State the law of conservation of electric charan so7e7 me:*age.

  Is it possible for two negatived:+xk mb*8f cic*(fym1bn 0 kh charges to attract each other?

  Is it possible for a positive and a negative charge to attract each otheb2.tlv5. 6,jkoyl s. v,accumz:pl6er?

  A glass rod is rubbed with a piece of silk. During the proc 95l8 tqwdrkp0ess the glass rod acquires a positrd qltk098 p5wive charge and the silk

  A proton carries a

  The model of the atom shows 5czdllwsu1afv8 ov+:ov q0 -6 a

  A neutral atom always h w bjas4z+41xyas

  An atom has more electrp29wydqlpcg:o2e ;c : ons than protons. The atom is

  Materials in which the ele9d- 14n 1oag,qr cr:n4 yyhroxctrons are bound very tightly to the nuclei are referred to asyqn 4hro49r1yxrn ,-:adg 1co

  Materials in which the electrons are bound very loosely to the nuclei +.twx3n8oemudd086eapt r k6 and can move about6t8eao 8prd. mdktx 6 e+0n3uw freely within the material are referred to as

  A negatively charged rod is brought near one ennw33xyk iba09 d of an uncharged metal bar. The end biky39wn 3xa0 of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and i,s 0n6rlf*us n 7+ tm/ a5rtv):cxrlisphere B is neutral. They are placed near each other on an insulated table. Sp,vrt + 0t*7l: scs r5lfar)n6mui xin/here B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope p,7kog cp qj(d.ositively?

  An originally neutral electroscope is briefly touched with a positively c*) 6ok8bfea2d vrgp0jer.d i,harged glass rod. Therdfj.),8*evo gbakp i26 0ed r electroscope

  An originally neutral electroscope is grounded briefly while a positively chadd+bb7b1 c,-ja81m( k wfan vdrged glass rod is held near it. After thec,-jv +d bnfmd( b11ka87wbda glass rod is removed, the electroscope

  A positive object touches a neutral electroscope7 ftr,oyo )-cq, and the leaves separate. Then a negative object is brought near the electroscope, but does not toucht yfq ,-oo)7cr it. What happens to the leaves?

  A large negatively charged object is placed on an insulo+ y; 4/yrdnfzated table. A neutral men4 zr/d;fy+ yotallic 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 touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulonoc wn1;js1bege)n+, mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firqxgoi)0dhe3*me9r t 3 st charge is larger in hmd 9etqr0oe3ix*3g) magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They axh:9ff :ovj6vbds6; are placed near each othv6o9 s6j f;:dx bvhaf:er 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 on i5wccuwp(kbslf6/v. if.2 9cboth objects arec/w b(ucsc9vf 6.i2pi l5k.w f doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcesz cwpo3ad( .3ctc0,-d tlg +fc of F on each other. If the charges are separated by a distance of d/3, what are the new mutu-fg 3cw.actd ct,( cp+0lz 3doal forces?

  Two charged objects fhi33 yec :m9sp2lehif )0b g-t8(qcw attract each other with a force F. What happens to the force between them if one charge is doublei 0( hg y92ip8b:33qecff-e)tshwml cd, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 mj:pa/51ftvsv . What happens to the magnitude of aj51/pvvft: s the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a dist-m vj(o qsp+,1cnd fdw4el8 /wance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placejvo4+8p/s,1dq wn( wl-cf dmed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Wha .p f.tvcn/peqxg3j0d*,kb .zt happens to the size of the force on the proton if the electron is move.c ed .t0jbp,vfk.z 3/n*gxp qd 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second poina ):kxl o-k xiu0,*lqut 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 three corners of the l uk xo:-0il)qk*u,axsquare. 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 u6b u+h/:z n:kik*tbs centroid of an equilateral triangle. When a second charge 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 +Qk6bsk t/u *:+z:nuhib placed at one of the other vertices?

  Which of the followiemik+z:-h+e t (9n uk fr,l8lfng is not a vector?

  At twice the distance from a point pqd4hz1xzi ev+1r8 u(c8:naolz k 8*j charge, the strength of the electric field

  Is it possible to hav*6ky 8 mhpec7ocr- d4se a zero electric field value between a negative and positive charge along the line joining the two p74cyd6moh*ks er-8c charges?

  Is it possible to have a zero electric50x6 xtt yp-jh- 6zrjcfa.a-ipnm 8+p field value between two positive charges along the line joining the two char-j 6za yxjr-mxt6 pin0h5cpfap t-8.+ges?

  Electric field lines near psitiv63qg s:rabtj.vaaeb( 73sypu6 )u tb)ktm;e /e point charges

  The electric field showuneb )nhvl94b )nn+9qn

  Can electric field lines intersect in free space?xe8po:6b3yiv

  A solid block of metal itlohxw,c.0q +n electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block'soxqhw .,l+ct 0 interior.

  If a solid metal sphere w1b zt2/yx gg:fd26eland a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surf/2tg1yx6lbz df ew:2 gace is

  A cubic block of aluminum rests on a woo 1hmd1, zs8eysden table in a region where a uniform electric field is directed straight upward. What can be said concerning 8es1 mzdhy,s1 the charge on the block's top surface?

  If a conductor is in ele9sipxx,1u,wdd 4k-a c ctrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow meta(sobp h34jtl 3;3rhrh llic sphere that is grounded. As compared to the case without the hollh;h3pb3r34(sjo r t hlow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conducto5z;bnkp 64 bdyd3 s460axjd-zsbh.tvrs in static equilibrium.

State Gauss's law.

  The charge carried by one electron ischk.qq -5qgn0:uz k; xchx8(e $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net char *8igh*j1kpy +zz*kp ry9e ub:;8ns jlge of +2.00 mC. How many more protons than electrons does this piece of p1 ilku9+yy*rzn zpkpb8*j; s j*8ge: hlastic have?

  What is the charge on 1 kg of p1v bv9csltwamn5 1y-d ki*5g *rotons?

  An atomic nucleus has a :cpah yp 1b080 tbgk.qvt((tacharge 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 -4.0a94r(y gv88fl4a2z2e l kukoa mC, respectively. What is the magnitude of the electric force bet l9zo 42vklge afa8a8uyrk(24ween them?

  A 1.0-C charge is 15 m from a second charge, and the force between(w xzhu56 uga- them is 1.0 N. -z( 6h5ux wagu What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How ,iu,tafrr2x6*j q;bf far apart are they?

  The force between a hk0 d)yy 6ah z,jxekjy0j3-ymts0 p1;$30 \; mC$ 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 ozcfl-udk:k(.7b/8 7mf 0zr-jz 7zz hu 5qgxf they are moved to a new sepf 7 7-m0zrx q-/ufz.l8z5 djcuf bkhz7goz:(k aration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first /3fnfeeolag1r1 9v9 lcharge 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 ande9nef aflr1vo/1g93 l direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are(we +7gg- uq4 nrosg0m placed on the 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 thn4gqo (w- 0ggure+ 7mse magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the foll:8 )mjy)mm jh py :h:cko:b blc56rx,rowing positions: Q1 = 2.00 mC at x = 1r cy:mklmm: :bjyopb 8 rhx h)j:c,)56.00 m; Q2 = 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 f3z65qjek0r3*h tfty cm)x0z 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 magnitude of the force that acts on the center charge if a third charge of -Q 0kq3 )t3jfh50 * ytxcf erzzm6is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); ezf u,*2ca.hrh)u qm8Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude fhea)cur *.,z2h8uqm 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) wn3c z(p5ckz*; Q3 = 5.0 nC is at (0, 0). What is the direction of 35ckpnzz w(c*the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plqkk,x f2k7ayaw:5) p,lw xh-9zb (okudm u33y aced at the vertices of an equilateral triangle which measures 3k-kyyk7a ad, 53bz 2fmh( q3 pu,x9uw)xwo:lk0 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 and +4Q, which are separated by 3.0 m. At what p*u 0m4 r8f9zdfqmdn(7r 6d4 rrq(eajyoint, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would d7 ejard6n qrfr(q4zufm dy*40mr9(8 be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Wp2rj a;yynlet21x 2 *where on thera1y yt2lwp;2 n j2e*x x-axis can a third charge 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. Where cl+e(e v zb4*wcan a third positive charge +q be placed so that tec el (vw*4+bzhe force on it is zero?

  A copper penny has a mass jfbjr+xjddk371- dj 2of 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 agklu-* xuq 5vn1ainst the force of gravity by the attraction of a fixed proton some distance above it. Huxv1 *ukl n5-qow far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by non gh0ipfim24 c6n.nkyhr- q5 t:conducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until thei4n0hm qk -ch ry6ni5gf2 :.tp angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. W; lz/p6t6hzsb1x ;okk hat is the magnitude of the electric field at a distance of 1.0 m from the nuclelpksbzk hz;; 6/61xtous?

  What are the magnitude and direction of the electric field at a distancenusd(a6xggeib9 8b(2zt vz962 i2ijg of 1.50 m from a 50.0-nC chargebu8d b6zgzixevj( gas2 2tg296i( 9i n?

  A 5.0-C charge is 10 m from a small testsdf. )r g/b 14 gsb)1ahnmppe. charge. What is the magnitude of the electric field at the location of)bmg dbp 1e.a/.nr)g 1psf4sh the test charge?

  A 5.0-C charge is 10 m from a sm,*c(0s2 xgnlo s s6rxrall test charge. What is the direction of the electric filx s(xg6o*cr 0r 2nss,eld?

  A 5.0-C charge is 10 m from a small test charge. What is;2io(mmb jk3 s the magnitude of the force experienced by a 1.0 nC charge placed at the locbj3;2(m koi msation of the test charge?

  Two point charges each hahc.:x h de8*pcve a value of 3.0 C and are separated by a distance of 4.0 m. What is t8p hc*chdx.:e he electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at tk+ bff io-pk; /y 2jmoy.4h+e5an3igh he 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electihfoifo+h a -43ep5jygk./;+y nb2m kric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter m473 s8td b k;lgslnkya6ny, /stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joinltn /b 6sld4m;,y87k3ks nya ging the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC aresc hac;(g1 x);lurt2 e placed at x = 0 and x = 0.20 m. What is the magnitude of the el;lcg(;axu1t)r 2chs e ectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square 7qz * b9f/uvqpof side 0.50 m. The last corner is occupied by a -3z* 7fpq9bvq/u.0 mC charge. Find the electric field at the center of the square.

  Consider a square whi1rzw laz6n w06 g.q:vs(fjy * tbhoq(,ch is 1.0 m on a side. Charges are placed at the corners of the square asl((1y. b0tzs*ow:gfqn, 6j qrah z6 vw 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 a uniform c dn,v0b.gy ;yelectric field. What is the magnitude of this electric fie,dy 0 gyvbcn.;ld?

  A particle with a charge of 4.0 mC has a f10xe-.xb dsx(js ar*d kp 9v-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 elece1ao )- hkmo/fa.qmi)oyb7/*sm p qc /tric field of 6000 N/C pointing downward. Whh1/-kpq a a/c/ oemi)7f sqb)*ymoom.at charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g;,nkpldypiyr *gmp+: a.o 9r-0 bokd3 carries 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 magnitude ano do0gp.kmakpyrrib3;+* -dn:9y l,p d direction of the electric field?

  A metal sphere of radius 10 cm t 0va15cc/z +nftlc.ycarries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfactntzvy/fa 0clcc1 .5+e?

  A metal sphere of radius 2.0 cm carriesivgb svmx-x, 4 tg8uht mw4;,, a charge of 3.0 mC. What is the electric field 6.0 cm from the center ofiv4xhg ts,ux m4; ,8bwv,- gtm the sphere?