2005CAP 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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2005 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

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

Part A: Multiple Choice

1)A Child throws a ball toward the front end of an approaching train. The collision between the ball and the train is perfectly elastic. Let v be the speed of the ball with respect to the train and V its speed with respect to the ground. If the labels "i" and "f" refer to those speeds just before and just after, respectively, the ball hits the train, then

1. vi=vf and Vi<Vf
2. vi<vf and Vi<Vf
3. vi>vf and Vi<Vf
4. vi=vf and Vi>Vf

2)A physics textbook of mass m rests flats on a horizontal table of mass M places on the ground. Let N_a→b be the contact force exerted by body "a"on body "b". According to Newton's 3rd Law, which of the following is an action-reaction pair of forces?

1. mg and N_table→book;
2. (m+M)g and N_table→book
3. N_{ground→table} and Mg+N_book→table
4. ?N_{ground→table}and N_{table→ground}

3)At some time t, two identical balls, A and B, are set rolling without slipping at the same speed from one end of two tracks which are identical with the same horizontal length, except that track B has a dip in the path of ball B, as shown in the figure. The straight portions of the tracks are horizontal. Gravity is uniform throughout. Which ball reaches the other end first?

1. Ball A
2. neither, since both arrive at the same time
3. ball B
4. ball A, but only if the dip is deep enough

4)To a good approximation, Earth and Jupiter move around the Sun n circular orbits of 1.49 ×10⁸ km and 7.79 ×10⁹km radius, respectively. What is the maximum error that? can arise in the prediction of solar eclipse times(as observed from Earth) on Jupiter caused by one of its moons if one fails to take into account the variation of the relative position of the two planets?

1. 2.6 ×10³s
2. 3.1 ×10³s
3. 5.0 ×10²
4. 9.9 ×10²s

5)Experiment shows that two perfectly neutral parallel metal plates seperated by a small distance d, attract each other via a very weak force, known as the Casimir force. The force per unit area of the plates, F, depends only on the Planck constant h, on the speed of light c, and on d. Which of the following has the best chance of being correct for F?

1. F =hc/d²;
2. F=hc/d⁴;
3. F=hd²/c;
4. F=d⁴/hc

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