State the law of conservati6s giu(. rwt3227c d 5nkymqxgon of electric charge.

  Is it possible for two negative charges to attract each otmg0h 2nwz g)t5pnu.-t her?

  Is it possible for a positive and a negative chaov+zzv :qvsv7 7u )z+ awlzj2:rge to attract each other?

  A glass rod is rubbed with awq6ca (c99 w* fs*d/pgim 9lvj piece of silk. During the process the glass rod acquires a positive cha vg s9ld*qc(9*wpj9icw a6f/mrge and the silk

  A proton carries a

  The model of the atom showb y: 1dkq8 2wepaq3m+qs a

  A neutral atom always hasb2jbv lazai8)dh d 2 vg)gvc2)e*5a*q

  An atom has more electrons than protons. The atom g34q* ,uned9t mfznr6 is

  Materials in which the electrons are +k . oq )f4 bagpjs;nar-0cy*mbound very tightly to the nuclei are referred to aapf+ 0k j* )a.r4;c-bngomsqys

  Materials in which the electrons are bound very loosely to the nuclu413 wdsa+4ylm)fcrhn z:/ xx ei and can move about freely within the mater )n+3 yx/dazusmfl r chx144w:ial are referred to as

  A negatively charged rod is brought near one en2z bal2:iw cr- tc:h:od of an uncharged metal bar. The end of the metal bar farthest from the charged rod willw t2:i o-cc:2 zrblh:a be charged

  Sphere A carries a net positive charge, and sphere +wsi g/x 4gq(fB is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groundedi +q/gxs wgf(4. Which statement is correct?

  How can a negatively charged rod charge an electroscop am,)ui.h )zuzwa-1 ape positively?

  An originally neutral electr6d)v s:bs ,chmoscope is briefly touched with a positively charged glass rod. The elevss: dbc,6m )hctroscope

  An originally neutral electroscope is grounde1cq369o txqf cz f:/h,vlxty-d briefly while a positively charged glass rod is held near it. After txov-xh 9 :3flc,ty 6qqzf1/ cthe glass rod is removed, the electroscope

  A positive object touches a neutral electrol4 . nnsga*wv,scope, and the leaves separate. Then a negative object is brought near the electroscope, but do g4w sl.*nva,nes not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insa 1taiomf+i0 8i 66e)pxocpcxk 6q--uulated 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 touchti6c6aofi- 8cq-k 1pie)mu px 6axo0 + 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 tufrw:.q q g9uz,gy tbtgs99ji,s/,(ohe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fir,q(tp p9d5upcst charge is larger in magnitude thanp5q9cdp , put( the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed neoxu-l)(,wbu zy8w .siar each other on an insulated table. Which statement best de,x(ysu-buwz) w8 oil. scribes the electrostatic force between them?

  Two charged objects attract each other with a certain forc*mf8xg dk;3s /ot7cav e. If the charges on both objects are8;/sdfg3v x*7t ocakm doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual at3: gge-pqd,k4zjt hp96q(glvtractive forces of F on each other. If the charges are separated by a distance of d/3, what are the neqpg9 qt3,vl: 4pg( e6hgdzk-jw mutual forces?

  Two charged objects attract each other with a force F. What happ 0p dw2spkmz b:cp70 jr4(ss.sens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their bjs z psspp.7 s2k:c(mr40d0w 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 happensdov9py *igsx2 ste;aqd ,j6- x/ha3hoz0.s r2 to the magnitude of the force on the proton aj;eh* t,vh/s9ai -or.dx2xsq 2zgdps y0o 63 if a second electron is placed next to the first electron?

  An electron and a proton are separated byl2a rd g3l3ky 31 g)mzj)kqn(9c+fy oz a distance of 1.0 m. What happens to the magnitude of the forceanfy1 kg9lz mrkq cjdygz+)(32o )33l on the first 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 happen qsh4-zzf3j j0s to the size of the forcej fsq0h-jzz 43 on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is p5 fyzol 8j9f+yddm1:e laced at the center of a square. When a second 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 on the positive charge at the center of the squareff5zd1m89l y+o:j eyd?

  A point charge of +Q is placed at the centroid of an equiz5 jx9iej7k *0w hvpv-lateral triangle. When a second charge of +Q is placed at one of 7v0ej- pji5wx* khzv9the 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 +Q placed at one of the other vertices?

  Which of the following )f1 snx4t-uw9+x;hc *dj vmop is not a vector?

  At twice the distance from a point charge, the strena qggy8bj 5cv 03ya7j/gth of the electric field

  Is it possible to have a zero electric field .i h /f;hd xlorkia-wg2m:h/. value between a negative and positive charge along the line joining the miri/ofk.l-.; wh: x dgh2/hatwo charges?

  Is it possible to have a zero electric field va yzz ,.vvb;r5qno8;p+nfjgd (lue between two positive charges along the line jn . +b(n5;vg8;zydjpozf qr v,oining the two charges?

  Electric field lines nea u0,u/ke7 g/f4 detorcr psitive point charges

  The electric field shown1bv b e(dv j+bpgaooqs/ p15*)

  Can electric field lines intersect in free space?4s;7;l p uhvttpw06xj

  A solid block of metal in electrostatic equilibriu3x316c9aofr5xmchh m m is placed in a uniform electric field. Give a sh5r3ao1c fx mhx9c6m3 tatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal spherex;/wpfb-6ai opxa j,( of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface ;6/fx wxoj p(-pi ,abais

  A cubic block of aluminum rests on a woau31bk+a poo0+w v sz2oden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the blocao1kz u3b +ovpasw20+k's top surface?

  If a conductor is in electrostatic equilibrium near an electric charqvsi4o7/i n 9ell u)0age

  A positive point charge is enclosed y9q.f2.yk. iclb )e ytin a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric9 .qtbf2l.k ) yyyeic. field at a point directly above the hollow sphere has

State three properti9-7xxddv dwf 0es of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electrep j p6doo/ei qitl0*t,9 zick vm4m2s7v;o2+on 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 many more proqvz97f;2lst6icbod ks e (* he( m/5oqtons than electrons does this piece of pl7tz6(f5co2kb*(mq9 seod q ; she vl/iastic have?

  What is the charge on 1 kg os,zbp te20wkbx5 t:hj 6d)x4sf protons?

  An atomic nucleus has a chari ; h0b:+bz4lc tvrcif9t, *rnge 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 2.0zewj(pxjq4. tn5l,pu1: kzbr)u e3b) and -4.0 mC, respectively. What is thek34nbjp)ere x :pl)wuzu 5t b,(z.j 1q magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between themlx x8;s,q up0q is 1.0 Npx 8qq,s;0ux l. What is the magnitude of the second charge?

  Two 1.0-C charges have a force between j :v9 puhud:eu/agm0:them of 1.0 N. How far apart are they?

  The force between a lpb: t(6k(nfb$30 \; mC$ 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 1.0-N forcez0 pn -m eprri27kc;-b;o/xi n. If they are moved to a neb p0;r2oi7 im-npexz- ;/nrk cw separation of 8.0 cm, what is the electric force between them?

  Three identical point f ziat-c8gqxp 0ka1.e1 w 5( htx)q4iicharges of 2.0 mC are placed on the x-axis. The first charhiq- (eicxt5g)a kq0 i4a118xztfp w.ge 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 acts on the charge at the origin?

  Three point charges are placg2g8u .ysxe)nk8 *n qted on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to un)g8tqeg 2x kns. y*8the 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 located at the following positions: Q1 = 2.00 mC*rtxf 7.hfq+5da o tfx*gwb 2: at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = bx+aw*tfxt*f: gr. 2f5 do7h q-5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placer)wjhcv ,b(38ev zqh 7d at the center of a square, and a second point charge of -Q37 v, vh(wq he)jrzc8b 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 corner?

  Q1 = 6.0 nC is at (0.30;vd 4intx1 k3g,fl61f0fqn rc m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of1n4 f1c60;3 xt, fkrnqldfvig the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0lr+ck0 v(8ou c); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC chargeo l rk+80v(ccu?

  Three identical charges of 3.0 mC are placed at the vertices y .btm5 (.mcnqj3y1cs of an equilateral triangle which measures c(y5my n1mb.3tcqsj.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 separabllb aceeqq9( *(;sq+ ted by 3.0 m. At what point, on a line between the two charges, would it be possible to place a b(e;bq*lq cse(al9+ qcharge 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 is7qg-mc :nsp d. at x = 4.0 m. Where on the x-axis can a third charge be placed so q-cd m.:7sgpn the net force on it is zero?

  Charge +2q is placed at 0,0fyhs2ehed,g+/ bqhrwjr9the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the for ebrsd,hh /0, 2j9w +qrhge0fyce on it is zero?

  A copper penny has a mass of 3.0 g. A totao/7wp-3n*evif ui z;dl 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 gr5/e.hqdscr. cd jdruf7 b9t8 *avity by the attraction of a fixed proton some difs5*uq78hj.be 9dtc rdc r d/.stance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by n +tt9oime /tr/dcyw1ez 9g j..onconducting threads which are 30 cm long. Both are given identical charges, and the electrost +e.d9 jmyrgt19t.w/coe / itzatic 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 y gkihs b36r09the magnitude of the electric field at a disiyg3r 0h6kbs9 tance of 1.0 m from the nucleus?

  What are the magnitude and direction ofrq3i bz4;fkxk+ qe,e9 the electric field at a distance of 1.50 fzke3 4rei9,b +qq;xkm from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnivtxhx9 z,4lm/) dzytm -pi m5:tude of the electric field at them 4zmt,) xp95:vhidmyzxl- /t location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the d-wc nr3 38 wcuk;xwc7tirection of the elect3ck cwt;7 r8wxc 3-uwnric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudko)2jloyzs-m d55ob 6e of the force experienmzoo-5bkdoj)2 ls y6 5ced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a valu40wc7zf:q dyee of 3.0 C and are separated by a distance of 4.0 m. What is the electric f0 ywq dze74:cfield at a point midway between the two charges?

  A 5.0-mC charge is placed at 59 9zzu9 mrxiw.(msd;fe ;6iw1ugntuthe 0 cm mark of a meter stick and a -4.0 mC charge is pla gu9m5d u9 ezzn isrt;1xmw6f9ui;.w( ced 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 mea7)tmp0 zu; 80y+ nizk l(xgvC charge is placed at the 50 cm mark. At what point on a line joining the two charges is tlyxui)mva+ pngz(07te; 8z0 khe electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are plac 8p95,dwyvsutc ut8w3nal,4r ed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at thl anr,uspt ywu5 4dc3w8 89t,ve point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Thexc;qfp2ga+u d s1 o;/n6wv1 qs last corner is occupied by a -3.0 mC charge. Find the electric field at the center of ;2pq d1xguvn 6+fa ;q/wsosc 1the square.

  Consider a square which is 1.0 m dj 5bdmm*c qc,-m zjz6e /u1gea* 2hi/on a side. Charges 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 (0, 1). Wq jb *zc62jm*ami/5zudc-dem /h1,e g hat is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5 zyv;/ xo3sp, t4ii-1k u3ix8r dez8d2,mzejh.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fdrdj8pe ez;tz 1yix,z2m -vx3os i, ki4h8u/ 3ield?

  A particle with a charge of yv ml):9wp0*q96z:m ontbi qd4.0 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 electricdj :g 6 34z/b*fl p.yzrw3k4yov vn3ol field of 6000 N/C pointing downward. What charge must be plf/k yyb:p3rvgjlv6z3nld4o oz3 w4.* aced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed inl g7q)8vkb(xzwm1 ru. (kp3niside a uniform electric field, and is suspended against the fom(kwurv l.x)7in1b8z kqp( g3rce 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 m6 nda;(l*y 3xxbf)oo bC. What is the magnitude of the electric fil*3xo(ad6oxbny) fb ; eld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carriokm7:m4-. fnhp /rpy ies a charge of 3.0 mC. What is the electrich:4k rpf im/-7pym .on field 6.0 cm from the center of the sphere?