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 conser,fe,zzup5b0rwu 6+s rvation 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 charges to attract eac8e0pj8 4 mkdyx nec.;9z zbr3jh 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 positive and a negative charge to attract each o;myk )gm: puc(ly5gd8 ther?

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 uigdw9qr 5o (j(55/ywg(7l l1r ivcpvof silk. During the process the glass rod acquires a u/wgyp i7iv 5q dlov5l((wrjg15 (r9 cpositive 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+y)axvh7v8 sf shows 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 alwaysr fnhs 8hddn 6w:(s(s6gy/ vy) has

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 ny/ s *ch-g5uvthan protons. The 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 tz j:+ svsoif5hl8/2btightly to the nuclei are referrz svl/ot+52hji:fbs 8ed 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 nucleih;4 oi wad94jgecm) (s and can move about freele4dmj4(shgc ow ai;)9y within 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 rod is brought near one end of an uncharged metal bar. garuo8zc-* vt7e*p8s The end of the metal bar fartheeovt*s*7az8c 8 g-u prst 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 posf b7 f8i5mmx+vitive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with i5x87+ mbvmff 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 charge an electroscope po58rgmebb8 -dde9/ls4 mwlc(s sitively?

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 with a positl8ab a:( ym,pe/hke8yively charged g(kbye,/ h a:e8 pymal8lass rod. The electroscope

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 wh ptp,k6 zi6xiei.1 f5gile a positively charged glass rod is held near it. After the glass6ip5iz g6t xpe .,kf1i 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 elepfdr+7+.0 ii jxjkby; b3q mz*ctroscope, and the leaves separate. Then a negative object is*yrpz.j;b m f7+qkdix3+i b j0 brought near the electroscope, 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 3-2yrlpx jy7fon an insulated table. 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 not touch the negative object r7y2x3l- jpyf. 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 Co luvi8)5 5xfezr2e/feulomb 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 by a distanx.g 2l jl+rew2ce d. The first charge is larger in magnitude than the second+ 2glwrxjl2.e 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 sphere B iss;az.u9gg *j.w + :mxvf* jrpa neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between them?p: ug.;* zj9rxfvm+asa*.j gw

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 charges ys:)c;to i+fzon both objects are doubled wits o:+tc ;)yifzh 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 mutual attracti h:zya50g ali-ve forces of F on each other. If the charges are0lga5yh a-iz: 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 each other with a force F. Whayl1(isa/ pov k2,2xcat happens to the force between them if one charge is2 kl so1vcy/piaa(x,2 doubled, the other charge is tripled, and the separation distance between their 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 are separated by a distance of 1.0 m. Whald)6 h*x e oxv/vd2yg- 2mvjb5t happens to the magnitude of the force on the proton if a second electron is placed next to the first lyvdh)jo v/e*6dx-b52gm 2vx 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 1fzkyfyqg6r;fs8d* i 6: xl7 +v.0 m. What happens to the magnitude of the force on the first electro;68f: y ykxf l*fgz6v+i7qsdr n 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 du0j8jb)qm8 k ristance of 1.0 m. What happens to the size of the force on the proton if the electro jmubk 8qjr)08n is moved 0.50 m closer to the proton?

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 a second1dri w 2 xbpgdt b)04emz0k:8j 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 thebp zg8dmt 0w: r4x)bej20d1ik other three corners of the square. What is the magnitude of the 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 4f jqimpy 06z -n,o+yaplaced at the centroid of an equilateral triangle. When a second charge of +Q is placed at oneoqf-azy ,604jn pyi+ m 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 due 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 is not a vector? tjaq)vs8b l bk18br*m ut ay8-oy(e1.

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 charo,u axjvw fnr(5+5 0 bt6lv-cmge, 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 a zero electric field value bete1h 1/ / ;yoameg:ggc;onk0nxnd h,5kween a negative and positive charge alom;ahn1oh,ckex/g :5; ny/ ge1gdok0nng 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 fielaejlv4) fa1u(r (8 fkid value between two positive charges along the line joinin(kfr)(4 eaj lfvua18i g 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 c4xg;5 vr rj:ypharges

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 show4t:oba *vy2,j)nyx (unk: tfpn


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 interse2 ieq;vxnlf+(ct in free space?

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 equ.umo/w azdr(dam -5 -silibrium is placed in a uniform electswm-dd.o a 5um a/(zr-ric field. Give a statement concerning 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 metal sphere of equal diamet :cilcu:pbt;6g+ez tq.3 y 0zuers are each given the same charge, the electric field (E) midway between the center and the surface 3;gq6z ty+ c::uilztpcu. e b0is

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 wki jarh-. ruz8c-j-v/.) 8nbbjpj1bp here a uniform electric field is directed straight upwaji8kcu- - -azprbb/j )bjj 1np r.8h.vrd. What can be said concerning the charge 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 electrostatic equ+ +x h**jk i9zcx67y4mp zjmn:3 jmuhuilibrium 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 sph2 )3tormq/p;s7 hm fm9u5pne38;(llge ke mfeere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directlsgeemlf m9o7 rehp;q5t83(k;f)p u/mne2m 3 ly above the hollow sphere 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 staticsh191994phha/kjw )dzy m 9qufryq-k 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 electron isq wwlqkj,o6:s5tzd* 4 $e = -1.6 \times 10^{-19} \; C$. 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 +2da7hsqd7 7s:i n, xa4;fw3q jy.00 mC. How many more protons than elech3 j:ddy4ai w s;qaxnq777 sf,trons does this 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 kg of protonsu n1ys5s:) hcn8hfgo:?

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 chawuhhlmoj od0xr+j ;(:w3x/h6rge 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, separk79d sxj 72wkrated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of 27 r9x djk7wskthe 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 seco etwgy j/nfe.*uqvp:a ;+,tkdx. m h45nd charge, and the force between them is 1.0 N. What is the magnitt, gn*hw5aypve qx+/def:j.m tk .u ;4ude of 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 between them of 1.;tpt :*2rx ut)ph4c) gdm6gohi*4joi0 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 *,.r;jxk1n uhbjmif * $30 \; mC$ 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, inity rk2eoe .zf qqk, 79,be/uqd*ially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separaeqq d kqz,b9y/uer, 7*.kf 2eotion 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 plavchw : j x(9a;65eadwdced on the x-axis. The first charge is at the origin, 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 wj ev 9wd;da5 x:6(hacforce 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 placed on the 02fpc);iqkjt *o tml- 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 q ;*komct-)pj2 flti 0mC 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
55#
 
单选题 ( 1.0 分) 切至整卷模式 搜藏此题  
  Three point charges are located at the folg(n0h(xfa2r-2b0ua r+qmyhcvkqc dz8d7m)9 lowing 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 magnitude vdd(9ayf g r) 2nuk-r2zmcc0h87+x0(bma h qqof 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 /taz7 /nqemoq5 pfj(- is placed at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positive charge at the center. What is the magnitude of the force that ao5//ena(pm7qj-f q ztcts 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 2 aw4 fy2io3:i g)fjbe= 5.0 nC is at (0, 0). What is the magnitude of the netygf24w 2io :3iea)fjb 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, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 )s.:yirtisi6:vf u w0 p6dde: nC is at (0, 0). What is the direction of ie6ds6:i)i . t:0pfdv:sruyw 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 mC are plas z4zrkv*3be0 ced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any b3zs4 0k zrev*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 +Q3 y 0 sc;e vk /aqv7vbu2;y5(8wo2r3yu vpqond and +4Q, which are separated by 3.0 m. At what point, on a line betwew(v q ;o3;qpsv b8y0arnve3uk2/ cu2ov5 dy y7en the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would 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 = 4.0 m. Where on v*svwzga 0(v i7wo29 hthe x-axis can a third charge be placed so thv(9 ov hwi7 2avg0szw*e 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,gil q:kf6y vfo )+74nf/lc et the origin and charge -q is placed at x = 2a. Where can a third positive chaf+,nq itly7c/k4ffeovgl :)6rge +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 3.0 g. Avi:q :+6b.yoq.vp m:aokdpe* hajc *) 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 bf/yxt7ugx*3 p)y7s5u 3 fiibjy the attraction of a fixed proton some distance above it. How far above the electron is the tsff/7u5 yb )xigi*73jux3 pyproton?

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 comqlnq)6)e -a azmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces 6le)a qa-nz)q them apart until the 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 3vwqmi-u7h fx4 zsl7 s/-(pq mof +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nuciq/qu-ms m-374pfx shwv7 l(zleus?

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 dir,,b gscrx8oajr0szb-5v w;x4ection of the electric field at a distance of 1.50 m from a 50.0-nC cha s s4r-xb; wj o0,,xra5bg8vzcrge?

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. What r vgn+9.mvwmkh j/28 vis the magnitude of the electric field at/hkv.+rm 8vv nwgm9 j2 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 chargfq-,mym*w h0 9qqbxw 7h (*ghve. What is the direction of the electric fi(*0hqmy-v 9 wg,hbx*qh w7qmf eld?

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 )ox uzody. 0fjuo2;vw3 *ete4a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the 4eoe 0f2 t3) d*ozuoxu jwy.v;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 a value .d-ef1*a zy.i0 *ivf ny(rgj kof 3.0 C and are separated by a distance of 4.0 m. What is . (figy.krizjya 0*1e-n fvd*the electric field at a point midway between the two charges?

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 a(m -id7-*y3 nnx yud1w0x7cv xj9qr wvt the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the elect71-(x y0djdw vx 3-*7n9nm v rwxuiqcyric field at the 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 placek ailty.9a0tz ,1ciril72op- d at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two char1 p- ,yki.oaz7ti0i2tallr c 9ges 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 h4) u cdcm,c bgk7(hgipuiv;9v6n)f .gc m90d= 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betweecv; (k.c,7 nggg 4budh u9ipcv0f))m9c6 dmhi n 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 ab w1,;kft+gv 5p;eu dit the three corners of a square of side 0.50 m. The last corner is occupied by aek5w ip u1+bf;td; gv, -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+d.l ,rq7 d2 nc l9nc2whos2zx are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at 2lzd.hl 2nxqcrs 2cn +d9ow7 ,(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 mypw o5i:p b 3d)zqys.j jb2,-kC when it is placed in a uniform electric field. What is the .k)ojspb,5jy :wbi-32yqz d pmagnitude of this electric 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 charge of 4m -/wop3y :lfbvi) vip h;r);x.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 field of 6000 N/fw5bn8mic2( vzpss,37l7my zC pointing downward. What charge must be placed on the ball for ityvwmzfs 7s,mp7lnb z3i5 8c(2 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 ka1 7lwbb:b4 hcarries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude abk:174bbw hland 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 carries a charge of +2.0 mC. What is the magnitcd lx52 s/-ngmude of the electricxg2sml-d nc/5 field 5.0 cm 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 2sa osmi9 (3v:i.0 cm carries a charge of 3.0 mC. What is the electric f(o a3smsi9:i vield 6.0 cm from the center of the sphere?

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, 2025-12-11 15:12 , Processed in 0.474248 second(s), 186 queries , Redis On.