State the law of conservation of electric cha /t amt(8:hefc7b0,she u5ai mrge.

  Is it possible for two negative charges to attract each oth sff*2/,q3 zndkssbs: er?

  Is it possible for a positive and a negative charge to attm60g uw3: sancract each other?

  A glass rod is rubbed with a piece of silk. Duri 21 .6ejmms;dqhenw1;o4 hb(9nr yyulng the process the glass rod acquires a positive charyl 1n. 6m(yo9n jb;s1remh uqhd2e;w4ge and the silk

  A proton carries a

  The model of the atom showsw7 u yj4dh:5un a

  A neutral atom always ha /im rhqh2+ys0s

  An atom has more electrons than protomavzph, q.z k-pvotd .w;26x .e6mk4wns. The atom is

  Materials in which the electrons are bound very tightly to y2ps4.xwnp;ou0- bzt the nuclei are referred. spxu ;24ob 0tzpwn-y to as

  Materials in which the electrons are bk ;mpsiz;k2(4 qqyrr )ound very loosely to the nuclei and can move about freely within the materi q) (k;2i; rq4pkmyzrsal are referred to as

  A negatively charged rod is brought near one endv:j3d8i q;q -pg bprhqd. / 2j1u;msih of an uncharged metal bar. The end of the metal bar farthest from the charged r ij8 dvq3bs 1;-p/2i h:.;ghmjpudr qqod will be charged

  Sphere A carries a nv2j5sos/qccix8s npw1 9j;qf 4)wz-i et positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Spn; 2q pcjixfwsqs)5- v4 j/1o8s9wi czhere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrtckmg) at7: 14yf hpw2oscope positively?

  An originally neutral electroscope is briefly touched with a positively chazma ;j8)1 j9)jhrfe lqrged glass ro )1ja9r8jjlfheqz)m;d. The electroscope

  An originally neutral electroscope is grounded briefly while a positic2 xy x.:mx nn75muc:jvely charged glass rod is held near it. After t nm u 7j2x.ycx:5xmn:che glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and thea4m vgx w8;wu8cjyzf 5wy88m 5 leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What hjcmgm8 vw 85u5w;xf8w azy48yappens to the leaves?

  A large negatively chg93 / axvv yp6 va7+ztj;paq89kt( mlfarged object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touchvpam6 p+8q9ag;tft3jv9l z y(x /ak7ves 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 Coulomb ceq8kw )d*b8j817asbznev g5nonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distaup20nzq9e n:q4 1-uxg+efoaw;/ mei pby. j5b nce d. The first charge is larger in magnitude than the secyname ;5ebg q/ 1nb0.9:4qo p2x+p-wu jzfu eiond charge.

  Sphere A carries a net charmink8 lo i) 4-natb1x8ge and sphere B is neutral. They are placed near each other on an insulated table. Which statemnn-li a848kmxoi 1t )bent best describes the electrostatic force between them?

  Two charged objects attract each other withst3/h 4vcv2+ogxyu6b a certain force. If the charges on both objects are doubled with no change in separation, the fo4h6byvt2oc3+/ vgxs u rce between them

  Two charges are separated by a distance d and exert mutual attractive foxeb83*.g * mb)7iidg5 7 p cekckv,uutrces of F on each other. If the charges are separated by a dist.k8b*tk dgpb)c, * 7ee7i uv35uxcmgiance of d/3, what are the new mutual forces?

  Two charged objects att7d:pm *6s3br 7wxro0 sb/m ievract each other with a force F. What happens to the force between them if one/xo pemsv7br6idm rbs03:7*w 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 equal to

  An electron and a proton are separated by a distance of 1.::(lpolfobd9 g573cx p0 rh sa0 m. What happens to the magnitude of the force on the protb:5h alo0( g7pr3xso d fc9lp:on if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m) u(lwsw e6d;0h, zlb3ss7tj z. What happens to the magnitude of the force onw)7sws lbd tj3 z0(sl;,e 6zhu the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a d:co o b*b +0v2four(teistance of 1.0 m. What happens to the si:2cbo( tf o0vo*+b eruze of 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.s.g4kimgk -8 ev t.jb; When a second point charge of -Q is placed at one of s.mj-b .g4 kv;ei8 gtkthe 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 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 u*axm: *l/f3+ucj 8jjavi ,j c5slc6 ois placed at the 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 +Q placed cj l/uam5s ov3cj**, c+fj:ail68xujat one of the other vertices?

  Which of the following is not a vectoeg hp;*/ftio f3*3vt . ugl9rfr?

  At twice the distance from a point charge, the strength of thn +(pqr-r.g+ , x 3wcynd6z3alht2 rwle electric field

  Is it possible to have a zero electric field value between a negative and pv)fel-sabaug2dk 98,.o ,rk o dvyr42ositive charge along the line joining the tw-vavbgds2)a 92ko , . r okd48rlf,eyuo charges?

  Is it possible to have a zero elwv7r2 g1 vgp 3b 0mtagmj422zzectric field value between two positive charges alozv2a4 v2m2gjwt30mb1 gz gpr 7ng the line joining the two charges?

  Electric field lines near psitigxd;aj ixg; ; f6ax2j,ve point charges

  The electric field sx4 i/l6q8*1 vxvv p , 0lvwri7xbvvx6jhown

  Can electric field lines intersect in free sn)ksekhoxyhl9 ra( 5ygw(f:. 5s(l-xpace?

  A solid block of metal in electrostatic equilibrium is placed in a u++a.v4g*r )(1 ls5)lbnvgpub glhkqi niform electric field. Give a statement concerning the electric field in the block's inqan hvr4blg +vg+li s*g)1l .u)(k5 pbterior.

  If a solid metal sphere and a hollow metal sphe+k ,sk4rm y b,1gz;icteg g(:zre of equal diameters are each given thezr1, ,ke+g:bt( 4 gc;zygkims 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 wher t8av4dv f-b;oe a uniform electric field is directed straight upward. What can be said concerning the charge on the block'sf8 t 4;dab-ovv top surface?

  If a conductor is in electrostatic equilibrium z42kgewpg g4( near an electric charge

  A positive point chargew+nd +en3q+ *m sp9dm2pjed4 h 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 sp*m2 m3e9s+ddq4h n +nejppw+dhere has

State three properties of conductors in static equilibriyf d a0m off62pi2 vlay6();leum.

State Gauss's law.

  The charge carried bfi+ e15v h7kla9dg6a9 r5szndy one 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 n1hb5 04f2g(up rk*igv;kibl r s-tqw8et charge of +2.00 mC. How many more protons than electrons does this piec0bf2lbrspv14i8 *gqh - wri;(uk5ktge of plastic have?

  What is the charge on 1 kg of protons wbh: ts)pgx6 jm7 1-+eb9pczo?

  An atomic nucleus has a charg+3e+ugxk 5 ruwe 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 valu 60yl*viqgpg(8b,pbv es of 2.0 and -4.0 mC, respectively. What is the magnitude ,6ggyl *v0bip(vq8 pbof the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them kzy 8w1m3p 1nua,uh.8eycoqc k6 z.4b4h(ian is 1.0 N. What is the magnitude of u8ez1 mi.cqbyph 44( a n kkn68,ya3c1zwou.hthe second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are 0 e,3 pvl3v1a0g7 kvulam a5ihthey?

  The force between a y8d-h9n/b 30nc jwqn6huyam 7$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, 8ou;si hhe:d;7l y)ayo;xwe-experience a 1.0-N force. If they are moved to a nhhu7lox;s eya;d 8- :)e;i yowew separation of 8.0 cm, what is the electric force between them?

  Three identical point chary; t +ajwk*pgjj/ ar59ges of 2.0 mC are placed on the x-axis. The first charwt9ajkap* j /5; y+gjrge 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 the electrostatic force which acts on the charge at the origin?

  Three point charges are pla4v(mo8twt, ki0iodc1l u1 h8wced on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C ttv c8id4o1l1,tiwhwo8( u0km o 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 4 wn9d(t wx7eo3hu/ kcare located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = dkn/wh uc(o3w tx9e47 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 /ho3 czridm.s6.b/:c zpe6zc5 u6vh eof a square, and a second point charge of -Q is placed at the upper-left corner. / 66 5eidzb6z.hv. /zreu3scpch mo :cIt 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); zyc/5ru:qb:m* qjpwb6tmzts su;+ :- Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on t:zs;u 6 upz-/wqct +t:bbrj qsmy5:m*he 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1. 3eku k/k/vx/2spt0n l0 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 5.0t3lku/ 2 ekpv0//kx sn nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an eq6y)f:am/dc ufs aj*)ytcd) u6 uilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the chas : yma/ ac)fjcy6tud))d 6*ufrges?

  Consider point charges of +Q and +4Q, which are separatedvi8;fck r ,du25 dea)5 uuhbw2 by 3.0 m. At what point, on a line between the two charges, would it be aerbkh2d8,)u5fw i2v ;cu 5udpossible 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 o6x10ngs) mnjr n the x-axi6sgr mx1n j)0ns 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. Whe* nfr(jvmg v :fy),egzu,h:v(re can a third positive charge +q bv)huzvg regf ny,:,(vjm: *f(e placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tnf.p1q+bzychg 525 lwd(6y 6nyhg1 i wotal 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 attract 0qfyga,)guvo2t 2:cqion of a fixed proton some distance abov): tyq0 q22fvogu ca,ge it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pointfoef. v t4govh8sbh9;f*n 5gd7eb 1r7 by nonconducting threads which are 30 cm long. Both arfo7h.f5b4;g s*oevh7vg9drf81nt b e e 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 q5qcl:y 1vi0dux*dz0a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m fromd0vy5dx1l zi: cuqq *0 the nucleus?

  What are the magnitude and direction of the electric field at wr 4t15g9rpyoi;d zc3 a distance of 1.50 m from a 50.r4 wd pzcot;y gr59i130-nC charge?

  A 5.0-C charge is 10 m from ai59 gg-q4js ou/pg.uea +jx ;w small test charge. What is the magnitude of the el54su;qe wg.g/+ug axpj oj i9-ectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test d 7ov;ctx) 1rncharge. What is the direction of the electric ; )coxv17 dtrnfield?

  A 5.0-C charge is 10 m rig, qdf87: zjfrom a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the tes rzj,7f dg8q:it charge?

  Two point charges each have a value of 3.0 Cy69xh )qqxc,+uzvm .x and are separated by a distance of 4.0 m. What is the electric field at a point midx.)q,mq9zy xvc+6xh uway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a me(uv9ijsrqg8wnn a yf362.4zyter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm jza(un2fy8sivg43.69 q n wry mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick andw5zx oxfqkj8.kf *;k 5 a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two chargesf5qkow*; 5x. zxfk jk8 is the electric field zero?

  Two point charges of +3.0pnw dqt8s b9xibyh2* u id4 m(:xr3(f- mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What i2d9b(r *i (bp ut3wmn8 fxxhdiys4 q:-s the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side hlt:gev1tyjrggmp hyln+5257 w :8 .j0.50 m. The last corner is occupiyjm1rhlg8h v .yjg2w5 :t g+l7pet5n :ed 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. kgiic 4) oh6yta:4 *fuCharges are placed at the 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 magnitude of the ely6ka* i:i44 tufc)h goectric 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 ff*2.5iea oggelectric field. i2go*5g ef.fa What is the magnitude of this electric field?

  A particle with a cha evljqj;76-uyrge 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 (ku3+ l +,ce0fdmln2:l fkagfmass 0.120 g is placed in an electric field of 6000 N/C pointing0f+ ke(3lg+dclmlun2ffk, : a downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 a;x-ru i, ,)i.q-gerqfqaa+t g carries a charge of -2.00 nC. The ball is placed inside a uniform electrictf,q- r x)uaa;qq.i,re+g i-a 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 mC. What is/ an9yvge;gzc ik6 vo7 hp,6.0tv pk4s the magnitude of the electric field 5.0 cm from the zsph4a6kc/0.yv ipvt,7k o6gn ;9gve sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whcqikb s/t6o/.at is the electric field 6.0 cm from the center of thk t//oi.6cqbse sphere?