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: 匿名未登录  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 chargd.b*tf q fvy4w6jh:z5e.
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 tq w2dp/y c;lf.ev/k,af ix y0*o 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 negative charge to attra xt4upph70 ;il z ;v;twxf.t/act 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 the process the g.qqueht *5b1r e(sc1izj /i7klass rod acquires a positive charge srkqu 7e*j1hz5 ./ 1eicq ib(tand 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 show6m ae;oz;id,0n9kkgpr hko1 l(2 a/gis 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 .m.pry*c 8rya - krfd)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 electronsupzcg3o/a ,r u+4d e4d 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 mgj1qk l1e;p* to the nuclei are referred to as l;1m1*kgqjep

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 az+w(f55ykt+ y:wkj hteq(dr 1nd can move about fr (dh(z5kw+ty+frj1eyq5 k :tweely 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 nealf4)dqdd-k 5k7c3; bv /ogkzvr one end of an uncharged metal bar. The enkdgbqzc v v7l5d-k)/3d4k ;ofd of the metal bar farthest 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 positive charge, and sphere B is neutral. Thchxzc r8i sokz-),.1 mey are placed near each other on an insulated table. Sphere B imiso. rz81h,k-x)cz cs 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 positively?obrb l3ggkx-(; 5) f ;yhmnv+q

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 electro; 46aq0zqs n.l1ueer yscope is briefly touched with a positively charged glass rod. Theq4 q; z1user0enal6.y 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 while p(bkq7o v* g8da positively charged glass rod is q(kb7*pgd o8vheld 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 elew5s9 zn0 *nrwmt/*ragf p4h m/ctroscope, and the leaves separate. Then a negative object is broug*nrwt*/ rm hn45m fsa0gpw9/zht 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 *w0mey.n qtuk+ 3w ds.placed on an insulated table. A neutral metallic ball roqm.ued0kwny s *t.3+wlls 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 Coulomb constantkapdh4ajn75f* w2dk1 $k$, 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 separate6d sx6u9l.4votwan i) d by a distance d. The first charge is larger in m wx6i .)69nvo ladst4uagnitude 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 sphere B is neutral. They are placed n(l.b4qbd8zkzw r(az5e5 i h) kear each other on an insulated table. Which statement best describes the elbd8 qkz .a 5e((i)krwhzl4z 5bectrostatic 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 w;r4-l hs vi)rzith a certain force. If the charges on both zh rv-4rs )il;objects are doubled with 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 ato)ahbwk2w-dc. ) pqc .tractive forces of F ))p ohkba2. ccd-.qwwon each 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 zda j4pk8r/ s0force F. What happens to the force between them if one charge is doubled, the other charge is tripled, an0a/ds48r pkj zd 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 qn6a2 cj;)t0omudxx 9m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first elect 2 unaqdx;tcx)0 jmo96ron?

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 distanc/abajfp i0waf1wgz4 t+2 gv8; e of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is plj8v pi0 f/fb tawgz1a 24;w+gaaced 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 distance of 1.0 m. Ws da):.;ehdoe xy1m03zv sl9khat happens to the size of the force on the proton if the el0s:xo.1 3mlseadhzy;d)9 e vkectron 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 squne *n;,w/g2hettvaxfs rw45mi +*ar :are. 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 threane+ : m;x vge rtr2fi** wa5nwht/4s,e 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 placed at the centroi v8byt(b*gm9kd of an equilateral 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. 9t8bg *bykmv( 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 vecsis3g8.piru) h8q 8lctor?

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 charge, the strength of the electric fiel 94h8tx.dx1wi:dj;y(hgv s rjd

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 aqsz2 bg4 7:pbm zero electric field value between a negative and positive charge along the line joining thpgb qb:s7z4m2 e 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 valuz* ,7xr z3xisie between two positive charges along the line joining the two chargesiz * ixr3x,z7s?

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 poinrt i/d6dn 0r dnwc1p0+t 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 showom :zczm0ci0 6n


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 frj s*5.o 0mdmpeee 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 equilibrium is placed in2rae*y0cs lo cf /5qk+ a uniform electric field. Give a statement concerning the elcca/lr 5 *yfe 2o+0skqectric 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 *k oag3;hcs *,(7c.cxjhlajda hollow metal sphere of equal diameters are each given the same cha;3c,gaak 7x.hdc(* j* ljohcsrge, the electric field (E) midway between the center and the 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 where a uniformb,e o0.4hyl xh electric field is directed straight x yeh4blh0 .o,upward. 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 elect9y: 3 hx :2-fgl jyzi1np:e;foijfq 6trostatic 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 tha vz*b q2wef.okk, r ;;+vjr,.apcdvq3t is grounded. As compared to th;ka*f,+rzcq v2o,. jrve ;.wvp d3 bkqe case without the hollow 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 static e 4 slnu6ucba7*quilibrium.
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 onox(- j/kes: 6lt0/mkawh s5cel5 t (eze 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 u)dp;y, 8k uwb, f x-)yhgh3cgcharge of +2.00 mC. How many more protons than electrons does this piece of plasticpg8u,,xhud g wyc -hb;f3)yk) 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 o/u9z ko /)h dh1hi -hneel(r;yn 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 charge ofdw g7;ulom x,8 6wb/oz $+40e$. 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,t 0ulk9a6c4ihkvrl8 of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forceickutl, ak0r8 vhl964 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 h 6tic(rs v5-295dl 0xj x(o5ilbylhxbetween them is 1.0 N. What is the magnitude of the second charge?xl9vl(hi i-0 55hxj5xcrtobyl (62sd

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 1.0 N. How far7f0fwix( vwfuf n01y)oqs a-/ 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 uyz(6x1kajr rr n, *l ,)(rbsv$30 \; mC$ 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, inrs 5b54r;hxnumo7g4u itially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation u7hgxbsr5 r;4n 5o4mu 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-axis. *o yh9rw (xk7vzse6 1r 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 force which acts on the *ry e(7zsho96vw xrk1 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 ow f:/kj;01- luwot cyof +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, aoywc/1 j-w ;:u tokfl0nd +4.0 mC 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 following positions: Q1 = 2.00bk /v3s vsl94t 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 bs l9 v3tk/v4sof 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 center of a sq/zg9apg8 - gg(gd:iz xuare, 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 aa zg-gz(8xgd:pig /g9cts 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.g x.cpi(5g7ro3wk. rg) ew0 tt30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the p3g i.t rcte.gw7o)g(k 0wrx5net 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, m lte2o30c yub s8cp(5 rj0al+0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction tm8 52rucb c ploy0j e(+la0s3of 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 placed at the vertices of an equilaterbj 1s ,xp*p)t iw.m9udal triangle which measures 30 cm on a side. What is the magnitude of thwsutx dj9bm* ).pip ,1e 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 +4Q, whi91x o.xb16 wpgag(xkfch 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 elect xxgf.6(g1a kbowx91prostatic 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 anyul,1g, r mh1 ttn-4iod a +9.0-C charge is at x = 4.0 m. Where on the x-myrhl 1-t 1go4,utni,axis can a third charge 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 atlx8gb/ddsa3s.lu +i9tz 0t 8 p*o *pcf the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the dlptz 839xo*b +.suc0/dts gfa li*p8force 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 f2 d ;m a.5w:fncjtk3hmass 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 against the force of gravity by the attraction oee8wz84z-y5ty-fx q r f a fixed proton some distance above it. How far above the t -5f8q4zy8yeewr xz- 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 w4y5ify x ya40from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart unt5x fy4yaw0y4iil 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. What is the magnitude of the electric qvswk6*7g d7 efield at a distance of 1.e6k wqd7gsv7 *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 of the electric field at a dista+zi ut4vi ,+by28or/pi3zr z qnce of 1.50 m from a 50.0 to23y ,+riu+ vii z4rzbpq8z/-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. Whatlm3(mqur *(--o h gtbj is the magnitude of the electric field at the location of the teh*-tmgolj3( u br-mq(st 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 the i mmtb,fd, v g8 hj-52bvb1u,delectric5 j2gd8b,v-thmf1vb,du b m,i 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. What is th5e atbv;9 9tfee magnitude of the force experienced by a 1.0 nC charge placed at the locativ95et;b t9faeon 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 valu3opm1yc3lrq*nu y +,5y fu1 ize of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway 1fy1+y ou3*3ruz q5,ilc ny mpbetween 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 mfk/ 13vabwmc,ox5nk c m78zm.eter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mk1x7 vf.b3wmn ,zcmo58a /kmc ark?

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 stick an ez 8y(:f* ddtrxoog02d a -4.0 mC charge is placed at the 50 cm mark. At what poinodze 2o dx:(y8rgt* f0t 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 k h,**,jx.:wqkf7d b *gs +h i-pgawwq= 0.20 m. What is the magnitude of the electric field atkhg* *pfi+7*jw,:swqbg, -hxa kdw .q the point midway 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 t*:y8coby3iky j 01*5vt ep*l(iuy xtghree corners of a square of side 0.50 m. The last corner is oc0*yyg tyie :l (vp ui x3by*k8c*15tjocupied 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.thsras bfp z3zm *w8 ;h.c dny)45b9gp,ih4(o Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 s5*wydsp4zf)hp ;9 ( z. hrcha ,3o8ib4tmbgnmC at (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;8nx:ljjn n ;y on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electr8xjln n;n:yj; ic 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 ma(tg+ 5z ):seizj2s sboss 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 0.12qbjqpq 0l 5p( g(84alz0 g is placed in an electric field of 6000 N/C pointing ag5b p (pql8q0( zjl4qdownward. What charge 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 ca 1 gdq7khk:.gyrries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the forcdkkh: q1ggy.7 e 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 carrie vp)z( 2wfnxc)s a charge of +2.0 mC. What is the magnitude of the electric field 5 )wnpf)xvz(2c.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 charg8ff9s wdwm+x: va wd zi8ihl6;tor7 68e of 3.0 mC. What is the electric field 6.0 cm from the center of the s6tf ;ad9zw86wsrmo fiw li+ 7vd8:hx8phere?

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
    本系统支持习题练习,作业与考试三大模式,作业考试自动评分,成绩排序一键导出,可设定动态变量同一试卷千人千题
    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|使用帮助|手机版|切到手机版|题库网 (https://tiku.one)

    GMT+8, 2024-12-26 16:24 , Processed in 0.435581 second(s), 185 queries , Redis On.