State the law of conservation of electrt45up.w bw qd u:(n8zhic charge.

  Is it possible for two negative charges to attract f ,9 b.cxh9s.3hmjru weach other?

  Is it possible for a positive and a negative charge to att /5dvhv n*t+mpract each other?

  A glass rod is rubbed with a8spa b,evq.no99m :qi piece of silk. During the process the glass rod acquires a positive cha,ia8qpv.bqs:nm o e9 9rge and the silk

  A proton carries a

  The model of the atom/ nds+ze5l4i s shows a

  A neutral atom always e*e-5fxhh 1ka;j +kpshas

  An atom has more electrons th(v4b v;vc5+3z;l1xhuh ifmt oan protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refer;*c;4zww nf7 *v o s1,kfiyg gm4vwga4-/rgu nred tos4 gany;7w , f4-i *wgmrvuvkcf n g/1*z4o;wg as

  Materials in which the electrons are bound v5iy eb:c-r1n a+7rl 0bn jwok*ery loosely to the nuclei and can move about freely within the material are referrej:1ni y*k-cerno0 r+wlb5 ba7d to as

  A negatively charged rod is brought near gw3q:mmq*g )vm c qt4/one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charged*4w3mvgqg mm)qc/:q t

  Sphere A carries a net positive charge, and sphere B is neutral.u9ff9 jxwz o;btr8en0( 0 kyr;iz 1,xq They are placed near each other on an insulated table. Sphere B isu9kxq1fy0o0( r;be9z r ;tx,wjzin f 8 briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chg c ,d2-t 7xaytn.fi.garge an electroscope positively?

  An originally neutral electroscopej d58tit(3v*h kyw6ei v8e ub. is briefly touched with a positively charged gi8 ieuty86k( wj .bhe5vdtv3* lass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a posit 0p9twg zbd4:zively charged glass rod is held near it. After the glass rod is removed, the e0 z4dbt9pg:wz lectroscope

  A positive object touches a neutral electroscope, and the leaveuy 72neren 8)h.pc* kfs separate. Then a negative object is brought near the electroscope, but does not touch it. e2.*fne7 8)uhrc pnyk What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutradqf :q ht(5a x8s*e1/np-f zgfz0y /brr5jhr4 l 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 thef5q :rh/b-ah f8sy(/*re5zr n1tx fp4dgqj 0z 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 cons q- ow:9p:0k7ydef jwaf4tmzlp6(/mqtant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firstx4eb:mv ;.6 uq n5ettn(gug(k charge is larger in maet6bugq(v: x;.5( temkgnnu4 gnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They a8.hk3jkb j4 4 qt9q-ils ) aolvht/lv5a-cnq2re placed near each other on an insulated table. Which statement best descri clvh q-q5s3.ljo2 qb j8-l 4tnkh)9ita/a4 kvbes the electrostatic force between them?

  Two charged objects attract each other with a cej;6yj a5w w4wyrtain force. If the charges on both objects are doubled with no chan5w jww6;j ya4yge in separation, the force between them

  Two charges are separated by a distance d and exert mutuaa/y, mltuku,,s/ (veyfr k68h l attractive forces of F on each other. rf k/t(,leh u8/a 6,uyv myk,s If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to qc(ue b,ii 2rcl n u-u dt1(ka+b.p3j.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 original value? The force is now.(ceuud bli2jpbti u.+cr, -a(qk3 n1 equal to

  An electron and a prot rrr/tz5yy)x c)c4,y mon 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 przycm4rc5 y)x / y)t,rlaced next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. W5nd/2cg f +9fjx1gyhgtnl 41epa1ut4hat happens to the magnitude of the force on the first electron if a sepfeg/g5 4nnl1uxjytafh9 14 c2 dt+1gcond electron is placed next to the proton?

  An electron and a proton ar+3 wv.noag2txnv8v 3f e separated by a distance of 1.0 m. What happens to the size of the force on the prox.vwvn8tafvg3 o3+ 2n ton 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 po+zcia, c3fmf3 int charge of -Q is placed at one of the square's corners, it is observed that an electrostatic f,i +mf 3cca3zforce 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 pla wsz8gk7(efra.a1y hy 4 8z)olced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electroz7yhe 4s 1rzyg 8a.f)ow(8 aklstatic 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 ax,gxm t-;7 vwc vector?

  At twice the distance from a point charge, the strength of the electysc o3n;)sk an /h8r(anteu .;ric field

  Is it possible to have a zero electric field valh i7qce 6h pea; e/14-(ok;(f)e,wyaltci wbsue between a negative and positive charge along the e bes;6o/w) pkh,c( leq( 7;4wa-h1t cyi ifaeline joining the two charges?

  Is it possible to have a zero electric field value between two positim-e4-u4pbd p5d m3shs ve charges along the line joining the two charghubsm e3-ms-5 d44ppdes?

  Electric field lines near psitive point c/z z,xf(ydt8-y1s gacharges

  The electric field shownxsi z xbrj5p8/-t /m,s

  Can electric field lines intersect in freeh35. -;pkkcc pu g+fj 3ydnh.t space?

  A solid block of metnqbox :nkczrzj 0j fsi) +)/* jb2(b5wal in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerningn0oz jxzb*bc2sqrfj j (bink )5+):/w the electric field in the block's interior.

  If a solid metal sphere and a hollsltnl1iy20j) (k axy8 ow metal sphere of equal diameters are each given the sam 2yxij8k yn01( tals)le charge, 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 wheremweoym :.x: 8yx3a9 y-n og5ve a uniform electric field is directed straight upward. What can beyxyo-y gmoe.3n5 ae8 w:vxm: 9 said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electr jwrqt-(ea0v6g/o2tm+m uh v.ic charge

  A positive point charg)m xx9xfwj scj66n(5le is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow spherxsw( fmjxjxn) 566c l9e has

State three properties of conductors in static equbx 4d cx57q+ggilibrium.

State Gauss's law.

  The charge carried by one el d7 qr6j)xxhrwg1x1 x* dl8b+jectron 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 more protons than est: wmxztt4*p z h9q70lectrons does th xq9tt zmt4* p:0hwzs7is piece of plastic have?

  What is the charge on 1kpztcl0)x;9mu wh)o ; kg of protons?

  An atomic nucleus has a f c7/fc fdf og5+m.0encharge 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 values of 2.0 and -4.0 mC, * iuzhwmq2+5i) el r)v0i a.wt(jauv-respectively. What is the magnitude of the electric force between them *0(2 aa5w ej+ )vhm-ruiwi ivuzqt.)l?

  A 1.0-C charge is 15 m from a second charge, and the force betw7aw)pz. kof2j96 zvfnl0ci ) ) fny5bdeen them is 1.0 N. What is the magnitude of the second cy ) ifzdv)wn9pz)f. 5flnjb ka 7c6o20harge?

  Two 1.0-C charges have a force between them of 1.0 N. How ma yjx .k)wsuf9j5n s.zu59j,far apart are they?

  The force between a ltxi4c eqt o 6n7lu+ c8x6h0d6$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, *0vh embz:bx 7;l3fct31znkw experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric fom*1wl;tef 3bnz37c: khb0zvx rce between them?

  Three identical point m f :vhu)pt*lvdu(h3(3mn1yk charges of 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 am3pu)nvd * f uv hmltk1(y(3:ht 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 mC i. s+vs +spuu1ks placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mv+p s1ku+u.ss C 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 positions: Q1 = 2.kj,((a .ww hyesso8 o-00 mC at x = 1.00 m; Q2 = ,h8jww (.y oo-s ekas(3.00 mC at x = 0; Q3 = -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 point chalde z :e.b6(yl(qh0 qjrge of -Q is placed at the upper-left corner. It is observed that an electrostatic force qyd l6z: qe(h0jl(b.e 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 = -1.0 nC is at (0, 0.10 m); Q gnhmnq4/ *b(4dxsgwhbf 5* z93 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charghbf hn4g nwsx5z/**(mg d9b4q e?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 562azzdv pwoj++nbe8= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). n vez8z+dp2jo+6a b5wWhat is the direction of the net force on the 5.0 nC charge?

  Three identical chargjmzv:di01f)tjmga 10:m5skj es of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic f:z00m idt m)1jmg:5a1 js fjkvorce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wt:p 1dpw0 vlql yv7*s,je +p7chat point, on a line between the two charges, would it be possie07qsvl,1ypj: +c 7wt lvd*ppble 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. Wtwkh 5sgu0+s9here on the x-axis can a third charge be placed so the net force on tsk5h 9w+g0us it is zero?

  Charge +2q is placed 8nzkio:0nlj- : u)-slyklzols 23 a2oat the origin and charge -q is placed at x = 2a. Where can a third positive ch:is)o luo kljzl- 8yo2zn k2l30as:n -arge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of e-fmf;d iba77$4.0 \times 10^{12} \; electrons$ 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 forcetjew76: kxt s9 of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the protonk s7xj:9w6te t?

  Two 0.20-g metal spheres are hunyk(. u) fugew-g from a common point by nonconducting threads which are 30 cmkyufew-.(g u) long. 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 chargn)- *gbew 0kw0b,n doxe of +40e. What is the magnitude of the electric field at a distance of w), o0gn*bebkw0xnd-1.0 m from the nucleus?

  What are the magnitude and directionuph g*hu0e. s1vz7 dm0 of the electric field at a distance of 1.50 p1 hs.ge0*u0 7zmduv hm from a 50.0-nC charge?

  A 5.0-C charge is 10 m froylpo hx9h pa),9v4ky9m a small test charge. What is the magnitude of the e,4hxp k999p) yyvl aohlectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is thewq;rbl.t 9yt,+ zvx; v direction of the electric fiez+ ;qr,9lyvb txw;vt.ld?

  A 5.0-C charge is 10 m from a small test charge.qg/7ms4 k itv1 What is the magnitude of the force experienced by a 1.0 nC charge placed at the loca mki4qstgv7/1tion of the test charge?

  Two point charges each have a va9p;)t k6p l0xvyff 9 a(cmw;lulue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the tpa6l u;yw0v ) k;9ff9plm(xc two charges?

  A 5.0-mC charge is placed 29. f.wn 8xryma(glpjat the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the el9rn.m8.ag yxlw(fpj 2ectric field at the 30 cm mark?

  A 5.0-mC charge is pl,-v*dl5jm: o 1g2wsnc4 sbc9ix err,saced at 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 i :m elb r*vi,cjr-sn 5sdwx2c1,sg94os the electric field zero?

  Two point charges of +3.0 mik 2 c4w8ray-8jf .fkdC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field aki r.cfja2dy8 8-4kf wt the point midway between them?

  Three 3.0 mC charges are at the thrdso p1,ob2/r kee corners of a square of side 0.50 m. The last ,o p12/ ksbodrcorner 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 ar2x 0dw5m0wxg -w) qe5aewnrg; e placed at the corners of the squmwwwd-ge0;n a e0 w5xq2gr)5x are 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 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 +6 51xewoo mpbxq5s273moq cha uniform electric field. What is w53 hc7xxmqo5 ms o61eqpob+2the magnitude of this electric field?

  A particle with a char y9i4ao7(esdsi)yh ;i ge 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 placevb ,a y9qe3q( (ybiqd)viq5yfu1+cc ; d in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be su91q qq eq(cicivydv( ya+u53 ,bb); yfspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The balw+cr(00pn+yrr . ih oyl is placed inside a uniform electrh0or+ p0i(ycrn.+ w yric field, 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 carries a charge of +2.0 mhmet1ja m6 3a:C. What is the magnitude of the elect jat31 :a6hemmric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carri1mv;eu(zluo3u 1e b lvj.s- x oeu.8:les a charge of 3.0 mC. What is the electric fie o;sju-1mou.(ele 3u l vvz18: xlueb.ld 6.0 cm from the center of the sphere?