题库网 (tiku.one)

 找回密码
 立即注册

 

      

上传图片附件

未使用图片

小贴士: 允许的图片文件格式为: gif, jpg, jpeg, png, webp,上传完成后会在上方生成预览,用鼠标连续双击缩略图,或拖动缩略图,该图片就被绑定至本题,显示在题目下方

本次作答已使用

小贴士: 此栏目显示的是当前作答使用的所有图片,绑定到某一题目的图片同时会显示在该题目下方; 删除使用的图片会将其转移到<未使用图片>类别


习题练习:Physics Unit16: Electric Charge and Electric Field

 作者: admin   总分: 82分  得分: _____________

答题人: 游客未登录  开始时间: 22年08月15日 13:36  切换到: 整卷模式

标记此题
1#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State the law of conservatiomkmc6l(ctsan;d -:dz(b i-n )n of electric charge.
参考答案:    

标记此题
2#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Is it possible for two negative charggj,z0;yzs kcz/,8s fxes to attract each other?

参考答案:    

标记此题
3#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Is it possible for a )t,i e.ta obz:positive and a negative charge to attract each other?

参考答案:    

标记此题
4#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A glass rod is rubbed with a piece of silk. During l ;6em/tr5wj9zgdp5o e6 2(orpgw9ivthe process the glass rod acquire2 g wm6t/ ir edowjl5 zr9;vp5pg9(6eos a positive charge and the silk

参考答案:    

标记此题
5#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A proton carries a

参考答案:    

标记此题
6#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The model of the atom sho+cz)tp(u bgss)q 8ex 9ws a

参考答案:    

标记此题
7#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A neutral atom always hasy8 o7ka3ulh*)ba h )bb:zcd/ o

参考答案:    

标记此题
8#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An atom has more electrons than protons. Theg )zy+bhb )qlvl)s;2d atom is

参考答案:    

标记此题
9#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Materials in which the electrons are bound very tightly to the nuclei*xhl1je 6rf w/o0 41 vg6bc u*d; :apxnkqq/yn are referrk/n pqn 04fqe;a 1o6yxrcvbh ujd1gwx6*/:*led to as

参考答案:    

标记此题
10#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Materials in which the electrons are bound very loosely to the nuclei an,a)jr 2otd9mpd can move about freely with ot9dam2)rpj, in the material are referred to as

参考答案:    

标记此题
11#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A negatively charged +) vkps;z2lgxrod is brought near one end of an uncharged metal bar. The end of the metal bar farth )2x;vlsk gp+zest from the charged rod will be charged

参考答案:    

标记此题
12#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sphere A carries a net posi+uph- g +4gxgfb +hul1 dht,2ytive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briy1+tug 2,4g-+d b+lhhg hxu pfefly touched with a wire that is grounded. Which statement is correct?

参考答案:    

标记此题
13#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  How can a negatively charged rod charg 4,culfyje 1v:yq(om +0 l1udhe an electroscope positively?

参考答案:    

标记此题
14#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An originally neutral electroscope is briefly touched w ;;+zjwuau :zaith a positively charged glass rod. The electroscopaazz:wj uu;+; e

参考答案:    

标记此题
15#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An originally neutral electroscope is grounded briefly while a pobnsx4 wxl v7u4 bwxex2y3s78) sitively charged glass rod is helxb43b8ux7sx ) lw7xnvesy42 wd near it. After the glass rod is removed, the electroscope

参考答案:    

标记此题
16#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A positive object touches a neutral electroscz cr)e3e,:k cuope, and the leaves separate. Then a negative object is brought near the ele,kz)e u ec:rc3ctroscope, but does not touch it. What happens to the leaves?

参考答案:    

标记此题
17#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A large negatively charged object is placed on an insulated tableyh n.ifr2 7 pc3hv07(lebz.hq . A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path followed by the first ball, strikes the first ball, and stops. The first ball rolls forward, but does ne 0rph(yq h2b..l7vzfh3in c7ot touch the negative object. At no time does either ball touch the negative object. What is the final charge on each ball?

参考答案:    

标记此题
18#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Charge is

参考答案:    

标记此题
19#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What are the units of the Cok p4tppb70m74w e4 g b*io/qiuulomb constant $k$, which appears in Coulomb's law?

参考答案:    

标记此题
20#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two charged objects are separated bkgl9ax0 g- j fiof.seo3-v y*+*s 6l3 lqjft8my a distance d. The first charge is larger in magn9ay 3qsjfvso*oe -lgfxlgf.l itk0*m386+j -itude than the second charge.

参考答案:    

标记此题
21#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Sphere A carries a net charge and sphere34 0egobg i6im;yvk/i B is neutral. They are placed near each other on an insulated table. Which statemen3 im i6ig;vbk/ gy4oe0t best describes the electrostatic force between them?

参考答案:    

标记此题
22#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two charged objects attract each other with a certain force. If the czztgjj x-obl 0+(r,q, harges on both objects are doubled j t(rgz ,b0,j+l q-xozwith no change in separation, the force between them

参考答案:    

标记此题
23#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two charges are separated by a distance d and exert mutuv7ir,yo; v:l nal attractive forces of F on each othervn;7:iolry, v. If the charges are separated by a distance of d/3, what are the new mutual forces?

参考答案:    

标记此题
24#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two charged objects attract ew,oj**i,plb qbc 6xfopk)3kv n v6h7q,w6 .qgach other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between to vq,wnxj.6*qwqb f,bpo73v,*hg)ck6 pi 6lkheir centers is reduced to one-fourth its original value? The force is now equal to

参考答案:    

标记此题
25#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electron and a proton ospmpbft2)*ca/t j*6 are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second elet/ j*)fo*ma 2pbtspc6ctron is placed next to the first electron?

参考答案:    

标记此题
26#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electron and a proton are separated by a distance of 1.0 m. ;pwask9 y/it 4 What happens to the magnitude of the force on the first electry;4 9ski pt/awon if a second electron is placed next to the proton?

参考答案:    

标记此题
27#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electron and a proton are separated by a dp;h h6 ).pr z4zwcy 5upd+wxo:istance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the pryruw;h5o4.cp+pp): dhxz wz 6oton?

参考答案:    

标记此题
28#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A point charge of +Q is placed at the center of a square. When .nfiz9;n1yh xoflt 7+a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 N acts on the positive charge at the square's center. Now, identical charges of -Q are placed at the other three corners of the square. What is the magnitude of thef+h ot;f7l1xz. n n9yi net electrostatic force acting on the positive charge at the center of the square?

参考答案:    

标记此题
29#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A point charge of +Q is placed at the centroid of an equilateral triwxwkgbd097 l9 angle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on it. What is the magnitude of the force that acts on the center charge 70kx9g9bd wwldue to a third charge of +Q placed at one of the other vertices?


参考答案:    

标记此题
30#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Which of the following e5.hkiw. -0bbsrl- avis not a vector?

参考答案:    

标记此题
31#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  At twice the distance from a point charge3kl9mmqyk80dh0eoz 1udw3 p7 , the strength of the electric field

参考答案:    

标记此题
32#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Is it possible to have+e/tovxmp: edm) k5*tubgg(s.1 )m* 0jxhasg a zero electric field value between a negative and positive charge alontgmasxmhg )x/)b*k s u.j5 ogp*ed 01ev(m: t+g the line joining the two charges?

参考答案:    

标记此题
33#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Is it possible to have a zero electric field value between tworavepsu(c7ckh, /l 82yoi*/y positive charges ao,h /2 u(ec/yl8 k7savpir*yclong the line joining the two charges?

参考答案:    

标记此题
34#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Electric field lines near psitive point r(6skj +j4q 3q4wyrxvcharges

参考答案:    

标记此题
35#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The electric field shown7xpyp fd. ozk5d5frh41m 10td


参考答案:    

标记此题
36#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Can electric field lines intersect in free space bus 8pr-m9)0jttqb)en6 i3cl ?

参考答案:    

标记此题
37#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A solid block of metal in electrostatic equilibrd+q- qcx.oz- nt u-ymjkut. +s20tqb1ium is placed in a uniform electric field. Give a statement conq+ou+t-jxtkqz1qdtync .-u-02b. sm cerning the electric field in the block's interior.

参考答案:    

标记此题
38#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a solid metal sphere and a hollow meta(sk 8tm1c*ddql sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface is dsk1qm8d t*c(

参考答案:    

标记此题
39#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A cubic block of aluminum rests on a wooden table in a region where a ubq /;nlg k:ykzx:1fq9niform electric field is directed straight upward. What can be said concerning the chargeq1gf :l9bq z kknx:;/y on the block's top surface?

参考答案:    

标记此题
40#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  If a conductor is in ele.didx1+a rpf93:ffs2zpa: iw ctrostatic equilibrium near an electric charge

参考答案:    

标记此题
41#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A positive point charge is enclosed in a hollow metallic sphere that is groundedyfq c beyf9sy9)/o.:t . As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphy9fs)bt.yceqo 9f/ y: ere has

参考答案:    

标记此题
42#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State three properties of conductors in gd:jud ws-lx7 2k48 xbstatic equilibrium.
参考答案:    

标记此题
43#
 
问答题 ( 1.0 分) 切至整卷模式 搜藏此题  
State Gauss's law.
参考答案:    

标记此题
44#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The charge carried by one elecodq3me4zox6 -.2qa wmcp(p-r tron is $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

参考答案:    

标记此题
45#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A piece of plastic has a net charge of +2.00 mC.rrv58 8,2all.kc0.h mlevkjgb-h a 8a How many more protons than electrons does this. jllghrhl8 , 8e-5.8 akvak2rmbv 0ca piece of plastic have?

参考答案:    

标记此题
46#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What is the charge on 1 k4dtexeb+ e,f +d9lf (gg of protons?

参考答案:    

标记此题
47#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An atomic nucleus has a charpeb/ ,uoh( r.jge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

参考答案:    

标记此题
48#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two point charges, separated by 1.5 cm, have charge values of 2.0 and -4.0 mC, l gnjx8x62/u*1ht6uhopy6gc1e ;ozx respectively. What is the magnil 1 28 tx6/cu6o1hj*;xgnx hpoyzue6gtude of the electric force between them?

参考答案:    

标记此题
49#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 1.0-C charge is 15 m from a second charge, and thu,.bms tpekm5au 70 o9hos;qqa; )fp1e force between them is 1.0 N. What is the magnitude ofukpa7ob1pqt; uo.q ,smm 59h;easf )0 the second charge?

参考答案:    

标记此题
50#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two 1.0-C charges have a force zu t/cnia .0y v4d1* r pwmj/sf-c.i8tbetween them of 1.0 N. How far apart are they?

参考答案:    

标记此题
51#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  The force between a u*nn / og//i:chn3kbh$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

参考答案:    

标记此题
52#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two point charges, initially 2.0 cm apart, experience a 1.0 4+u9an ox6np,a0 fntq-N force. If they are moved txq 9ft0p oa6an4+un,no a new separation of 8.0 cm, what is the electric force between them?

参考答案:    

标记此题
53#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical point charges of 2.0 mC are placed on the x-a-liho cl)3 :qmxis. The first charge is at the origin,ilch l)qm3-o : the second to the right at x = 50 cm, and the third is at the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

参考答案:    

标记此题
54#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three point charges are pla(o2j 6x.(t+f a3 g4iabcogsi gced on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge t. jsaoc x(4g oi32i bg(af6+gat the origin?

参考答案:    

标记此题
55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three point charges are loca+gz rgyfn1;: ::nauqhted at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitu ;nq :g:rhnzfa:1 +guyde of the force on the 3.00-mC charge?

参考答案:    

标记此题
56#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A point charge of +Q is placed at the centepw8 s3gtj ;.qiz)zkukfmtd,9 8j3;( p7ykqop r of a square, and a second point charge of -Q is placed at the upper-left corner. It is observe,w zy9 pzg .ukq;3) (oi tt;pm73pfskkqj8j8d d that an electrostatic force of 2.0 N acts on the positive charge at the center. What is the magnitude of the force that acts on the center charge if a third charge of -Q is placed at the lower-left corner?


参考答案:    

标记此题
57#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is atp-d:xfpvxd q. t ..bb+:pq .v.bdb.txd+-xf p (0, 0). What is the magnitude of the net force on the 5.0 nC charge?

参考答案:    

标记此题
58#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Q1 = 6.0 nC is at (0.30 m, mg (,l/j9xfq k0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is thefk,mqxgl9 (/j direction of the net force on the 5.0 nC charge?

参考答案:    

标记此题
59#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three identical charges of 3.0 mCt(gt nha-()vy+xmpq 7 are placed at the vertices of an equilateral triangle which measures tpmtax(vh)gq( -n+7y 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

参考答案:    

标记此题
60#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider point charges of +Q and +4nd8sq,fh6z1rz0tp+ f:d(at- clo-yf j3r;ey Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it woul3 1r;sffz fy,ha:dp(c6eqz0 8-y lo-tjdr tn+ d be zero?

参考答案:    

标记此题
61#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A +3.0-C charge is at the origin and a +9.0-C charge is at x.f 6buj d4ayyl .2o casp(+oe9 = 4.0 m. Where on the x-axis can a third ch uca6do+l 24.9oyaf(y ep.sjb arge be placed so the net force on it is zero?

参考答案:    

标记此题
62#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Charge +2q is placed at the origin and char*j4gr*fb 1tcf8xjq ,kge -q is placed at x = 2a. Where can a third b,*j*fj qxtkr4 81fcgpositive charge +q be placed so that the force on it is zero?

参考答案:    

标记此题
63#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A copper penny has a mass of 3. -mgiw2a 6dd w ko5);pp*epn(x0 g. A total of $4.0 \times 10^{12} \; electrons$ are transferred from one neutral penny to another. If the electrostatic force of attraction between the pennies is equal to the weight of a penny, what is the separation between them?

参考答案:    

标记此题
64#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An electron is held up against the force of gravity by the attraction o4 :*llbm7(pk exmbb (gf a fixed proton some distance above it. How far m b:xb( pgb(le*4l 7kmabove the electron is the proton?

参考答案:    

标记此题
65#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two 0.20-g metal spheres are hung from a common point by nonconductin1 -a5 )g+ (jufkkc1;zm.qdfnttec/y4-x edrv g threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until tht avmzgk f(y--j5/tdnr1)qex f;de1 cc4k+.ue angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

参考答案:    

标记此题
66#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  An atomic nucleus has a charge of 1e ke ::euhkv,+40e. What is the magnitude of the electric field at a distance of 1.0 e,v :u1 eke:hkm from the nucleus?

参考答案:    

标记此题
67#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  What are the magnitude and direction g d7yum bm*w:brns .g7, n g0r))6yemhof the electric field at a distance of 1.50 mnh6g*, ygbws: )bummy.ndrem) g7 70r from a 50.0-nC charge?

参考答案:    

标记此题
68#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 5.0-C charge is 10 m from a small test charge. Wh0dmj,pzh2 tvdb:x d-: at is the magnitude of the electric field amdxj, db2 hpvdt::-z0t the location of the test charge?

参考答案:    

标记此题
69#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 5.0-C charge is 10 m from a small test charge. What is the dir rk6.czzu8e wq-m;lrjmg 036f ection of the electrzzm60 q ;rw 36m.fkejgr c-l8uic field?

参考答案:    

标记此题
70#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 5.0-C charge is 10 m from a small test charge. +lr5 tkpai07c What is the magnitude of the force experienced by a 1.0 nC ch+rctl ka0 p5i7arge placed at the location of the test charge?

参考答案:    

标记此题
71#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two point charges each have)ua(a eepn0 e wjoz/8r hta7:uo nx)my 0r4)j( a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two charges?ohyenua o(j) j)z080 n/p():r t ew4axaurem7

参考答案:    

标记此题
72#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 5.0-mC charge is placed at the 0 cm mamxq2bvj 33kp0m w06nm 1x8g ewrk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at thewmmg0 8k2x mj xe31np3b 60wvq 30 cm mark?

参考答案:    

标记此题
73#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A 5.0-mC charge is placed at the 0 cm mark of a meter stu 3 :(h/nnahfft4ptt.rsg*e* ick and a -4.0 mC charge is placed at the 50 cm mark. At what p:*g(sfp 4hn.* euf3ttha r t/noint on a line joining the two charges is the electric field zero?

参考答案:    

标记此题
74#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m: 5eku iknc(k3. What is the magnitude of the electric field at the point midway betwee k53ie c:(kknun them?

参考答案:    

标记此题
75#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three 3.0 mC charges are at the three corners of a square okj 9v im6lhc7;f side 0.50 m. The last corner is vim9kcj7; 6hl occupied by a -3.0 mC charge. Find the electric field at the center of the square.

参考答案:    

标记此题
76#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Consider a square which is 1.0 m on a side. Charges aq u(xbz g)jw(0;) r8yook/yvire placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC (o0b)wu/yy xgi8r kvqzo) ;( jat (1, 1); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the magnitude of the electric field at the square's center?

参考答案:    

标记此题
77#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A force of 10 N acts on a charge of 5.0 m lelh1pkr+p83C when it is placed in a uniform electric field. What is the magnitude of this ke plhpr 1+3l8electric field?

参考答案:    

标记此题
78#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A particle with a chargevkd 8/; ejmigfl7g84030; jd haqzxwg of 4.0 mC has a mass of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

参考答案:    

标记此题
79#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A Styrofoam ball of mass 0.120 g is placed in an electric fiel7;og/x2dl jos d of 6000 N/C pointing downward. What ch /ojsx gol7d2;arge must be placed on the ball for it to be suspended?

参考答案:    

标记此题
80#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ballv)98q8rz 4z nkh wv,pde (8upw4 c .;6kivqfvl is placed inside a uniform el)rkpwlv 44k 8 ;ef8u6wc8hzv.vn( , qqzv9id pectric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

参考答案:    

标记此题
81#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A metal sphere of radius 10 cm +2(mnppibc9 wcarries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 c(np p+2iwmcb 9m from the sphere's surface?

参考答案:    

标记此题
82#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  A metal sphere of radius 2.0 cm carries a charge of 3.0 hsyk4j u1-)vuw nc(tb u9 7tku 1h,lq4mC. What is the electric field 6.0 cm from the center of the 1u4 1(uncqks7 vu, lh 4ywhtbkuj)-t9sphere?

参考答案:    

总分:82分 及格:49.2分 时间:不限时
未答题: 已答题:0 答错题:
当前第 题,此次习题练习共有 82 道题
本平台(https://tiku.one/)支持练习,作业与考试(自动评分)三种模式,群组成绩统计排序导出,题目动态变量实现同卷千人千题
如果您对本系统感兴趣,想加入我们或者想进行任何形式的合作,请加微信 skysky1258

浏览记录|手机版首页|使用帮助|题库网 (https://tiku.one)

GMT+8, 2025-12-3 10:30 , Processed in 0.438482 second(s), 185 queries , Redis On.