2011CAP 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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2011 CAP Prize Exam真題免費下載

共計3小時考試時間

此套試卷由23道選擇題以及3道大題組成

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

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

Normal atmospheric pressure P0 =1.01 × 10⁵Pa

Specific heat of water Cw = 4.186 × 10³?J/(kg · K)

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 =6.63 × 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 approx-imate distance from the Sun to the Earth.

Radius of the Earth RE =6.371 × 10⁶m

Linear expansion coefficient of iron αFe = 1.1 ×10^?5K?1

Linear expansion coefficient of zinc αZn = 3.0 ×10^?5K?1

1 US mile = 1609 meters

1 US gallon = 3.785 liters

Part A: Multiple Choice

1)Incandescent light bulbs are notorious for being relatively inefficient in producing visible light. The tungsten wire inside such a bulb is at a temperature of approximately 3000 K and the emission spectrum is very similar to that of a blackbody. The e?ciency is so low because

1. Most of the electrons are absorbed in the tungsten wire.
2. Most of the power is lost due to the resistance of the bulb.
3. The electric power actually is efficiently transformed into radiation but at 3000 K, most of it is infrared.
4. A blackbody absorbs more light than it emits,hence it appears black.

2)A solar panel installed on a spaceship has a maximum energy output of 5 kW near the Earth. What is the maximum energy output of the solar panel when the spaceship is near Mars?

(The distance from the Earth to the Sun is 1 A.U. and from Mars to the Sun is 1.5 A.U.)

1. 3.3 kW;
2. 2.2 kW;
3. 1.0 kW;
4. 0.55 kW;
5. 0.20 kW.

3)A scientist measured a 1μA current in an area of a hu-man brain. Unlike current in metals which is carried by free electrons,the current in the brain is mainly car-ried by potassium ions. Each potassium ion has one unit of charge e. This current corresponds to the ?ow of how many potassium ions per second?

1. 6× 10⁵;
2. 6× 10⁶;
3. 6× 10⁸;
4. 6× 10¹²;
5. 6× 10¹⁸ .

4)The gas supply to your physics professor’s house suddenly stops due to a gas line failure. It is winter and the temperature outside is ?5 ^oC and constant. Assuming all the doors and windows remain closed, which of these graphs best describes how the temperature in the house changes with time after the gas supply stops?

1. 
2. 
3. 
4. 

5)The ray of light travelling in air hits the parallel glass plate as shown. Which are the possible continuations of the light ray?

1. 4 only.
2. both 2 and 4.
3. both 3 and 6.
4. both 1 and 5.

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