2002CAP 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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2002 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

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

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

Permeability of free space?μ_0?= 4π × 10^?7N/A²

Speed of sound in air v_s=343m/s

Index of refactuin of water n_w=1.33

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

Part A: Multiple Choice

1)A little girl is holding? a helium-filled balloon on a string while riding in a closed elevator going down a very tall building at constant speed. The elevator shaft is maintained under vacuum. Suddenly the elevator cable snaps, sending the elevator into free fall. In her surprise the girl lets go of the string. She is even more surprised to see

1. the balloon rising.
2. the balloon floating downward.
3. the balloon remaining stationary
4. the balloon bouncing slowly between the floor and the ceiling

2)A demonstration apparatus sits on a table in the lab. It consists of a metal track (shown as a thick solid line in the figure below) along which a perfectly spherical marble can roll without slipping. In one run, the marble is released from rest at a height h above the table on the left section, rolls down one side and then up the other side without slipping, briefly stopping when it has reached h1. Assuming the table to be horizontal and neglecting air drag as well as any energy loss due to rolling,

1. h₁<h always, because the friction that keeps the ball rolling must dissipate energy.
2. h₁=h, since total mechanical energy is conerved
3. h₁=h only if tilt angles ? and θ are equal
4. h₁=h only if tilt angle ? is larger than?θ

3)In the movie Jurassic Park, as a jeep is being pursued by a dinosaur, one can see the animals in the jeep's side rear-view mirror on which is printed:"Objects in mirror are closer than they appear." Then,

1. the mirror is flat
2. the mirror is concave
3. the mirror is convex
4. the mirror could be either convex or concave

4)a lump od sticky chewing-gum with mass m moves at speed v toward another lump of mass M at rest. They collide and stick together, both moving at speed V. Nothing else is known about the conditions under wihch the collision takes place. Which of the following statements is the most correct?

1. Neither total kinetic energy nor total linear momentum can be conserved
2. This is an elastic collision in which both total kinetic energy and total linear momentum are conserved; the final speed is V=v/2
3. This is an inelastic collision, and in such collisions, total linear momentum is always conserved; the final speed is V=v/4
4. ?This is an inelastic collision in which total linear momentum is conserved, provided no external force can deliver an impulse to the system during the collision

5)According to the Archimendes principle,

1. a body immersed in a fluid experiences an upward force equal to the weight of the fluid it displaces
2. a body immersed in a fluid experiences and upward force equal to the weight of the object
3. a body immersed in a fluid displaces an amount of fluid equal to the volume of the body
4. a body immersed in a liquid floats only if its density is smaller than that of the liquid

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