State the law of conservation of electric chaog7wq dm199rwrge.

  Is it possible for two negative chag mrvgpb 45,qfbj(9t71l .t dxrges to attract each other?

  Is it possible for a po3 y;i vgicb,y9/w.znlsitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process tbdn,29 oj/k7 - xc6x4r xxrjdhhe glass rod acquires a positive 6j-9x n,c2krohxd/bdjx7 4rx charge and the silk

  A proton carries a

  The model of the atom shz4yb:y4gj l ulk 8od yl6wi-27ows a

  A neutral atom always haa*i0ql0k;:u vqls *(5gpzt b h3xb1ims

  An atom has more electro 8 ah1hfeepo3b8/m1dd ns than protons. The atom is

  Materials in which the electrons are bound very tightly to thev aya ;2-sy z38eyyf5 1 3zren+yz2mev nuclei are referred to ze-8;2zy e5yvanvemazy3y y+ 3s 2 r1fas

  Materials in which the electrons ar/t3d4j gm5s lpe bound very loosely to the nuclei and can move about freely within the material are referred to atm53gdp/sl4j s

  A negatively charged rod is brought near one end o*qhz0g4 q sje-kkuszh3 qv1mi9b71 m2f an uncharged metal bar. Thezsm7 gq khu- mjsqzv9e*q02i1k b341h end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutra0zmw9-j n/8o;sn jwnfl. They are placed near each other oj ;8jn9w-0ws /o nfmznn an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charr /( bt elms3ip/r.*erge an electroscope positively?

  An originally neutral electroscope is briefly touched with a vg0.b i.w idb)positively charged glass rod. The electroscop bwvi0i).bd.g e

  An originally neutral electroscope is grounded briefly while4u oi+yzn yt( 5lxp-4z64uuwv a positively charged glass rod is held near it. After the glass rod is removed, the o4u(4v6nytzu4yw i-+p z5 uxlelectroscope

  A positive object touches a n ma yt5om/s r9;3exfwi3dqg 7)eutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch5d ao7s9gqr 3) m/wm ix3fty;e it. What happens to the leaves?

  A large negatively charged object is uro3,cplg qwvc0/.2zc 3/t 9n ogblb2placed on an insulated table. A neutral metallic ball rollsq pc2b2l3 ovgwz93nb , /0c/c gr.utol 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 constant lyyz6 i d-)gz6von0w8tbv 7q- $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancq*8 jlw qmd81 pbn)3v;mtlt.3tfv k6ze d. The first charge is larger in magnitude thanlzn68ftt wj qk mtl).1d3v3v*q8pbm; the second charge.

  Sphere A carries a net chaps1s;2 qpcm r*10qfp0+a oj zqrge and sphere B is neutral. They are placed near each otpr;c* 0+ qsqs20qfp1jpz1m oa her on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain ford/ji v; lg:0qu m.;edace. If the charges on both objects are doubled with no change in separation, the force betwee0;id.l qe: jad/ ;vgmun them

  Two charges are separated by a distance d and exert mutual attractive forces o-rve*r65o8s w zn)ry pf F on each other. If the ch -8pn6se*v o wr)zry5rarges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to th/ j,mafg-vm.(r s8ftve force between them/, .v tmf -(vjfgm8ras if one charge is 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

  An electron and a proton are separated by a distance of zsgi:coad14d; 1s.oi1.0 m. What happens to the magnitude of the force on the proton if a second electron is pla co s;4ig sad:d.o1zi1ced next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happert, ()zq; tdqtns to the magnitude of the force on the first electron if a second electron is placed tt( zdq) rqt,;next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens to w0igwwu1ml(ctaq s03 ea b6- 6the size of the force on the proton if the elecwct1we u3- igqw la6s0ab m60(tron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square.n8* xghg/qj7r xo r/1i.rj.d ixu5s5 d 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 sri7g qjd 1u nh5rxg/5d8.o.x xr */ijof the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilaucz)x+38.y o:p4*czb5v/ c fmp9bau khncn,gteral 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 third charge of. m/v89cc b+z buu gyp34*fhnaz5 cn,o):pk xc +Q placed at one of the other vertices?

  Which of the following ivfaqmsefl:c9gy- fo69:3 a7bn1 zbv.f2 . zaus not a vector?

  At twice the distance from a point charge, the strengtha )xtp5e:u*cbl by8j tmz-g:0 of the electric field

  Is it possible to have a zero electric field value bcd;2j- + et(vxebko1 wm+ 6xkfetween a negative and positive charg (jt1+dmk; ek +foxb -c2vwxe6e along the line joining the two charges?

  Is it possible to have a zero electri; o + t vy4w0 /klll-db2j6eaeridng60c field value between two positive charges along tl t ly d2a/vwe0igo6; nl0je4d6rbk+-he line joining the two charges?

  Electric field lines ne)rc+p.q 4 gxp(z qif3vt.u2q sar psitive point charges

  The electric field show *xfy w6 wxz/zn*rh):en

  Can electric field lines intersect in free sp,0 fnop7nk5skace?

  A solid block of metal in electrostatic equilibrium is placed in a rrwiv f3xanrj43ne vz:0 b3.k5;izp. uniform electric field. Give a statement concerning the electric field in the block's intezze:p0rr4 ii3v3 ;a3jwn.5f bvk xr.nrior.

  If a solid metal sphere and a hollow metal sphere of equal diameterswykok 4*of0k ) are each given the same charge, the electric field (E) midway between the center and tyko kkf0w4o)*he surface is

  A cubic block of alumif:+v -jubj0ltnum rests on a wooden table in a region where a uniform ele-bfu0j :vt+ jlctric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in ele 8k5nz 6nj4ncwctrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gr dexti:3,vr g4x*y wv7ounded. As compared to the case without the hollow sphere, t vw3g*x,e rtiv:d 74xyhe electric field at a point directly above the hollow sphere has

State three properties of conductors in static i76b;jqm hw-81kcn 0ckkx3zz equilibrium.

State Gauss's law.

  The charge carried by one et)5gp a)u0 gdjqj 8dj*lectron 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 +2.00 mC. How many more protdh .s70sabp/l ons than electrons does this piece ofsp7d 0l/.asbh plastic have?

  What is the charge on 1m;(v-m9(qzbuo wo ;wm anix-. kg of protons?

  An atomic nucleus has a cau; k3xx.s()y1x kwi 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 c 8x9(4gbe 9jyfe2xubkp7mqu) harge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betbxe8um 79q xuj)b(4kg 29pe yfween them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is qtg j:tn/bkgc-v ; -)lg9,bma1.0 N. What is the magttqgalvg ;9b)g/ck b ,m:n-j-nitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How uit/-k )fq g8)uz 0ydtfar apart are they?

  The force between a ,8 uwl)vuab ko 6:x.iy$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N fory 52)aq (dahp;k.cv)p,rud qsce. If they are moved to a new separation of 8.0 cm, what is t u,ac) d.5qyvdsp2;hr kp (q)ahe electric force between them?

  Three identical point charges of 2.iy k-04de/h( u(6vbn,heq 4ids uo 8zk0 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 magnitude and direction of the electrostatic force which acts on 6k end-ks ,zhhqu08ey4i(uod(4/ vi bthe charge at the origin?

  Three point charges are placed oneu5 aad4zt*/w the 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 mC at the 100 cm mark. What are the magnitude and diad/au* z wet54rection of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = ci z:0:l zc3ql2.00 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 magnitclc:z 3zq0 i:lude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a s 8ut)6tbep hvzx2.ie4econd 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 oft pxe68b2)v4 e.hzuti 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); fjc,1zzf4ilk1 (z ;0l8wnlli Q3 = 5.0 nC is at (0, 0). What zf (i8jc zzfkw1ll1 ll;,0 i4nis the magnitude 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, g7b ljqa )akzl.e8+8n 0.10 m); Q3 = 5.0 nC is at (0, 0). What is th l ak b+)n87ljgq8ae.ze direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 ;q7m sh 2v*vhdmC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is thes; mqd72vh*v h magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated xo tket0dz(/ ,by 3.0 m. At what point, on a line between the two charges, would it be possible e(tzo,tdk/ 0x 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 a2 d,4cnp6bbqy39tdcz nd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be pla c2tp3d6y94dn,c bqbzced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is plac/ xn mno)mfn 7/x1d*vfed at x = 2a. Where can a third positive c1/n fdxn)mno/ 7vfmx*harge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0n tkja0i9lt,7pnr-z 6ri6u w9 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?

  An electron is held up against the force of gravity by t)2yw aly d9per1- topia-kz( 7he attraction of a fixed proton some distance ad- zy7ptp1lyi w()29k oaar-ebove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commopdp +6 7udto84 p*dlugn point by nonconducting threads which are 30 cm long. Both8pd4+upu*7p tlg6odd 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 magnitude of the electricel9 ir*zyz,+ee: bovnc 91r:x field at a cezb9+e zr1 iry:vn*l:x9,eodistance of 1.0 m from the nucleus?

  What are the magnitude and direction of the e.1a qb gt,ryp*lectric field at a distance of 1.50 m from a 50.0-nC ch, .ybpga1qtr* arge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude r6kfk( 8e8tyujv fa 0/of the electric field at the location ofvrf80 ukay 8kf6 (/jte the test charge?

  A 5.0-C charge is 10 m from a small test ct49ptgbasu+ 9)rz( scharge. What is the direction of the electric fieldzr(g s9b cstu)9pta +4?

  A 5.0-C charge is 10 m from a small pz, 29.k 1wgyyp p,k9mxjsoz. test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test champx g .kkppw.,yys zo9 j912,zrge?

  Two point charges each have a valukh42k .adxht 2e of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point mi2h.kxh4 tdak2dway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chor s,:lfm8wlnw.p 0krz: /4paarge is placed at the 50 cm mark. What is th8r/ m.skaprnwwl, 0oz:4pfl :e electric field at the 30 cm mark?

  A 5.0-mC charge is plac0 pv;njtjobxg- bh/;qzrgq.t l5,j .g/iq:z4ed 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 th-v.,xqnt hlt g /;obpb;q5j4/ 0ggj z:jqri .ze two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.23rlly8g;9pwf ekb 5 n/0 m. What is the magnitude of the electric field py/ e9lb5gw3;fkl 8 rnat the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of7beekk r5l hc:0y q3bri/ ,. w(cxb6cy side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at b rcqxe7cc0 y (53rey.k6 b:/ikwl,bh the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed atsjit4d,he w thm6//6x8 nvxp9 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). What is the magnit 4 pi /eth/ v698w,m6txxdshjnude of the electric field at the square's center?

  A force of 10 N acts prs+h(q2hr ;vr bfl /:on a charge of 5.0 mC when it is placed in a uniform electric field. What is the+rf/hq2 ;bl ps:hr(vr magnitude of this electric field?

  A particle with a charge of 4.0 mC+v) y870bz -;3 of:2nrkx6bh vxrarprdd0vto has 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. ***y ey0selod-dwm9g120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed og**sewddeo 9*yl y0-mn the ball for it to be suspended?

  A foam ball of mass 0.15hk7b lda6hh(c3uo x4 :0 g carries a charge of -2.00 nC. The ball is placed ins6hk x74l3(hd acob u:hide a uniform 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 mC. What is thsp1x9p3 /wniy; c iey(e magnitude of the electric fiex/;pn sy wicpy139i( eld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 uw4+1flkicav gnq7 5(mC. What is the electric field 6.niu5l +v(gckw4f1qa 70 cm from the center of the sphere?