State the law of conservation omnkk8p lpk 07o;:,nke dbt nzij9hp - *.7w-rif electric charge.

  Is it possible for two negative charg :kobjuj u5:-v.flk8 des to attract each other?

  Is it possible for a positive and a negative charge to attract each oj/vhmn) o2dbk2v4 q/lther?

  A glass rod is rubbed with a piece of silk. l0: onmwngrc(w qe.* 3dfb1+d During the process the glass rod acquires a positive chargelwo r3eddgcw(nnf.10 b +q:m* and the silk

  A proton carries a

  The model of the atom3d6vcsc s60 (bj:kfq o shows a

  A neutral atom always hasna+yh7fx3fo bf bq d5:r2,rl7ag/ . gf

  An atom has more electrons) ;nt;s4*xrj non6:knkmi j5t than protons. The atom is

  Materials in which the electyc:*8k*tvv 2kg:hag trons are bound very tightly to the nuclei are referred8y2h v:g tgtk*vck *:a to as

  Materials in which the electrons3g6rs k zj8gtr.r )q+la:7yu-a1dup d are bound very loosely to the nuclei and can move about freely within the material are referred tsdura.3zl8k ) p1 dg6:7ayjrtugr-+qo as

  A negatively charged rod is broudzu- l49xjdl 8jng 355/ee b8xrniq6 yght near one end of an uncharged metal bar. The end of the metady x jr j54l8ned/n6x-e39 ui5gq8blzl bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, ayq;w szcxr*da3 b+ :zrfvgh m40n-) 1mnd sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which -nfbm;w 1dq h+r z*3sza0vyx c4:gr)m statement is correct?

  How can a negatively charged rod charge an el g9 9,2 kqqyl+kgb)ef;x po)hvectroscope positively?

  An originally neutral electroscope is b;pme0dn p 8vwnx(n) 6nriefly touched with a positively charged gla8(xmpvn ;n60den )pw nss rod. The electroscope

  An originally neutral electroscop xya40 8ueu3 vd e//hifzpl3:we is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, t0ywfzx8ep3h/ad3u /iu:le 4v he electroscope

  A positive object touches a neutral electr/ zxy wqk7n8 bt-w6*q ceu8cu,v.dk4 ooscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens tq ,/wut*ck7xovu d4-y68kz 8n cqbwe. o the leaves?

  A large negatively charged object is plaz;mhnc ,vks 6-db-.z cced 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 by the first ball, strikes the first ball, and stops. The first ball rolls forward, but doh;.-vd- zm s,ncc 6kzbes 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 tk s:3kij /bu0. vdvk2dhe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge q 4w 5na/45uy wpeuu(wis larger in magnitude than 4q wuwn(5a4 wu5p/uey the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed ndii,nr ey ;rg(-ajw 0:ri2op* ear each other on an insula n*2i-dagipiyj;r:(0 rr,ow eted table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain xi,ja9 t),5 ohpp,d mzforce. If the charges on both objects are doubled wxpadz,)p,5 ,tomhji9 ith no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractil )ta4z2 0negrve forces of F on each other. If the charges are separated by a distance ofezag42)nr t0l d/3, what are the new mutual forces?

  Two charged objects attract each other4ajz1elm5enz 71; cxd tn*h -c with a force F. What happens to the force between them if one charge is doubled, the o t nezzx1-5*eld7a41hnmc jc;ther 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 pro/q,w qbucq;gex-ij 4,d7y8b; w ;awygton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next te uj;bqibgg c d y,/w;,-84qxqaw;y7w o the first electron?

  An electron and a proton a9av, ek: 3ytylvuhd9i: ,v qom2g*-qdre separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placedt 99du,-l:h qoa,m *vyykq i 2:g3dvev next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whayuh- emosm 6:c7w, 0mit happens to the size of the force on the proton if the electron is moved 0.50 m closer to the phm:,mocm6e yu0i s7 -wroton?

  A point charge of +Q is placed at they*-niy+k9oul0f d ; x1*oasdqt(a ci( 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 thxa1qu+ ooy0f-ncsa(i;i lykt**9 ( dd e 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 equilate9 f h/ x* )azm+dmfmid8l6q(vuw7h+hc ral triangle. When a second charge of +Q is placed at one of the triangle's vertice+ mv)f 9z/du xqdmcaiw h+6hh*fm8( l7s, 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 vecto1;c;bq qyc1//tx. qox cb ub7u (s6uhzr?

  At twice the distance from a point charge, the stregy m0r njbw r7 mm+ ih/6rhu+a,z 7vk3z5gs9f1ngth of the electric field

  Is it possible to have a zero electric field value between a negk; hq b8jvzu,noe3im14qlrx 0 5+t,vvative and positive charge along the line joining ,+v01ib ;vxmqtz le nq8jovu45h3r, kthe two charges?

  Is it possible to have a zero electric field value ytuo,6ae4o gf. lx0; ebetween two positive charges alongt40,;xea u yol.ge6of the line joining the two charges?

  Electric field lines near psitive point charqklr: 9dwmi i 2c68xx,ye37w r+f;4uh n8pofs ges

  The electric field shp i1ag+g,z2w jtlql.hw( e*.mown

  Can electric field lines iv9s7zaln p*2.-w cx5z, nuq)tv pz rt/ntersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifo7) 2nc0uu a/h:i(c8ab do lxoorm electric field. Give a statement concerni 8i()o:d cchun b27oaoaux0l/ ng the electric field in the block's interior.

  If a solid metal sphere 5v69fh: tdwwc8p6 rs:89uo )rrfjtlvand a hollow metal sphere of equal diameters are each givljdrp: 6:wr9v vs)thufw86 9ft 5 rco8en the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a reg ( kr v8e6rfmivvuz--9j4s m-gion where a uniform electric field is directed straight upward. What can bemg8 -6vv9r-f sj um eik4(vr-z said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an x7 mj /;uof70knlyn d6electric charge

  A positive point charge is enclosed in a hollow metallk2ijt o3vg( o3ic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a3o(gj3tovk2 i point directly above the hollow sphere has

State three properties of c+ hx-ic(cml 5bonductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron imf/ w/ /s/ljhddw)r- ts $e = -1.6 \times 10^{-19} \; C$. 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 protons than ;pvdg ag /gg5 v8i3+lvelectrons does this pieceg3 d8gg5avilpvg;/ v+ of plastic have?

  What is the charge on 1 k sb4vq;;uerfe lj 5(u)g of protons?

  An atomic nucleus has a chargjaaunm*e(43den0/ g xe 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 -4s4pk2k x (vw9i.0 mC, respectively. What is the magnitu4kspikwx( v29 de of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, aegei*-ol d39q/r9uf f nd the force between them is 1.0 N. What is the magnitude of 9-u9 efe3g qiof/d*lrthe second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are theyso+(b8d sre j5y+3sre?

  The force between a ia,/h fimkw.8s. k tb6$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initi fid ,l+a:.izzdbn-yqb5t2+ially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new sepzlb y5n-d+ dqz.:af2+ii ,tbi aration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on th,u-gm7 8xdmqb e 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 mag7mg ,m8d-xbq unitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges lj7d5g96 ef5yiofq)wz5g m 5ware placed on the x-axis. 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 charg55yz g)jffq5o wgm6 l9iwd 5e7e at the origin?

  Three point charges are locat9g- 4-d/ey-uol zey// kto cnled 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 magnig-kd9 /4/llyzuen -oo et /yc-tude of the force on the 3.00-mC charge?

  A point charge of +Q ie7 ehi :9ocos:w dm *+0qu7ncj1mjmq/s 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 acdwnhq e+ 1ijje:0q*moc9m7:7mo/s ucts 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, 5f la-t kwnn;70); Q2 = -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 the 5.0 nC chargfn;a-7l nkw 5te?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 m 0bzug0 sa+t,nC is at (0, 0). What is the direction of th0m zt0+,sbua ge net force on the 5.0 nC charge?

  Three identical charges ofpysdgr0m2 mf,8 , bmg8 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. rmfg,28dm0,b pg8ym sWhat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, wh5y59uvyxvg 7ln 0wdtu+i p*:/+urmr oich are separated by 3.0 m. At what point, on a line o5v+r+y:5u/x7n t0y9muvu rdlgw* pibetween the two 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 origp1d,agvoou5/ p6q m( lin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed slao5g /v 1pq,6p uomd(o the net force on it is zero?

  Charge +2q is placed at the origin and cha :e(6ofj5b ,2cncp f2-otpkag rge -q is placed at x = 2a. Where can a third positive charge +q be placed so that tong,p2bj6a:2 kpf-o (c 5fce the force on it is zero?

  A copper penny has a mass of 3.0 g. 7abhg 1e5jd-q 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 ay:8nn aln 70mgged 5m5ttraction of a fixed proton some distan5a5m8g0nnmen:y7gd l ce above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commonk 2tnzna dd glw.43x9: point by nonconducting threads which are 30 cm long. Both are given identical charges, andk4.nxn29:dgld w3 atz 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 aa0wlu *cuiw-lld((l1v - o4ot charge of +40e. What is the magnitude of the electric field at a distance woluo l4( wvlc-1* iul0(- tdaof 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distanceqo) )wmvquz2o*k9 4eu of 1.50 m from a 50.0-nC charge9kq*ewuzq2)uvo m o4) ?

  A 5.0-C charge is 10 m from a small test ch * ud-c6ib rx(b9jvvm5arge. What is the magnitude of the electric field at the location of the test ch i5u9b-xrv dbv6cm* j(arge?

  A 5.0-C charge is 10 m from a sma.)l/a0n mm.zhe:c6fu6 vrcnw ll test charge. What is the direction of the el rnv:zlm cn a0h.6/ewu) .cm6fectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituv( )-kj.g (9x5dxiws :y* s/bcgvxyscde of the force experienced by a )bg.(vys-xc(x 5*y/ d9kssg cxvw ij: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 separated by a distance of32v5+ut ::z glv7xc lett2j eg 4.0 m. What is the electric field at a point mi:tugxt: vlct+52v z 7jgl32eedway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter s(m9h0c50il lu*rby7,y gbd) ytlf cw 2tick and a -4.0 mC charge is placed at the 50 cm marku 2h(cli)75*dw rl y9,by mlygc0tf0b. 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 ae57 :fvm1 wp8vpu4tvh,6f yzr -4.0 mC charge is placed at the e4v5y7,vhp m6p8w :1 tzufrfv 50 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 mC are placed a -3h:jj. tu np(w:t+mp+zb hirt x = 0 and x = 0.20 m. What isb(m itr::j.zh3t-+nj +w u hpp the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Thep dauk,vx u*7zoi// g/ last corner is occupied by a -3.0 mC charge. Find the electric field at the center of th *vg aki,xpz 7d/u//uoe square.

  Consider a square which is 1.0 m on a side. Charges are placed at tkxpv(nb.d w 0:he 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). Whaxpv0 k.nb d(:wt 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 i4c5v6b y yqj:qn a uniform electricjqqc64 5yv b:y field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass 1g9j yq7qme j*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 ano6)s m+)sesmly, sb8isxo,xom)w c(* electric field of 6000 N/C pointing downward. What charge must be plsmo*oe, +sx)8mxw 6) b sysi)c(,smolaced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC ;oyj-ftdjg*q+/4ry fa*32;l aq kpdr. The ball is placed inside a uniformq;f ;p rogdata+ly 3 f*/4j- d*qr2ykj electric field, and is suspended against 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.cz 2 9*dqxay1tg2y:fd0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfacazdtc1 2d92 q:xf ygy*e?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC.7m a8- bu4hbze What is the electric field 6.0 cm from thea ue-m8b hbz47 center of the sphere?