State the law of conservation of electr)kmy22 k0 ria/)p neljic charge.

  Is it possible for two negatb2p, peq4n 5uytutiz8xr2* v) ive charges to attract each other?

  Is it possible for a positxnp 9/l(7lv4 b*ogo1 ;o3hhr11v*pvmty aot five and a negative charge to attract each other?

  A glass rod is rubbed with a piecmjit2d(gvq, mfm7) x(e of silk. During the process the glass rod acquires a positive chargef ) 2mxtm(d vmij(q7,g and the silk

  A proton carries a

  The model of the atomihs iv1r 2.*qp shows a

  A neutral atom always hasc . z-xzev ;an7;o5pin

  An atom has more electrons 3e p j ;;zkcpr deq3e.8n0ah/jthan protons. The atom is

  Materials in which the electrons ar5kw8b/fv5 axx e bound very tightly to the nuclei are referred to axaxw8/kb5 5fvs

  Materials in which the electrons are bound : kpkdi( gq dj*.okc(f+5st3acu )z( vrko1 5mvery loosely to the nuclei and can move about freely within ) o 5(*v5.t kpkd(k1(fkacm3gqcu + rzoj:dsithe material are referred to as

  A negatively charged rod ilezu,j+: i-;w tkm -zb//rmlf 2 /ynpys brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be ie m j-2t;lp/r/y, zbn:-y+lwm/zfku charged

  Sphere A carries a net positive charge, and sphere B is neutral. They;;r 4d 0;d84fctksdxbee cv+ i 6pk:qz are placed near each other on an insulated table. Sphere B is briefly t0d4k8fcrz bxtveqd:kps i64ed;c ;+;ouched with a wire that is grounded. Which statement is correct?

  How can a negatively char3ha3hgggj4( 1qoy * f- rv +wgad:5uzcged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positive, ; owqh.-p8 yjipizm)ly charged glass rod. The electroscoqiypz i.hmp) 8- ,;ojwpe

  An originally neutral electroy3bajjj, z 2p3coms98scope is grounded briefly while a positively charged glass rod is held near it. After tyo3aj jp jzc, 3b8s2m9he glass rod is removed, the electroscope

  A positive object touches a neutral elgb-f0 cu(mn/7 x rcfbt)8qph +ectroscope, and the leaves separate. Then a negative object is brought near the ele qhut+gfcbrf(npm x0)78 /c-bctroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral 2f8ul jegyrbaj nm +es6r537 0metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path followe8sf eu6yjrjae l+ mnr0 3b5g72d 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 consta5idi6hne/orl zy2 ;h0 nt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firx3n i5*kxg )dn-xrmx/st charge is larger ingxxxxi r5/3 )d-*mknn magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are p7 nr1ql;8 tlbdlaced near each other on a1 r qdltln87b;n insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each othju:ule 4k 1*u1,ch rimer with a certain force. If the charges on both objects are doubledhuu e,:1*jckilm u14r with no change in separation, the force between them

  Two charges are sepa4gky*us-lnblm z11 m/j lwric/0)*v v rated by a distance d and exert mutual attractive forces of F on each other. If the charges are sepa /0ml yjuclvimznw**g -4v/ 1r) s1lkbrated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happe5 -wttb)n h flo)sm.kqp:z-d- ns to the force between them if one t m) slb-q k:.fd )ohz-tp-5nwcharge 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 proton0 bddg3ngs+7y are separated by a distance of 1.0 m. What happens to thng g y7+bdd30se magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are jkbdvdi4fp ( /+l cc3-separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electd3lcdicb fp-v(+jk/ 4ron if a second electron is placed next to the proton?

  An electron and a proton arenxb+zodx++ g9:g gu p; separated by a distance of 1.0 m. What happens to the size of t:9do + n++xbpz;uxggg he 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 squa h3f(1rgdpmwper76e kq - k02ore. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electros -20kmpwe ( fep17gord6qrh k3tatic 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 is placed at the centroid of 4 s; jvfroqpep;c;/9man 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 t mv9; c4q/f;ojepspr;he 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 vecroos(zq z3 s(8tor?

  At twice the distance from au-g bo,h48*l mnki1 gaf:ykr( point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a ne;wyr35y7:up ca:/tv jdvlg1ibg8c z(gative and positive charge alon:7cradgyj;3vwi1bu:(/ gp5c y8zt lvg the line joining the two charges?

  Is it possible to have a zero electric field value between t0 ,t1 otazzjo9wo positive charges along the line joi,z9 01azjoto tning the two charges?

  Electric field lines neah((+4a10hv dgnyebc.upr + ks r psitive point charges

  The electric field showloyz8iknpqln;02ygd 7+: :kk n

  Can electric field lin h*w 08em nf)slh/ bm.ihl f7v.+yt;xaes intersect in free space?

  A solid block of metal in electrt tn* ,;frx8 dpu w.mwmpby,9;ostatic equilibrium is placed in a uniform electric field. Give a statement cod9r pu;p f,bwtw*n x.tm8,ym;ncerning the electric field in the block's interior.

  If a solid metal sphere and a hollow mee6/ n .row;ooz6pqn5(t n e.jc)rbu;oj 8z6mttal sphere of equal diameters are each given the same cer. ( 5.j6;6enctzo tonb/6u;wj qmnr 8po)ozharge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table inlo/ 4x+-tzohc vt.w4n a region where a uniform electric field ishw4otz x/ +t. l4cv-no directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is ina q+ yfvzw9,/k 1yg10i ruo7wu)kze1m electrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hob7:4dj4;* jr nynhncd:h igh2 llow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has2nd4bjh:g: i4chn ndr7; hy* j

State three properties of 0e269i qkgyx 5l7: z9 dbuemny50obqvconductors in static equilibrium.

State Gauss's law.

  The charge carried bypgg/ *d l/q cg)*0vwjx 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 net chaei n*uwoj) h4p38gxq4rge of +2.00 mC. How many more protons than electr )jq4 weux* o8n43iphgons does this piece of plastic have?

  What is the charge on 1 kg of pd (xa+q e6hfw9rotons?

  An atomic nucleus has a dey ll x2,6 4a;uq3znbcharge 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.dol7neu-(),1 x*wx 1zlittgm z 3p rn00 and -4.0 mC, respectivelwzin-mu,*gl)x1ro7 pl1t e(0tnxz 3dy. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and thelpr(3q vh/u 2d force between them is 1.0 N. What is the magnit2(hdl/3qrv upude of the second charge?

  Two 1.0-C charges have a*4q 1cqgryjo *t(3 deax r8jkqhnic,*u 5ii95 force between them of 1.0 N. How far apart are they?

  The force between a - zmz2(2 uzcjvvwu7dtm-3 p5s$30 \; mC$ 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 1.02h/ ra 0gqid 93pmw4qh-N force. If they are moved to a new separation d4pra iwh/h0mq2q3g9of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC areph vc+25bi2tp placed on the x-axis. The first charge is at the origin, the second to the righ +vcb pit2hp52t 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 placed on the x-axis. A g:3x9:0g mh gq*gald2ofepg l on+z 7.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. gm70gogl2g:zqx *o 9 :ld.nafe +3pghWhat 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 = 2.03k-+n gejwh;h0 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitu3h;ghe-n+w jk de of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of q3a rjh z3f10wt)t (nca 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 placed at the lower-left cornazq rwh)0fct31(jn3t er?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC rpt1 t0bcc* yhyj;.l:is at (0, pthy tyj:c0rb ;*cl1.0). What 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 nC is at (0, 0.10 m); Q3 = a/u-lqac*ey : :tu5mu 4xy 0alo+ng5d5.0 nC is at (0, 0). What is the di*+ym 4oyl5t-xauuc na5 ugdel : q/0a:rection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed v)j- ++ pigortxbxr7sw6a9v8at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any onr)+iprxjb7vao s6tx 8+gw 9v-e of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what poi1fko ihusbh84 ak3+d- nt, on a line between the two charges, would it be possible to place a fb-uk3ai8 kh+1dos4h 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 +9q4;jh. cvmi g n8p3r144 flpbd.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force onp.4 4hvjf3g18rdmnq;cib4 l p it is zero?

  Charge +2q is placed at the origin and chd0o2 ,8xi onpzarge -q is placed at x = 2a. Where can a ox2 ino0dp8,zthird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of r)w /t nmng0z6mkxa90 yg99fg 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 gravity by gzo;,p,j*jjrc q y k)7the attraction of a fixed proton some distance above it. How far above t)g o jy7, zj,kqpj*r;che electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduci gxkmaz*-j 6*,9oop hting threads which are 30 cm long. Both are given identicalk o,zmi6jgx h o*9*p-a 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 cha.wrha lv lh.74l2rlxua/87k hrge of +40e. What is the magnitude of the electric field at a distance of 1.0 h7wal/2lk.lav7r uh8r.hx 4lm from the nucleus?

  What are the magnitude and dire a(keua7fj9;td f 4gt9ction of the electric field at a distance of 1.50 m from gtdt4 f9 uf; ae(aj7k9a 50.0-nC charge?

  A 5.0-C charge is 10 m from 1 q4 kg;ch ybsmo1u5xv vos;* eg02d*la small test charge. What is the magnitude of the electric field at the location of the x1*s sb51vymue ;c;ghg *ok v 4l0d2qotest charge?

  A 5.0-C charge is 10 m from a small test ch6 ssifcr7 ;o3:n p:hjrvc h))barge. What is the direction of the electric fiv sh6cr3)csjo:pb)h in ;7:rf eld?

  A 5.0-C charge is 10 m from a small test charge. W + 3ge )tp7s)l:dziawehat is the magnitude of the force extz7g 3e e)sp+d :ilaw)perienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distan4z;js0 dto:1wa qv e,kce of 4.0 m. What is the electric field at a 0;dv:swzqakoj 1e, 4 tpoint midway between the two charges?

  A 5.0-mC charge is placey fmsarw35 l.6d at the 0 cm mark of a meter stick and a -4.0 mC charge is pla .5 6rlfsa3mwyced 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 mark of a meter stick and a -4.0 mC chao -j, 2ama(qfeui: x6 4dj3w05ekc xvgrge is placed at the 50 cm mark. At what point on3qwd ge4-i5 f koxu(a6xv c:m0j2jae, a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placff-pqusmu( a kr*j:7+vz76ioed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between thvj7 +s a6m:-7ffuiqrkzo pu*(em?

  Three 3.0 mC charges are at the three corncogd rdv794759x u skeers of a square of side 0.50 m. The last corner is occupied by a -3.0 mC ch9vr9sx5ude4co77dk g arge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Chaccx(l cz km9,,rges 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 (0k(m9xc l, zc,c, 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 v7cp.6kn1gon c 1o w2iit is placed in a uniform electric field. What is 71g nnk2 ocopc.w16vithe magnitude of this electric field?

  A particle with a ch(vf9v o,vq xfjo optxi u 4q9f83d3j1*arge 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 electric field of 6000 N/C pqzqb rwgwd )*x75bh+ d56 0b*cp wvcs6ointing downward. What charge 5hgw6+dpzws6 b b*)q b0 xcr57cdv*qwmust be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Thty :cby.v2 rq72sn 0 kgtwb)0se ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnb c2 .ss)rk00 v7wyntgy2tq:bitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is t0 xtmn-q:hkk 00- dmxlhe magnitude of the electric fk0x hkq0-m-: xt0nl dmield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge itc.ixao52i9k d) f o)of 3.0 mC. What is the electric field 6.0 cm from the center of the sphereiia)9 fo)i5ct .xdok 2?