State the law of conservation of elef2sfowadp g h1)8r2:,ut 6evuctric charge.

  Is it possible for t yshy c+ 7.yn+ao)b/zewo negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract ebv) p 801oynt*7tp vdgach other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod ac3d l;zg ov2vfb 62tb)equires a povo6z2fb;vd)l bt2 g3e sitive charge and the silk

  A proton carries a

  The model of the atom7c l;;ok2cw p;j dcjf+ shows a

  A neutral atom always xdm- tpz5 g8gb7 m.*r j*ss8 ki2cmhz)has

  An atom has more electrons than protowcd)sn :n; du.ecy+5u ns. The atom is

  Materials in which the electrons are bound very tightly to ;*cis xhi6 e;zt(i;wu the nuclei are referred ;(s 6xiiiht* z;uwe c;to as

  Materials in which the electrons are bou5v- cwwoq0, qo 4qt4nbnd very loosely to the nuclei and can move about freely within the material are referre ovt-cw0nqo,45wbq4q d to as

  A negatively charged rod is brought near d,lo3l, bss4 8/kkgzbqm9 ;0seutcm7one end of an uncharged metal bar. The end of the metal bar farthestdu49 0szlto ql; , bs/mmk3cbse7g8, k from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B iy ae htt*tj3av /g(kngw 62d86s neutral. They are placed near each other on ant eth wv8d(36yk2j*tgaa6 /ng insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively cha(t f 44qy weadfv0*o*beh*l t8rged rod charge an electroscope positively?

  An originally neutral electroscope is brieflyuxtys fhet- qq-1fig)+f35 s. touched with a positively charged glass rod. ht i1s5s3 q-eu+.)f -yxtfqgf The electroscope

  An originally neutral electroscope is gr1y v4+,j7rp 0atxac8n mgnp/dounded briefly while a positively charged glass rod is held near it. rp gpn7t0dca 1/,y va4j+8nmxAfter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. T9x q5o:j9ihe 9 .mtuzwhen a negative object is brought near the electrosco:9uhi 5eqj9zwmt9x .ope, but does not touch it. What happens to the leaves?

  A large negatively charged gtu1( odd9 9gjobject is 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 pat(gt1g9djd9u o h followed 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 Cyy(dwd b *yqltt9;a443oaj7j oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separadb/j qn.c*ke -ted by a distance d. The first charge is larger in magnitude than tb* cqn-de j/k.he second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed n5e z.;l*g1vuu vbm(umx moe*5ear each other on an insulated tablum5. e(v5xu;mv1l*e ozmb *u ge. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the char/h v7t( 07: )yxhjrfq*houi asges on both objects areya(/xq: 0h* v rsftuh 7)ojh7i doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutuabdtbxja3z2 a q(,f4 z0l attractive forces of F on each other. If the charges are separated by a distance of d4x jbt,fbaqa3dzz 20(/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens dl/;zfj.grk5f b y2hbu(bk;5to the force between them if one charge is doubled, the other charge is tripled, and the separation distance betweeb5ubf gh/;.(5jk 2l fzbrydk;n 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 happee( yrmvy/v3:bns to the magnitude of the force on the proton if a second electron is placed next to the first v3m(vebr/: yy electron?

  An electron and a proton are separated by a dis ve7jvfx7x1i- (lb, rutance of 1.0 m. What happens to the magnitude of the force on the first elee, lvxij( 7f1uvbr-7xctron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.p pj2q-ng8vlhn7 3y7c0 m. What happens to the size of tg nvql- n2y77hp jp8c3he force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placxb+ ebpk u/6x5by07cq cf.u:k ed 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 06 bux /cbkybxk.+e:pc5u 7fqforce 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. z /qe eu57 3ev(p,kfjuWhen a second charge of +Q is placed at one of thee (qz7,pe/ekuj 53vfu 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 nouu:2to+ i,gp6 9conn cab j i*1jlj,a6t a vector?

  At twice the distance from a point charge, the stj /sa9ntq:mzh)dbd20wx(1 fztsz q9, 4sr6dl rength of the electric field

  Is it possible to have a zero electric fis 0qr 7 n)b--zgg v*lk9;umhraeld value between a negative and positive charge along the line joining the t7s u)l9rgk0*;v a--m hgqzrbnwo charges?

  Is it possible to have a zero electric field value bexw q -f5 04dhse5a- eziqh+ef4tween two positive charges along the line joining the ti5h0 -af d- f44eew+e5xhqqz swo charges?

  Electric field lines near ui d zev0j)o4w/9 rnvs7hlz. 0psitive point charges

  The electric field showkf *gvh 4td2h3n

  Can electric field lines intersect in free space?a6msz5sx:p++gfs 3z b v 7l.fu

  A solid block of metal in electrostatic equilibrium is placed in a unifo; t2cpoi3dm0l rm electric field. Give a statement concerning the electric;2mld0 copit 3 field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters kd;3 eyb.dun/v f-gmn3oco3 +o (( vlzare each given the same ;ovdl(3omynfud3 gc.-/k3o v z+nb(e charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden l 31:eo upg 9n/ lyfbg0cx1sb)table in a region where a uniform electric field is directed straight upward. Wunf0/sl)byog1 9bg3ep l c1:x hat can be said concerning the charge on the block's top surface?

  If a conductor is invv *bgya j,*noh1. 2oy electrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere u)5;7dahx7jjml ,7hepcl zw+ that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above tj;,j)m7 5 7pc whaxlehl 7uz+dhe hollow sphere has

State three properties of conduckz(vqch4c8 a /i8tz(dtors in static equilibrium.

State Gauss's law.

  The charge carried by one uhtew3)k3bo. electron 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 -hi5ip4ih1u-m+9y v :gr dftymore protons than electrons does this piech4uh9+yirv-mt- 51y: fd g piie of plastic have?

  What is the charge on 1 kg of protons;8ccp dga+y4x-ch++r jeris 3?

  An atomic nucleus havc39+ sb3uofm s a charge 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 g6uk t,w8ynbulutjy *)xdlgl:4;j:6 charge values of 2.0 and -4.0 mC, respectively. What is t 8:u ud;g:wjy6t,ybnjllg)ul k*46xthe magnitude of the electric force between them?

  A 1.0-C charge is 15 m fra8eiprnh4:p 7n 8cfn 4om a second charge, and the force between them is 1.0 N. What is the magnitude of the e7 :cp4r h4n afi88npnsecond charge?

  Two 1.0-C charges have a force betweenxtg 5g td+1g4a them of 1.0 N. How far apart are they?

  The force between a 3a27vh c e-mln$30 \; mC$ 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-h 8dry19b+blaN force. If they are moved to a new separatl8y1ra 9+hbbdion 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 zx--i21qqjobz/ux w r v58w *tfirst 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 acts on the chaovbqxqz-/wi8 5w-ru21*t j x zrge at the origin?

  Three point charges are place( oa a2ao li* 6+/g).gjlswujod on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at g gjl)(i/ajo6*l.owas2o +a ux = 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 at28mf qpnk7,)rjgt r.n x = 1.00 m; Q2 =.qtn8,krn rg7j)2 fm p 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 charge?

  A point charge of +Q is placed at the center of a snxr *ua;) djrc0q8hzv7k 3o q89qqmg-quare, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrosq-mqqc*n kag x )v8d390z8q;7ouhj rrtatic 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 = -uc/nyly ; l3:r1.0 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 3 n; :llycryu/5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 =+ n hc2 6qc+92nagf.njluwlo 8 -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 j2f 9wc8l ncg+n.+ah nuq6 2locharge?

  Three identical charges of 3.0 mC are placed at thu5*tvzt+kwm2p 2l g:re vertices of an equilateral triangle which measures 30 cm on aglz25rk2: +m v* wuttp 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 .7 hdvoqsp s*3separated by 3.0 m. At what point, on a line betwp73svhs. qdo* een 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 origin and a +9.0-C charge is at x = 4.0 m. Where,faboz, c3 8 s0(ifedq on the x-axis can a th,fq0 icszo(f, ed3ab8 ird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at u;j. oxv et.or*e1+;l; zf)s*qn hjxex = 2a. Where can a third positive charge +q be placed so that the force on it is j q1z v+e*r;jl. nx*.sfeh;oxt e;ou)zero?

  A copper penny has a mass of 3.0 g. A total oda f sz5 -lbwco1.cmcym.:5 (nf $4.0 \times 10^{12} \; electrons$ 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 attraction ofxe4ow(a4r y.l a fixed protona ylr.x 4eo(w4 some distance above it. How far above the electron is the proton?

  Two 0.20-g metal sph8g 2tf9.(hdq( x5: 9(txxkp wryztyq zeres are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repu59xzgdh8x(tpt 9qf w((x .qy z 2ytk:rlsion 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 ykf 4o xjudrp(+mwp*7qq,3p2 magnitude of the electric field at a distance of rqj opd4p3m,+x pwu fqk(27y*1.0 m from the nucleus?

  What are the magnitude and direction of the electric f/ oznvx-3 3.jjfg o7umield at a distance of 1.50 m from a 50.0-nC charge?j x.ognf jo uz33v/m-7

  A 5.0-C charge is 10 m from a small test c l+ .0yby4m-nlso/ikh harge. What is the magnitude of the electric field at the location of the bmyys+ 04o.knl /ilh-test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dww,5fh apko/;1 72hffhse 0dj irection of the electric fifwh h op/e,01kw2ds7 j;fhf5a eld?

  A 5.0-C charge is 10 m from a small test charge. What is the ma uulprop2 w3 q)-j- fno/lv2f)gnitude of the force experienced by a 1.0 nC charge placed at the location of t/qp3vfowonj2plf2-r - )u l) uhe test charge?

  Two point charges each have a value of 3.0 C and are separated by a distctmp* /q5:e wvenps),2ias3p ance of 4.0 m. What is the electric field at ispwm3qvan:2 sep5 c)*tp/e, 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 mC*iwx-umh +yrzum39vp9;)c wt charge is placed at the 50 cm mark. Whaw+ w p3h)cmytir 9mz-;vu9ux*t 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 mC c .r8lk;na3giz*laq( iharge is placed at the 50 cm mark. At what point on a line joining the two charges is the e8il*.; a(3aiqrk ng zllectric field zero?

  Two point charges of +3.0 m x i,s*r(mi u.ey:unk2C and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the po,mk* (:n.ru2 ue isyixint midway between them?

  Three 3.0 mC charges are at the three corners of a square ofjj1x4ig8 a op; side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at t p8j;i4gao1xjhe center of the square.

  Consider a square which is 1.0 m on a side. Cha8c5kx f2;fmb vrges 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 av x5f;2bck8mf t (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 chaj1 c,wt;:nm zgrge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this e:zn m1cwgjt;,lectric field?

  A particle with a chara a c2thy5s6eoh-rwu8/ x 7q0xrsjr9; ge 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 electric field of 6000 Ns9 51y(c ilsno/C pointing downward. What chargessi9lc(51 oy n must be placed on the ball for it to be suspended?

  A foam ball of mass 0.1b n0ozt4rjp/ caf-*t57 a,snn50 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and trb a0cpnj7stonf*,az4/ n5 -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 +2.0 mC. What is the mp3 2 l8ycuhxh0skv9j9agnitude of the electric field 5.0 cm from thxh39p vh 9yjlcu08s2 ke sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mCr ea8g(01maj(duui t+2j+oe j . What is the electric field 6.0 cm from the center of the2(a0do+jjt(a m+u1ue 8i grje sphere?