State the law of conservation of el5 zkp;bot:ix .ectric charge.

  Is it possible for two ne- yc 9a 02l*vv*pbntwr 6.t8yegebwx wtj 83;sgative charges to attract each other?

  Is it possible for a positive and a negat1 2k)bl9 f mu,zd9bnl keoh8-z+to(hmive charge to attract each other?

  A glass rod is rubbed with a piece of silk. D8 f.sbr 17tepxuring the process the glass rod acquires a positive chartfp 1s .bxre78ge and the silk

  A proton carries a

  The model of the atom shq2w3b whh.+k ersb te9p 4b de)r/+*lxows a

  A neutral atom always hasso1nxzitlge.)j 48xow7 g s.:

  An atom has more electr-h)o m+s- t2ebkwy ;q o,uw(bdons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refei)y zp(85nx ke2ei es*rred to a )se2e5(e 8niy*ikxzps

  Materials in which the electrons are boubr0tsn/2ig 5 pnd very loosely to the nuclei and can move ap 2/5 ibsrn0gtbout freely within the material are referred to as

  A negatively charged rod is brougd-i i)c1lswilv8 0 8mhht near one end of an uncharged metal bar. The end of the metalvdim ) 1is88-wlc0lih bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is ne*sl a( lsfd:y* d)b6qhutral. They are placed near each other on an insulated table. Sphere B is briefllds(6*y f :h aqdbs)l*y touched with a wire that is grounded. Which statement is correct?

  How can a negatively 1 2pem6,px 3dht bslwti:)l2hcharged rod charge an electroscope positively?

  An originally neutral e.3 bgpiklya/:n8v ec6pbatz ))/ x1iglectroscope is briefly touched with a positively charged glassb8tiice lxy:v g3)k /6n)gp1z.bap/ a rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively4 yos(0lwbu: gymvq2 5 charged glass rod is held near it. After the glass rod is removed, tyy 0(b lw:v2gum5q4s ohe electroscope

  A positive object tos+s tg26ih ak(uches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happensgi ks6(s2tah+ to the leaves?

  A large negatively charged object is placed on an insulated table.x-ce wp*qaea cw9-:6cyjkidj k:10r1 A neutral metallicj1d0c ixk6ara : *ew--:ep qyjwcc 91k 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. 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 consta7e8 di)xw1d lflr17emwml- b 9nt $k$, which appears in Coulomb's law?

  Two charged objects ak z/z:/qrfw./7 gxoraa -3sfoy ba+ihy7+p p9re separated by a distance d. The first charge is larger in magnitude than the second charrpy/k+fw-fab a +79i./ z 3 xro shgpyo:q7/azge.

  Sphere A carries a net charge and sphere B is neutral. They are placed q-t)weh(m*6l0:pymefpxymv3;q p * z near each other on p;v)qmp0m y z-6he:p(lmfqex 3 *ytw*an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each lpt8ew,eg/4r*l* gv2 pqk nf -other with a certain force. If the charges on both objects are doubled with no change in sepaql -*nk,p t2elpf gw*/rgve48ration, the force between them

  Two charges are separaq n;h(aog9je7 ted by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a de ng7q;a o9j(histance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to th)zyz) fu; lyu(fl+*ryd bhe:; e force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth ity (fy+ u:fez);zrllu ;*hd by)s original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 5 ; oq93om-meqw7xpecm. What happens to the magnitude of the forc 7e;em9q-mow 35 oqpxce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a diu;p8v :vm(w enstance of 1.0 m. What happens to the magnitu(wpv u:vn;8em de 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 dwjf(12gkpt pp /k(2wdob* w+mistance of 1.0 m. What happens to the size of the for pptdmgpb(kkf2w j*o 21+/w(wce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed ame4y-cs*cg )wt 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 the net electrostatic force acti4mgy)- wc*c esng on the positive charge at the center of the square?

  A point charge of +Q is plag 8 hbb; znux9 ;qhnl(2ea2s*xced at the centroid 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. What is the m bnu bsglh xehq*an2;(2;z9x8agnitude 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 not a vecs eeviea ;.1j9fikb f4s:awpw7 v8k/8tor?

  At twice the distance f(fg 2qkz +l;;r(ieq uashmx6mb gs;7(rom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between 9rob6 (sak)fn0 exd x1a negative and positive charga9kd osnxfx0b)re 16(e along the line joining the two charges?

  Is it possible to have a zero electric field va.n:hanum 2v*3 wil et;lue between two positive charges along the line joining the tw e2wt ;3huv.nmanl *i:o charges?

  Electric field lines near psitive point ,j kl7 +sx-ei5 ic*ct40glytlcharges

  The electric field shown(qsccd(u wg2 c./)7w i auc-mo

  Can electric field li4)4cz e/ fnlrynes intersect in free space?

  A solid block of metal in elecimbcwbm ,n8 45trostatic equilibrium is placed in a uniform electric field. Give acwm 4bb5mi8,n statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameterrf,tdd y-nhr 339 u3s6lalb q/s are each given the same charge, the elech6nbdly-9/3fd3t3q l,r uras tric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a r faj y*+(cvu;cegion where a uniform electric field is directed straight upward. cy *c(; +ujavf What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equi ;;y c,m,biu(j:lu buxm3f s2ilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that ox th7)ejzm(i4k4 ib,is grounded. As comphkjxm 4oi)bi e7( z,4tared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conduct ;x7(nwev*bt:(t ufcrors in static equilibrium.

State Gauss's law.

  The charge carried by one elek bg1( 0lzn3(m7zoupwh6+yar6kavb ,ctron is $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2.2k-;*lrzobyp 00 mC. How many more protons than electrons does this piece of plast rz2yolk p;b-*ic have?

  What is the charge on 1 kg of prot5 eegz2 /awm/bons?

  An atomic nucleus hasuwr,,sz2u 5jy 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 -4.0 mC, 2 xhnfn3).inhrespectively.f)x hn h2.3inn What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and tft)wl.lzj l,+ q.jfy, he force between them is 1.0 N. What is the magnitudell.zjy,.wff jq+,) t l of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. /nj7:lb+ -ujpi tz5tjHow far apart are they?

  The force between a c:4 wbo8e-i av$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initid oj5+ p.dslf,lif/n 4 )xri69 bkudi/ally 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8/xls95 fdio.jn4 df lri+u/k,pb d)6i.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are place*8dv gimxwj+xlegw.(/ 0m op kx,:0za d 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 electrostmkjeawgl:w0dx x.x 08 +mg,v/i *(po zatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. dfr(m -rbuihw *p* c,8 A charge of +2.0 mC is placed at the origin, -2.0 m C to the righf(d*mp* w8hir ,c ru-bt 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 located at the following positions: Q1 = 2.ui66 y .8bphyu00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -p.hu8y6 ib6y u5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second pj4 d/ v78n86qw;klxyd ikr:doggut8 -oint 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 fo w8/gk -igxn4udv: ;786ldjdrt 8qkyorce 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 (0.30xk:ozq ,jzr1+s-5 bx x m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnbz 15o,xsx:- q+jzr kxitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m);m4 4qhxwrdb kn9z:,c f;wibq jnvqe+r5 21r:2 Q3 = 5.0 nC is at (0, 0). r 5+d:h2r xj 1w: kqb9qvrfwq zim;2cn4b4,ne What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilauf g(/e4l cb0jteral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whbl( f/gc0 e4juich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At*mj /cvcb5ny;rijutyh) -0f*l xc( )d what pointc*hmnd(ijjy -)x tclry f u*;b/0c)5v, 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 would be zero?

  A +3.0-C charge is at the origin anw5 oyk0s c b)38+uqbwqd a +9.0-C charge is at x = 4.0 m. Where on the x-axis canbyqs358obqu+ w )w0kc a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where4j,dtl n1z t rvid4mch5qi.73 can a third positive charge +q be placed so that the force on it i.5t4nvzmth ji1c 3 d rl4,q7dis zero?

  A copper penny has a mass of 3.0 sexg,t(t+eaqs;t d.-vlg8 /jg. 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?

  An electron is held up against the force of gravity by the attraction of a fixem* i6 61rkip ekq gl+7m1)vhled proton some)i6 mp i*hlrkeeq71mk lv1+g 6 distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common poinik+cq o9*+gov2jeum, fg 57 qct by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repoo5+ 2 v 9iegckug+qfmjq,7c*ulsion 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 chargk8 5r gvmw80kctcc7z:e of +40e. What is the magnitude of the electric field at a distance g ctcvr8z0kc:5k87 mwof 1.0 m from the nucleus?

  What are the magnitude and direction of the electric futaozf/ ,/d: xgc;:ai4 ivd+n ield at a distance of 1.50 m from a 50.0-nC charge?ax+tfig ni dz,v/c:u;d :/ao4

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the e +;kyu1woc8ar lectric field at the w+koa8y;cru 1location of the test charge?

  A 5.0-C charge is 10 m from a small test chargek0oa ts67x3 ad)fpz5 xl,;bt n:;qj bg. What is the direction of the electric field 5j tpx dkft0agqz)o;x 7 nal,:3s;b6b?

  A 5.0-C charge is 10 m from a small test charge.ss kg171 cwch +i:.glc What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of thhkl 1i1 gs.:c7cw g+sce test charge?

  Two point charges each have a value of 3.0 C and are separated by a dim4fb: vz wrl()stance of 4.b rvf zm4l:w()0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and ;er.t)h jx3f fr0ug(l a -4.0 mC charge is placed at the 50 cm mark. What is the ere. fflg)0h (3rx;j tulectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm :sij 4)sl3(eb;qdo g pmark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joi3osld(b pse4 ;igj) q:ning the two charges is the electric field zero?

  Two point charges of +yk2/vrwnfu*1 3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fik1u2yw/ rf n*veld at the point midway between them?

  Three 3.0 mC charges are atcuim9c-s i( tzq4y n+3 the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electricc 4tui (9c yqz3-nsim+ field at the center of the square.

  Consider a square which ri86p eo/omb; is 1.0 m on a side. Charges are placed at the corners of the square aor/i 8b m6;epos 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). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a cpap)sh9 2pu9 p2spd70 qzju6 tharge of 5.0 mC when it is placed in a uniform electric field. What i 20d9h6aszpsu9p p2uq pj)t 7ps the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass ofrz ;-b:u;z8y1nmst v4du z,5trqi0w b $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in an electric field of 6000 N/C pors ;l*5ceuwm:inting downward. What charge must be placed on the ball for it to beusr:;w e5mc*l suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed il4v oq1a(ezs- nside a uniforq-as z1l ove(4m electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 sl5mio 7qhw5axc7*y 5 mC. What is the magnitude of the electric field 5.0 cm from the sphihmx5s557co7 wal y *qere's surface?

  A metal sphere of rai0 0sxx 4 yc9z:c(fmdodius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the cenmiy9x0 od:0x c4(fzs cter of the sphere?