State the law of conservation of elec;xbhi,9 . nos.ys 6zbzzxzt9cl; (2uwtric charge.

  Is it possible for twoh-xa4tgqz a2rf l9bb y i;*9s2 negative charges to attract each other?

  Is it possible for a positive and a negative c9m;6z,rjwel da, apk6harge to attract each other?

  A glass rod is rubbed with a piece of silk. During the p4j1sqx ;gjz0 x+ ye;atm u/)cdrocess the glass rod acquires a;jc)yea04/ dqzg js1m+ux x;t positive charge and the silk

  A proton carries a

  The model of the atom shoxm ov b6 47 icpy(ycz0mx*,j4wws a

  A neutral atom always w2 qz+zmr(c+)wjcf6b/p, dakhas

  An atom has more electrons than bo il rw:5ri)l t3dh1*protons. The atom is

  Materials in which th lyg3dx 12m4d do/odp-la1 lt1e electrons are bound very tightly to the nuclei are referrlx y2mddt1pa1do dl-o3 /l g14ed to as

  Materials in which the electrons are bound very loosely to the nucleib 6ct sexp .2yti b zza,slxh0gl+/(en:6p -z9 and can move about freely within the materias :et./6sh p+z6b9tn l pz,zgb2cly 0-(exxail are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Thes- e 4iz 2 gr7c6yhenjpg2m),g end of the metal bar farthest from the charged rod will be chargyz em)76gcri- j4s 2h2n g,epged

  Sphere A carries a net positive charge, and sphere B is neutv 5ejo6h7j p4fqiy5 aygae(13fv9f g/ral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correc4av7e65y9 1gq fj5/hip(vjf fa 3g eoyt?

  How can a negatively charged rod charge an electroscope positive,d6hj5 yf3 biwly?

  An originally neutral electroscope is briefly touched-*6+eubf j;+fl 4n mdyc lgk,z with a positively charged glass rod. The electro+-nl,jzcl 6+f4*;d b kemugfyscope

  An originally neutral electroscope is grounded briefly while 4sr)as c,v 5gua positively charged glass rod is held near i c5)av4,rg sust. After the glass rod is removed, the electroscope

  A positive object touches a neutral eleu ++b--lhqmq xctroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?mh+qb-xq +l-u

  A large negatively charged object is igbxgpor y n0w864 hfg3m-;6t placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it.w 6;8 o3ypbigmx-t046hrgfn g 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 0 nts-gjj(5 zhconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge i x9ad+m5czfw7 s larger in magnitude tm 59wza7 x+fdchan the second charge.

  Sphere A carries a net charge and sphere B is ne7nmd7y,n tmo l( 2h1c wn1o)hsutral. They are placed near each other on an insulated table. Which s,77th 1)n1mhn(nclsmo 2wdy otatement best describes the electrostatic force between them?

  Two charged objects attract each othen dz 9j49.oo7fve-exf c,ie)rr with a certain force. If the charges on both objects are doubled with no change in separation, the fovc7 zr .-4eeofn j9o9 i),edxfrce between them

  Two charges are separated by a distance d and exert mutual attriwq)quas* 00o active forces of F on each other. If the charges are separated by a aowi0 u)qq*0s distance of d/3, what are the new mutual forces?

  Two charged objects attract each qikpa: +(mh s(other with 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 their centers is reduced top( k am(i+sqh: one-fourth its original value? The force is now equal to

  An electron and a protonv.og cy): l,an are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the f)c vyna:go ,l.irst electron?

  An electron and a proton are separated by a distance of tgi )s;h gv /yv-r-.8g3oc/ezdz3stz1.0 m. What happens to the svg -r z/3ego )d;v-sz/3 .gzic 8thytmagnitude 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 distance of 1.0 m. What 4nao:w qd ee120*dvqm happens to the size of the feqm4e*aw0 n qod1:dv2 orce 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 square. When a second pf0)cq 8 ksctyfgj 9qf94n*6vhoint charge of -Q is placed at one of the square's corners, it is * 9qh8 yft) qfv0jsgc9nk64fcobserved 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 acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. When2prw e 1( th(1h-ms -cp4xwngr a second charge of +Q is placed at one of the triangle's vertices, 1tp(x(hr g- mcp1h e2 w-nsrw4an 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 not a vecsa4nk gcl(c0* tor?

  At twice the distance from aanr aoj.c,beg8f1) b 9 point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negativg2znr v30jug8up) y4ge and positive charge along the line joining the g4)pu g n yjzvg08r23utwo charges?

  Is it possible to have a zero electric field value between two posi/ sz4f; )v(fhmsuq 4qjtive charges along the line joining thfs4s (jm)4qq;hz/ uvfe two charges?

  Electric field lines nea-thfh conr;0 h9/o ,evr psitive point charges

  The electric field shk0cudpck8r - y:ehm/m,es; * lown

  Can electric field lines intersect in free spo7ia.1dadg c .ace?

  A solid block of metal in electrostatic equi et /y zwf6z an23q1/cyop38v 00lzqrylibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interior. yv yoez/ta0 /1znqrcfl83py30 zq2w6

  If a solid metal sphe/(e o, ( ms2dqo2eb vuk(zp,khre and a hollow metal sphere of equal diameters are each given the same charge,(kupozq2 2heesk/o,,(( bv dm the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests 5; 8ftkmafo 5+zm 4ujqon a wooden table in a region where a uniform electric field is directed straight upward. What can be said concernm5zo8kf5a; qjmft u+4ing the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elg kt 8cmeoy; xw.:7oadp1+ma.ectric charge

  A positive point charge isxop-o k 0qxo+xr 1p(n3 enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollok -ox(xn pxorq0p o13+w sphere, the electric field at a point directly above the hollow sphere has

State three properties of conduc+/zs h /vi997xg0jaaroj r9ldg s8 f-ctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron-jl a,t9r-o ff 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. 4p jyb p)ngk(,0i(e9 da0x5lcelq) bk How many more protons than electrons does this piece of plasqj54)e0xba 0ppcg(yi dbn9(, k elkl)tic have?

  What is the charge on 1 kg of protons;ipsep) (yofa 0qh)j29 ct q-a?

  An atomic nucleus has a ch*u1 ppynz ;(vxarge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1. ,f robj mj,fg901sij/5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is tmjji1s j offbr,0g9/,he magnitude of the electric force between them?

  A 1.0-C charge is 15 m frombyefn 2*dbox g:1-m-q a second charge, and the force between them is 1.0 N. What is the magnitud1bx*yg o-bf2 e qdm:n-e of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are tf:*rnh w/wo i6(vw7yyhey?

  The force between a o,rcg ori/1( k4p4+ nm6fdcn s$30 \; mC$ 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 th7fl7crq 6(e. pwbaj r:ey are moved to a new separation of 8.0 cm, what is the electric force between the.rjc rf7 pw(bq6al: e7m?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cha3zm u (+zuijikco+:t7rge 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 theu zmjiz k:cu+ i(7to+3 electrostatic force which acts on the charge at the origin?

  Three point charges are p w pi2cj(7knz;tzdz9n(z .bg x).o rh1laced on the x-axis. A charge of +2.0 mC is placed at the oric9zzozr; 7t.d kn2g . zpx(1iw ()njbhgin, -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 charge at the origin?

  Three point charges are located at the following f4k(und;*lwf positions: 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 magnitude of the fo;ukw (nf*4 dlfrce on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second 979,ctn2*vz ulxo0dlbv0 yiq point charge of -Q is placed at the upper-l0y 0 b xnt9vo, 9dquzl2licv*7eft 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 = -1.0maj9t4ho ci.g1.q58kfa l j 4i nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What iatq1foihm8.jg k jc59ia44. ls the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0z (w*n 5nizbdp2q740ki xqm .t nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5x72 pzw0 tznd *k4ii(b n5.qmq.0 nC charge?

  Three identical charges of 3.0 mC are place:en.)zorrad2 d at the vertices of an equilateral triangle which measures 30 cm on a side. What is the med:ar) .n z2oragnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which arey-jg3t 6ovr ,l separated by 3.0 m. At what point, on a line between the tw-jr3lg6t ov,yo 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 charge is at x = 4.0 m. ry (.c ,mmm2rhWhere on the cmh ,2(mmyrr.x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed l 1sz2g0honk s8 p-w-sqagx3.at the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that2380n k1l-aw ph.-gzsgss qx o the force on it is zero?

  A copper penny has a mass of .r,5s-d ytj ew7ogbkra*(;hx:op yg 83.0 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 cxw8u*88d, )pkc*raxd bf. b nof gravity by the attraction of a fixed proton some distance above itnp*8bcbd r8ac,. x 8*dfwukx ). How far above the electron is the proton?

  Two 0.20-g metal sphe* ve+w*fvhoe )res are hung from a common point by nonconducting threads which are 30 cm lhv* efwo+e*v)ong. 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 a g4 rt6zg03*c hei.m8 j(xsxjrcharge of +40e. What is the magnitude of the electric fie*t(4x 83 gjxr 6mir cs0ezj.hgld at a distance of 1.0 m from the nucleus?

  What are the magnitude and directionwh0bx; *zw3ohuni3/ z4wyb 7j of the electric field at a distance of 1.50 m from a 50.0- hy onb3wz3/jw x izb;*0h7wu4nC charge?

  A 5.0-C charge is 10 m from a sm:wv 5nnkidtc7+a 09ba all test charge. What is the magnitude of the electric field at the location of the test i5an+a9 0wct k:nbdv7charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of thex8y-oydj54 k1ixr+6 nk y-xfs electric fid5f -yy8nxjk1iky 6-+ oxsx4reld?

  A 5.0-C charge is 10 m from a small test cly/uz0y-c:p 8:indo5t uygiw lqk91+harge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location op5yti +0-n:1yqczu/ylldu 9 ok8wgi:f the test charge?

  Two point charges each k:7 le0+ftrmwj 5ik(zhave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betweee fmt ki:(7z+5lrkjw0n the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sti( (blhnqv;bpz7s 7o/ lck and a -4.0 mC charge is ppz 7/ h7bol;nvq (l(bslaced at the 50 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)yr3s*x.ba 2. muvuxdnmq38l 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 8 ) dl..msmnvqx uuy 33r*bax2the electric field zero?

  Two point charges of +3.0 mC and p0qtk1 me+xb b:bc7m* -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midw0m+ xbpb: 17cmtbe qk*ay between them?

  Three 3.0 mC charges are at the three cornnyvoumk(9 do/ e3-f z,ers of a square of side 0.50 m. The last corner is occupied by a -3.0 mC nz39,od /kv( - fyoeumcharge. 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 c) 5yk7 c-1-c i6vjwj:jvmo)a(v nvomthe 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 magnitud v)67a)movc1- mk jj on5vw(ciyv-jc:e of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it +ldmw5+crg2f yxj 0p(is placed in a uniform electric field. What is the magnitude of this electric fi yp0+ m+2x(rc5wdf jlgeld?

  A particle with a charge of 4.0 d ak t)rtxd-:;+ hxs+pmC 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 o u.jq(kvyetb-xcp6 /9f 6000 N/C pointing downward. What charge must be placed on the ball for it tok-pqbjy .6exv/ct (9u be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Tbs k6ib:p.o-*av 8 neghe ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the no8gbvp a.s:ie*k 6-bmagnitude and direction of the electric field?

  A metal sphere of radius 10 cm a2 p 1l;psd2j:0a :ucj 9mdz 31umlzltcarries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm stj u1ml:0c lmd 9pj2p 3l2;z d1azau:from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge uxg/1agy-8r m of 3.0 mC. What is the electric figygrx/1 a-8 umeld 6.0 cm from the center of the sphere?