State the law of conservation of electric c(yfd yaz2 7xzq :n4f(xharge.

  Is it possible for two negative charges to attract each k3zeq1fyih np, jhcb( (t-viq9),v 2fother?

  Is it possible for a positive and a negats ,ijj9du, t9give charge to attract each other?

  A glass rod is rubbed wij93t64aj qjdh th a piece of silk. During the process the glass rod acquitqjj9 63jh4a dres a positive charge and the silk

  A proton carries a

  The model of the atom shows a2l/pze;w 8j zk

  A neutral atom always hc 84o) ) nt1hv 7ph(g5oowfv9uu jr2yxas

  An atom has more electrons than protons. The atomo3+pdsf o4ql/ is

  Materials in which the electrons are bound very tightly to the9apbyhghc z 3cy iv2(//+h3l5.zoncu nuclei are referrednc9vzi/b+l2 hyhp agz( oh5y3/ .cu3c to as

  Materials in which the electrons are bound veryrc (p p rrr/od33w6pn:x:zm9n loosely to the nuclei and can move about freely within the material are referred o r: 6 ncrzprp9mw/ rxd3p:(3nto as

  A negatively charged rod is brought near osb4sz 9faa c99,cejf1 ne end of an uncharged metal bar. The end of the metal bar farthest from the charged rods 1fbscze j9c4a9,9 fa will be charged

  Sphere A carries a net posihdc.-/d) 7..b+ yavall 9ot +lm vhqgetive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. leq-h7 la.+dcd)m .v /a+b lgy.hvto9Which statement is correct?

  How can a negatively charged rod charge an electroscope posdk onftak )/-k e48-yv )ra+hl;xbma 7itively?

  An originally neutral electr -ud5,m euia+zme)( sboscope is briefly touched with a positively charged glass rod.imu ,u-e5z+ e)s bd(am The electroscope

  An originally neutral electroscope is grounded briefly while a positively chargi,h/dcazw-o/3od y,fj8 , nvked glass rod is held near it. After the glass rod is rcaodv ,,wdo3ih nz,//-8ykj femoved, the electroscope

  A positive object touches a neutral electroscope, and thonz+- z: rlz8dx /cg3mu5hd5fdt9j o5e leaves separate. Then a negative object is brought near the elenh-/t3dz 5do9d+m :jguz5 5rlf zcx8octroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutrqq v8*-x5ezn hal 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 to 5vhn qz-*8qexuch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulo63dkr1 0c(uahxew du8mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dis. m0o-inx m+6ojlkv fl26p-q so9qo6ztance d. The first charge is larger in0om6j -qfo i v6sqzpko- +ox ln96.m2l magnitude than the second charge.

  Sphere A carries a net charge and spherek.w4cga y/0n:-fxv ag B is neutral. They are placed near each other on an insulated table. .vkc ag-/fyx :wg0a n4 Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charg8fvpu9 t+(ofvyv - e1jes on both objects are doubled with no change in separation, the force betweee81jf9uyf+v -v tov(p n them

  Two charges are separated by a distance d and exert mutual attractive72gpyw- i l+ c9raadv2 forces of F on each other. If the charges are separated by a distance of d/3, wh ldaw+i-y 2vrp297 acgat are the new mutual forces?

  Two charged objects attranu*wzn -f b yf/i,*,imct each other with a force F. What happens to the force between them if one chaiw-ny,ffnb /u , im*z*rge 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 xib4vt6d ..rl di6zl-separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the fid6bdx. . lil vz46it-rrst electron?

  An electron and a proton are separated by a distance of 1.0 m. Whhkq9swlfw fj;1)yr ),3v (gdhat happens to the magnitude of the force on the first eledvf;js) hgy3,krf) (9lhqww1 ctron if a second electron is placed next to the proton?

  An electron and a proton are separt7u ppcew5f d8(; /evuated by a distance of 1.0 m. What happens to the size of the force on the proton if tueutpd v(5e f;8w7cp /he electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second poie*:)6 jk;cv* czj fhoym r/+daa/zyo-nt 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 charghj)ad : /+ o*cevc6*j -mk fyoarz/yz;es 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 an equilat0,, 2 kndooca 9coce*meral 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. cm0 ne ok*,o,2a9c odcWhat 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 bod3/4+ crz.j;e l+ia ;jdoemnot a vector?

  At twice the distance from a point charge, the strength of paowf 3pcr)rra m25 .fn2 .9wnte;ai+tba c-:the electric field

  Is it possible to have a zero electrigshifje*,-00yur:wp fj3 h9 uc field value between a negative and positive charge along the line joining theysre 0i u3,jp0:-wfgfjh*u9h two charges?

  Is it possible to have a zero electric field valjce 7yt:y oup )m3ll(3ue between two positive charges along the line joining the two chargey:jm7 op uclyl)(3 t3es?

  Electric field lines near psitive point cha ,zeh mou11/a/g(pf vtrges

  The electric field shownj,qdd/ s uk/ xue806ap9ao4et:r u2xg

  Can electric field lines intersect in free sp *to5 vha32gox;6 dajtace?

  A solid block of metal in electrostatic equilibrium is placed in v42sfk+1 k8m undzca;a uniform electric field. Give a statement concerning the electric s+kvaf2; 4uc z8mk1dnfield in the block's interior.

  If a solid metal sphere and a hollow me,vh 7tduvamntzrhhif9a4s- j8 (z+9*tal sphere of equal diameters are each given the same charge, the electric field (E) midway between the centeanizjm4a(fu9 7t t +-ds *hr9v,z8hvhr and the surface is

  A cubic block of aluminum rests on a wooden tabled,-yxn*zj;6v9ic xj j in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the blz jjxd*i;ycn9-x, 6vjock's top surface?

  If a conductor is in electrostatic equilibrium ve4i0 y)x6jm rjjj9l:near an electric charge

  A positive point charge is enclosed in a hcn*2 odw o /a8vq/gcz:ollow metallic sphere that is grounded. As compared to the case without the hollow sphere*dvcgwca 2nooq: 8//z, the electric field at a point directly above the hollow sphere has

State three properties of con:1fc9s,khx pxylg6 m96 vh3 uxductors in static equilibrium.

State Gauss's law.

  The charge carried by ow:npx xon5n0 /ne 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 charge of +2.00 mC. How ag criar4 0h8*q-xo3v many more protons than electrons does this piece o c*iqav4r 3h -8xga0orf plastic have?

  What is the charge on 1 kg of protons?)c++xc;/7vwi kue 2vml2c dfhh+ p:dv

  An atomic nucleus has 3c bmx5n; y6 z44qlakaa charge 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, h3 ln- 9ldqlwln (r 1pgwpn2j0xtn i)jz:q/g;/ave charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between themn() t/jxg ij2d/9zrg0 wqw3ln pn:q-l1ln;pl?

  A 1.0-C charge is 15 m from a second charge, and an2ap 6-8 icznthe force between them is 1.0 N. What is the magnitude of the secn -pa n2c6za8iond charge?

  Two 1.0-C charges have a force between them hm3a:vghmu s-b30 wf6eg-p 3 kof 1.0 N. How far apart are they?

  The force between a b;cwvd+u rh-r ( w.xt3$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exgx uq8.u:wnzh+2apzrng g)p- 6g)nv . perience a 1.0-N force. If they are moved to a new separation oz-h qg 2 r 8ggvg6napnpu..wun)z+)x:f 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are p+vwc:hqh b-iq k8g)5p laced on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is wq:hcv k+b5pg)-ih8 qat 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 4fy,0g,( / (i vsefg 728ysxzcere akion 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 the magnitude and direc( /xrzs4 (c82e,ivie0fsygyge fk7 ,ation of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the folahav o*4:guxyr-w f mn 7cx705j(py+ flowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 70c(f -ywguhfx a5:vjma +r*7xpyno 4mC 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 a square,6fc u4:*d s:u9sa4fjjrvwht 0 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 lod4hj9vfutj:c*:a s6su0wr f4 wer-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 is ay);v stc xyeu7:/7f+ vf gpg* zyqr-0wt (0, 0). What is the magnitude of the net force on the 5.0 nC chg-ucsf ; 7)t:ew0vz /+ rv*yygf xp7qyarge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.1jk 7 mkssidmlr-)3z110 m); Q3 = 5.0 nC is at (0, 0). What is the direction of thr )idz1-s3skmk 7jm1le net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verlkv- h+-bp xded5ca2)ur8 wg5tices of an equilateral triangle which measures 30 cm on a side. What is therc-g5edalx wb8hupk+ v-)5d 2 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 8.6ama zxug/:ohqovxk)ry3 kyi9v51wo(v 1c.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 electrostatoum.ryg( 3ac9 oqzxv 1v xiv/5)a8hoy :wkk16ic force acting on it would be zero?

  A +3.0-C charge is at the dk9q52j blh( korigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a thkbd5l kq29j(h ird charge be placed so the net force on it is zero?

  Charge +2q is placed at 5qt(l+7m 9*k pyjjp6 gk-mikothe origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it i9*(yg klmmp-5k6opk + jj7qti s zero?

  A copper penny has a mo. -(e wzkb;7sf4i,q vo 5ic,lac lj7wass of 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 gzt8 e11 sbn-qhravity by the attraction of a fixed proton some distance above it. How far above the electron is the proto -qz81nhtb es1n?

  Two 0.20-g metal spheres are hung from a common point by ra xq j wvs: :mkr:cwd;8o s+/i:qv3m,nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the twr m+sqa s i,r/;8k3wxc:doq:j mv::vhreads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a cqqxinr y ,1- wmpkj s6eu0wy4(/*f ;vsharge of +40e. What is the magnitude of the electric field at r y/q, sy sux w14k*pmw-e(0f6vqinj;a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fir-9qpfd(bd0 ;g;9*unezq hvh)vk 2 tceld at a distance of 1.50 m from a 50.0-nC nvtgh9;fb-*q v) kud(9r2dp; hqc0 ze charge?

  A 5.0-C charge is 10 m from a small test charge.6n(b6 qxvrr0x What is the magnitude of the electric fibqv(xr n0 r6x6eld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directionh j* 3,duvk.ui of the electrick.uv3i*d ,hju field?

  A 5.0-C charge is 10 m from a small test charge. W6n bkx7ack lyaf*z7rs 66p3 y3hat is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test cp xsr3y76 *n6z6a7klyf3k bacharge?

  Two point charges each have a value of 3.0 C s k6jbu:, by:jand are separated by a distance of 4.0 m. What is the electric field at a point midway between the two char s,b6jkj:uy: bges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC:kdzq5oyanx /6f3 ) dx charge is placnfoqxyd)x 3/d6z:5ak ed 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./(+hbouf+g e8uphmf of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?b8uf+hmp u /f+heog (.

  Two point charges of +3.0 mC and -7.0 mC aqf e9ndfa7v1n 9kbr 6 be4x2x.re placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midx v7k16n9 f.a9bne bqred2x f4way between them?

  Three 3.0 mC charges are at the three corners of a square*o+w *z tckeyegph)26 kej n0) of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of keo+gc*yt n2 6)hk)pe0wze*j the square.

  Consider a square which is 1.0 m on a side. Charoe)d7c s /4hybges are placed at the corners of the square as )chs 7/4eydbo 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 char;uupo:( cwe y0jgp.k9ge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fw g kpje.;c9(u :uyop0ield?

  A particle with a charge of 4.0 mC n.tk,h9 r is+49n ritzhas 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 placew p kzh;/jf.m0- w*2ecssgst3d in an electric field of 6000 N/C pointing downward. What charge must be placed on20./w cw k*sg3phss-jfzt e m; the ball for it to be suspended?

  A foam ball of mass 0.150 g carri g+(wi/ a6w:x ,lgb;szvnxix3 es a charge of -2.00 nC. The ball is placed inside a uniform elecxx,avggzw( sn+i ;3w/lxb6:i tric 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 cpl)3seugk, 0 +2.0 mC. What is the magnitude of the electricg 0sp ,leku)c3 field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chaez:hs :tt,:f z4o4kqx4 txz o2rge of 3.0 mC. What is the electric f4 :f::4osox2k ,hzx4zt zttqeield 6.0 cm from the center of the sphere?