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千千万万遍
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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
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 = 4186 J/(kg · K)
Specific heat of ice Ci = 2050 J/(kg · K)
Latent heat of water Lw = 2260 kJ/kg
Latent heat of ice Li = 334 kJ/kg
Density of ice ρi = 916 kg/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/(4πε0)=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
Part A: Multiple Choice
1)Two planets X and Y travel counterclockwise in circular orbits around a star as shown in the figure below:
The radii of their orbits are in the ratio 3 :1. At some time, they are aligned as in Fig. 1, making a straight line with the star. After five Earth years, the angular displacement of planet X is 90.0, as in Fig. 2. What is the angular displacement of planet Y at this time?
2)You are holding a bottle of sparkling water inside a car moving forward. When the driver applies the brakes:
3)An Earth satellite revolves in a circular orbit at a height h from the surface of the Earth. If R is the Earth’s radius and g is the acceleration due to gravity at the surface of the Earth, then the speed of the satellite is given by:
4)Assume that sodium produces monochromatic light with a wavelength of 5.89× 10−7m. At what approximate rate would a 10 watt sodium-vapour light be emitting photons? Assume that the efficiency of the light bulb is about 30%.
5)Three batteries are placed in series. Each battery has an internal resistance r.If one of the batteries is placed the wrong way around as shown in the picture, what will be the total resistance of the three cells now?
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