State the law of conservation of electric chal e1b4ra 97cexa(nj+b rge.

  Is it possible for two new)x to73,j lbx ei.+ kebw8sq-gative charges to attract each other?

  Is it possible for a positive ani 3q( 4g,carzv;i(i jwd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durw( hpzg)/5 l2 nw (g:cfvnu0tuing the process the glass rod acquires a2(g c5ptw(uu:)vwh0nz ng/ fl positive charge and the silk

  A proton carries a

  The model of the atom show4a/w-hiasc rw nc1b)-s a

  A neutral atom always has2nyl4-6uc2 d*gu )w8t8kck5 qpps y jy

  An atom has more electrons than z/9sn.j u ja6b.jq9xiprotons. The atom is

  Materials in which the electrons are bound very tightly to tg)izre(rf0 d )he nuclei are referred to a r(rdzegif)0)s

  Materials in which the electrons are bound very loosely t- jklp+(- llnvmqudj/ rqmk7:z;1vj 9o the nuclei and can move about freely within the mater jlu jl+d ;(v/kqplj:zqrm--9m71nvkial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal barj/ zl hsro;+-zm08hwt . The end of the sr lm h8+t/;jwzzh-o0metal bar farthest from the charged rod will be charged

  Sphere A carries a net p k g5tl9n6egry6.q m75hjjfh z/3c;jfositive charge, and sphere B is neutral. They are placed near each other on an insul er m6h3z hjgjjf;76cy 5gq/f59lt.knated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rodzg-( +bqa5 7vzrkq4p9a p:t ml charge an electroscope positively?

  An originally neutral electroscope is briefly touched *qw s-hib7d5p.4 ljbol3*ll h with a positively charged glasslw* spdi.bo3j*h bl-7 45lqhl rod. The electroscope

  An originally neutral electroscoph, k f+qer (n)uy*v*ull /if.j/ev-vae is grounded briefly while a positively charged glasr ()kef/*q-evu,n vv.lj ayhl/ *+ fius rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Tq mx.uf* m +zo egx-f),j9. im82vycefhen a neg8)o*fym-.f 9emmjf2 .+ z,x qcxguievative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insuyc.u 4zu3 1vxmv9uiu *lated table. 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 tu 4uyu*3v1c9xz vmi u.he 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 Coulomb26 diudvbco yo1 fe,55 constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a .;h0d iu7ffq2en rlow( av14kdistance d. The first charge is larger in magnitude than thq27faluhk4io vd.r; en0w1 ( fe second charge.

  Sphere A carries a net charge wfmb;gb .3d*39k;p1ogq y scz and sphere B is neutral. They are placed near each other on an insulat;sz.bb93fp3y gkq w o1gc ;m*ded table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If 13t) s d ;qoybo2;x)cqxue -azthe charges on both bx 1 2yq3soezx;tda;))- oucqobjects are doubled with no change in separation, the force between them

  Two charges are separ) cjab0wa,p2k ated by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are tjbc kwa p02)a,he new mutual forces?

  Two charged objects attract eac 5qmnkri wfgzvq4(2y.fj u)36h other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the sepa)mfw(y3 nvkquj.f6ig4q2 r5z ration 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 disa 9 ap6.1f.y as/wfybptance of 1.0 m. What happens to the magnitude of the force on the p9fyfwa1p a6 y bp/s.a.roton if a second electron is placed next to the first electron?

  An electron and a proton aree77 e/wj+ii n3c1 tooi separated by a distance of 1.0 m. What happens to the magnitude of the force on the first n+7j/e etii1w7o3ic o electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What hamf q,i4w yll)2ppens to the size of the force on the proton if the electron is moved 0.50 m closer to the protol,if)y q ml2w4n?

  A point charge of +Q is placed at the cen5-n w+2z6(;xh zo. qp:5mdlyahuwx mlter of a square. When a second point charge of -Q is placed at one of the squar5wxozhpa:m.62 wy+5z lh lxmq-ud; n( e'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 is placed at the centroid of an3b ad3)8s5qszwfhh bvz:u ) 5m 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 + bw5bz f)h3u:svmsd 3qh58a) zQ placed at one of the other vertices?

  Which of the following ispqnz, 74r5( je qs/wu8akhrh ) not a vector?

  At twice the distance from a point charge, the strb*ca 30 f4k nudbf,+(lpt+rm:ks mgv3ength of the electric field

  Is it possible to have a zero electric field val2+pz bwz,v9e 66yd zmbue between a negative and positive chmwz9z +d2z ypv bbe6,6arge along the line joining the two charges?

  Is it possible to have a znl(el0c0snh765 p3m 20f oofmd 7of7i: eeahz ero electric field value between two positive charges alfo7lz 3dp07f (fo cam5ilo7 s: 0eehe06m2nnhong the line joining the two charges?

  Electric field lines near psitive point icm. vt22 y 60vt+wroicharges

  The electric field sqf:z1;n+p 1 brgs+ ( ls1qk85b tmmvgbhown

  Can electric field lines iaxyw bm*2g t1 e*of7m;ntersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elec y uoc.mlx:.rm7qf7d0 tric field. Give a statement concxcy 0 m.urf: q7ol.m7derning the electric field in the block's interior.

  If a solid metal spherjdkm .pofdbub7, i) 729w nd10x8qzmr e and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and thep8102 doz7mu x.fmqn dwk7irbb)9dj , surface is

  A cubic block of aluminum;d;-n rwgb ;yw rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfaceb;wrd wgy -;;n?

  If a conductor is in electrostatic equilibrium 8 0brf1cceghkac u7xfo l:+53 near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere tha* a9e.g lp,2o qr:rmjwt is grounded. As compared to the case without the hollo pe .qrg*:2lo9aj mwr,w sphere, the electric field at a point directly above the hollow sphere has

State three properties oc p+7 )+-o7q lkxcdagwf conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron i wgzn p7gn3 km;0ytrw,8hn6d*)c fa f1s $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge ot gm(7 o7/pqavf +2.00 mC. How many more protons than electrons does ( 7v7 o/apmgtqthis piece of plastic have?

  What is the charge on 1 kg of proaa6d1 r mu4b2rtons?

  An atomic nucleus ha uu;lu3v l0+xcs a 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, have charge values of 2.0,34 yi5t m1m w-ewxqaix1yo,c and -4.0 mC, respectively. What is t 1- eyy1,co,mm q4aw i5twx3ixhe magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between th gqm3c ;z.0behem is 1.0 N. What is the magnitude of the second0bhz;qg m3ce. charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart /5q0so7v rfwucboc;) are they?

  The force between a *g*lom;w/n g p(vand4$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, /8v*o;ukek.sobcsy7 experience a 1.0-N force. If they are moved to a new sepv 8oc.ss; *y7kbkeu/o aration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are plac0tu 8kn2chc( eix;.fied 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 the magnitude and direction of the electrostatic forchc8x ;(t 2.efi0cnui ke which acts on the charge at the origin?

  Three point charges are placed on the x-aisr.7erb/ 7u2 zfhvh . pva.j1xis. 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 direction of the electrostatic force which acts on the cha7e ..rihpaz2/fvv j71 . ubrhsrge at the origin?

  Three point charges are located at the following positions: Q1 = 2.rdg8 7;kh)c x7i).j jzxdzd0j00 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 magnitude of .77;8d)xj )rxdghi0k jjdzczthe force on the 3.00-mC charge?

  A point charge of +Q is plac8keehgj)d-b , ed 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 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 isk )d bjee8,-hg placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.3 sdda 0a1k9f au+cq09z0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0ddsa uf 9cqa9100azk+). 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 =;sx3pn4tzk 9 y 5.0 nC is at (0, 0). Wha4; yt9pnkxz3st is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vert67aaz,t s)o:: ipshr sices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which a t ,a7 rhss:)oszia:p6cts on any one of the charges?

  Consider point charges of +Q and +4Q,b 9+rg- kxi;ao which are separated by 3.0 m. At what point, on a line between the two ak9bo-;gi +xr 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 thebm ed)j t d:fkfj4d,/f: biy1, bfwx17 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:1yw)1 jk ff: fbi,/f e,xbjb t4mddd7 the net force on it is zero?

  Charge +2q is placed at the origin an9:4 v m+w yo;-z8agmxb//vlxyf; b rvsd charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on ig-4mvyy v9b o/8alx zrb+w v :fxsm/;;t is zero?

  A copper penny has a mass of 3.0 gbc4ms y xqwb* ,htl2oyo3vj1 f)-,t7d. 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 the attraction e 21 iuqfgzeob8lm* n.,(;p(apy ot. zof a fixed proton some distance above it. How far above the electron is the pro1 bteqp.mo (*uay ,il.pnf8;zg2 o (zeton?

  Two 0.20-g metal spheres are hung from a common point by not5/.ecg pfv- 4 r:f 6knmeq7x8csk8 jqnconducting threads which are 30 cm long.g/q784rem6ftk: p5c.8s q-xvj nc kfe Both are 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 a charge pt7 qx2/q (lbdds)-xa of +40e. What is the magnitude of the electric field at a distance of 1.0 m from a(xq /bq)7dd-plx 2tsthe nucleus?

  What are the magnitude and dvn drk7o0x xnge(1 *w l.dx/e13)grwnirection of the electric field at a distance of 1.50 m from a 50(nlxr)g xx*r1ev0wk dno13dg./en 7 w.0-nC charge?

  A 5.0-C charge is 10 m from a szaf4t/ wh 06 92aidco7yn mls+b6qpg; mall test charge. What is the magnitude of the electric field at the location osla mc64piy9 tw72qdg/ +hf;b an6o0zf the test charge?

  A 5.0-C charge is 10 m from a small test charge. f ;dr*ayzvv1.+.zbl e What is the direction of the elecvb el*z1y. ;+fard .vztric field?

  A 5.0-C charge is 10 m from a small test champ 2qj /g.z u2;yr+ty/ frf5+m*rltygrge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of f2t/y/ l+qg5+g r;ymrm*f2t.z jp yruthe test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance o a6es9f6;hj anf 9fa6je6a;hs n4.0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed atzze 5h;g eqzy2ex3+ b3 the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric ebg hzee z33zyq; +x52field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of ad5+ai i ud 55urfs4 clpg-2mj5 meter stick and a -4.0 mC charge is placed at the 505 ju d-r5ida5uc plsm4gf52 i+ 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 m,2 odklzjpj;,jq hgiu q31u 11C are placed at x = 0 and x = 0.20 m. What is the d ,jlqi jp2kg1hq1 j,;u3uzo1magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners ofpcd pozbbn7q,2d9st;as90p6 a square of side 0.50 m. The last corner is occupied by a -3.0 mC c2 zs t9ppc076n,d;qboapbd9 sharge. Find the electric field at the center of the square.

  Consider a square which is 1bw91ud0)qb7uq/ skec.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC q0wq c/)7b1debk uus 9at (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 uniform w2+n6a0zfki2)ux9+ m ks1 z7 bij 2wlznb,owqelectricwiz2kb kso+j qwzfx920z2 1in wabnm u,+6l)7 field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a ptp+idl3b3* c:e 9yr omass 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 ibei2+ on.z0 wadz(6e 1/fabkan electric field of 6000 N/C pointing downward. What charge must be placed on the bz i+ ozb.ifee d16/bkaa(2wn0 all for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed ie:+ .pfntr63eant/d j4xi6c mnside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electricx/+jr6 t:afe cp6n.dn e34t mi field?

  A metal sphere of radius 10 cm carries a charge of +2.) ,2/tuftsfre 0 mC. What is the magnitude of the elect 2tfst,u)fre/ ric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm car.*a.yucc3.9 /:brmpb- wht k5mpy vzzries a charge of 3.0 mC. What is the electric f-*9/pkyv.m.ar by. mctz:3wbh5 pzu cield 6.0 cm from the center of the sphere?