State the law of conservo ;eiuk yay/j )(v7xjxi6e 9wgn4z8u5ation of electric charge.

  Is it possible for two negative charge1kbhfu9 uwr dq8-h9-hsp/a,gs to attract each other?

  Is it possible for a positive and a negative charge to attractfa-ksz t sn26wzt 7p.2 each other?

  A glass rod is rubbed with a piece of silkt73k g,y 7tgzg. During the process the glass rod acquires a positive charge and the sil,yg tg73gt7z kk

  A proton carries a

  The model of the atom 1mnlg9i f 1m/m5hbe:3 (w:i xi+ u1ctlsib-xgshows a

  A neutral atom always i4 f3-/f wpvqx9g- fjdl50z+cg y.ouzhas

  An atom has more electrons than proton y461liz95pii fwrv) unklixx1i. 0h-l7l* rqs. The atom is

  Materials in which the electrons are bowuog zlvr+4vj(8;6wmnm s d(mf2 6n/yb5nig 0 und very tightly to the nuclei are referred to gw/jzm+ 0yru6 vm4 vf 6(n;si52md(bwngol8n as

  Materials in which the electrons are bound very7tzap8uo 0de n7g5y: a loosely to the nuclei and can move about freely within the maagot 7ue0y:5paznd8 7terial are referred to as

  A negatively charged rod is brought near ggmkdw,m3*;6m+8pfa. aktlv one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod wmkg lf3;6d,v.p*tgmak8am+ will be charged

  Sphere A carries a net positive charge, and spher *)5rc a 8wl2rq(fjnfd* 5fagoe B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which stategn f 5ar jdc(58r)2ff*wlqo*ament is correct?

  How can a negatively charged rod charge an electroscope b ) y w1uyfrp9;kl;fr)positively?

  An originally neutraluqq q.5 yzatjue23ta +;l(9zy electroscope is briefly touched with a positively charged glass rod. The electy;q.5l2qyaz aj39u( qteuz +troscope

  An originally neutral elh (cxh, kekyu 4p7f1ijmzg 3odk -hju77o8:v2ectroscope is grounded briefly while a positively charged glass rod is held near itkfy 3uj cpi, 7vhho24-gum d8( j7k ez7:oxk1h. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Thee( sn2d:m1c,ssb): mw3a+ zdxyul)p sn a negative object is brought near the electroscope, but does not touch it. Wha (px b3 :,d 1nws:)a)mc2mesdys+lu szt happens to the leaves?

  A large negatively charged object is placed on an insulated tafu)6c afs; 8xwble. 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 fos68fu c ;fa)xwrward, 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 Coulomcu04bzob7m vy ktz0.7b constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanigprlxbux ) .wj2k4) 2vf 9vg,t5oz* tce d. The first charge is larger in magnitudvgw4iu2. xt )f 5rv kxo9zbpj t),*2gle than the second charge.

  Sphere A carries a net charge and sphere B isgy osu1:m7x a. neutral. They are placed near each other on an insulated table. Which statement best describes t 7sam.o:u xgy1he electrostatic force between them?

  Two charged objects attract each other t- jkpo g; ,h:yjrn;(owith a certain force. If the charges on both objects are dhon;kp(j go-t:;jry,oubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive fo8c qdjiz.a1jc* c.-htrces of F on each other. If the charges are separated by a distance of d/3, what are the new mutuac* j.81z dj.q-atc chil forces?

  Two charged objects attract each other with a forcur tjf1s*)q hor(n8ebe:oz glpk wgn// - t7/0e F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the se/(ng *bo-ul ) hzor078 ep:kqnwg /1/f jtesrtparation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton 4r neyjnwj;klpc; 6(0are separated by a distance of 1.0 m. What happens to the magnitude of t4;(ker j l0;w cpnnjy6he 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 1.0 m. What hapiaaf+v-bl(*pg + k/fk pens to the magnitude of the force on the first electron ifba(/*k fa-gvlif+p +k a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happi64ux e k*uh21ea+ rweens to the size of the force on the proton if the electron is moved 0.50 m closer to641i*uxrhke e u+ae2 w the proton?

  A point charge of +Q is placed at the center of a square. When a second poinocjru 53, cgv5 nfn(z2t charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force ovjn zr onu 32c,55fg(cf 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 center of the square?

  A point charge of +Q is 0 ej: u4s9:qw-jvpp dnplaced 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 magnitude of the:j q-:9vs d0npp je4uw 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 vectorwjcnix;il,mlq:z0v3xr ,u-0 ?

  At twice the distance from a point charge, the strength of the electric f zxf5(l1 *rbb2 jyz;yh3pst8m ield

  Is it possible to have a zero electric field value 6-pxi nc)k24yxqc1v9i0jou4. h eo4a*fzkn x between a negative and positive charge along the line joining the two charg4.n4 kuifpckc*0 i4)v exznjqh-o1xy6 92oxa es?

  Is it possible to have a zero electric field value between two posiy6svbzxr495hh (ar( ttive charges along the line joining the two charg a5 ht4r(zb 9(syvrxh6es?

  Electric field lines near psitive poiu:)v:hnjlw31dz kn/u nt charges

  The electric field sh50im h6,ymzq fown

  Can electric field lines intefh,3.kdybg *r rsect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform ele5baulu a 4bg :.nnq)5ectric field. Give a statement concerning the electric field in the blo5u4be.5 n ba)qlu n:gack's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each st tu-*bws3 t;given the same charge, the electric field (E) midub*tw s-stt3; way between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a 3 wq,kv7al x,cuniform electric field is dirw q7k,a3 l,vxcected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrl l5t7nca/ k-rium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is nepa--6nz/f o zdrb:eth1z58 grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere h/b-f65nzno hr -peezza dt1:8 as

State three propertiexcf s5:gc3pgqkja plu d(j,k x4 wf(ax/ 20g(+s of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron isl bq1n7zij(u; $e = -1.6 \times 10^{-19} \; C$. 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. Hh4vlsmym-k -*yr :eu 7ow many more protons than electrons does this piece of plastic havrs4l mum- 7:-hyy*ekv e?

  What is the charge on 1 j8bg+bz rcs*g r08,xnkg of protons?

  An atomic nucleus has a chargm82 k/jl e d()y/z1yewb22+lzach zwue 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 vald*dw 2- wz utiaisnie:9w :h5*ues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electr*i-iauw95h t dn::w*zi2d swe ic force between them?

  A 1.0-C charge is 15 m r)p: e yemg+k.from a second charge, and the force between them is 1.0 N. What is the magnitudgep+:mery.k )e of the second charge?

  Two 1.0-C charges have a force betweegjctx xrr:e *qnqqqf91rlw1 70h 5 n0.n them of 1.0 N. How far apart are they?

  The force between a sn7ugp 0+ xx5s;1ymyl$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experi*foq *-8h)zzybpt7 v qence a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between bzv**-ztopf h qq7y8) them?

  Three identical point charges of 2.)vr;noj8hr5t n9b.oze9 .gsw 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.8rj5r o9 bno.);eg. s9ntzwvh What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2 wpd 8dz ph1lrn7.7+jh.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 direction of the electrostatic force which acts on the djwn h+p1. zr8l7hdp7charge at the origin?

  Three point charges ak5in +g rht-a(waj9q;h/l5ed re located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3aql5;w dn 5/(ehk+ij9 gr-ht a = -5.00 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 poio3-o ejlucn2lb gk97* nt charge of -Q isoe3l og7klncj- *92b u 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 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.s xjd-d h)r,l89bom7 b2:jjfd 0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0,j s-b7:lbj,8)dr9d j2dm oxhf 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0dqqah zw(hay*uhg*// :,a req) i.-kr ); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the dir eqw*qadr, ga :(*k y.h i-huzr/q/ha)ection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaterm)vwei5 gvb19al triangle which measures 30 cm on a side. What is the m19vw5v ebg)i magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whu0-ff jcf-ri:9 q(*upi0lxf mat point, 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 woulif:rff l0cp x9 (m0uuj-f*q-id be zero?

  A +3.0-C charge is at the origrs*o+u9d.0 w3w3qv w xncdqk7in 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 is 3c*w 3w79 xoq0sd.d+nu qvwkrzero?

  Charge +2q is placed at the origin and m/d nhhb gu*zh5 a:)1zcharge -q is placed at x = 2a. Where can a thz m h1:b)gu /hdz5*hanird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totafsr6210sjs 0ux yk:lfl 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 sk,2 rfsp8* 8rxziw lu- vn3q1of gravity by the attraction of a fixed proton some distance above it. How far above the ef - lk3s nws1,8ir2pzvx8rqu*lectron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonrcd7 d ptw-;ivp6 *+q-ngje3kconducting threads which are 30 cm long. Both are given identi ed jrcnvd t-+kw*p ;q6g3p7-ical 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 magnituou1 i *,,j bfeklhp7e4de of the electric field at a distance of l,e,e1 j oph*47ubfki 1.0 m from the nucleus?

  What are the magnitude and direction 75 9q:k2g*bbgqn oxxhuh -n9tof the electric field at a distance of 1.50 m from a 50.0-h 2hqnqgt: 9kbnox* 9ux-b g57nC charge?

  A 5.0-C charge is 10 m from a small test charge. ui:ie. fl:- m8gfxcx5What is the magnitude of the electric field at the location of the test c cm xi:.8 li-efufxg:5harge?

  A 5.0-C charge is 10 m fro. cw r(qkpo*8pm a small test charge. What is the direction of the elecrw8 p* o(qk.cptric field?

  A 5.0-C charge is 10 m from a smaf80 +fhl z9yccll test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargcz9+y0fc8 lhf e?

  Two point charges each have a value of 3.0 C and arei, u vnr 1;fst1qq3csx50 7xnk separated by a distance of 4.0 m. What is the electq5t ifqr7xxnk03;,sv 11 sucn ric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a .m p --b/vu, p3bpb )slbr;grumeter stick and a -4.0 mC charge is placed at the 5rb,-;um pruv.-3b b)bgps/ pl 0 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC char0h 47trtp uz5n3s p4csge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fieldhp cr5n t4zsp034us 7t zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.xuq; f6se e +kt 3qyet5+ojvm4q3ha; 420 m. What is the magnitude o; uxe j6eqfy qem33+ks;+t4htv5 o4qaf the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Th, *d5idgvvs7wo :j,-x0cfmd x e last corner is occupied by ao:-,cv d gmjddwx0, *7fi5vsx -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges a.ed.ixi (uvibi9 zt4yy6:h l7re 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 b.h(.yxyzivi: eu 9l746tidiat (0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in y1x2)vsaf,l gjn1h6d a uniform electric field. What is thnyhv,1jsx gda2 )6f1le magnitude of this electric field?

  A particle with a charge o cv.cy b0++euif 4.0 mC 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 0.120 g is placed in an electric field of 6000 N/C pd mkf.,c1bt bk+wpnu-;uc- 3 pointing downward. What ch 3mu k-cdbutb- .,fkwp;+p1cnarge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. ;:mn: ilfk9i (li, ujrThe ball is placed inside a uniform electric field, and is suspended against the fonfmi ;::,(lk jl9iir urce of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carrie n8 b9ikwwa-5c qvah,3usw ,(ys a charge of +2.0 mC. What is the magnitude of the electhnaww, , q8s wb3yvu9(kc -ai5ric 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 trq:1p6 gnk ;wuhe electric field 6.0 cm from the center of the sphewg :1pq;k6urnre?