State the law of conservation of6rwev s5wu/aig*5e / f electric charge.

  Is it possible for two negative 705:sygl ,yjazop7 8(2yuoazvqh (zacharges to attract each other?

  Is it possible for a positive a0ex)ju0im17reo7(d fcft mo 3nd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the36lmbv(t*f0e ahf8e j glass rod acquires a positivmblhjee36f f *t0a 8(ve charge and the silk

  A proton carries a

  The model of the atom shows af+jpj 1s migm+loo03gn/+kd(

  A neutral atom alway:xd7b . vw;v/r.ucxyys has

  An atom has more electrons than protons. The atom ibun*1t n.u5a bwusb n9:dh;ru7cl0a6s

  Materials in which the electrons are bound very tightly to th c,.ag4vcf dfq vb.q61b8zus*n (3wdhe nuclei are referred n1f3cdwq vuh, q* fgs c4.68.vz(dbab to as

  Materials in which the electrons are bound very loosfj5() 6a rs0)qcu*yeelnj4 n lely to the nuclei and can move about freely within the material are referred toe6fy5(l nnjarseql)j c0)*u4 as

  A negatively charged rod is brought near one end of an uncharged m3p9 w dgeagfg,6z( o7uetal bar. The end of the metal bar farthest from the cua 7wo3pg(6fggez , 9dharged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral.e1y /vqbda+fv7rq0 ngv (+gn iv;q,-f They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is/n++7egbf1 yv-ir ;gvvndq, f0q( aqv correct?

  How can a negatively charged rod charg)cki 66tu k+spe an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charj*r:/ kjt9fx bn5 4jdeged glass rod. The electrot5xkbrj/*n4fej:j d 9 scope

  An originally neutrabr-f .8bjazur d v5) zij. -upbm07(knl electroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, tf)ru0 jnd..ba5p b-( r7kiv8uzm -bzj he electroscope

  A positive object touches a neutral electroscope, and the *t*ua zkr bs:7leaves separate. Then a negative object is brought near the elect ts 7zub:ka**rroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed olsn :cy3nx)n7 n 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 negative object. At no time does either ball touc)ysxl 7:nn c3nh the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb da*8kc((f7 q d6 yhf 6ugreog/constant $k$, which appears in Coulomb's law?

  Two charged objects are if vi6/ 5sr; ;j n6g/wnzw4h2 jrq 6gk,clqe)aseparated by a distance d. The first charge is larger in ma5/ jn)nwfvs i 6wq,;r6qhgk6z2ac /;r4ijelggnitude than the second charge.

  Sphere A carries a net charge and sphere B is net50spxxdv(98djr d 7sutral. They are placed near each other on an insulated table. Which statement best desc9dsvd( rdj75p0x 8sxtribes the electrostatic force between them?

  Two charged objects attraslh :gfvk,y.4j.pi w*d vnfwft 0-- l4ct each other with a certain force. If the charges on both objects are404lw w-gsf: f y-*i lfdhtvkvp,..nj doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces ofcf 5u -1:fkiyq F on each other. If the charges are separated by a distance of d:uk-iq1yf f5 c/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to +aaucbws g+t72y- jd;bm,o. q the 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 its or.gcj;,baym u2-+tsobwq d7 +aiginal value? The force is now equal to

  An electron and a proton are separated by a dis.hre/3bp/hd e tance of 1.0 m. What happens to the magnitude of the force on the proton if a sh e b/3e/.rhpdecond electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hapxamyq ud, ,,5*f0l zrdpens to the magnitude of the force on ,5fd0q*uyar,xmd zl, the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What haptd9yx-/pqn 9rpens to the size of thtx /-yr9ndqp 9e force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a :vf uool6(6dhxf h5u7ub-r ur3:.rkysquare. 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 t.o:l ru3hh6f b uuvrkoy:-r67( u x5dfhree 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 placed at the centroid of an equilater :r 8 houcdz76-azfqn;al triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic forcq:azou7cfd;rh zn8-6 e 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 not a vect i (migbb pa32ty3/x;tor?

  At twice the distance from a point charge, the strength of the8hyy(vfsk ih ) m(m fz57mr)v/ electric field

  Is it possible to have a zero lq 1/;a)y p;vuq yniyf ho :-9dy1ntq9electric field value between a negative and positive charge along the line joiniald -1y /ytq q:h vpo9fyy;nu); nq91ing the two charges?

  Is it possible to have a zero electric field 8qsnjreb6 y6:nnxuz*s 1(dc, nibx +-value between two positive charges along the line joining the s-,6rnn*xds +6q:( 1nbnzycibex u 8jtwo charges?

  Electric field lines near psitive po(ja9 kicll *dnp(f8d4f1v+ mm int charges

  The electric field shown kl li. ,mwnr gn.1(:uu

  Can electric field l3r 9jl +f5b r6dzglvi-9(iwd3 y8z nieines intersect in free space?

  A solid block of metal in ylv x3 hozwo(:/ rn)u5bxj+t.electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electr(r.uy x tn)3v5bz/ohlw: oxj +ic field in the block's interior.

  If a solid metal sphere and a holf*fkde/dc5 /8 obdi7s e-j 48/senlnplow metal sphere of equal diameters are each given the same charge,/d-8cs7bpoifl/ sn/fd 5k nejd*48e e the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region whe -rxtaglok6c-hvmx2y 3,* 3urre a uniform electric field is directed straight upward. What can be said concerning tmx-c luv2k*r,agxhy3 o6- r3t he charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charg3 fin+i+kute +e

  A positive point charge is enclosed in 8*rsxknnh*x 9 a hollow metallic sphere that is grounded. As comparx nhr* s9*xkn8ed to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in sta+jkq 6x2l0fd*jlu-k ( oek: fotic equilibrium.

State Gauss's law.

  The charge carried by one e g;wxebtlo, 129r x8xkfr m3w20spui8lectron 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 pmau7 3qc)u7 1tbv* h7hnov:gmore protons than electrons does this piece of plastu )t71u3qhhcp v*b g:vm7a7noic have?

  What is the charge owf j:rtbxfz.)a /1 bw7n 1 kg of protons?

  An atomic nucleus has a charge ofzaco le8;p1 a-ux j94ugs-9 vk $+40e$. 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 -4.0xbuunph.7c () xm:5 mj mC, respectively. What is the magnitude of the electubxump .n5 :hcjx( 7)mric force between them?

  A 1.0-C charge is 15 m from a second charge, and thu 36f8vsmd*bi e force between them is 1.0 N. What is the magnitude of thf6bmi ud*3s 8ve second charge?

  Two 1.0-C charges have a fotbn nrsx+7h *bi/0z0 orce between them of 1.0 N. How far apart are they?

  The force between a 4vcl8t2 j8 c2 xjy6 2ait0ocyk$30 \; mC$ 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 force. If theyhj+:vvb 0aa 8d are moved to a new separation of 8.0 cm, what is the electric force between the+hvj 8vb: ad0am?

  Three identical point charges of 2.0 mCyga b) lhp*3l mog+/cdxsl;80 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 1003pmgox c/ys8*)0+ lll d;ghb a 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 the x-axis. A charn p6:-u(hm5dfn rk0 jdge 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 m:kh pd6-rjn(5 0dunfcm 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 positionq-4m3n+xx vpus: 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 magnitudu 4qvxn-px +3me of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, anwv5 i:a(bcs.1obe t en2x4.t vd 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 acts on the center charge if a third charge of -Q is placed at the lower-left cornvxve.w at:(toibnc42 . 5be1 ser?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, wa4b xokr/d 960.10 m); Q3 = 5.0 nC is at (0, 0). What is the mag ab 4o/d6wr9kxnitude 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); Q3 = 5.0 nC is usvulio c18rdy :/ezh;.o6 d.at (0, 0). What is the direction of the net force on the 5.0 nCvid heouy/u6 8lods:c. r1 ;.z charge?

  Three identical charges of 3.0 m/qttu- , .6pu ktj7riiy o+5hfC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charget i tu-tfohku6ij .+5qr7,p /ys?

  Consider point charges of +Q and +4Q, which are separated by 3.0 . taeig 4o3g esn.s5o,m. At what point, on a line between thaot 4iss5og 3g .n,e.ee 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 and a +9.0-C char,; nck5c(1ls jnjpic2ge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is1pc(iknc5 c2;nlsjj , zero?

  Charge +2q is placed at the origin and charge -q ihw .6yu)a44 an ci*htg81sb sz3puf0x s placed at x = 2a. Where can a thi) 041z xfhc4s.tywhn63*b gpiau8aus rd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totahyixk : k 6az;/ev8)zsl 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 gra h1vt8s 0.wdjrvity by the attraction of a fixed proton some d.vwh80sd1t rjistance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hu i:aadhoxd( d:+;(u hrng from a common point by nonconducting threads which are 30 cm loah: (xd(u;dah+ori :dng. 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 b ks:k);nl; lna charge of +40e. What is the magnitude of the electric field at a distance of 1.0bn;)sk;kl nl: m from the nucleus?

  What are the magnitude and direction of the elecbn /kxh.y- fj)ln u76jc0 qsn/7cggm3tric field at a distance of 1.50 m from a 50.0-nC /blnk0 m6 h7cc-)qfx gunng7y.jj/3s charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitvxakjr8io(n+d w-vq mwk-c;mjqlye1 ***) ( mude of the electric field at the location of the e*c l8-iar-wmq kvj*mmn+*d1 o(qv) xy k;w (jtest charge?

  A 5.0-C charge is 10 mj0.ipij+8v4z j y d3g )anll7k1p*zzd from a small test charge. What is the direction of the electricyzdj1) a30lvdk n*.zz84 7gj ipj+ipl field?

  A 5.0-C charge is 10 m from a (4.idz jj.9 ow9:ggyn vhq-eg small test charge. What is the magnitude of the force experienced . .vi:w -9zh4gj9gd g qenoy(jby a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C a; ;u;nwfazo0qnd are separated by a distance of 4.0 m. What is the electric field at a po a0o;un ;fwq;zint midway between the two charges?

  A 5.0-mC charge is plic- yvg9:i( kgaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the-c(k9gii ygv: 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark o/ef,qb3a)6 gqd7 me snf 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 fi a q6bgq f)sd,/eme7n3eld zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and xxj ;3 uh*fu5cx = 0.20 m. What is the magnitude of the electric field at the point mid3cfx5uj;x h*u way between them?

  Three 3.0 mC charges are at the three corners of a square of sideam f1 5ahx1,oc 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center ooa a 11ch5f,mxf the square.

  Consider a square which is 1.0 m onp0a3 hax qqa0it fg8tfk (6f40qr3yd: 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); g0qa84a tq( kp3iqfhyf0x3ad f :r0t6+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 charge of 5.0 mC when it is placed in a uniform elecz w2kr5v)g *kctric field. What is the magnitude of thzcw)* g25k kvris electric field?

  A particle with a charge of 4.0 mC has a masc ,;)p1pfkpgmkqoq2- /; v k 9en+iuums 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 o-mwm(m8hu9(hyj m+z y, mkp. field of 6000 N/C pointing do( ,h-zmm hjmupm+.8k myyo( w9wnward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chargeh *81xxu1jrtu of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of tx*u jur11 8xhthe electric field?

  A metal sphere of radius 10 cm car eb*dhnt,kak2jkn4s xv; 192mtt y+ -tries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from-et*t2 1kbkns+kymav9j,t 2 tdxhn ;4 the sphere's surface?

  A metal sphere of radius 2.0 cm 8lo99im7y ii2fm bx4m carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center ofi2l 4mofm 9iym897xbi the sphere?