State the law of conservation of electric chargomt,3 sp/u:vr e.

  Is it possible for two negative charges to attract eache7v49;+x,hz5o mdzyjb z pb3j d*cyi2 other?

  Is it possible for a positiv1i6,ti7))bs ezp,jz b2xv,r k uwf6sb e and a negative charge to attract each other?

  A glass rod is rubbed with a piece of sil 4azr )cc7ml64oozs, n.xn( iqk. During the process the glass rod acqcr,)l oiqox.n7n asc4z6z m4(uires a positive charge and the silk

  A proton carries a

  The model of the atom shoi sk0damw,e0qx035g j2 qr+frws a

  A neutral atom always hasm6n bnvw8 q8o2

  An atom has more electrons than pr3 tum2e7 )(6.ugkyheuck) :1cmvsezr otons. The atom is

  Materials in which the electrons are bou)y*;gt b4ri dond very tightly to the nuclei are referred;4) tidgryb* o to as

  Materials in which the electrons are bound very loosely to the nu ,gv;rb:qyjc7cs jl4 24ypte,clei and can move about freely within the material are refecy j4g7cy4st, ,qj;plebv: r2rred to as

  A negatively charged rod is brought near one end of )zk liu38 d t6+ev7ogban uncharged metal bar. The end of the metal bar farthest from the charged rod wileu7t b zlvi+d )o86gk3l be charged

  Sphere A carries a net positive charge, and sphere B is neuto0. g+ot8xls lral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded.+s0x log tl8.o Which statement is correct?

  How can a negatively chargj7ik 6jsbi)v .ear79 fed rod charge an electroscope positively?

  An originally neutrany1. qu/yo;qr l electroscope is briefly touched with a positively charged glass rod. Tq rn.q;yuy /1ohe electroscope

  An originally neutral electroscope is grounded briefly while a positip 8pjs:m:jxs+ vely charged glass rod is held near it. After the glass rod is removed, t:8mppxj js: s+he electroscope

  A positive object touches :m f iiu2se+xfnd6+rh. bce-8a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happen2md-6ieebn s8+xcfh. :f ui +rs to the leaves?

  A large negatively charged object is placed onkk4m(o k f*xlg270kzf 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 by the first ball, strikes thozx (74kkfkgk2* 0mf le 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 c-oesaedh . ch rm06o)/c.r) pthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge iqp+gbnkz5lr+r* ,+ee3-edaze f4s i 0s larger in magnitude than the sae+ek d i+qlrpe5 -srn*0 fe,+g4z bz3econd charge.

  Sphere A carries a net charge and sphere B is neutdauspu69 r.ab/ wb(h. ral. They are placed near each other on an insulated table. Which a(9wu r6p d/uha.b.s bstatement best describes the electrostatic force between them?

  Two charged objects attract each otl hzjbt;g/ibe86sc: 0her with a certain force. If the charges on both objects are doubled with no change in separation, :i chez/st b0jl8bg6; the force between them

  Two charges are separated by a distance d abri j ijhtb97u(9jt rn*/-cz9nd exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the 7(9t /j tj9irbzuib9rn -ch* jnew mutual forces?

  Two charged objects attract each other with av)qkuq5vr0b02fek r 6d*z9w q force F. What happens to the force be0re9rqb *f 26qqv5zv )kuw0d ktween 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 happens tv ((1uz7 vpxlro the magnitude of the x v l(puzv1(7rforce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separatedt73kiw2yjtl-*jp)1 n cp-mm) ;l mv td by a distance of 1.0 m. What happens to the magnitude of the forcemvk3p-tctl d y nj*)7 it- ;)wp1jmml2 on the first electron if a second electron is placed next to the proton?

  An electron and a protu/qpxzv5 -i/m8 ,wf*zpi ii3 qon are separated by a distance of 1.0 m. What happens to the size of the forum5/z-q w*/p3 8piii zqx fvi,ce 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 (w06z m,pi. geygny)s 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, identical charges of -Q are placed at the other three corners of the square. What is the magnitude of the net electrostatic force acting onpy y)6z,igme n.w0s(g the positive charge at the center of the square?

  A point charge of +Q /f-f -og:si fw1v *vpw(31nwjsd.sijis placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle'so3 -1:w ff- iinwssvv*jdgwps.f/ 1j( 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 vectort- 1qc xrx8nx+wh*(nm?

  At twice the distance from a point charge, the streng 7a db, o-nw jv)qs, h.wz+orrk;2cnt5th of the electric field

  Is it possible to have a zero electric field value between5 51;e8ip: onrbohqbj k+6bu n a negative and positive ch+5 6j qrpbh ;euk1:ob8 obnni5arge along the line joining the two charges?

  Is it possible to have a lbi,t2,u tj5 3( yirmuzero electric field value between two positive charges along the line joinin y3m,t(, i2jbtli 5urug the two charges?

  Electric field lines near psitive point char1 xtx2j05uy ymges

  The electric field s3,,9 ptm.mxkx)zjkxyisz(f+vy z+y 3hown

  Can electric field lines intezbn6ov 0+;t-tlx)qb l rsect in free space?

  A solid block of metal in electrostatic equilibrium lv, rgppf(3/j shz r3fh4,e6h is placed in a uniform electric field. Give a statement concerning the electric field in the block6,vr (h jfs43 ,r 3zep/fglphh's interior.

  If a solid metal sphere and a02s, ps1 w bdkcy2)oek hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surf0ck2y2d w k,opsb s1e)ace is

  A cubic block of alumppl sp0vdt)m2 en5b5zjn8t;n)2 ( gtlkm(h 4pinum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the p(npn ;5h(kpeb jvg dt) s28zntmp54tml)0l2charge on the block's top surface?

  If a conductor is in electrostatic equilgm49b0 nll fr1hy1xf t ikdq50v- d*o(ibrium near an electric charge

  A positive point charge is enclosed in a hollow m749 mra*laz yzetallic sphere that is grounded. As compared to the ca4 9zz7aa lrmy*se without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of condu xuq0 g*4x2vdqctors in static equilibrium.

State Gauss's law.

  The charge carried by one electro;xa8 rmve z;3jn 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 c c6u3frt3xe:a net charge of +2.00 mC. How many more protons than electrons does this piece of plast rx3 cu36cfe:tic have?

  What is the charge on 1 kg ofuq4*.oa njpm7nm (nm7of 5t 8c2gr dcl u59rn. protons?

  An atomic nucleus has a lvz o h)g:.o/icharge 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 and -4.0 m k3of- 0)raf/qlktvgb 2id60j C, relv6b3rk tf2kf0i-g j qd/o a0)spectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second chargo ycrbp k)h,zm*)m r9.bmg22we, and the force between them is 1.0 N. What is rp9k,yzc o)m*gb)2m bwh mr.2the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart cr:cyn 0 a3 ;gclk)0rqare they?

  The force between a hvkeaqd1twa o:vm908 l+7sd($30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, in*c..u vgr o3h- xf1ibnitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 g.br3-*1v. n ixfucho cm, what is the electric force between them?

  Three identical point charges of 2.md7p+21vje4z (izh .) d iwtal0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 5hai( zie1l2t.7j) +p z4dmvwd0 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 chvkq+bdt 4v..jlkn/ )varge of +2.0 mC is placed at the origin, -2.0 v.)ljtqk/.db+n vk4 v 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 charge at the origin?

  Three point charges are locateapsv m:b)t3um:f 5-w nd at 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 on the 3.00-mC chargn 3s wmpat5:: -muf)bve?

  A point charge of +Q is placed at the center of a square, and a seconoi*3(tuzy+ ruovdfz 2p07rk w ;pk 48xd point charge of -Q is placed at the upper-left corner 7i0zxod (r*yrou+u2kkp38 tf;v4p zw. 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 ky fnh*n xtx*po-k925xu8ou 8 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on tht5o*x88ho u f-xun2xpkk9 y*ne 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (+nbu*3 wskt+b0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5. +tbwn*ksb3u+ 0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaterpmjj cmcb* /:)up f2 )cxio5v1g09cit al triangle which measures 30 cm on a side. What is the macv2xuj0) m5ob : mi p 9)/cpgfctij*1cgnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q andz 49oiv* 05vzgm 6vxts +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible vm *zxgtvzvs 06i94o5to 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. wez7zi7 ( ofoi8tjf46 Where on fwi8 7 e(z 76zfito4jothe x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and9 wef4k6ew9d7t wqf0 j digm:- charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that t fwi64efd 9wt: e j9kg-qm7d0whe force on it is zero?

  A copper penny has a mass of 3.0 g. A total o06bed 56rj c t(uayrsshaf1o2os 40+bf $4.0 \times 10^{12} \; electrons$ 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 u5cg 8yn+t2 negp against the force of gravity by the attraction of a fixed proton some distance above itng5yg nct8+e2 . How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threaj2 *xrdqt0v+wquycp+h +9/z xds which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the anglep9yx*xv c jq ++uw/20ztd+ hqr 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 magnitude of the elect*.9rh 3r.cjci )go gxwric fielwhg jcx.*g ).9c3iorrd at a distance of 1.0 m from the nucleus?

  What are the magnitude and uc* ,gv.oxk(n direction of the electric field at a distance of 1.50 m frouk*gxn cvo.,( m a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is t6mm:df jkd8 ed r1p;(dhe magnitude of the electric field :8mjd16e ; fmkr ddp(dat the location of the test charge?

  A 5.0-C charge is 10 m fl)pb/: s;c 9 y(iblz vkd8+rlkrom a small test charge. What is the direction of the electric frplb8+dsbk(; lcv /yi9kz) l:ield?

  A 5.0-C charge is 10 m from a small test charge. What is t:)(hic9cxwtqm e1 3ybhe magnitude of the force experiencedqymht9xew( 3i1 c ):bc 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 sepqhsrc1 c bfl+ o91q-qhh;w48b arated by a distance of 4.0 m. Wh1 f8 qhb;qco 9blh1-sr+ wq4hcat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mCng.vq(g8,r e7 wj0t qq charge is placed at the 50 cm mark. What is the electricq(g nvg,8jq t7 .ewq0r field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of s).vr4ir 04kqa(63:2idkuuxi jxuw ya 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 ei.k ju w6)xq 4 :ruu2dkia3y40ri v(sxlectric field zero?

  Two point charges of +3.s;muhm2r 2twuql) jnm 34yi))0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at t4lw3)2hyjqnt;m2m)r) u is mu he point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 vx5 uxs-2t bh1j7sp ..p.cygfm. The last corner is occupied by a -3.0 mC charge. Find the electric field at the c-x.xy5.7ps cv.ufp2 gsth1jbenter of the square.

  Consider a square which is 1.0 m on a side. Charges are placedt knt.h: 0t.xw 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 (0, 1). What is the magnitude of the electric field at the square' txktnt.0.w:hs center?

  A force of 10 N acts on a charg6 ./bx vmx)llte of 5.0 mC when it is placed in a uniform electric field. tv6m x.l/ l)bx What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a ma g. 0)i- bh8ctwp .:dkyx3(qxot7m goess 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 4/yil5 81bgchbo ibjof(l-m+ N/C pointing downward. What charge must be placed on the ball for it tb5o - (io8ijy1b+g/lbhf 4mlco be suspended?

  A foam ball of mass 0.150 g carr*zl(amyn i3 wj3 06we: kkri5xies a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended againjz k0 ik(*mewy x36 3w:lr5naist 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 +2.0 mC. o-ry c+ dkq*k5 What is the magnitude of thqd*o- 5rcky +ke electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carrienet*sdpv wf-1tij*y.h0 p2:dl7 xp6 as a charge of 3.0 mC. What is the electric field 6.0 cm from ti26ln d0x1ptf* -dav:ywep . 7ps hj*the center of the sphere?