2015CAP Prize Exam加拿大高中物理大奖赛真题免费下载

历年CAP High School Prize Exam加拿大高中物理大奖赛

真题与答案下载

 

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2015 CAP Prize Exam真题免费下载

共计3小时考试时间

此套试卷由25道选择题以及3道大题组成

每道大题含有不同数量的小题

完整版下载链接见文末

部分真题预览：

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

Normal atmospheric pressure P0 =1.01 × 10⁵Pa

Density of fresh water ρ =1.00 × 10³kg/m³

Specific heat of water Cw = 4186J/(kg · K)

Specific heat of ice Ci = 2050J/(kg · K)

Latent heat of water Lw = 2260kJ/kg

Latent heat of ice Li = 334kJ/kg

Density of ice ρi = 916kg/m³

Fundamental charge e =1.60 × 10⁻¹⁹C

Mass of electron me =9.11 × 10⁻³¹kg

Mass of proton mp =1.67 × 10⁻²⁷kg

Planck’s constant h =6.63 × 10⁻³⁴Js

Coulomb’s constant 1/(4_πε0)=8.99 × 10⁹ N · m² /C²

Boltzmann’s constant k=1.38 × 10⁻²³J/K

A.U. Astronomical Unit = 1.49598 ×10¹¹m: The approx­imate distance from the Sun to the Earth.

Radius of the Earth RE =6.371 × 10⁶m

Radius of the Sun RS =6.96 × 10⁸m

Stefan’s constant σ =5.6704 × 10⁻⁸W/(m²· K⁴)

H2 Molar mass 2.016g/mol

O2 Molar mass 31.998g/mol

N2 Molar mass 28.013g/mol

Part A: Multiple Choice

1)As shown in the picture, a ball is attached to a ceiling and a wall with massless ropes A and B. Rope A is at angle θ from the vertical direction, and rope B is horizontal. The system is static. If rope B is cut, what is the ratio of the tension in rope A immediately after it is cut to the tension in A before it is cut?

1. 1
2. cos θ
3. 1/ cos θ
4. cos² θ
5. cos θ sin θ

2)Consider a circuit made of a wire with uniform resis­tance in a shape of a circle as shown in the picture. The circle is connected diagonally from point A to point B with the same type of wire. If the current passing through the circuit is i0, what is the current passing through the wire AB as a function of angle θ?

1. 0
2. 
3. 
4. 

3)The following graph represents the speed of a car as a function of time. We know that as the car speeds up there is a friction force with air that can be approxi- mately considered to be proportional to the speed of the car.

Which of the following graphs can be the force of the engine as a function of time?

1. 
2. 
3. 
4. 
5. 

4)If electromagnetic radiation with intensity I (power per unit area) is absorbed by a surface, it exerts a pressure on the surface that is given by , where c is the speed of light and θ is the angle the light rays hit the surface relative to a direction perpendic­ular to the surface. The Sun has a radiation power of P =3.9×10²⁶ W. The absorption of sunlight by Earth causes a force on Earth that pushes it away from the Sun. Which of the following is closest to the magnitude of this force?

1. 10⁷ N
2. 10⁹ N
3. 10¹¹ N
4. 10¹³ N

5)As shown in the picture a cylinder with volumetric thermal expansion coefficient of βc =3 × 10⁻⁶/ ^oC is completely submerged and floating in a fluid at the temperature 50^oC. Thefluid has volumetric thermal expansion coefficient of βf =8 × 10⁻⁵/ ^oC. If we cool down the cylinder and the fluid to 0^oC what percentage of the cylinder’s height will be out of the fluid?

1. 0.39 %
2. 0.42 %
3. 0.78 %
4. 0.84 %

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