College Physics智慧树知到课后章节答案2023年下中国矿业大学
中国矿业大学
第一章测试
1.What is the atomic scale in nature. （ ）

A: m B: m C: m D: m
答案: m

2.What is the cosmic scale in nature.（ ）

A: m B: m C: m D: m
答案: m

3.Which of the following statements about physics are correct.（ ）

A:Physics is one of the most fundamental scientific disciplines B:Physics concerns the phenomena from cosmos down to atoms C:Physics is the natural science D:Physics exists everywhere and everyday
答案:Physics is one of the most fundamental scientific disciplines;Physics concerns the phenomena from cosmos down to atoms;Physics is the natural science;Physics exists everywhere and everyday

4.Which of the following subjects are included in the classical physics.（ ）

A:Optics B:Thermodynamics C:Mechanics D:Electromagnetics
答案:Optics;Thermodynamics;Mechanics;Electromagnetics

5.Relativity theory and quantum mechanics are the fundamentals of modern physics. （ ）

A:错 B:对
答案:对
第二章测试
6.A bottle of water is 500 ml, in standard units, which is（ ）

A:0.05 B:0.005 C:0.5 D:0.0005
答案:0.0005

7.A vector with a magnitude 10 and angle to +y axis, which can be written down as（ ）。

A: B: C: D:
答案:

8.Which of the following physics quantities can be directly measured.（ ）

A:time B:weight C:length D:speed
答案:time;weight;length

9.Which of the following equations about vector operations are correct.（ ）

A: B: C: D:
答案:;;;

10.If two vectors are perpendicular, their dot product is zero and their cross product has the maximum magnitude. （ ）

A:错 B:对
答案:对
第三章测试
11.A particle moves along x axis, from x = 0 m to x = 10 m and then back to x = 5 m. What
are the displacement s and distance d of the motion （ ）

A: B: C: D:
答案:

12.A particle moves with a constant acceleration from rest along x axis, from x = 0 m to x = 10 m in 5 s. What is the acceleration.（ ）

A: B: C: D:
答案:

13.In linear motion, if the acceleration is opposite to the initial velocity, which of the following statements are correct.（ ）


A:The average velocity for a particular time interval can be zero B:The velocity at a particular time can be zero C:The displacement for a particular time interval can be zero D:The distance for a particular time can be zero
答案:The average velocity for a particular time interval can be zero;The velocity at a particular time can be zero;The displacement for a particular time interval can be zero

14.The motion equation of a particle is . At , which of the following results are correct. （ ）。

A:acceleration B:velocity C:acceleration D:velocity
答案:acceleration ;velocity


15.In linear motion, if the velocity does not change its direction, the magnitude of displacement will be equal to the distance. （ ）

A:错 B:对
答案:对
第四章测试
16.A particle moves from the position m to m in 2 s. What is the average velocity of this motion （ ）。

A: m/s B:reaction rod m/s C: m/s D: m/s
答案: m/s

17.A particle moves with a constant acceleration . If its initial velocity is m/s, what is the velocity of the particle at t = 2 s. （ ）

A: m/s B: m/s C: m/s D: m/s
答案: m/s

18.For a two-dimensional velocity , the change of velocity may happen as（ ）。

A:change of B:change of C:change of the angle between and D:change of both and
答案:change of ;change of ;change of the angle between and ;change of both and

19.A particle undergoes a uniform circular motion. Which of the following statements are correct.（ ）。

A:The radial component of acceleration is zero B:The magnitude of velocity equals to the speed C:The magnitude of displacement equals to the distance for any time interval D:The tangential component of acceleration is zero
答案:The magnitude of velocity equals to the speed;The tangential component of acceleration is zero

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