State the law of conservation of electricz)jffp.kz7) wuku4 +c charge.

  Is it possible for two negative t3yd3q9mq e:lcharges to attract each other?

  Is it possible for a positive andpe*sn).a+bvewqab:;d u x 0x:ur n1k( a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk.8j;nylv 3eleu qnbyyl*;; b; 0 During the process the glass rod acquires u;b0;e;lyjvn 8 3bel*l y;ynqa positive charge and the silk

  A proton carries a

  The model of the atomc 3h+gm1hse3f 3d;cwuew gb*+lvg+ n6 shows a

  A neutral atom always hasdem)w c +j87(bg h.tslz(/tpt

  An atom has more electrons than protons. The at8 6zx p8vg3cdjom is

  Materials in which the electrons are bound very tigh7;s:wtmf xvc7 tly to the nuclei are referred to :t7 x7;cfms wvas

  Materials in which the electron/ 2w dz5.hkjwm*z (cxvs are bound very loosely to the nuclei and can move about freely within the material are referred td5c/ z .zwh*vmjx(w k2o as

  A negatively charged rod is brought near :w-y4hvi x -c)wkgn(b qldonql.- g*1 one end of an uncharged metal bar. The end of the metal bar farthest from the ch-wbl1k)n* g.i gonl- v4w:-hxcqd (yq arged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. f e)/cnbw/2xgp;tqa 2 They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which s2xp/ ag;eqn cbwt2/)ftatement is correct?

  How can a negatively charged rted4hgp0, ob8;/iq)nzf ;+fff5 ja t ood charge an electroscope positively?

  An originally neutral electroscope is bro(cevpdv:.turc9 - y6 c :wt6fiefly touched with a positively charged glass rod. The electro cpeyo6-r dtu(cf.vcv:: 6t9wscope

  An originally neutral elec- (u1pl+v*qv yqaoy1 -6itdn ttroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is r- t61p+dy*vniuqoat 1( ly v-qemoved, the electroscope

  A positive object touches a neutral electroscope, and tho hedj3oenr0ayx7) 9 l5m )pb9e leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happen)e7 hp5)j0ondoxl9yar9 me 3bs to the leaves?

  A large negatively charged object is placed on an insulated tablempp 7 9asy+x9)k kv2t+mkg6wk. 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. 9) k+ kpp+k amvkm 2txy6gsw97What is the final charge on each ball?

  Charge is

  What are the units of the Cokr)1xr o7rmb ,ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects ar,a ,:ac 7ccycby3r:dge separated by a distance d. The first charge is larger in magnitude than the second chargbdc c c:3a: ,yr,ac7gye.

  Sphere A carries a net charge and sphere B is neutral. They are placed neadehp2; 6cn;o2bfn lh+ r each other on an insulated table. Which statement best describes the elect2;p;flohh2 +n nbedc6rostatic force between them?

  Two charged objects attract each obou prc ejj7t -;8*v2)paa6izther with a certain force. If the charges on both objects are doubled with no change in separation, thr-2 pev* ;jo)8bzuc6jti7a pae force between them

  Two charges are separated by a distance d and e9e1e/ j8q 3qob.kny. p m7du31l (pgttxwmx-rxert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what arxj/1 eq(bkq9 8m3rpp1.7wtd 3 y-tgex ol.mnue the new mutual forces?

  Two charged objects attract each other wiwh8p. y4 bbp7nth a force F. What happens to 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 p.4 h7ypwb8b noriginal value? The force is now equal to

  An electron and a proton are separated by a distance ofqal; *n*wwql+q e0inlr0 1e dw1q 4:na 1.0 m. What happens to the magndq ql4wi1na+r ;nl1n0 *q wlawe0:qe*itude of 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 1.0 m. sf6mpj3ev-5l6s+ /kgqm c6ia What happens to the magnitude of the force on the first electron if a second electron is placed next to the+ecg -s6 3mi5mp sqv/ aklj6f6 proton?

  An electron and a proton are separated by a distance of 1.0 me gswp2q59)a q. What happens to the sizeaqwg9p2es q5) of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is x*lflq x1k04j placed 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, id1x lqflkj4*0 xentical 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 atc:cfqx- i sk3) the centroid of an equilateral triangle. When a second charge of + qif:c3-xcs) kQ 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 following is not a vecto7f+x n 3rlnf+nr?

  At twice the distance from a point 7 gjz.qs-9 xp,mxr/dmjdc3*-)vpkn o charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative 0 g/p 7vaohm(lr+ail( and positive charge along the line joining the two ( l/(harm 7og0+lpavicharges?

  Is it possible to have a zero electric field value betweeyiz7 sn-i; :k30k0jffql om l2n two positive charges alonsq fy2;:fkj7mi0lli- 0ozn 3kg the line joining the two charges?

  Electric field lines nu ; h547,b kpkgopu5zmear psitive point charges

  The electric field sho xd.0waxur 3;2y+ungw wn

  Can electric field lines intersect in free spa)4cj.*3(elg iqxe e9 w9snf jnce?

  A solid block of metal in electrost foah 9kqb;n6x 0/6dkgatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in tabd; /k 0khx96fonq6ghe block's interior.

  If a solid metal sphere and a hollow metal sphere osqy5 ;5r (xr k2cam,uof equal diameters are each given the same charge, the electric field (E) midway betrmso 5r(y,u5;ka2qc x ween the center and the surface is

  A cubic block of aluminum res0zjma:-g /pn lts on a wooden table in a region where a uniform el/0:pla -g jnmzectric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium(8x; (jkiu nbx1mi2ic.yxws5 near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that i*i:kt5k,1h,tihq pl us grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow spherei h,h*,u:qt 15ktilpk has

State three properties of conductor.epg mndu8x (e.8n9ve s in static equilibrium.

State Gauss's law.

  The charge carried by one electron adb4t+3v)8wo dwe o71w u g2acis $e = -1.6 \times 10^{-19} \; C$. 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 tha-;y-g,etykjm d5)i6lg no;a7n)jx dcn electrons does this piece k- 6j5cgytilgn, )7d )-m; odyjax;ne of plastic have?

  What is the charge on 1 kg of protons?ys *zrdg37au6

  An atomic nucleus has a cha8wgt2 .e8r,+azwqo zb 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 cm, have charge values dxj 8n7b f;7y2vm4 nvv6v; ylsof 2.0 and -4.0 mC, respectiv v7yxy;nnls m4 ;fd76v82jvvbely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1(ufk01cmp ,lxx zze :0 j2+if/es/eb p.0 N. What is the magnitude sxpjm+x0elek eff0u(:/ i2 z1bpc/ z,of the second charge?

  Two 1.0-C charges have a force between them of l 7pcrm0njgq + c.u8n8vj)er(1.0 N. How far apart are they?

  The force between a ex6c. k j4tfw.z -k:if$30 \; mC$ 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 they g* 5t91cnor ct 4f kjfxdix:4 d/w*es1aretctixxg * ocj 9d5*krde n1fw:44sf/1 moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are plac p24na4pzpx4red 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 4a 2ppznpxr44the 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 m0m 9 jx1 hp20(u+-xluu3mgsuo e+cvkue(n ye-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 mare+e(l jxux2 0g90-u( +1yuuepohksmc m3v-nuk. 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 f5znilkl;4j0z ollowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at 4k0n j zi;zl5lx = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at tu1r)ohws b ;; .4nuud9xq l2/l)fs hkthe 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 magnitude of the force that acts on the center charge if a third charge of -Q is placedu9l h/1ts urbf l.)huq);dwsk2nx; 4o at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is atp,vfq han3o o8 --y5zc (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What nzv 5o- c-apoy,83hfq is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nCl-y 1l-ue5 uvp3v/ aqv sj/ot; is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the-p1vlvoqas/l-; ve j y3tuu/5 direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an o8q -ph6q phc83ibt.xequilateral triangle which measureh-xc38 qpq8b6ohtp.i s 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 and +4Q, which arxx/ wx7) iq3imvl25z8 lg.yp ae separated by 3.0 m. At what poi zl8xilq3 ax/p2w75x.g) mviynt, 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 be zero?

  A +3.0-C charge is at t c p mn*tdl1v,o.h l9ux:th7i:he origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zeudlv*chpm:o7h1 x9.:,tntil ro?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where 0yj9 gybrti-bo :9tv, can a tryvj9t -tyib9,:o0bg hird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tota*cujup1/ fa7e l 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 gravb /-s(a )nijohity by the attraction of a fixed proa hijn/(- )sboton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductin 75:h1zzo( pw5z skscrg threads which are 30 cm long. Both are given identical charges, and the electrostatic repuhozsp wk751: 5sz( czrlsion 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 charge of +40e. What is the magnituy,zd .3nduew p;efz9 7de of the electric field at a died79uzfnz3 yw pde., ;stance of 1.0 m from the nucleus?

  What are the magnitude and direction of the el( lilsj *xcke m;zl 7b.: br+xb/yh)9lectric field at a distance of 1.50 mrce(xbl.ijz*m 7ybs:l/kl lxb+9)h ; from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is3mbe)t -v cp4c the magnitude of the electric field at them4tvcb)ce- p3 location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Wh w h wovmx99kd48ct*3eat is the direction of the electricv9we48ox t9k3 mwc* hd field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of t 1p pw4lt)p(. , l sh:vf)6o9uzoammoahe force experienced)tv) 9am:.o(lpp1fpozm auw4oh,l s 6 by a 1.0 nC charge placed at the location of the test charge?

  Two point charges eacmtv vjb8/jjkbhd:3 s 0wup./ut3 q;u4 h have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between t3jvu t0 p tb.s j8w/;jkb4qvu3d: uhm/he two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a jl g d2e5v, di2vl5(i2k ffn.t-4.0 mC chargei ein 2, tvdj5(5fl. glv2dk2f is placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm m-// szbuz bq0 1xf6aawark of a meter stick and a -4.0 mC charge is placed at th z a-/z/ab qu0wf6xb1se 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed-tnggcq0) q )p at x = 0 and x = 0.20 m. Wh0n gq)tg) -cqpat is 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 g6nto-:w9)t/swvfq 0mcjk( z of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at wsfgv jtck6(qonmw / t9:)z0-the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the cornerm4 hx b,* asa90s*pbr-vnf m.ys 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 ams,sn.0b -mphxbvr4a a* 9y*ft (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*h diluql c+::ae* i2c in a uniform electric field. What is the magnitude of this elel2q +uc**:liide hac:ctric field?

  A particle with a charge of 4.0 mC has a masm4 .hzx4n5 atos 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 i ri61p2u5iu fg is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it tor6iiu12p u if5 be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed in,s;v1yhi ;mv1 *4 c5 2hu5nir-mprsm rr a:gwyside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and directyvm-n1isiav :rhu p51 ws5hr; *ry mm;cg4r2,ion of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What v((tbv4: y siqis the magnitude of the electric field 5.0 cm from the sphere's surfa :b( (vqv4sytice?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the el.r lf* slmc4yg3 0)jwiiqbed -8z.yp0ectric field 6.0 cm from the center s 84) bfiql-ywr*c30 ge0j.dpz yilm. of the sphere?