[Chongqing Guangdong education] college physics of Xiangtan University: mechanical and thermal reference materials

education
- College Physics ： Dynamics 、 heat - Chapter materials, examination materials - Xiangtan University 【】
The first 1 Chapter particle kinematics （ One ） Homework
The first 1 Chapter particle kinematics （ One ） Unit tests
1、【 Single topic selection 】
A、 Move in a straight line at a constant speed
B、 Variable speed linear motion
C、 Parabolic motion
D、 General curvilinear motion
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2、【 Single topic selection 】
A、
B、
C、
D、
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The first 1 Chapter particle kinematics （ Two ） Homework
The first 1 Chapter particle kinematics （ Two ） Unit tests
1、【 Single topic selection 】
A、 Only (1)、(4) Yes. ．
B、 Only (2)、(4) Yes. ．
C、 Only (2) Yes. ．
D、 Only (3) Yes. ．
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The first 2 Chapter Particle dynamics （ One ） Homework
The first 2 Chapter Particle dynamics （ One ） Unit tests
1、【 Single topic selection 】
A、aA=0 , aB=0.
B、aA>0 , aB<0.
C、aA<0 , aB>0.
D、aA<0 , aB=0.
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2、【 Single topic selection 】
A、 A arrives first ．
B、 B arrives first ．
C、 Arrive at the same time ．
D、 Who arrives first is uncertain ．
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3、【 Single topic selection 】
A、2 m/s．
B、4 m/s．
C、7 m/s ．
D、8 m/s．
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4、【 Single topic selection 】
A、 Keep still ．
B、 Accelerate to the right ．
C、 Move at a constant speed to the right ．
D、 Accelerate to the left ．
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The first 2 Chapter Particle dynamics （ Two ） Homework
The first 2 Chapter Particle dynamics （ Two ） Unit tests
1、【 Single topic selection 】
A、1.5 J．
B、3 J．
C、4.5 J．
D、-1.5 J．
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2、【 Single topic selection 】 When a particle moves under the action of several external forces at the same time , Which of the following statements is true ？
A、 When the momentum of a particle changes , The kinetic energy of the particle must change ．
B、 When the kinetic energy of a particle remains constant , The momentum of the particle must also be constant ．
C、 The impulse of the external force is zero , The work of an external force must be zero ．
D、 The work of the external force is zero , The impulse of the external force must be zero ．
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The first 3 Chapter The rigid body rotates on a fixed axis （ One ） Homework
The first 3 Chapter The rigid body rotates on a fixed axis （ One ） Unit tests
1、【 Single topic selection 】 There are two forces acting on a rigid body with a fixed axis of rotation ： (1) When these two forces are acting parallel to the axis , Their resultant moment on the axis must be zero ; (2) When these two forces act perpendicular to the axis , Their resultant moment to the axis may be zero ; (3) When the resultant force of these two forces is zero , Their resultant moment to the axis must also be zero ; (4) When the resultant moment of these two forces to the axis is zero , Their resultant force must also be zero ． In the above statement ,
A、 Only (1) That's right. ．
B、(1) 、(2) correct ,(3) 、(4) error ．
C、(1) 、(2) correct ,(3) 、(4) error ．
D、(1) 、(2) correct ,(3) 、(4) error ．
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2、【 Single topic selection 】 A light rope is wound around a fixed pulley with a horizontal shaft , The moment of inertia of the pulley is J, Hang an object at the lower end of the rope ． The gravity of an object is P, The angular acceleration of the pulley is b． If the object is removed to match P Pull the rope down with equal force , Angular acceleration of pulley b take
A、 unchanged ．
B、 smaller ．
C、 Bigger ．
D、 How to change cannot be judged ．
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The first 3 Chapter The rigid body rotates on a fixed axis （ Two ） Homework
The first 3 Chapter The rigid body rotates on a fixed axis （ Two ） Unit tests
1、【 Single topic selection 】
A、LB > LA,EKA > EKB．
B、LB > LA,EKA = EKB．
C、LB = LA,EKA = EKB．
D、 LB < LA,EKA = EKB．
E、LB = LA,EKA < EKB．
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2、【 Single topic selection 】
A、 increase ．
B、 unchanged ．
C、 Reduce ．
D、 Undetermined ．
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The first 4 Chapter Special relativity （ One ） Homework
The first 4 Chapter Special relativity （ One ） Unit tests
1、【 Single topic selection 】 In special relativity , Which of the following statements is true ？ (1) The speed of all moving objects relative to the observer cannot be greater than the speed of light in vacuum ． (2) quality 、 length 、 The measurement results of time change with the relative motion state of the object and the observer ． (3) Occurs at the same time in an inertial frame , Two events at different locations also occur simultaneously in all other inertial systems ． (4) When an observer in an inertial frame observes a clock moving at a uniform speed relative to him , You will see that the clock goes slower than the same clock that is relatively still with him ．
A、(1),(3),(4)．
B、(1),(2),(4)．
C、(1),(2),(3)．
D、(2),(3),(4)．
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2、【 Single topic selection 】 Two things happen somewhere , The time interval measured by a stationary at this place is 4 s, If B moves in a straight line at a constant speed relative to a, the measured time interval is 5 s, Then the velocity of B relative to a is (c Represents the speed of light in a vacuum )
A、
B、
C、
D、
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The first 4 Chapter Special relativity （ Two ） Homework
The first 4 Chapter Special relativity （ Two ） Unit tests
1、【 Single topic selection 】
A、0.1c
B、0.5 c
C、0.75 c
D、0.85 c
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2、【 Single topic selection 】 Let the total energy of a microscopic particle be equal to its static energy K times , Then its motion speed is ( With c Represents the speed of light in a vacuum )
A、
B、
C、
D、
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3、【 Single topic selection 】 A homogeneous rectangular thin plate , When it is still, its length is measured as a, Wide for b, The quality is m0． From this, it can be calculated that its area density is m0/ab． It is assumed that the thin plate moves along the length direction at a speed close to the speed of light u Moving in a straight line at a constant speed , At this time, the area density of the rectangular thin plate is
A、
B、
C、
D、
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The first 5 Chapter Mechanical vibration （ One ） Homework
The first 5 Chapter Mechanical vibration （ One ） Unit tests
1、【 Single topic selection 】
A、0~p/2 Between ．
B、p/2~p Between ．
C、p~3p/2 Between ．
D、3p/2~2p Between ．
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2、【 Single topic selection 】
A、1/8 s
B、1/6 s
C、1/4 s
D、1/3 s
E、1/2 s
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