State the law of conservation of8g,k28peeks l8z3pvf da:k1 f electric charge.

  Is it possible for two negative charge: ei 642vstmxcs to attract each other?

  Is it possible for a(ql(f)-+3fzbs jjslvmi1rj 8bo8b7 c positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glab/bi-pbtz( m6* sjic8n-gdw. ss rod acquires a positi(i .*pim6bdc/sb t8jwbz-g -nve charge and the silk

  A proton carries a

  The model of the atom shd2d/cnk g;as-ows a

  A neutral atom always hatfzdu yc3n14f lygi v9-/ 1mc7s

  An atom has more electrons thani+i hl, ;,slr*l9tawn4bw(c d protons. The atom is

  Materials in which the electrons are bound vyd- vy/ 7h8mxyery tightly to the nuclei are referr8yh7yxy- v/ dmed to as

  Materials in which the electr wutk-a. limd)x+b95s ons are bound very loosely to the nuclei and can move about freely within lmx wtd.a- ku+sib95)the material are referred to as

  A negatively charged rod is brought near one end ofhm 7 ri(e7r t8wohg(/j an uncharged metal bar. The end of the meta7 t h(me8(hijwrg7/r ol bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. T +s+.s8 cwc 7bwuo9hm o2ua+onhey are placed near each other on an insulated +2s awocmc+8 u.bu 9ohon7w+stable. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an 5t//t)olksvq ;oe ,g*wmm tg)electroscope positively?

  An originally neutral electroscope is briefly 1yh *nb4npa-zi rb (e3touched with a positively charged gl(*n4a1 n iz b3pye-rbhass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a pozz m-0:1 m( zh 3yobwuate0,znsitively charged glass rod is held near it. After the glass u3(e,zzm 0z- 0on zy 1wmb:ahtrod is removed, the electroscope

  A positive object touches a neutral electroe-r2i. /lj oypz. ihksm(fj 1:scope, and the leaves separate. Then a negative object is broughlf.:-/i j.zkrsh ojmy2 epi 1(t near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object i(iwak kr+;ars:e; 9u rs placed on 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 negativ:r;ues(rk w+aakr; i9e object. At no time does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb za:wuiz bfwp/53 qa7a. 6l c0c2ii0my constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distab+3k 5vnghn r*nce d. The first charge is larger in magnitude than the s *n5hn grbk3+vecond charge.

  Sphere A carries a net charge and sphere B is neutral. They arefv:-dzxyzw.7fe .eyqkp; 7x0pv+w(f placed near each other on an insulated table. Which statement best describes tv e;+z..7y0x f(wf:xedpf vp7qk-wyzhe electrostatic force between them?

  Two charged objects attract eac .z,/h-r mva5j5 xp+(zig zpsth other with a certain force. If the charges on both objects are doubled with no change in separatio(m a/h t izj5 xr5pzvs.z-+gp,n, the force between them

  Two charges are separated by a distance d and exert mutual at q /r:xe6z/ f jz4ze66nrpv1lrtractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new/6/q6nr f:z 1xvp ejzlrer6 z4 mutual forces?

  Two charged objects attract each other with a fuwx6nv fl:m + zy,(nbwqk7rxn5l3c1 n u+)nm)orce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their cente 67nzmwwvxnk5q+ rm,nu:cnbly(+3lufn 1 )x )rs is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. Wi7-y/ d 6qfza22fkv*fu tu6f*y9pgh bhat happens to the magnitude of t2b *tgy 7 khi6ap-9q2uzfy *ffud/f v6he force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0dne :s.j6 b;ueiv33dp m. What happens to tpe di3nvube .;:s d63jhe magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance ofp c 30.wp0uc+f)e1 b2xqahtye lf2-qt 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.1h20tppey ebu lt )q+ac f0xc3f2-wq.50 m closer to the proton?

  A point charge of +Q is plac.0 5pcfxlc+y4 k- qxsqed at the center 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 t- kc+q4 5xf qspc0ylx.he net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q i,r8oajszt xq j 2.x6gvlb-+b5s placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic f.ltz28r j5svgb- b+ jqoxa,x 6orce 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?

  Which of the following is nxu, 1ab61ok qcot a vector?

  At twice the distance from a point charge, the strength of the electric fiel 9qwi2p6e m r-,tihek3d

  Is it possible to hai)tn5 if5e 3dat/toy9ve a zero electric field value between a negative and positive charge along the lity )di5f3n9a to5i/tene joining the two charges?

  Is it possible to have a zero electric fiel d z- ld*t8qbsrgy)5y3d value between two positive charges along the line joining the two chargygb3) -*zyd lrqst5d 8es?

  Electric field lines near psitq3 ,w9u: +ftof:dpmbt7v 3(z pza j8yuive point charges

  The electric field shownedca (kib0w* .xb5yh7w9 fwj ;rt.q+d

  Can electric field lines interse2ev/qca7 k- lt.z;1zau oy/u68ly hcg34isuact in free space?

  A solid block of metal i-eee lsfsu2zgt9l3 v4x -+:tin electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the e3x9 tz gsl2ei+ve-:-tls 4 feulectric field in the block's interior.

  If a solid metal sphere and a hollow metalzm z5-apj0wh(d0 m0tr sphere of equal diameters are each given the same charge, the electric field (E) midway atmm(p dwz0 05h0zrj-between the center and the surface is

  A cubic block of aluminum rests on a w / *wkszvqb- o t phplh(;m/*wqq:o49qooden table in a region where a uniform elecqqp-ool4m:* w h z9qtk;p *bqswvh(// tric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an ele-h pz zv+8 zp0a-9d(aixo8g:kbehf 5fq0s9 kdctric charge

  A positive point charge is encl90ss5vv-q ;xu c*poixosed in a hollow metallic sphere that is grounded. As compared to the cass-5*;svqx pxi9 0ucvo e without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of condunum mdwnvs3(,k* *vh ,m0h3qe ctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is m)):a wj;t9e(wg ls)rx(7 f5myngle p $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2.00 mC. How many more protdn.uo *z,4-d dw )drluons than electron*n ud rzod)l-d,.u dw4s does this piece of plastic have?

  What is the charge on 1 kg pbx+qifwjjs6-4.w1osx,2 hz of protons?

  An atomic nucleus haszu8mh5h:o /0pql7ny fw:b s7v a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, have charge values of 2.0 and uf;j:cl 39n ;u*9mwobk3,ih+zx 0; aryvvrg s -4.0 mC, respectively. What is the magnitude of the electri ruzxy,; v+ir03 gl;hawbcs ujnv3*m k;o9:f9c force between them?

  A 1.0-C charge is 15 m from a second charg9 aypvc7pp:*p: n*fw6tmrd4 ee, and the force between them is 1.0 N. What is the magnitude of the secon ca9rp 7feyppd*w:6n* vmtp4:d charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart aacmvy++/8bpu,l op zrfb2 +w8re they?

  The force between a g h2n0ot / . hwnbm3qsebm50x5$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apartyfqc.md:l3ya u5( -jv, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the eleclj5yq .v3-y(uad :cmftric force between them?

  Three identical point charges of 2.0oav+-aj(2)bnsr j-dd mC are placed on the x-axis. The first charge is at thej dsrja)do +(-- nv2ba 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 charge at the origin?

  Three point charges are placed on tf ,rd5mb0i b4c eg+ ay,w.+pmqhe x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C cgmf rbpb ,a,i0+ .qdm54e+yw 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 at the origin?

  Three point charges are loca 2m5(qus4uy7eea i2xz ted 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 magnitude of the force on te4izex2 y5 7q2mas(uuhe 3.00-mC charge?

  A point charge of +Q is placed at tha(:n tq)k wi6 n6c3pobe center of a square, and a second point charge of -Q is placed at q pk 3:6n 6nt(ib)cawothe 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 acts on the center charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Qn ;rrf *o.oh +o7mv.2zhd 3d9xdqq n3e3 = 5.0 nC is at h9; 3ovon.2dd xh +3o der7fn *.mrqzq(0, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0cmby2 suc4/akyc .*-o6u sv.j.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, b c-s sy4c.u*jkyam26u.o v/c0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at th39k5(flo idhltz7 l8ue vertices of an equilateral triangle which measures 30 cm on a side. What l7hlt 8ufk5d9zo3i l( is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whitbb,v( g-7 vshg0ge e5ch 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 thbgv(ve5g -0hbg 7t ,see electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and *-g2b8c n;qol mm;lixa +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be pm-ll gqmcx8;*o nb2 ;ilaced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. 2lp v/q06whlh Where can a third positive charge +q be placed so that the force on it is zerlvqp/wlh2 h60 o?

  A copper penny has a mass of 3.0 g. A totalm(++n pap6quw 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?

  An electron is held up against the force of gravity by the attraction of ag h;;/j/ mznhzmezaq46u/na 3zx :n(k fixed proton some distance above it. H:azq hh 4nn(6jm/ nxekz a;/ u3gmzz/;ow far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a com/t +p9.q+b ohstzb4mcmon point by nonconducting threads whic.+p/+9 cmho4zbqstt bh are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnit+4bbopf z/ k.zude of the electric field at a distance of 1.0 m from the nuc/fzo4+k pbz b.leus?

  What are the magnitude and direction od1v/h 2 kd 8k87j6 fkoxmxn.uwf the electric field at a distance of 1.50 nko7k2xdwvkh.8fuj 6/md x18m from a 50.0-nC charge?

  A 5.0-C charge is 10 m fromnq9qbnwv2h e4) vo+rxx;3 p8/eb g smgd9c f6. a small test charge. What is the magnitude of the eb9 h;vvr9n8d bgqcw/ e4n6x)gp +o3exq2.m sflectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test chasrjkldg39n:l8 . 3lvg rge. What is the direction of the electric fi:ls3g.9g8lvrlnj k d3eld?

  A 5.0-C charge is 10 m from a small9aruzowa0wptjbo2,*m11p /q hj6jtj h+ j 9x 4 test charge. What is the magnitude of the force experienced by a 1.0 nC charge place zh9w10ow j j+tp,jmub 649aq/a2j ho1xtpjr*d at the location of the test charge?

  Two point charges each have a value of 3.0 C and are sepe4f1: lrzij kn2*h dkok, kg;7arated by a distance of 4.0 m. What is the electgkikjo lf:z27,ne khrdk 4*;1ric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter st)r n6:sh m1zc*fdxs6lick and a -4.0 mC charge is placed hf1*mlxsr sz6ndc :)6at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm maeld) aer-dbxix -d) ,qvr.n 8)rk 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 charges is the electric field zerxd)ln vxe -ia)-red8r d,)b. qo?

  Two point charges of +3.0 t kc wdr4c6e8q2izwz0v2q2h3 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the q2w6c 3v 22ed zr8q04zchitk welectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of;vb( f0 )*cixe +sge+hud .arh a square of side 0.50 m. The last corner is occupied by erds+0x ubha gcevif. ( )+h;*a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 ope3lfo: u;ye y-8o*i m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); -3.0 mC at (0, 1 uf8;oo:y-e*li3p eo y). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a chargfb :6k/yi,.9h ep 2mp*u hxjhee of 5.0 mC when it is placed in a uniform electric field. What iu k*pexmiej6:.2b h9hp/y f, hs the magnitude of this electric field?

  A particle with a charge of 4.0 mC h9 k ibn/.a/hiyna.u m.yt c4/ras a mass of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is xchdsw1 : mhb5-o( ord+-0l plvqe k14placed in an electric field of 6000 N/C pointing downward. What charge mustr veq cs (h1m -o4wll:odxhk +50d1p-b be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a fe dw2g2 ye-2icharge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspeni2fe-dwg22 y eded against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charg tfr e 4umn fau0n,4e56d2yv(oe of +2.0 mC. What is the magnitude of the electr(5fy6unde 04tur avo ,42 fmneic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is t,/g tvndg;;6mg8ob zohe electric field 6.0 cm from the center ofdot,nm;6g/bog zv 8g; the sphere?