State the law of conservation9;ju et/-)67lv xolpn ubzxe: of electric charge.

  Is it possible for two negative charges h lzey99/+ikebqjgh c:1f1 * cto attract each other?

  Is it possible for a positive and aiumoh* ndeoy77c2o. *rl r 31q negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glas81u2(q7aq 5 tu 2adtu gac,llos rod acquires a posit(lqq 7,l5du2guoatu1 2aac8t ive charge and the silk

  A proton carries a

  The model of the atom ,4cj yl.z t)a:ieuq o)shows a

  A neutral atom always 0)fb rh261xw :vvkhpu4.c z srhas

  An atom has more electrons thab dze3f:5gaum7/y,rrw a x: w*n protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refek5 wl43hdv fo)x-7aju00g llsrred to al7d xvwuoh fk-l 4)l ga50js30s

  Materials in which the electrons are bound very loos/ xc)wzxb( m 8(cmmx8xgqoj3v*d h7d5ely to the nuclei and can move about freely within the material are rezdxo7/m)xgh8xjdmqwb 3m (c vcx 58 (*ferred to as

  A negatively charged rod is brought near one end of an unchargebygo+qdmqg25v1 i .* kd metal bar. The end of the metal bar fa+5qgg* ok q v12.mdyibrthest from the charged rod will be charged

  Sphere A carries a net positiveyt:1m 9xi; hg 5/tvupl charge, and sphere B is neutral. They are placed near eacxg pt/ uiy:;15hlt 9mvh other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elect( l3l7 m8w-x+ wh:wrpm,adqw2lmq lz12xkvi4roscope positively?

  An originally neutral electroscope is briefly touchek7rrutdo3 :0f/qp ;ru d with a positively charged gl0duuok/rpqr3 tf :;r7ass rod. The electroscope

  An originally neutral electroscope is grounded briefly while n)i*d.yhpe.o a positively charged glass rod is hel.i)y o* dehpn.d near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral e( j2 iycya .b68cuei2vlectroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Wha (a6v.byjy cc 22ii8uet happens to the leaves?

  A large negatively charged ow .nwhc3 9hh.gbject is placed on an insulated table. A neutral metallic ball rolls straight towawhg.c h3h9nw.rd 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 ;ji9w7r uq*tky5;r-zn 8 qaoithe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects acf2. 5tcqv yps1fo:m (re separated by a distance d. The first charge is larger in magnitude ttvmyspcf .fq:o (1c25han the second charge.

  Sphere A carries a net charge and spherepr,gmkj t;o-*3v.4s4 daoeh m B is neutral. They are placed near eachmk . dop-sto *; am,j43verhg4 other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges oh(5o ipo p v53( jdzy)n+to kqjbtp-8o1gy3,in both objects are doubled with no+3(-5ohpt tqy5gzbn8v jo)ijod3pi k(, p o1y change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcesfr/2y+ 5/pnp01ra 7octiglu t of F on each other. If the charges are separated by a distance of d/3, what are y+ tc2la /g50/ ontf pp1r7iurthe new mutual forces?

  Two charged objects attract each other with a force F. What happens bxaa;g p 1s52auxs: :tto 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-fou5::atg 1xu; aap bsxs2rth its original value? The force is now equal to

  An electron and a proton are separated by a distan,ee5t yklp1 t7k5 x6wvjc/u+k0hkwx5 ce of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the fk,tw55 c txwy 7/ lj6x+kkh0kevpeu15irst electron?

  An electron and a proton are separated by a distance of 1.0 m. What hyj:zim)w5 f9rappens to the magnitude of the force onm ry)wf9:zij5 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 1;k mo(xx2 q3rrs3v1*t ; oq rxo(ivgam. What happens to the size *xror1x x( 1a;m2(ti v vosk33 ;rqgoqof the 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 square. W/z dl(itzk o,6+6 ueyzhen a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.utk/6zi 6lz+z d eo,y(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 tyjn7u;j,; 4 fosblz8 tqbe;6q r,wh .friangle. When a second chargujs rhl.bn4qbf; ;,7w8 oefj;y6,zt qe 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 +Q placed at one of the other vertices?

  Which of the followih+ojqni.r4f bo8tte8 w ,3 ut+tfi14vng is not a vector?

  At twice the distance from avp5c/vr i 87*iwi7mm)dt +ukj point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and pos.hlc vajk+/-; xdz; editive charge along the line joining the t za ;/ed ;lxh+djk-c.vwo charges?

  Is it possible to have a zero electric field value between two positz*cx(sy/lwh p2 *pyd,ive charges as w* ( 2h/,xpyl*dzpcylong the line joining the two charges?

  Electric field lines near psitive point cxh k kg mq1rtr95no.,)pr6- /dumc,n gharges

  The electric field shownhp*. qrzyk 4dsvk ;9a(o(ha9iq.h l.q

  Can electric field lines intersect in fyef0mg(gyd0a8;cw 8g ree space?

  A solid block of metall7da)s+uanrg 0 0rl b- in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field ibla 7d+an-) 0rlrsgu0n the block's interior.

  If a solid metal sphere and a hollow metal sphere of equ-hvjl y 3 un*n(2lz2ze-0iwoyal diameters are each given the same charge, the electric field (E) midway between the center and the surfy vh ez 2z3i(*n0-yo llnwu-j2ace is

  A cubic block of aluminum rests on a wooden tu)kz bxh7 bj4;able in a region where a uniform electric field is directed straight upward. What can be said concerning thj)zuk hbx47;be charge on the block's top surface?

  If a conductor is in electrostatic equilibrium nea 16kq1 za(3bp.r ucalpr an electric charge

  A positive point chargegx t r.c +8a,dl mg412.+prt ywtoqo6y is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow gx.t 8praoryom 4tl.q1g 2 w ++y,cd6tsphere, the electric field at a point directly above the hollow sphere has

State three propertiw::gs 0bl(poses of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one;l-4kldpzkey iit4+ 5 electron 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 w(+(p ztlhb72pkhvh frq4 v2 r0f; 6mlcharge of +2.00 mC. How many more protons than electrons does th klwfp6 rhh4pqlmv72;t+2h ((0z bvf ris piece of plastic have?

  What is the charge on 1 kg of pron ; pi,x,ye t5n2fvw b+nj0ty l56xbc1tons?

  An atomic nucleus has a8v cxrmdmt xq)xcv.4 ) 754utg charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated bg83+ r kxayi; 9yo;o fgpn*cv4y 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between them?rxy*+9; g;foagnyp3o c48v ik

  A 1.0-C charge is 15 m from a second charge, and the force k 0(nwy9lt-, fcdye. tbetween them is 1.0 N. y ed 9(nft,-.0twcylk What is the magnitude of the second charge?

  Two 1.0-C charges have a force between the6-- epfi t;digyhbr *:hc,5qum of 1.0 N. How far apart are they?

  The force between a (jv mo,9-mdib$30 \; mC$ 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 forceowsbe: *8: psg b/nqm6. If they are moved to a new separation of 8.0 cm, whatm* qs ::gsb8bwoep6n/ is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axifyklx2qhjok4 m21*2h s. The first charge is at the origin, the second to the right at x = 502h4kylkqx hj12f2m *o cm, and the third is 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 placed on the x-axis. A charge of +2.0 m2md2sl5mqho 2m.tp n ;C 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 directi5tpml.q22 2m ; sonmdhon of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 o-3gonueq( mvpoe))- l m ; (tlfky8+vmC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 omo-;eogl m)vq((tk3y8l -+ pveuf) n mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q i:4 t cdfa xk;epzg8gifu l/:u9(a f,8as placed at the center of a square, and 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 magnit:ae;ia 4lzg ft 9xaudg,:/cu8ffk8 (pude 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 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is c6wy-e9l(8rq1. 0zmzdxv iw yat (0, 0). What is the magnitude of the net force on the 5.0 mz80x dr-wvcq i(y ey 6l.91zwnC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q ;o8 wjcvwej);opri3q.4 ;eru2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at3jq r8.i4cowujevw;o; ;)pre (0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at t7znm6ugyy ngm3g36k x5 h .rt,he vertices of an equilateral triangl3m 6g k.n,zm7gy6 xn3uy5hrgt e which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q 1.3 wnr,xtttoand +4Q, which are separated by 3.0 m. At what point, on a 3 1,rt tt.woxnline between the 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 charge is at x = 4.0 m. Where on k +rv3a(dor5* a ko;7zq z)vgkthe x-axis can a third cv(5v*zkkaz ooq3d)7ga ;k +rr harge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is plk 0) gvre93saaaced at x = 2a. Where can a third positive charge +ek0vga 3 9ars)q be placed so that the force on it is zero?

  A copper penny has a mass of 3.eozv02:2i jrr0 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 the attracn5k/5n brattk p ;.7twgzun08tion of a fixed proton some distancwt /nnzr tbp;0g.k5a 8utkn75e above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hui ib4 w:li:x3wr77:bw1skhsh qi21x png from a common point by nonconducting threads which are 30 cm long. Both are given2wh1i3:s4i qi1xwpx7 :iwrhskb:lb7 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 chargdv4l ,ap-jcw+j n;qp p-. jlw9e of +40e. What is the magnitude of the electric field at a distance ojdpp;+ av 9j4,pwj-wc lqn- l.f 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a di,gx ,ra fpf*beekznncq+:s;*bc(c- 2stance of 1.50 m from a 50.0-nC r(z*ngff q,knbcc seab cx:2*+;-pe, charge?

  A 5.0-C charge is 10 m from alaz),gb;0la u, vid*egz fq2 ; small test charge. What is the magnitude of the electric field a0 ;vl u2 ib,;qzfazled,ag*g)t the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dir /dv)exrf a gmdw-jp q(,n2vay97)2 ycxmp s--ection of the electricx,ycm/g-vmx pp2f rv-w dn)q97a2 (asd y)j-e field?

  A 5.0-C charge is 10 m from a small test charge. What is the magniturbc5*4 41a(mduqra 4ld + ldvpde of the force experienced by a 1.0 nC charge placed at the location of the test charg 4vdrapdr4c54+*a(lbu m d 1qle?

  Two point charges each have a value of 3.0 C and are separated by a dj;ig/ mmnzkw2s; bjk* 15jr -mistance of 4.0 m. What is the electric field at a point midway between thejm2wz;-sn km gm5*/rkj; bji1 two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -sz2- twcin)dk2rx3z ,4.0 mC charge is placed at the 50 cm mark. 3d) ic- zzk,xns 22trw What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm it6gxd kl:loll e4:4c+qr d-.mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point odll+o. l d4lqc xg-6ike4t ::rn a line joining the 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 = 0.20 m. Wh5y8r0i61giv;ysz.g pm) a qr yat is the magnitude of the electric field at the po;mrp5z1ag)0 y rs.v qygii68 yint midway between them?

  Three 3.0 mC charges are at the three corners of a square of side )f0s3pent82)m, 5:ui xgjctp kj *xsn0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field a80jnjx)c ipt:m k3ux, ntg s25s)p*e ft the center of the square.

  Consider a square which is 1.0 w1 ne4we,u)h*l4wudx m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0enl1w4) ehuwx d,u4*w, 0); +4.0 mC at (1, 1); +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 u /a(*4-ptykbfi2+ysr 5n7 mvsxe x rp9niform electric field. What is the magniy+ptyfnv*x m-bkirpxs s7 ae9/54r2(tude of this electric field?

  A particle with a charge of 4.0 mC has a mass of7f lfdwb,0oj2 $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in apau9 0 jmc7u8hn electric field of 6000 N/C pointing downwamj8uh 79 0pcaurd. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carriemztzur9+xmu q/r1ok)h /v. 2 ns a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the m)1hq r nk+r m.z/vz2muto u9x/agnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magi0 3, or(s;b2,ewd-gixnxjnm nitude of the electric field 0b(gow2j,, m3esx rd n ix-n;i5.0 cm from the sphere's surface?

  A metal sphere of radius : c ojh6 yfbc 55e6u+4b*gyhkb2.0 cm carries a charge of 3.0 mC. What is the electric field 6.b4kbhyeb6 c6j 5*f hu +oc:gy50 cm from the center of the sphere?