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 conservation of electric charge.886kwj v-niz v
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 cha3sc.ed,9f45l;fvkts htqj c 4rges 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 positive and a negativei*dl(:5fnm d f 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 piecp)k2+.xjf,yomc4kl , dt +tzur vl/ q-e of silk. During the process the glass rod acquires a positive charge and the silklq to+ l.f4,,- 2dzm/r)+vp yjxctkku

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 showstkn osshjvpa ,v53-(un o,s* 8 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 u20h )vl-ugeeyu8thec75- u 4etjyegj..f)p 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 elect5 5,. lfysj+y6lwx bnmrons than 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 tightly tj9mfly-i 30hi o the nuclei are referred to asi ym9 hjf3l0i-

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 looga0eoebv,*q qb t7xo/7b no2l z+z0 x)sely to the nuclei and can move about freely within the material are referred tb7e obzxe+aztq*oln 0,o b/)v q72x 0go 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 ul1zl3;tdbz q+mjv *-rod is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charge +ljl ;1bmz*dt-uvqz3d 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 positive charge, anl 7kmcs xw7)p3d sphere B is neutral. They are placed px7)c s7mk l3wnear each other on an insulated table. Sphere B is briefly 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 charge an electroscope po0gil s;t9 hluy hyu;y*4t ./xositively?

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 electlt/;vegh6 9 vttj+6qqt3qk6w roscope is briefly touched with a positively charged glass rod. The electrosgtvt 6 vk ql39/eqj;t6+whq6 tcope

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 brieflyx j6rm r/ngfm,l)5 ei6 while a positively charged glass rod is held near it. After the glass rod is removed, the,)g6jrlim 56rmx / nfe 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 electroscope, and the ll-5(sc8yny wyf v5+ggeaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happe(v5snl8c5g y y-+wygf ns 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 izm 1ta)8 n2qris placed on an insulated table. A neutral metallic ball roll i)tz82nm1 arqs 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. 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 Cou:pigg3ha+ x3hlomb 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 distance d. The fdu5z isd1xyn 3xzv */8irst charge is larger in magnitude th13/in *5 xds8zxvy udzan 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 sphere B -uiwj kn;z+lnnn487gmya4 ((jix1 oiis neutral. They are placed near each other on an insulated table. Which statement xo na-i1wnz;(nm8k ( j i4yig4+nj7lu 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 cert8/bqrqv 8 5m.qckl oi1 0cpwg0ain force. If the charges on both objects are doubled with no change in separation, the forcewcb5o1 8 gm0v8iqpcqk /l0r.q 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 e s2xmju;tz8 un;)p3qpl yc* +uxert mutual attractive forces of F on eachu;u+ ljscqy;n um)z83 2xpt*p other. 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 each other with a force cul:* sq.n0ysF. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers .sns:qc *uyl0 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. r 9mi5t 7u;toe What happens to the magnitude of the force oui;5t9oe 7trmn the proton if a second electron 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 b6gvn2xm8 5giyy a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the protonngm2vx i8g5y6 ?

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 distance of 1.0 m. What happens 6hsi .xsd/jw rj, j* 2id6ikq1to the size of the force on the proton if the electron is moved 0.50 m closer to the prosd* dq. 6, hr2w 61sik/ixjjijton?

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 e bc87d d4z+cwcenter of a square. When 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 the net electrostatic force acting on the positive charge at the cen 74czbdedw c+8ter 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 e7n ayhc v5)h/ikiz: jj//;nubed-)mmquilateral triangle. 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 due to a thi )nvi7/j: -jy chzim/ nuebma/5dk;h)rd 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 vectf ;.++2+tkeedg nws bv jl6b(oor?

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 nb60: mk4 6lez4uu adlcharge, 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.qzd*yw/ bj wok-bqt- 4r8ee (me00zw electric field value between a negative and positive charor4/j b- 0-zewem.wqz 0t(8* wbeydq kge along 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 two positive charges q.qyr2 ./-mgege e ;ghy 1y7sialong the line joining the two chares.yq;hgmygeq1r/y.- 7 gie2ges?

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 nea s4q 41pu n3vkifo+ukiq;)(qo ;wc.z kr psitive point charges

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 shown bud + 9nd)f(fq


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 intersectd06-bjpdbi -e 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 metao6)i l9wbd.bu l in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric fiel.bbl 9odu)6iwd 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 hollkhj.rv n jo2,4n535 gl ,i+cqxld h3tiow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the gq34hnxrt ,hk5nvc li,+ j3ldij52o .surface is

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 wh/jdd,cc d;.law*f 8 eeere a uniform electric field is directed straight upward. What can be said e. a8f dlwde/jc;,*cdconcerning 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 equi:-w: 42k,ftbu;kixtw w in;jslibrium 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 spci7i,xhiu ,igm);h b; +di5 ythere that is grounded. As compared to the case without the holg ,it xibiyi75h;d,)mh+ i;cu low sphere, the electric field at a point directly 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--: ttds31.tvxzl;zztt g7m k static 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 j8,oj-pt++p1 ;in mnqghu 9)zisuwh :electron 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 +2o o2f)tw )m1dd.00 mC. How many more protons than electronod2)m1ftd wo )s 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 onxyp1klu vd,*( 1 kg 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 ef yxi18i:)csi ocp,0 charge 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, havce8lct0 0 zho)e charge values of 2.0 and -4.0 mC, respectively. What is the magni0ct0oe l8 )chztude 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 the force between theminfk :mmt17qhnqy/v; kl mh12ixg1 op13p 9( d is 1.0 N. What is the magnitude of the second chargemh1 : 1 q3nxfl91i qtivkhg1o7myn (;/d2 pmpk?

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 the tzx29-p;f*ty4qus q pm 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 8x,x x9ywc8 zbxbq8f0$30 \; mC$ 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, innj4j8f3z f 2,z6oom,w i 7uekritially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation o6ojz7f o4nik 2,,8mfe urjzw3f 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 chq/z hb1h o,k l7hva( 4wsax )(y514uowcvgx 3garges of 2.0 mC are placed 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 wyosw u41,z/h 5hqvaxa( g1hxl c4bvo7(g)k 3 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 placed on the x-axis. A charge of +2.0 mC is placy 1+.w*3 bemtmu 2 z5k hifa;wwp:-defed 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 52 3z bhmw+ dty:-fefkwwaip*m eu.;1force 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 following positions: toz3k54qaa k3.6c ph kQ1 = 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 of the force on th5 6kha 3 zkcp.k4atq3oe 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 nylc c5km*,3jjybp 7lm(7 mh;r *:xk pplaced at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed 5hymlljcc * , 3mn7(b*7r px;:k kmypjthat 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 n3ku(o01 .xjsnyjssj5 C is at (0, 0). What is the magnitude of the net force onn0 5 .jsou 3xjks(yjs1 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 (0.1b*met4jj b9z 30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction o9 1jtem*bj4bz f 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 nkm,v0vh2 h8 iplaced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which anv 8 k,vm2hi0hcts 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 2o( yyemusk+mm;;dtz;(,0 bo v m6 pcdof +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two 0(mkoy,mod bsm ydvmue ;p+;t(; c2z 6charges, 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 oraaool,c8-*px)pa) qpyez:1w .)quce igin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it o a)appa-e z1*c8yoqlq) .ceu x, ):wpis 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 charge -q is pla pcvt;v4u(e gg;ai u80ced at x = 2a. Where can a third positive charge +q be placed so that the force on g(tp80 ;v;cuue g4v iait 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 mjngu fkey.8ess,sa -o617q. mass of 3.0 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 agai .cr h/*11clo 2srp 5hdcdc;rmnst the force of gravity by the attraction of a fixed proton some distan/cpr2*h;s ol1h mrd5.d r1ccc ce above it. How far above 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 nonconh/ q 9cgsmf51vducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repu51hvq/fmcs9 glsion forces 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 of +40e. ivhj/.5g g)de What is the magnitude of the electric field at a distance je /d)gvi g.5hof 1.0 m 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 bbqiyxjo02kx* 3anl6sx .5c8 of the electric field at a distance of 1.50 m frkq. 2*cjlsxy xn0a b ix63bo58om 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 hm.w.v,wia2f from a small test charge. What is the magnitude of the electric field at the locwi.wav,m. h f2ation 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 direction of th6ul hzgz3 8of8z u+t9he electric8 g38 zzlo+zuh6th 9uf 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. Whd7 :; kjwfgq .wz4dyg.a6una 1z5z5.lqsn c,cat is the magnitude of the force experiencezkn1;cu: q.dql.5na5 wgsdyz7w , .zf gaj4c6d by a 1.0 nC charge 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 a value of 3.0 C and are separated by a di4s8aax *g6 w,x;/v jyfcgdbw, stance of 4.0 m. What is the electricv,wyxj/6faxb;sadgg8w, c * 4 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 at the 0 cm mark of a meter stick and a -4.0 mC ci x;(5fv i17u-w:(jovyviewsv ) i:t qharge is placed at the 50 cm mark. What is the electric field at the (1v;isoj -wvvq): v i7uyti5 ei:f(wx30 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 ,8c xyov7*0z,h mo :tyqrj.y olg u;l;mark of a meter stick and a -4.0 mC charge is placed at thcyqg l,ox*:,8; ;7lmotyhr. zyo vuj0e 50 cm mark. At what point 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 bx0v,o -4 l1vyjf0leb are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midwaoejl f-lvvx b041y0 b,y between 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 6kn mwem3(pt- of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cente-m3n6m(k tw epr 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 are placed8wy mrx /n, i6as6ewa8 at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (m x w/i8y8wseaan66 ,r1, 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 ar j3n/ n)4dfwi charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of w /n nr34i)jdfthis 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 4.0 mC has a mass cdlf1vn)f :pqpod v t3xj) :24of $5.0 \times 10^{-3} \; kg$. 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 o8(r q+qjx kr0of 6000 N/C pointing downward. What charge must be plac k(0q+8jqrroxed 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 ball is pl6(bu g :zyhr vzf-i+:saced inside a uniform electric f(grs vhiy-:zzb + 6:fuield, 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 carries a charge of +2.0 -bg6b g+l* ,n3lt z qic*cekb so8,ub0mC. What is the magnitude of the electric fi6gb cq 8zeiob-,tl*k3gbnl0+cu,b*s eld 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 2.0 cm carries a charge of 3.0 mC.a+ cygpmtx*la2s9 wbd;qm2(: What is the electric field 6.0 cm from the center of the sphere?w;a tpy:lmm 9qcd+sgba*x22 (

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, 2025-11-29 14:39 , Processed in 0.480914 second(s), 185 queries , Redis On.