State the law of conservation of e0 qamv tp)3 (2dj/ljoilectric charge.

  Is it possible for ttf c)6.bez/v*pqb00ibgot (g wo negative charges to attract each other?

  Is it possible for a positive and a negative charge to attre*o8/w0mn w5a j m5j-proipv9act each other?

  A glass rod is rubbed with a piece of silk. During the process tlc*m d6jlk9z3he glass rod acquires a positive charge and the silj cd6kml3 9*lzk

  A proton carries a

  The model of the atom shows 2c pnkut67klez 06; nfa

  A neutral atom always hbnyw8;c-cese /z *3hlas

  An atom has more electrons than protons. Th;s flc7(m bb(sds(7yj e atom is

  Materials in which the electrons are bound very tightly 1or wbs74y-6:j *th mn ca2nozto the nuclei are referred shw1 nratjon6 m:c4o2-*7zybto as

  Materials in which the electrons are bound very loosely to thes3-;jw 18xksnis hqqau2*py , nuclei and can move about freely within the mateqs s* uh ; aws,kx8njyi31-pq2rial are referred to as

  A negatively charged rod is brought near one end of,z a*gym3lx -3xv3rq4hbxa (e an uncharged metal bar. The end of the metal bar ,-4xhb 3lrq *xv3 ge(azay3mx farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are placcyb gfaxz5(+6e bzf(a6g 5c+xyd near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an rr)zzx,x iqhif -74:eelectroscope positively?

  An originally neutral electroscope is briefly t1 bddg4l t-;u:.sv cc/taid8 bfanobm5h6; *n ouched with a positively charged glass rod. The electroscf;cdd s;1 :cblta*mba. 4b/vou568hntn- igd ope

  An originally neutral electroscope is grokpwu.8 n ;zqw9unded briefly while a positively charged glass rod is held near it. Afw.k9 pz n;uw8qter the glass rod is removed, the electroscope

  A positive object touches a neutral electrosco81w9elwz,bv gpe, and the leaves separate. Then a negative object is b l,wzb 9w81evgrought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutrp jk 34/)rtcr,(qpco cal 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, st4 k /rpqc(tp)cc,rj 3orikes 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 Coulot2nsm0fb2jc )mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated m.vnkylw vuj786 74sls,b;umd o/r3c by a distance d. The first charge is larger in magnitude than the second chk ns;/4u63vmmcylb r.l7jo d7vsu8w ,arge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near1fr b2 pt+**kdno5rkq each oth5pbrrq*k+ f1dtn k*o2 er on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects atp b:q k;zt1ew55ttxh .tract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force betweete.t hzwt 5 5xq1k:p;bn them

  Two charges are separated by a distance d and exert muv51p dj fy( 3p3zqqa1tldcw59kp4fap 6n*ag :tual attractive forces of F on each other. If the charges are separated by a distance of d/3, what np flq1pa fc3d* k5pt:yva3 (zqw1g954da6j pare the new mutual forces?

  Two charged objects attract each other with a force F. Whatiz b2+e xg)ey5 happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its origi) 2geey5xibz +nal value? The force is now equal to

  An electron and a proton are separated by a distance of ;*tsh p-vt5akreu3p/x1 n l z abg31u01.0 m. What happens to the magn 1p*tr za sln3ehk50put-a1/ u3bxv ;gitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. W)0 ivtrx gybqwqe5u,6( n i2b7hat happens to the magnitude of the force on the first electron if a second electron is pgun7205 r )yw6qei b(xqbt v,ilaced next to the proton?

  An electron and a proton are separated by a dismw)k3ucdv pw w,75/zx tance of 1.0 m. What happens to the size of the force on the proton wk w/v)cx3 ,5z7wpmdu 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 point c zx8j-2j*l+6iqoiwh xharge of -Q ixjw+ i lx86zqi2joh*-s 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 square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. Whe)+v2mm q qgxa(n axgq+vmmq a 2() 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 +Q placed at one of the other vertices?

  Which of the following is not a vectpf4 d(fhc xxkz- 9d9/ior?

  At twice the distance from a point charge, the strength of the electric fiecg0nxb3p 6zw(ld

  Is it possible to have a zero electric field value b vvt2 2b,(vwfzw79tp wetween a negative and positive charge along the line joining the two chawwvwv( vp2tf b9,2zt7 rges?

  Is it possible to have a zero electric fiw/ xhpq1 ww1 46q-ipioeld value between two positive charges along oiwpq wh164/ p1xqwi-the line joining the two charges?

  Electric field lines near psitive p)o/xi /mw ;nigoint charges

  The electric field shown p)oz*t 8wd1pkojn7v 5

  Can electric field lines intersect itza w.3, vgh5bl3pg0h n free space?

  A solid block of metal in electrostatic el:24h fbdayo 4bn57 :hc3jtxfquilibrium is placed in a uniform electricx:47 nfa :th3 c24 o5jhyblbdf field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow met3yja s bor0jmx1r3f 49k:u;bq al sphere of equal diameters are each given the same charge, the electric field (E) midway between the centabkrjr: f 194ms0boqu y33xj;er and the surface is

  A cubic block of aluminum rests on a wooden table in a region el)8wa uqtmd77 .84nfi 9tovvwhere a uniform electric field is directed straight upward. What i)f.7 o878nvtea u 9l4 dtmwqvcan be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium net4arz fs sa8*uub,fqeei1mbe g.*;s q6 q;r4) ar an electric charge

  A positive point charge is enclosed in a hollow metallic g51 t5e6h;ifonwkova-3:ye; ghsc.c sphere that is grounded. As compared to the case without the hollow sphere, the :-cn.5aof56hoe 3gekhg yi1tcw ; ;vs electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibr7hr h7oqk(sjau xj5:: ium.

State Gauss's law.

  The charge carried by one efbf1x ea88hl :lectron 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. Hy/0 /6bhl *axjwf-s wpow many more protons than electrons does this piece of plastic hav /lybs6fwa*wj h0p /-xe?

  What is the charge on 1 kg of protmpgj3mszr86 2zl;x ,uons?

  An atomic nucleus has a chaozaxxav kz ou-f1* o,q /r/d/u6og;7mrge 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 2.feoy,bm ccf +ua5z*of 2.0 and -4.0 mC, respectively. What.e2fubaym* fzo,c +5c is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the f2,lf 2f:iofuzorce between them is 1.0 N. What isof f22,l zfu:i the magnitude of the second charge?

  Two 1.0-C charges have a fc3 pxgr0 t4+d/ elqh+um/pvm 4orce between them of 1.0 N. How far apart are they?

  The force between a e8.)u 1lwyk ec$30 \; mC$ 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 force. I. e dgrpo24+ 0qjw:hokrpd +8kf they are moved to a new separatro+.0d hkgp4+ wekq8 o2j:rdpion of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The rw;.( kxlk o2rfirst 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 elecwor2;. (r kxlktrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axi2f3j kepc+2h(5csv du s. 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 ar(3dk pc5f+ escvuh22je 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:2,jf j smldz/8 Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 =d fj/l ,js8mz2 -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 +Q81v ovnm)8kks is placed 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 posi8knkm osv)81v tive 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 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC jq7m uc* td2w:2oi*a2.9airvyj ps ;vis at (0, 0). What is the magnitude of theu* 9i.wmvaq22*a j ov 2s7t:jdicy;r p 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.qvlmd9 - yh1p wj+*4kzfvm 3-x10 m); Q3 = 5.0 nC is at (0, 03hkj+*-z x1lvmp fvq- 9y4mwd ). What 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 z-ci,gj yn,8p of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts og,j-iz yp ,c8nn any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. Af (yid0r,ub j*1fnu.dyc 7 sb8t what point, on a line between the two charges, would it be possible to place a charge of -Q such that the e8ndb ,7* .iffdry0(1bu c juyslectrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C chotc 26es v0bvxwnu ;..arge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it i26vc0.etx ;s vbn wou.s zero?

  Charge +2q is placed at the origin and charge -hh8llifmf8( z/ tb+18azk w-jq is placed at x = 2a. Where can a third positive charge +q be placed so that thzhlm+h k(8/a8t wjzb81if- lf e force on it is zero?

  A copper penny has a mz)rulj1 x(k+ ul,un0.u wn:doass 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 againsp;6z qs - +yfknr;nq*kt the force of gravity by the attraction of a fixed proton so;yr;qp+nq *n k 6k-fszme distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting gfp: pz4xm gqm27r ,+zthreads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle bprq ,g mfz24+g7zxpm: etween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magn,ha; / jagdm/ haby0+w0g.ghm itude of the electric fi00mhhg,wy ;.+ag/ab hjdg/ m aeld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fiel2jxl39t.ejybas ;bh4am2c 1t d at a distance of 1.50 m from a 50.0-nml2taj3bb ysx4a.9; j1eth2 cC charge?

  A 5.0-C charge is 10 m from a smal(+7yqfred 87gh v bu0ul test charge. What is the magnitude of the electric 8 bu g+hvqeyu07rd7f( field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What ih* 9y7h sjt+yvs the direction of the electric fis9t h*yy +hjv7eld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude oj s(qr-mz qm(k.vq*6.q kg5r if the force experienced by a 1.0 nC charge placed at the location of the test chargz gis qk.v5( q(rjkm.6qrm-*qe?

  Two point charges each have a value of 3.0 C ayct .; xdqum;g,z fm36nd are separated by a distance of 4.0 m. Whuqd,tx.m fg6;ym;zc3at 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 meterb2hz8ny d yu6-d1hqh3yp3 ns04o wj+o stick and a -4.0 mC charge is placed at the 50 cm mark. What is th njy 62yzh-sodhn +uy 13qw04p ob38dhe electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 r,l:1 suos:s pcm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on ol1rsp:,s u:sa line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and:7 p5p us22g wgzmm,bq -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point gw z :s2mqb2,p57mup gmidway between them?

  Three 3.0 mC charges are at the three corners of a square of sv7c9zu9 rsqf 6ky2; bhide 0.50 m. The last corner is occ7 9s6ryh 2qukv fzb9;cupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are pl*wurab;gn f1 m*d ; 3cvz:,ucnb k 7gx6j,xcy5aced at the corners of the square as follows: +4.0: 65u1bbvuf ,x*,j;gxnc cm73;w *yck nrzgad 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 charge of 5.0 mC when it is placed in a uniform electrh9dpc6 whvi8 :ic field. hdp vic6h:8w9 What is the magnitude of this electric field?

  A particle with a charge x /50 js(us8 on(dqdawnt.y(dnna9k2 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 mas s/sv7qbr mufu (nr/irzpyt w89l 59*/3qksu(s 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball f9ynzb/((wsk pflr isu 538ut m9r/qvs* ru/q7or it to be suspended?

  A foam ball of mass 0.150 g carries a chargejx.9tbmc gr: )p/u p6dtf a9l6 of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric fx69b9c /dp6tjgp ru: lamf)t.ield?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. v b3w+l4iiw(n: cm9kr What is the magnitude of the electric field 5.0 cm frrmcib+ nl3kw( iw9 :4vom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is thdz.)rck6 y*i8hr3hz:k(bdtz e electric f :3z k*dbh yztc (r)6rih.zk8dield 6.0 cm from the center of the sphere?