2003CAP Prize Exam加拿大高中物理大獎賽真題免費下載

歷年CAP High School Prize Exam加拿大高中物理大獎賽

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2003 CAP Prize Exam真題免費下載

共計3小時考試時間

此套試卷由兩部分組成

25道選擇題

以及3道簡答題組成

每道大題含有不同數(shù)量的小題

完整版下載鏈接見文末

部分真題預覽：

Data:

Speed of light c =3.00 × 10⁸m/s

Gravitational constant G =6.67 × 10^?11N · m²kg²

Radius of Earth R_E=6.37× 10³ Km

Mass of Earth M_E=6.0× 10^24?Kg

Radius of Earth's orbit R_ES=1.50× 10^8?Km

Acceleration due to gravity g =9.80m/s²

Fundamental charge e =1.60× 10^?19 C

Mass of electron me =9.11 × 10^?31kg

Mass of proton mp =1.67 × 10^?27kg

Planck’s constant h = 6.63x10^-34 J·s

Coulomb’s constant 1/(4πε0) = 8.99x10⁹ N·m²/C²

Speed of sound in air v_s=343m/s

Energy conversion 1eV=1.6?x 10^-19J

Part A: Multiple Choice

1)A parallel-plate capacitor holds charge q and is not connected to anything. The distance between the plates is now increased. The electrical energy stored on the capacitor

1. decreases;
2. remains the same;
3. increases;
4. can do any of the above, depending on how the capacitance changes

2)When a mechanical or electromagnetic wave goes from medium to another, it undergoes a change in

1. amplitude only
2. both speed and wavelength
3. speed only
4. wavelength only

3)Two idential rooms in a perfectly insulated house are connected by an open doorway. The temperature in the two rooms are maintained at different values. The room which contains more air molecules is

1. the one with the higher temperature;
2. the one with the lower temperature;
3. the one with the higher pressure;
4. neither, since both have the same volume

4)Three airplanes, A,B and C, each release an object from the same altitude and with the same initial speed v₀ with repsect to the ground. At the moment their object is released, A is flying horixontslly, B is flying upward at an angle θ with repect to the horizontal, and C is flying at the same angle θ as B but downward with respect to the horizontal. Assuming the gournd to be horizontal and neglecting any aerodynamical effect, the speeds v at which the three objects will hit the ground satisfy

1. vA=vB<vC
2. vA>vB=vc
3. vA<vB<vC
4. vA=vB=vC

5)Two identical conducting spheres, A and B, carry equal electric charge. They are separated by a distance much larger than their diameter and exert an electrostatic force F on each other. A third identical conducting sphere C is initially uncharged and far away from A and B. Sphere C is then brought briefly into contact with sphere A, then with sphere B, and finally removed far away. The electrostatic force between A and B is now

1. 3F/8
2. F/2
3. F/4
4. F/16

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