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

2、两根长为L相同的均匀带电细棒，线电荷密度λ，沿一直线放置，两棒之间的最近距离也为L，如果两棒上的电荷不能自由移动， 试求两棒间的静电相互作用力。 L L L 3、一定量理想气体的循环过程， 已知在状态A的温度为300K A) 气体在状态B、C的温度。 B) 各过程中气体对外作的功。

P 300P A 100P C B V 1 2 3 C) 整个循环过程中气体从外界吸收的总热量。 （各过程吸收、放出热量的代数和）

4、在半径为r的金属球之外有一层半径为R的均匀电介质层， 相对电容率为ε

金属带电量为r ，

Q，求：

R Rrr r A) 介质层内、外的电场强度分布。 B) 介质层内、外的电势分布。 5、

有两个平行板电容器C1和C2 ，

C1用空气做电介质，C2用松节油作电介质（εr＝2.16）， 其它条件完全相同，现在把二者并联后充入总电量Q， Q＝1.58×10-7C，求每个电容器的带电量。

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 a物理综合练习（A）答案

一、 选择题：1）C ; 2) C ; 3) C ; 4) C ; 5) A ;

6) D ; 7) B ; 8) B ; 9) D ; 10) A .

二、 填空题： 1) （v02cos2θ0）/g ;

2) 4M/mR ;16M2t2/m2R3 3) P , Ek , W ; 4) 不等 ，相等； 5) 降低 ; 6) 12.5J , 20.8J , 24.9J 7) πR2IB/2 , 向上 , (π/2)+nπ (n=1,2,3….)

?0IVd?Lln() , UA>UB 8) –S(dB/dt) ; 9) ?2?d三、 计算题:

1) 参照教材第四章P(137) 例题 1 (其中v = at2/2) 2) 参照辅导教材P(41) 例题1

3) PA=300pa , PB=PC=100pa , VA=VC=1m 2, VB=3m2 TC=100K , TA=300K 系统在各过程中做的功: A→B: (PA - PB)(VB -VC)/2=400J B→C： TB（VC -VB）=-200J

C→A：0 ；系统总功：200J ；△E=0 ；Q=200J

4）由高斯定理：球内E0=0 ；

介质内: E内=Q/(4πεr2) ; 介质外: E外=Q/(4πε V外?0 r2

)

??r??E?dr?4??0R

Q

V内??Rr?????E内?dr??E外?dr?RQ?11?????

4??0R4???rR?QPushing 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

5) 因为: C2=εC1 , C=C1+C2=(1+εr)C1 并联时两电容器电压相等: U1=U2 ,

Q1/C1=Q2/C2=Q2/εr C1

Q1=Q2/εr ; Q=Q1+Q2=Q1+εr Q1

所以: Q1=Q/(1+εr) =0.5×10-7C;

Q2= Q -Q1=εrQ/(1+εr)=1.08×10-7C