 cm (virtual behind mirror) and M = 0.53, upright (BD)一律送分

62. Detection of radiation by a Geiger-Müller counter depends on ______. (A) the emission of a photon from an excited atom (B) the ability of an ionized gas to carry an electrical current (C) the emission of a photon of light by the radioactive particle (D) the ability of a photomultiplier tube to amplify the electrical signal from a phosphor (E) the detection of the sound made by decay particles

63. Please calculate the ΔS if ΔHvap is 66.8 kJ/mol, and the boiling point is 83.4°C at 1 atm, when the substance is vaporized at 1 atm. (A) -187 J/K mol (B) 187 J/K mol (C) 801 J/K mol (D) -801 J/K mol (E) 0

64. Which of the following values is based on the Third Law of Thermodynamics? (A) ΔH°f = 0 for Al(s) at 298 K (B) ΔG°f = 0 for H2(g) at 298 K (C) (D) qsys ＜ 0 for H2O(l) → H2O(s) at 0°C (E) None of these

65. What are the values of bond order belonging to , respectively? (A) 1.5, 2.5 (B) 2.5, 1.5 (C) 2, 3 (D) 3, 2 (E) 2, 2

66. The lattice energy of NaI(s) is -686 kJ/mol, and its heat of solution is -7.6 kJ/mol. Calculate the hydration of energy of NaI(s) in kJ/mol. (A) -678 (B) -694 (C) +678 (D) +694 (E) +15.2

67. According to molecular orbital, which of the following molecules is diamagnetic? (A) HF (B) O2 (C) NO (D) (E)