資訊推薦

• 7.(　) 有兩個相等的正電荷(以Q表示)其距離為r時，他們之間相互作用力的大小以F表示。假設距離不變，而改變其電性或電量，則下列哪一個靜電力圖是對的？(A) (B) (C) (D)
• 6. The density of ice is 0.920 g/cm3 while that of sea water is 1.025 g/cm3. What fraction of an ice
• 8. A star radiates uniformly in all directions. At a distance of 5.0 ✖ 1012m from the star, the inte
• 9. The focal length of a camera lens is 20.0 cm. How far from the lens should the subject for the ph
• 10. Two different samples have the same mass and temperature. Equal quantities of energy are absorbe
• 12. The angular velocity vector of a spinning body points out of the page. If the angular accelerati
• 11. A block whose mass m is 650 g is fastened to a spring whose spring constant k is 65 N/m. The blo
• 34.( )進行「力的測量」實驗時，施加於彈簧的力F與彈簧伸長量X的關係，如圖所示，下列敘述何者正確？　(A)伸長量X與受力F不成正比，不能用來測力的大小　(B)當施力介於20～60公克重時，才可用此
• 20.( )有一艘海底探測船，若以等速向西行駛，每隔一段時間利用聲納探測海底深度一次，其回聲接收時間依序為20 秒、30 秒、40 秒、30 秒、5 秒、20 秒，則海底地形應為下列何者？  (A)
• 13. A boy pulls a wooden box along a rough horizontal floor at constant speed by means of a forceas
• 64. Which of the following statements is true about the following electrochemical cell?(A) The cell
• 63. Which of the following statements are true? A catalyst can act in chemical reaction to: I. Lower
• 35.( )一U形管內，裝有甲、乙、丙三種互不相溶的液體，平衡時如圖所示，其中甲液柱長度與丙液長度相等，d點為丙液柱的中間點，則液中各點的壓力大小關係，何者正確？ (A) e＝f (B) c＝d (C
• 13.設X、Y、Z分別代表三種相異之元素，對以下之均衡化學反應式：XZ2 ＋ 4Y → 2甲 ＋ X而言，依據道耳吞之原子說，甲的化學式為下列何者？(A) YZ　(B) YZ2　(C)Y2Z　(D)
• 65. Examine the phase diagram for the substance Bogusium (Bo) and select the correct statement. (A)
• 73. The structure below is the repeating unit of a (A) homopolymer formed by an addition reaction. (
• 14. The inertia of a body tends to cause the body to:(A) speed up (B) slow down (C) resist any chang
• 15. A thin-walled hollow tube rolls without sliding along the floor. The ratio of its translational
• 26.在下列四種條件下進行雙氧水分解實驗，請問 何者產生氣泡的速率最快？  (A) (B) (C) (D)
• 31. Two stationary tuning forks (350 and 352 Hz) are struck simultaneously. The resulting sound is o
• 67. Adipic acid contains 49.32% C, 43.84% O, and 6.85% H by mass. What is the empirical formula?(A)
• 66. A 0.20 M solution of MgSO4 has an observed osmotic pressure of 6.0 atm at 25°C. Determine the ob
• 69. When the following equation C2H5OH + O2⇌ CO2 + H2O is balanced, what are the coefficients?(A) 2,
• 68. On a new temperature scale (°L), water boils at 155.00°L and freezes at –10.00°L. Calculate the
• 70. To form a buffer solution with pH = 9.0, how many moles of NH4Cl should be added to 3.0 L of 0.2