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千千万万遍
共计3小时考试时间
此套试卷由两部分组成
25道选择题
以及3道简答题组成
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
Radius of Earth RE=6.38× 106 m
Radius of Moon RM=1.70× 106 m
Mass of Earth ME=5.98× 1024 Kg
Mass of Moon MM=7.35× 1022 Kg
Mass of Sun MS=1.99× 1030 Kg
Radius of Moon's orbit REM=3.84× 108 m
Radius of Earth's orbit RES=1.50× 1011 m
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 =1.673 × 10−27kg
Mass of Neutron mn =1.675 × 10−27kg
Planck’s constant h = 6.63x10-34 J·s
Coulomb’s constant 1/(4πε0) = 8.99x109 N·m2/C2
Permeability of free space μ0 = 4π × 10−7N/A2
Speed of sound in air vs=343m/s
Density of air ρ=1.2kg/m3
Boltzmann constant k=1.38 × 10−23J/K
Absolute zero T=0 K,T=-273°C
Energy conversion 1eV=1.6 x 10-19J
Avogadro's number NA=6.02 × 1023mol-1
Part A: Multiple Choice
1)The time dependence of the acceleration of a car is as shown. Which time corresponds to the maximum speed of the car?
2)Two identical loudspeakers are supplied with identical sinusoidal signals. They are placed close to one another in a room and it is noted that there are regions of increased and decreased sound intensity in the vicinity of the speakers. Which of the following actions will not change this pattern?
3)Two black objects of the same diameter, a sphere and a disc, are placed in front of a uniform beam of light. The plane of the disc is perpendicular to the light rays. The force acting upon them by the light is:
4)A 1 kg mass rests on the ground, at sea-level and at the equator. What would its weight be if the earth were spinning ten times faster than is presently the case?
5)An ideal Ammeter—a device to measure current in an electrical circuit—should have an internal resistance which is,
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