State the law of conservation of elm5s :q0wb ,psaut 2d/ih,u6 kkectric charge.

  Is it possible for two negative cha:yorcs)-f2t :ue5sz p rges to attract each other?

  Is it possible for a positive and a negative charge to f/o b02s04w wc hdrxcgq1pu(j 76j3ih attract each other?

  A glass rod is rubbed with a piece of silk. Du cwys.yc t*ihxe3iw*+zyb 18*ring the process the glass rod acquires a positive ch3ysw txbh1*+ycyzi ie.*8*cw arge and the silk

  A proton carries a

  The model of the atog-if: k9-0hhbj i:jeq-nowq0m shows a

  A neutral atom always)5,udojm qpd4yd/x i qr+)2 ny has

  An atom has more elei z6b*u u4(xxom)zzzb 8w2bi-ctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuesoc (+ 7j,li;qm*8oho;hro zclei are referremro;o(8oijchsez,h lq7*o; + d to as

  Materials in which the electrons are bound very loosely to the nuclei an3(n c b9oap ;h;bp)kwrd can mov pbrw)9ackp(; o;nbh3 e about freely within the material are referred to as

  A negatively charged rod is brought near one end /jov:ghn, 6sd of an uncharged metal bar. The end of the metal bar farthest frohd g6/:,jnsvom the charged rod will be charged

  Sphere A carries a net positive charge, a4vxb x wi-rso .+ecf55nd sphere B is neutral. They are placed near each other on an insulatex4- .wiesc 5fx+ 5obrvd table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively cqrf.xtzbld:6ii/ ) fhpo .j64harged rod charge an electroscope positively?

  An originally neutral electroscope is briefly to9th6fe r kse0eoqsg17 zz1.7guched with a positively charged glass rod. The e67 eeo0thsr eg9z11gz.q7 ksflectroscope

  An originally neutral electroscope is grou9 hs2he7nu,n .eo7 ijpstt * .k4kn/punded briefly while a positively charged glass rod 4pnnuto9*injphs.u h/e,k7e 7.2skt is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope,/8 tttm5dldc3 and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it.l8 dt3m/ttd5c What happens to the leaves?

  A large negatively charged object is x9auu/h(bv8x bvg.kyg25n * c placed on an insulated 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(h8b .uy* vk/9ua2n cxggbxv5 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 Couloc(n t 9n+9bgxo /4 lyib,t2ghzzgt(2pmb constant $k$, which appears in Coulomb's law?

  Two charged objects are sm,et q q svk.-yi,*5wuo(xefjp6 w+2veparated by a distance d. The first charge is larger in magnitude tha.etvw,+*xupo ew,j v6qm(qfsy5 - 2ikn the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are pzi6r tob-.p7y( kffe5laced near each other on an insulated table. Which statement best describes ti o7 fzt.fe6pb5(r- ykhe electrostatic force between them?

  Two charged objects attract each other with a cert82p(v65txvdh i*hbg rvpder pc+.0qjn 4o50iain force. If the charges on both objects are doubled with no change in separation, vdixnh5 ppp4 8*j eibqod6.r+0 c5 vv(hr0tg2the force between them

  Two charges are separated by a di7 ;ih - e;dg;k5fpfcy3q lkf6qstance d and exert mutual attractive forces of F on each oik;q; qy35 p;f -7d 6chflgkfether. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens nr/srwjhji.;gn 4 (3oto the force between roj wn.j h(/ni4rs3g;them if one 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 1.0 m. What happen:as mn nyce,y,2:6i bms to the magnitude of the force on the proton if a second electron is placed next t6a mc,n,simn:2 ybey: o the first electron?

  An electron and a proton are separated by a distance of 1.0 m. W7 mqpoc8b+tzk7 a(dm7hat happens to the magnitude of the force on t7ma zq b7k78mp(d+otche first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a dis bihhl8xlx b./ .8ciz6tance of 1.0 m. What happens to thehxi. hx8. 8/6zbbllic size 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. When a second p,sm(5 x1gxmf joint charge of -Q is placed at one of the square's corne (xfgm,1xm sj5rs, 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 an equilateral triangle. When:d d7981.m8snccy vm0 vqbncu 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 t9.ncdq8m: 0c8v 1y sd7cnvubmhe center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is nx,n( h9ro3fut ot a vector?

  At twice the distance from a point charge uc fcx2/f,/uv;h nr;c, the strength of the electric field

  Is it possible to have a zero electric field valuey 8kj -xqw4p l1l:v,;6ocs tlj between a negative and positive charge alonkl1x;- o:t,j sjqypc llw v684g the line joining the two charges?

  Is it possible to have a zero electric field value between two posbbhg:c u n5)gj2x u/x,itive charges along the line joining thegg: /xx2uub5c)hn,jb two charges?

  Electric field lines near psitive point charges3sqroon44xj2all jx k5 rbd,)3f, a 9l

  The electric field showni6t.0 nvd7se e

  Can electric field lines intersect in free spa-u)v;jgw0xlnlrvvhsb (r102 ce?

  A solid block of metal in electrostatic equicsxqlrr54jqe n1, v4)toknsq2)k6 0 xlibrium is placed in a uniform electric field. Give ) snejq, t qqk5424ko)sx0c61 r rnxvla statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters )fdn1fp*ntpme*)ys 6 d63ro m are each given the same charge, the electric field (E) midway between the center and the surface imon yfm 1))3tr6*fed6 *snpd ps

  A cubic block of aluminum rests on a wooden table in a region where a uniforb.+1:vhm jnaj4v cj,j m electric field is directed straight upward. What can be said co4a 1nj .vb,jhm:jcv+ jncerning the charge on the block's top surface?

  If a conductor is in elect(;7e e7tpy,k. nbgwvlg*3 tz rrostatic equilibrium near an electric charge

  A positive point charge is enclosed in d 1g i8wbd(d:y. nutq1a 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 sphereiq b8dw1dt d:gyu1.(n has

State three properties of conductors in static equilibriosq ,z (g;m9cvib+ls6um.

State Gauss's law.

  The charge carried by one electron is 6khe o(994 kaettc+wo$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a w/3ypvz my 5fos. s+n7net charge of +2.00 mC. How many more protons than electr./s5oyyn3vwz+ps f7 m ons does this piece of plastic have?

  What is the charge on 1 kg osz2ju.l6 0:uaeh8y g hf protons?

  An atomic nucleus has a char.1 eg ;rp wli.a8re+vwge 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 rde-v04io /ymand -4.0 mC, respectively. What is the magnitude of/e v-rmydo i04 the electric force between them?

  A 1.0-C charge is 15 m from a secony8gaa d 9vykp(y.5 qz7d charge, and the force between them is 1.0 N. What is th7yq8 a9(pydka5zg y. ve magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 Nv. cgv7 gg:k)l. How far apart are they?

  The force between a -u(o+b8heqws $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially jh 1q91 ;8capiptyr+7jrkl 2eih,ym v ocl991 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the 29pmv+cjh pkoqh7;eyllyt8 ,1j aci1i r19r9electric force between them?

  Three identical point charges of 2.0 mC arel eq9do trkl1)* sd:84/zvnfa placed 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 force which actqe: 91oskl/ldaz*dt fv)4 nr 8s on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed.)wd yz1y9)kxd3:n(j, l bvkxm- c8al7 otqe n 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 an (ac3)o-8 xnn:zt1y 9x,k dbmld)y7j k.eqwvl d direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at*, q gkavhq+0p.b1/ nx r2jsup the following positions: Q1 = 2.00 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 the force onrk * sh p b0jv,qg.+xnpq1u/2a the 3.00-mC charge?

  A point charge of +Q is placed at the center fsu3(:zv *h zugoz.b*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 thirdo hz*v3*.suz:(fg u bz charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0 v e(3b/vvos6x.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitud6 (vo /3vsvbexe of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -19*jxv( ic kpgeu,-zw 1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whaiu(-xjgk,9 *ecwzp 1vt is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices o r4ftp8 lby;5rsm*o+uhv 4p2qf an equilateral triangle which mea*bp8ur ml+rfhp 4o 25 sv;y4qtsures 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 are separated by 3.0 m. At wha: /rs sj ag93-rki+xo6gcdqm*t point, on a line between the twor o:r6qg dcj gxi9*3kss/a- +m 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 the origin and a +9.0-C charge is at x = 4.0 m. Where on ,t0vtb9a6h*99d itjz tk7do athe x-axis can a third charge be placed so the net force on k 6z d09i9tdttav t79ba,oj*hit is zero?

  Charge +2q is placed at the tm8zz,8ig9+w;uojk s-yv e + 1nybpq-origin and charge -q is placed at x = 2a. Where can a third w,8 v8-yq+ s9bigm -tnk;yju1ez+opzpositive charge +q be placed so that the force on it is zero?

  A copper penny has a mt/sks*e (mrjp e:z))aass 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 gravity by tmjiv .sy)c7 7z1c i,twhe attraction of a fixed proton some distance above it. How far above the electron is the protoni7vtcswi), jzcy.m1 7?

  Two 0.20-g metal spheres are hung from a co s6zib; *jrj9dmmon point by nonconducting threads which are 30 cmdjs*6bzr; i9j long. 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 of +40e. What is the makuws) te ///tm* q1lsagnitude of the electric field at a*/u1 l)etwka/ sqtsm/ distance of 1.0 m from the nucleus?

  What are the magnitude an+p-sup9sy lzs,a (ia,d direction of the electric field at a distance of 1.50 m from pszi ,sup9as ,al(- y+a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test t /i zbg11xwnj3hpy+ /u co,enpl.l7+charge. What is the magnitude of the electriy1/ lwb.+ptx31 +nc7honj ugepzi,/l c field at the location of the test charge?

  A 5.0-C charge is 10 m frc8h9.2 p ymw7p(j0q sb vsg9rdom a small test charge. What is the direction of the electrih.(2vmp98 dw09sp7jqs cbyr gc field?

  A 5.0-C charge is 10 m from a small test charge. Whr9 ae ,)6,a 0x) :8iau wifw(bwvpa)qq.lomet at is the magnitude of the force experienced by a 1.0 nC char:9o f,twqp 0)ae.w )ub6(i rqlm)ev aa,x8awige placed at the location of the test charge?

  Two point charges eacc+( z;bc(sf2l qq .xpzi ka56ih have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric f+5qi.ai(l(;k fz2qx 6cpsb zc ield at a point midway between the two charges?

  A 5.0-mC charge is placehu* 18u.k u6mwhr3i bkd at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark.1b8 u*wrkhmk3. h uiu6 What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm marzfpxi0, i w58yk 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 electrwi,f8xz0ypi 5 ic field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 andflmyew89 j7) v.y( gs;mkrk h2 x = 0.20 m. What is the magnitude of the electric field at the point midw2;jgysr8k m.fh7k el( v9 wm)yay between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 mhxope 1;rw+jl3 ) mic(*vlxg sfpx+9 .. The last corner is occupied by a -3.0 mC charge. Find the electric fie9xx1iprvhg+)w ll*jx +meso fcp(.3;ld at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corne;yf xbmnd09)*0a pcs 3ca fs7trs of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1*xya09 aptcb c0;3dff7s )ms n, 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 whdfy(u9 on4aly. 4 ef4jen it is placed in a uniform electric field. Wha4nf.4f4 j (ey lo9audyt is the magnitude of this electric field?

  A particle with a charge bsx ;u )qn8 cm.ws9js.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 el(i40 ryw tfr8cectric field of 6000 N/C pointing down4i0 ty cr8fr(wward. What charge must 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. xg u y,3l,rziii+k ygb r4u00b, x2jo+ The ball is placed inside a uniform electric field, and is suspended against the fo,i zlb,g40x+ 2j,g0b +iuxr 3r oyiukyrce of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carrjz 4t cv/zu).aies a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphzaju c)4/ zvt.ere's surface?

  A metal sphere of radius 2.0 cm carriewv jle1ll 2+:qs a charge of 3.0 mC. What is the electric field 6.0 cm from j:el +w21lqlv the center of the sphere?