State the law of conservation of electric cha)-guazjk.1 ajrge.

  Is it possible for two nega3 cbex2p hq7ln*qi*h +:rvzv7tive charges to attract each other?

  Is it possible for a positive and a negative charge to attract each0 k2ijnug,r/ s other?

  A glass rod is rubbed with a piece of silk. During the pro0lsj-e( 1coz ncess the glass rod acquires a positive ch-l 0ezj1(snocarge and the silk

  A proton carries a

  The model of the atom s3at)l/ jo 6fe;i lz*ojhows a

  A neutral atom alway/*5 zuf(ikzi phuk (,puzy6m/s has

  An atom has more electrons thanyrex30-b-vde 2 ied 1wi++skl f;ta/d protons. The atom is

  Materials in which the e.:l 0agnekl)q.kcw,kpm ms1 v /-2 jojuw)b)vlectrons are bound very tightly to the nuclei are referred lm-)ms,p oj.wk)ael1/.:2cv v gkqbwju )k 0nto as

  Materials in which the elc bog4g;-buo-i(c( a.kn9ye wectrons are bound very loosely to the nuclei and can move about freely within the mater9cgge-kui( (-w;bon a 4 cby.oial are referred to as

  A negatively charged rod is brought near one end of an uncharged -c-veb6.xwc z metal bar. The end of the metal bar farthest from ve-zx-.wc c 6bthe charged rod will be charged

  Sphere A carries a nethco yyvnl+8bx2(s0u-i n :sehs)- u8p positive charge, and sphere B is neutral. They are placed near each other on an insulated 8u+h-conhep:v bu2n l sy yis80s(-) xtable. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively ch/;-uk vtzva9wtl,b h +arged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positiqu( ttuq. vu5f6o)jp 4vely charged glass rod. The electrosc) u u(.4pj5futqqo6tvope

  An originally neutral electroscope islg(xv 73 vncam 5y,/jy grounded briefly while a positively charge 35 ,gja/m(vcnyyvx 7ld glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, anz lc38:nwf /j ava/)zxd the leaves separate. Then a negative object is bxnlf :w/3) v 8czaaj/zrought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tgqegv ) m)q0ho,rgj( . rlf;h-able. 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 not touch the negative object. At no time does either ball touch the negative object. What is qlm0vf jg) .h(;her )-go ,gqrthe final charge on each ball?

  Charge is

  What are the units of thev4m*on.pk/ +,4 zi qmuy1vf bk Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d.:su l qpa kk7dh;c) p,a;,gmsks 2ox, j)u*5tr The first charge is larger in magnitude than the second qmtkuj5s xa7k, pur*hkg,)pc;2 dlaso, :s) ;charge.

  Sphere A carries a net charge and sphere B is nejqbsxlx 4my+1 n;r(zb/b +j2 dutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betd/1mjxb4 x j;bnrs++l 2 (yqzbween them?

  Two charged objects attract each other wc9 uk )+/vhsjb*hs4/ol. sp;:gbywdpith a certain force. If the charges on both objects are doubled with no change in separation, the force betweec b+ 9d l/*vsoshypkgb:4uw hps ;/.)jn them

  Two charges are separated byaq-,w1 hqgj iav *59)aaojsx2 a distance d and exert mutual attractive forces of F on each other. If the charges are separated ao)wqq* x9igah ajs5a2v ,j1-by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. W114hpy2cit1isx1u7 lbr . p fnhat happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distt1 .7by4 cuplx n rihpfs2111iance 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 m. What hajz/unvrx i s1m va k+,o 0:r48r/qngv+ppens to the magnitude vrismn / r+vgzr1+au0q v, /n:jk8o x4of 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 distance of 1t mpr-d3 9nj :y5rgw6ye 2nv6v.0 m. What happens to the magnitude of the force on the first electron if a second electron is placy:y5 6nt96rge vn jmp2 dw3v-red next to the proton?

  An electron and a protaf 6yxw:ah e4c8-gf/s 9c 2ydxon are separated by a distance of 1.0 m. What happens to the size of th:y 9fxa46cy xesh gc2/df -8wae force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed8phl4pp2 t5 )nc0nhl0yx5 j sk at 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 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 th2plk04h n5tl5nc ps0ph)y j x8e 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 equilatertlsisc5v g8 - qf-are*cj5l f1i 5*:kpal 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 char-i lj*s5f5aic* p5ks v8g l- f1c:eqrtge of +Q placed at one of the other vertices?

  Which of the followi/340dqwj7tw.izj-: jur gasj ng is not a vector?

  At twice the distance from a point charge, the strength oyulf/v . 6:fp yea+m3y2su 4yx )yiv6tf the electric field

  Is it possible to hav m jo3ygacbzrh)izszh0+/ +o:13uez2 e a zero electric field value between a negative and positive charge along the line joinz+3rcmjszh 2zyg u z a/):oeo31 hbi+0ing the two charges?

  Is it possible to have a zero electric field value between two positive chargejk4wd9/pqnlp u)b; b22f; ldns along the line joiningj )2lu nb w;/l4p;kfdn 2qpb9d the two charges?

  Electric field lines near psitive ua6t w4h 2chhx8gsf ergi-b+-- 0gpu 2point charges

  The electric field s(w ca+c/ l.a0ksv tnt5hown

  Can electric field lines intersect in frenmfmcx+c i3- .e space?

  A solid block of metanywo hn;02k) zl in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the e nw0ky)2nz ;ohlectric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal(ndn; sm ag12z diameters are each giveadgs (2 ;1zmnnn the same 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 where a un9(m3 x 67 wyiaqi e2mbffhi5t-iform electric field is directed straight upward. What can be said cont5 23eiw( byihmi 9x-mqf76facerning the charge on the block's top surface?

  If a conductor is in electrostatic xt 0iph+g(ra8xwe7 0qequilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundeulqqo3 3fwy/ x:kwefl51e*)qd. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere y:qe5 )3 /f uoqk ew3*lqfwl1xhas

State three properties of conducaxqi)vh1z0v2 h 4oan 277xna btors in static equilibrium.

State Gauss's law.

  The charge carried by one electronr:3wrxg,*j z x 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 ma 6svw57r+cq m 5sscej-ny more protons than electrons does this piece of plas67 -cc +s5j5msqw evrstic have?

  What is the charge os: d-;tr h-fqan 1 kg of protons?

  An atomic nucleus has a chag9x toh)t b kwyu9a;4.rge 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 e3 *6d/p xsby jlqv:l9cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forbs xp j*6qd3e:v lyl/9ce between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweeu3)e r+ehi /bfn them is 1.0 N. What is the magnitude of the secondf /r)eieh3u +b charge?

  Two 1.0-C charges have a fj,+2w0x ;ohavd q k9qtorce between them of 1.0 N. How far apart are they?

  The force between a us.,dmfon r);cc9 r,j $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience 5e*t64 uh1gyem1ww q: .tbovu a 1.0-N force. If they are moved to a new se6uyhu1 bqv.45 * mtoww:1tgeeparation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are bx;8fj r - wd k7/,d ut 8u:nvlseob;99ku:ndcplaced 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 th7/no8vk: ukuux ,8dw9nldcr b:;sjd9 ;f- teb e 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.w2w/a, . tqogs0 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 electrost.,/o2t wwqa sgatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = b9;09lxkqg5g3(exsud4 j y r8yn n r3f2.00 mC at x = 1.00 brq y x9033ys4f;grlnx89nugd5j e( km; 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 3pqtgek)-hqskg39a . 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 fq 3as-9k .gth3qpegk )orce 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); Q3 = 5.0 nC vb/tsl rd9:kv ad6a3(63 +c2 yg w,fcssssa,cis at (0, 0). vd bsa(,lva c s:kg9 3ss/c23r6dwf ct6+sa,y What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);le3r6yz3; gv g uv w5/is.fv3e Q2 = -1.0 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 5.0 y 3g;fz3v.5 6vs3ie/vegwu l rnC charge?

  Three identical charges of 3.0 mC are placed at the verticeoxe*)ag/ )o4sho)r df8-mbh ns of an equilateral triangle which measures 30 cm on a side. Whbr84o)om- hs*e g))df xohna/at is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q andecpbc+. + ;s2 sm/bf nc*3cir1spfwd 2 +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the elecp+cs*f 2swc;mb3.2f1+ nd ebrc sp/ictrostatic 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 eis+l;s bp/i/b2 p0gw m. Where on the x-axis can a third charge be placed so the net force on it is zero?/wp2e +gib; lsis b0/p

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wher+m: eu or vsg5(kb)/s ym3v2lme can a third positive chb3+g vmssyl/rom v5:k() meu2arge +q be placed so that the force on it is zero?

  A copper penny has a mass or89ina-vg ui nio -8+ef 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)tvbjq:0bc e *7dgt( 3jchzx9y x5td/ gravity by the attraction of a fixed proton some distance above it. How far above the electrot5*qd3gc/dc)e x bvtxtz7y 9j (b0j:hn is the proton?

  Two 0.20-g metal spheres are hung from a c6 a-pf lddgsht0-d5q4 i t:e,fommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces the s ddfdi:-tg0 - ef5h4l,6qtapm apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a char3 dy-g rqm ses;ao00f9ou1+f jge of +40e. What is the magnitude of the electric field 0+efa;y9fo grq13 ssu -o0mdjat a distance of 1.0 m from the nucleus?

  What are the magnitu d k sw.:zv7/gebqy+45eg7zyade and direction of the electric field at a distance of 1.50 m7gy /7v5 ye gza dq.k4w+s:bze from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a ; 0wnhx4 ajaae9m0/lvsmall test charge. What is the magnitude of the electric field at the /vm hane ;l904xaw0a jlocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whavi1 tn:;5b acbl4mju 0t is the direction of the electri tvl:n1uij 0mca b54b;c field?

  A 5.0-C charge is 10 m from a small test charge. Wha7j8ju )pny6lpn62xx lt is the magnitude of the force experienced by a 1.0 nC charge placed at the locatin)x jupp6 x6 ljn728lyon of the test charge?

  Two point charges each have a value of 3.0 C g9 )5w ualtyn1spith1k 75y(sk z5./cfnqu5 uand are separated by a distance of 4.0 m. What is the electric field at y 57q5s h55lkpk9 1szty ug/ufa)c i1.t (nwnua point midway between the two charges?

  A 5.0-mC charge is plac(nm)u/-m.ti7ojh;: jh)e my0 rrbu3ufx b) ybed at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electe7b0jt;jh.bbu-3) rmy)fhir) /(u : uommyxn ric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter16wkr l)b ,fr/ojrf 2h stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges /orhkr)6fj 2l rf ,b1wis the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 an3 j))2ofhjtsvd x = 0.20 m. What is the magnitude of the electj vfj3ht2s ))oric field at the point midway between them?

  Three 3.0 mC charges are at t c g78wpvbz.xwqo2:9f he three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the sqfw2q. p g ow:xzcv7b89uare.

  Consider a square which is 1.0 m on a side. Charges are placed at the corner9l di3 mh9aee,s of the square as follows: +4.0 mC at (0, 0); +4.0 9e ie39ad,mhlmC 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 unifgvyt7 p+g2;xn: iu4gmorm electric field. What in7v m:y;2xt +i4ggpugs the magnitude of this electric field?

  A particle with a chwhvk fmg6,kp r;a;k 08arge 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 placed in an electrigt fch o8 kizc;i1u+dqp2+b:7c field of 6000 N/C pointing downward; c 8+tbu7k2 idozq p1+h:icfg. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of lnd8c3:ijfy1f0 go 8 o-2.00 nC. The ball is placed inside a uniform electric field, and is g8:3j0 dc i8yoof lnf1suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 3j/6mt htg6brgs1g. e10 cm carries a charge of +2.0 mC. What is the magnitude of the electric f rst3.jg1t/ g gbe6hm6ield 5.0 cm from the sphere's surface?

  A metal sphere of radit;ni+d+ gkxqc*(v+kz sy jt 7irx/-z 9us 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the spheydijk+k( gxct/it+zv 7 zq-;+ 9r*sxnre?