大学物理综合练习(A)

Pushing ahead, East, North, West development, facilitating shanty, complete xincheng West Road, stability and reconstruction of the street, Star Ding garden built century Garden District, subject public housing construction, heating the gas expansion accelerated implementation, Jing Rui River and bridge style line solid shaft, further expanded the town development. Beautiful country adhere to the advance and typical for a group to lead. According to \ogical lay based, and industry increased income, and live upgrade civilization, and culture rich connotation\caught built beautiful village, and whole village advance, and easily relocation, and \built\ct near 30 a; depth into ecological, and industry, and culture, and tourism, elements, high standards caught party original city Liu, and jade are Xia AO, model village, in province City set has benchmark. Four is equal benefits to promote sharing, coordinated development of various social undertakings. In the case of rigid spending slowing revenue growth, increase, financial 75% to the people's livelihood, the masses have more access in the sharing. Cuoban something good and benefit. Adhere to the affordable, best, carefully cuoban village oil, water and heat, cultural, city and County columns practical, developments benefit families, bring more welfare to the masses. Development of social convenience. Acceptance of balanced development of compulsory education through the national assessment, the County vocational education center was named \onal education in China\batch of national reform and development model through provincial ... Five is to deepen reform and innovation to break bottlenecks and endogenous development of effective fire. As an engine of dynamism, adding reform key to adopting reform measures stress energy and break bottlenecks and promoting development. Pay close attention to the key areas of reform. Conscientiously implement the provincial deployment and cancel, adjustment, to undertake the administrative approval items according to Regulation 347 to further improve administrative efficiency continuing deepening reform for poverty alleviation, speeding up rural land right registration certification pilot project, encouraging the orderly transfer of land management, utilize the land resources, in order to promote scale management laid the Foundation. Actively cultivate the market. Firmly establish a market-oriented, nurturing family farms, industrial users, professional cooperation organization new market management main body 456, effectively improve the industry, intensive and marketization of encouraging support social capital into the small micro-credit, urban development, culture and tourism, public services and other areas, easing development shortfall. To promote mass innovation. o support the rural sector to use new thinking and new ideas, creative work incentives such as actively promoting financial intermediation, bring added 159 in non public enterprises, individually-1540, created a大学物理综合练习（A）

一、 选择题 1、

车以速率v向西行驶，风以相同速率从北偏西30度吹来，问

在车上的人感到风从何方向吹来？

A) 北偏东30度； B)南偏东30度；

C)北偏西30度； D)西偏南30度

2、

质量为的m质点，以不变速率v沿正三角形的水平光滑轨道

运动，越过A角时轨道对质点的冲量为：

A) mv; B)1.42mv; C)1.73mv; D)2mv A 3、

光滑水平桌面上有一长为2L、质量为m的细杆，可绕其中心

轴自由转动，起初杆静止，现有两个相同的小球m，以相同的速率相向运动，同时与杆的两个端点发生完全非弹性碰撞，这一系统碰撞后的角速度为： 2L

A） 2v/3L; B) 4v/5L; m C) 6v/7L; D) 8v/9L; E) 12v/7L 4、

已知高斯面所包围的电量代数和为零，可以肯定：

A) 高斯面上各点场强均为零。

B) 通过高斯面上每一面元的电通量均为零。 C) 通过整个高斯面的电通量为零。 D) 以上说法都不对。

Pushing ahead, East, North, West development, facilitating shanty, complete xincheng West Road, stability and reconstruction of the street, Star Ding garden built century Garden District, subject public housing construction, heating the gas expansion accelerated implementation, Jing Rui River and bridge style line solid shaft, further expanded the town development. Beautiful country adhere to the advance and typical for a group to lead. According to \ogical lay based, and industry increased income, and live upgrade civilization, and culture rich connotation\caught built beautiful village, and whole village advance, and easily relocation, and \built\ct near 30 a; depth into ecological, and industry, and culture, and tourism, elements, high standards caught party original city Liu, and jade are Xia AO, model village, in province City set has benchmark. Four is equal benefits to promote sharing, coordinated development of various social undertakings. In the case of rigid spending slowing revenue growth, increase, financial 75% to the people's livelihood, the masses have more access in the sharing. Cuoban something good and benefit. Adhere to the affordable, best, carefully cuoban village oil, water and heat, cultural, city and County columns practical, developments benefit families, bring more welfare to the masses. Development of social convenience. Acceptance of balanced development of compulsory education through the national assessment, the County vocational education center was named \onal education in China\batch of national reform and development model through provincial ... Five is to deepen reform and innovation to break bottlenecks and endogenous development of effective fire. As an engine of dynamism, adding reform key to adopting reform measures stress energy and break bottlenecks and promoting development. Pay close attention to the key areas of reform. Conscientiously implement the provincial deployment and cancel, adjustment, to undertake the administrative approval items according to Regulation 347 to further improve administrative efficiency continuing deepening reform for poverty lleviation, speeding up rural land right registration certification pilot project, encouraging the orderly transfer of land management, utilize the land resources, in order to promote scale management laid the Foundation. Actively cultivate the market. Firmly establish a market-oriented, nurturing family farms, industrial users, professional cooperation organization new market management main body 456, effectively improve the industry, intensive and marketization of encouraging support social capital into the small micro-credit, urban development, culture and tourism, public services and other areas, easing development shortfall. To promote mass innovation. o support the rural sector to use new thinking and new ideas, creative work incentives such as actively promoting financial intermediation, bring added 159 in non public enterprises, individually-1540, created a5、有一绝热容器被隔板分成两半，一半为真空，一半为理想气体，抽出隔板气体自由膨胀达到平衡后：

A)温度不变，熵增加；B)温度升高，熵增加； C)温度降低，熵增加；D)温度不变，熵不变。

6、在均匀磁场B中作半径为r的半球面S, S边线所在平面的法线方向的单位矢量n 与B的夹角为a，通过半球面S的磁通量为： A) πr2B; B) 2πr2B; C) -πrBsina; D) -πrBcosa;

2

2

n a B 7、 在沿半径为R的空心长圆筒导体均匀分布的电流产生的磁场中，哪一条曲线表示B~x的关系。

A） B) C) D）E) －Q

8、均匀带负电球体外放置一电偶极子，其电矩P的方向如图所示，当释放电偶极子后它将：

A) 沿逆时针旋转直到P沿径向指向球面而停止。

B) 沿逆时针旋转直到P沿径向指向球面，同时沿电场线方向向球面运动。

C) 沿逆时针旋转直到P沿径向指向球面，同时逆电场线方向远离球面运动。

D) 沿顺时针旋转到P指向径向朝外，同时沿电场线方向向球运动。

Pushing ahead, East, North, West development, facilitating shanty, complete xincheng West Road, stability and reconstruction of the street, Star Ding garden built century Garden District, subject public housing construction, heating the gas expansion accelerated implementation, Jing Rui River and bridge style line solid shaft, further expanded the town development. Beautiful country adhere to the advance and typical for a group to lead. According to \ogical lay based, and industry increased income, and live upgrade civilization, and culture rich connotation\caught built beautiful village, and whole village advance, and easily relocation, and \built\ct near 30 a; depth into ecological, and industry, and culture, and tourism, elements, high standards caught party original city Liu, and jade are Xia AO, model village, in province City set has benchmark. Four is equal benefits to promote sharing, coordinated development of various social undertakings. In the case of rigid spending slowing revenue growth, increase, financial 75% to the people's livelihood, the masses have more access in the sharing. Cuoban something good and benefit. Adhere to the affordable, best, carefully cuoban village oil, water and heat, cultural, city and County columns practical, developments benefit families, bring more welfare to the masses. Development of social convenience. Acceptance of balanced development of compulsory education through the national assessment, the County vocational education center was named \onal education in China\batch of national reform and development model through provincial ... Five is to deepen reform and innovation to break bottlenecks and endogenous development of effective fire. As an engine of dynamism, adding reform key to adopting reform measures stress energy and break bottlenecks and promoting development. Pay close attention to the key areas of reform. Conscientiously implement the provincial deployment and cancel, adjustment, to undertake the administrative approval items according to Regulation 347 to further improve administrative efficiency continuing deepening reform for poverty alleviation, speeding up rural land right registration certification pilot project, encouraging the orderly transfer of land management, utilize the land resources, in order to promote scale management laid the Foundation. Actively cultivate the market. Firmly establish a market-oriented, nurturing family farms, industrial users, professional cooperation organization new market management main body 456, effectively improve the industry, intensive and marketization of encouraging support social capital into the small micro-credit, urban development, culture and tourism, public services and other areas, easing development shortfall. To promote mass innovation. o support the rural sector to use new thinking and new ideas, creative work incentives such as actively promoting financial intermediation, bring added 159 in non public enterprises, individually-1540, created a9、已知圆环形螺线管的自感系数为L，如将其锯成两个半环形螺线管，则两个半环的自感系数为： A) 都是L/2;

B) 一个大于L/2,一个小于L/2 ; C) 都大于L/2; D) 都小于L/2; 10、对位移电流有以下四种说法，选择正确的说法：

A) 位移电流是由变化的电场产生的。 B) 位移电流是由线性变化的磁场产生的。 C) 位移电流的热效应服从焦耳～楞次定律。 D) 位移电流的磁效应不服从安培环路定律。 二、 填空题

1、 以初速率V0，抛射角θ

0

抛出一物体，其抛物线轨道最高点处

的曲率半径为_________。

2、 质量为m、半径为R的薄圆盘，可绕通过其直径的光滑轴转动，

转动惯量为J=mR2/4；求在恒力矩M作用下，圆盘从静止到t秒后盘边缘上距轴为R的B点的切向加速度at_____； B 法向加速度an_______。 3、 下列物理量：质量、动量、冲量、动能、 势能、功中与参考系选择有关的物理量是___________。 4、 两个卡诺热机，一个工作在T1，T3之间， 另一个工作在T2，T3之间，已知两循环的面积相等， T3 P T2 T1 V 可知：两热机效率________(不等；相等)，

两热机吸收与放出的热量的差值________(不等；相等)。

Pushing ahead, East, North, West development, facilitating shanty, complete xincheng West Road, stability and reconstruction of the street, Star Ding garden built century Garden District, subject public housing construction, heating the gas expansion accelerated implementation, Jing Rui River and bridge style line solid shaft, further expanded the town development. Beautiful country adhere to the advance and typical for a group to lead. According to \ogical lay based, and industry increased income, and live upgrade civilization, and culture rich connotation\caught built beautiful village, and whole village advance, and easily relocation, and \built\ct near 30 a; depth into ecological, and industry, and culture, and tourism, elements, high standards caught party original city Liu, and jade are Xia AO, model village, in province City set has benchmark. Four is equal benefits to promote sharing, coordinated development of various social undertakings. In the case of rigid spending slowing revenue growth, increase, financial 75% to the people's livelihood, the masses have more access in the sharing. Cuoban something good and benefit. Adhere to the affordable, best, carefully cuoban village oil, water and heat, cultural, city and County columns practical, developments benefit families, bring more welfare to the masses. Development of social convenience. Acceptance of balanced development of compulsory education through the national assessment, the County vocational education center was named \onal education in China\batch of national reform and development model through provincial ... Five is to deepen reform and innovation to break bottlenecks and endogenous development of effective fire. As an engine of dynamism, adding reform key to adopting reform measures stress energy and break bottlenecks and promoting development. Pay close attention to the key areas of reform. Conscientiously implement the provincial deployment and cancel, adjustment, to undertake the administrative approval items according to Regulation 347 to further improve administrative efficiency continuing deepening reform for poverty lleviation, speeding up rural land right registration certification pilot project, encouraging the orderly transfer of land management, utilize the land resources, in order to promote scale management laid the Foundation. Actively cultivate the market. Firmly establish a market-oriented, nurturing family farms, industrial users, professional cooperation organization new market management main body 456, effectively improve the industry, intensive and marketization of encouraging support social capital into the small micro-credit, urban development, culture and tourism, public services and other areas, easing development shortfall. To promote mass innovation. o support the rural sector to use new thinking and new ideas, creative work incentives such as actively promoting financial intermediation, bring added 159 in non public enterprises, individually-1540, created a5、 设气体分子服从麦克斯韦速率分布律，在平均速率V到 V＋ΔV范围内的分子数占总分子数的百分率随气体的温度升高而_________。（增加、降低或保持不变）

6、 三个容器内分别储有1mol氦(He)；1mol氢(H)；1mol氨(NH2) 若均可视为刚性理想气体分子,当它们的温度升高1K时三种气体的内能增加值为: 氦_____; 氢_____; 氨_____。 7、

半径为R的半圆线圈通有电流I，线圈平面与均匀磁场B平行，

线圈所受磁力矩的大小为_______；方向为_______；把线圈绕轴转过角度________时，磁力矩恰为零。 O B 8、 已知在面积为额S的平面闭合线圈内 R 有一随时间均匀变化的磁场B（t）, I 则此线圈内的感应电动势为_________。

9、 长直导线中通有电流I，另有长为L的直金属导线AB, 与其共面，并以速度V平行于长导线作匀速运动，问： I A) 金属导线中的感应电动势__________。 v B) A、B两端哪端电势高_____________。 A B

三、 计算题

1、质量为m的物体与绕在定滑轮上的轻绳相连， M 设定滑轮质量为M、半径为R，绳与滑轮间无滑动， R 求物体由静止开始下落过程中速度与时间的关系。

m