State the law of conservation of electric charge/x(*jvir/ rol .

  Is it possible for two negative charges)gr4+al3f v60wb j urth 0y a)y)*urrj to attract each other?

  Is it possible for a positive andvg kjrzr+9 v.;.le +ze a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. -bpm/ vjmr6d+j qm1b 68v.e a+kpev/q During the process the glass rod acquires a positive vkq p dm.r6j+ +8qe m1bpm6v-/jebv/ acharge and the silk

  A proton carries a

  The model of the atom sjek17l etoo4w +3 e4uob bombiy0m.8 d48i jf,hows a

  A neutral atom always hao-5u,m(bt ubpid is* m-8 1pfjs

  An atom has more electrons than protons. T.ov / 2qkszp2ghe atom is

  Materials in which the electrons are bound very rt4rmkw8 xz *5tightly to the nuclei are referred to*r4wr x58mz kt as

  Materials in which th4/rqk;qkyn,6.71e m urz jiaje electrons are bound very loosely to the nuclei and can move abouu/k6j zy ir; a7erqk ,n.14qjmt freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged mett8w ttt.uhikcp31(i;+ ea:q cal bar. The end of the metal bar farthest fromu ii8 k wet1+;:pca. thttc3(q the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is nei/mv jx-4 a3jwutral. They are placed near each other on an insulated table. Sphere j4a3w/v ji-x mB is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posit 5 8ok mi*:2du:fwmzof lsy+3fively?

  An originally neutral electroscope is briefly touched with a positively charged ; gj ipr3 o; (cwtod-ke3,:ioydc -h1bglass rod. The bcoo;oj(c -r y3itg id :hkdwp3;e, -1electroscope

  An originally neutral electroscope is grounded briefly while a posite * yz; lmysdhf6fj6o:2-qlk9v q9ct /ively charged glass rod is held near it. After the glass rod is remove octm26l/;fhj yyqzvd6 9s9e *lq-fk:d, the electroscope

  A positive object touches a neutral elen1ty hilh-;p( kdh:90bl g/xlctroscope, and the leaves separate. Then a negative object is brought near the electroscope, butt dh b1li-hkpyl/ :x9;n 0l(gh does not touch it. What happens to the leaves?

  A large negatively charged 9/sbvamncl ,)e q.uj/ a4in +ffhot.1 object is 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 nmfc9. tj e4)+hsia/vo. f/qanb1u, l 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 o mhqfq hxar.67q dd6o- +.1yvhf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fb ww skh*tr- 5);c-t70owpaltirst charge is larger in magnitude than t0wc-- bt)h koar; 7p w5ltwts*he second charge.

  Sphere A carries a netig 6 i7pqx.mz,6-oph ,5 btcvl charge and sphere B is neutral. They are placed near each other on an htz6m-ppg,ix o, .b56i cl7vqinsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each otherna,hr y76slu2 l.j( p po4jr3c with a certain force. If the charges on both objects are doubled with no change in sep3j jl pnh(lspu24ry7aro c,.6aration, the force between them

  Two charges are separated by a distance d r( tqgt// v-9r)f- cv)/6rwozn4lzws2sfrg k and exert mutual attractive forces of F on each other. If the charges are separated by a di4ngc9k vr - q2s/)r r(twf6zsgfol )t-wv/z/rstance of d/3, what are the new mutual forces?

  Two charged objects attract each other wieo9 gxet 4rnjd888t t2k+mr7 vth a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between theix 8ov9t trkjed84tg+8r72me nr centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a protoe7 /frc ywjwlr p,n i580,r)imn are separated by a distance of 1.0 m. What happens to the magnitude of the f)5cp,e8 ,/ijilr wrfn wyr m70orce 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 hml-8 f:nsk* tdappens to the magnitude of the force on the first electron if a second electron is placed next to-n8ltf dk* ms: the proton?

  An electron and a proton are separated by a distance o fpv/ /zy5d 8q5fkwb2o2nogu5f 1.0 m. What happens to the size of the force on the proton if th5df/quzo /ykvnwp528 52 fbog e electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at ecop2a8(7y/ rebmk g97kw6m o 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 aw 87kcmo2/6myge7pb(9ra eokn 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 acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral tria phv1:k d/c.gxngle. When a second charge of +Q is placed at one :ghkc1v.dpx / 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 +Q placed at one of the other vertices?

  Which of the following is ntgte54 p3ggr vsql )+d. vfp++ot a vector?

  At twice the distance from a point charge, the strength of the electric fi g4/cdhrr:dan05 d39amc5 vtw eld

  Is it possible to have a zero electric field value between a negative and posi ,mh rf :vwk13;7oz,f:cxpkz gtive charge along the line jo, zf3x ;z:c :7wo1,vgrmkpkfhining the two charges?

  Is it possible to have a zero electric field value between two posi ) gin9m.ptsy2tive charges along the line joining m)n yt 2.is9gpthe two charges?

  Electric field lines near psitioyh25u7 hhd4r.xei5 4vi)smwve point charges

  The electric field sz)u+4vd t(qzi hown

  Can electric field lines intersect in free spacee-hln j59exlkwc1z5(?

  A solid block of metal in electrostatic6qq6 xu4zh,6wz,dv cz equilibrium is placed in a uniform electric field. Give a statement concerning the electricd,6 c6qx4zh6z wqzvu, field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ea(lk zlzu95/ gnch given the same charge, the electric field (E) midway betwek ul/l5z(9zgn en the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform ele4d.mx ;wrjk2 ,gji p ml/+w vizx3)6hectric field is directed straight upward. What can be said concerning jgp/k+4mh ;i .j6wxv e,w2mrzld)ix3the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an en:dwv:k)kpyf 81k .xgp.f0t z lectric charge

  A positive point charge is enclosed in a hollow metallic s7,*o,(c* fn0 k -rmrbnvd1av( iluhhid(ex7qphere that is grounded. As compared to the case without the hollow sphere, the electm0 **ka ndbv(1o u hlcedxiv(f(-,,r7rq hni7ric field at a point directly above the hollow sphere has

State three propertiede y;s(an(z2+q : ejxes of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron isw *8/6k upu;fo;kctwrhsrw27 $e = -1.6 \times 10^{-19} \; C$. 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 protons tf/xt ;* fyid.ehan electrons does this piff/xt;dy. e i*ece of plastic have?

  What is the charge on 1 kg of protons ;;p 7eothmpn;o9h2rq-d5v/q ) dddk s?

  An atomic nucleus has a b fmcc)892d dqcharge 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 vaq(8z 5l+ jfb i0gxos1alues of 2.0 and -4.0 mC, respectively. What is the magnituo g1x5+ 8qbifsz(ja0l de of the electric force between them?

  A 1.0-C charge is 15 m from a second chargb dpp ux:gdtlp-49-cy9 nw8q -:ebm b;e, and the force between them is 1.0 N. What is th x9d e:bw 9lp-npc;qupd84bg-ym-t: b e magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. kmgy8* )czdfyf*(zzi/,.r ee How far apart are they?

  The force between a dfx11j ; g:7xh mcf 7olwf.by2$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencefz 1l. u3vr qcpne9z)0 a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the elefn z cr.)u3lz pve019qctric force between them?

  Three identical point charges of i3jogk6vny: 3)-g cqh 2.0 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. What are the magnitude and direction of the electrostatic force which acts on the cha33)cghon j y i:6k-qvgrge at the origin?

  Three point charges are placed on the/r)rnj.u,z6 f rz ka8e 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 direction of the electrostatic force which a/anzr8)rjr k e.f6 z,ucts on the charge at the origin?

  Three point charges are located at the following posov: n3op,bhv w8cqxet6ac35 . itions: 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 i3 cxvcqw3:t8ebo . onh v65p,as the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center1;v-m f*yfnqb :hj0i b of a square, and a second point charge of -Q is placed at the uppef ;*n :mbhb1vi0f- jyqr-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 (0.30ct-ev0vx(;bq f b7; x7ing58hhxhj:x m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wf-n txx7i0q:75cx bbexh8 ;vhv( h;gjhat is 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, 0.da:2vl rpd.nlxf-3j-v*d 4ljr0 x+gr10 m); Q3 = 5.0 nC is at (0, 0).3x2dr -lpv vda0rj g4d.fl-x+ j:rn* l 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 verti z7j+zs3g9dt )ywsd4fces of an equilateral triangle which measures 30 cm on a side. Whatjf) zyzg w+ts7d39s d4 is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which arr) cukky:f +3sv6t1.c(qj bnw d z-gz)e separated by 3.0 m. At what point, on a line between the two charges, would it be possible to p1 .z(c ku): dc fw6+bgj-nqyzs3kvtr)lace 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 chdr-t(zht2t 1 uarge is at x = 4.0 m. Where on the x-axis can a third chahrtuttz d1-2 (rge 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. W+xo 9tk)mz -mpfsd p3* 3pxu.where can a third+ p3mtpoxp d3fmkw9* u )sx.z- positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass o ) ucs-xcufxoqo .8/*mr) s8gwf 3.0 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 grjfmlq +:fjm:9 avity by the attraction of a fixed proton some distance above it. How far above the ele :mm:+9fjjqfl ctron is the proton?

  Two 0.20-g metal spheres are hung from s f2k /ursh q,*242nsioolxy8 a common point by nonconducting threads which are 30 cm long. Both are given identical charges,ss4,qolrs*xuoh fkn228 iy/2 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 ele)rd3 e6av4/t;se ecg p/o qn-kctric field at a diseaoq k g)nre/ v-/t34p6;dcestance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distanfa x 63* fs:x:5qg7gfwopxv klne166hv o,7 sxce of 1.50 m fxsp 6f a*lgx7nxxqwo1,fv7 hve56f:s ko3g6:rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of theophi1 ubg4kw/1d ih /: electric field 14hkdbgwu :p1h/ / iioat the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direcwev; .sf tqg8:ma3cm5-i +h scte(q)a tion of the electric f t3-; (m.:mqasta)esqhe+ fw8 cgcv 5iield?

  A 5.0-C charge is 10 m from a small test chargex,ct xd(2e6h d. What is the magnitude of the force experienced by a 1.0 nC charge,de6(2hx cd tx placed at the location of the test charge?

  Two point charges each have a value of w*pl vdtrt.a -es75;r 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the *rptd-v t;wsr. 5al7e two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter st22 ue.mkwiulol* , zu/ick and a -4.0 mC charge is placed at the 50 cm u,l2kom/ze2.w u i* lumark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at xpv-gm5jv7sj3b0( bn 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 the two charges is the electric field zerj j50b3g vn7xs(vpbm- o?

  Two point charges of +3.0 mC and -7.0 mC are placy xe ,kb(li-i5esl g:o+h2o 6eed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the:gey-+l526l,bk ehio oix es( point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The pa u tvg.y7a+;lvu . aaygt;p+7ast corner is occupied by a -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 are placed at thfimbe 92mt+sag)v23 fe corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1)iff9mevbt+m32 gs2 a) ; +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 (d eran(4 kx2 33tghvva charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fi3n xr(4 vdk2 gea3(thveld?

  A particle with a chantea ns 0m8-8r;/fi, 9ysfa llrge of 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 placeql/,61bgzoj si ts cgi/p64qg( 1. l7vgf ix:rd in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be susp.(sfi tig7/:bzj 6rqgp1l c gx vgqo6, li1/4sended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed ineep*5cgka q17side a uniform electric fiq7e* 5apek1cg eld, 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 carriesqe 5 h(n9aerjelr:f. d:v:/as a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from:9rl.h5e q r:d (sejnaea/:vf the sphere's surface?

  A metal sphere of radix)rtsl37lrfz.u1scc 12xu gtq- a 7 h8us 2.0 cm carries a charge of 3.0 mC. What is the electricu31lr1u8hc s7tgrs72a.xlz fqx ct-) field 6.0 cm from the center of the sphere?