State the law of conservation of electriryt01md j5u kl;r+z5zc charge.

  Is it possible for two negative charges to attract each othec,51zex3ms wnkp,i ge:uw/ 5 jr?

  Is it possible for a positive andz ,6rhg5/t7y 0funlq*,iz jlj a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass uux3loi 98z+ i:zm69i7 foyznxj 5oc;rod acqnzi: 5f8jclzom99ii6xo;ou7yx z+u3 uires a positive charge and the silk

  A proton carries a

  The model of the atom shows ah vt;3:6dzybz:fy hx07vm s 9k

  A neutral atom always hagu p-6xng--(np)d-ddj,c qmo)f6 mfis

  An atom has more electrons than ks) ;67 ebflbr 5mmg5sn ns-7n4kw1 ogprotons. The atom is

  Materials in which the electrons are bound very tightly to thft4z 87too6 i;rl6lxte nuclei are referred 66t fz78ixlt t; rolo4to as

  Materials in which the electrons are bound very loosely to the nuclei and can *:u3 +5jjrqkff sj* mqmove about freely within the material are referred *:fk5 s*fuq 3 +mjjqrjto as

  A negatively charged rod is brought1h;o qyn*ne.r/u ves-hqb 0+z near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be che*o/v.y-+e uqnns1 zr0h ;qhbarged

  Sphere A carries a net positive charge,u4c j3u o:cx kdtb+:6mgc1uk40sl;lc and sphere B is neutral. They are placedcjtck 6+cl4lb0s:mxu3d ;gk41uu oc: 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 electroscope positivelasd k k,vgwf9)1omjke0 9v j+1y?

  An originally neutral electroscope 0dq4q hl2jb x9ezl0q, is briefly touched with a positively charged glass rod. The electrosco,q 9e4dzxq0j0qb lh l2pe

  An originally neutral electroscope is grounded briefly while a positively chargp :/rmzd05-wleaik x ukkz: k7g /9tw3ed glass rod is held near it. After the gluxe l p/-79/ wt:zkm awr 50k3kizg:dkass rod is removed, the electroscope

  A positive object touches a neutih i,mcclno-4w/qpn:5 .oc4wral electroscope, and the leaves separate. Then a negative object is brought near theq/lnn4.4 coh-i:,wowp 5micc electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objectl(jg m g/ls/*jv id9sl6am9f8 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 path followed by the first ball, strikes the first ball, and stops. The first ball rolls forwarfl 8m a/ll/jv9mg* sji6s( 9gdd, 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 mn7)whr3;b26r1 jhj6mp4vv3l rls yf Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge i b9 c;zx0g,zuw,gybh9koxs( r4 zkj7 4s larger in magnitudez ,cugk9k0o(g;xwy,z94 bjrh7 sbzx 4 than the second charge.

  Sphere A carries a net charge and sphere B is neutralb6n+d )xwlaf e3x3he:1ekb 1o. They are placed near each other on an insulated table3a dl3b1:bh)e6eo e n1k+xxfw. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges one;h8-w h +s9/gkx sveb+; pbxi both objects are doubled with no change in separatvxs/w p9sb8;e-hex++gbh i;kion, the force between them

  Two charges are separated by a distance d and93b i ebjom ./(2keprtv-igg3 exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual fokv3m 9go3.igbr p(et-ibj2e/ rces?

  Two charged objects attract each other with a force uwg0p 4t/hy ,rF. What happens to the force between them if one charge is doubled, the other ch4,p yhu0/r wgtarge 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 gb *)mm9xybcq.ip, 9 clp-o-bto the magnitude of the force on the proton if a second electron is placed next to the f99b) mboyq- ,pxc-pb.cgl*mi irst electron?

  An electron and a pr 4iav:y h219aec jh/0gsnem tq+y8rq 0oton are 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 placedhj1tr8mee q4 yhci0 9a+g:2qyv0/san next to the proton?

  An electron and a proton are separated by a dist 79e)s9bvf pblvx ,,1heo0;/c tctq wmance of 1.0 m. What happens to the size of the force on the proton if the electron is move/v1et9eqc pb;,9x,tm)ws h0o7 lfbv cd 0.50 m closer to the proton?

  A point charge of +Q is placed at the ceny.0l5 qd f1hfpter 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 chargelyq.5 1p 0hdff at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. su:hy5-:m jih When a 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 cha-:s h5 iuh:jmyrge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vector?.i f-qe75zd fc

  At twice the distance from a point charge, the strength kjrvb da:su1332yt 6w9zmg,h of the electric field

  Is it possible to have a zero electric fih)n-4 pho w-rs0qycqvam)w ( 2tu1v9 zeld value between a negative and positive charge along the line joining tmq-0qo ww )uvryh29hp)s- zn act(v14he two charges?

  Is it possible to have a zero electric field value between two positive cha ze7- zz(9lcquc8vv k/r; f1lgrges along the line joining the two chargeslv uz/ (fgzrz evk89q;7-1c cl?

  Electric field lines near psitive pointuonzsv+6clhr 0pf 0nn. )ue00 charges

  The electric field shlag s)8b.5 qagown

  Can electric field lines inzqtc/ a g; j:7(ktg(qutersect in free space?

  A solid block of metal in electrostatic equilibdfe0d-fdr z2t+5dam( rium is placed in a uniform electric field. Give a statement concernif d2m -e0 dadtdf5(rz+ng the electric field in the block's interior.

  If a solid metal sph0 o*;jnj8(fxy gk5 af.-ft lpyere and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway5- jxty o8*pkaylg;0(fnjf. f between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where ax l4 uo1 s2nsiz.l9zet/kt) 9w uniform electric field is directed sisu.z 1 lt x924k9os lezw/)nttraight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibr-1lkh7uact/ls26-; bc ql poc ium near an electric charge

  A positive point charge is0rgkw4x oo1(walu0jd 7be2 :c enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere wcd:0 4g1ljxk(w0 uao2ro7be has

State three properties of conductors in static equilif,h wspflgio79, 1c6w brium.

State Gauss's law.

  The charge carried by one electron ed+ug9i0t qq6 nn;l d -uwg, 21/uxtvsis $e = -1.6 \times 10^{-19} \; C$. 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 f/1;/nqqv nc vthan electrons does this piece of plast/fqvnv ;n1qc /ic have?

  What is the charge on 1 kg scl 4xtgmi,wdsf :7yh7sue au(pf77a)1u -t 2of protons?

  An atomic nucleus has a 9fd+:8 qy vgrsd 6e9eg+yw eh8 ,uyp/ccharge 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 ofcg r/6 7ir9jcamrfn, 4 2.0 and -4.0 mC, respectively.9ar7mcr,4/f nci6gj r What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwe:a ity bqa2z *ej8:qbi e(24khen them is 1.0 N. What*2b:q(yzija h:eeqb 4k28t ia is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How fc,a6 ( rqq1dslar apart are they?

  The force between a xgitb+r85zt 8$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expe9j i)pr 2 2ysdr+ff,/ rs)cjlnrience a 1.0-N force. If they are moved to a new separation of 8.0 cm, r2)/ ri ynj,l r2) sdpjsc+9ffwhat is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. T-ranmg zy 6ztw 22 .d)qbxq4s-he first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm ma 2twzg- zn) mrx-bq6yqs a2.d4rk. 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 charge of +2.04wzp.cnye xst+tw:m, w5 b*,f 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 magnitudn swc :wwfm,z5t+y x*eb t4.,pe and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the g f15hrf udt6.q2vo20 n;e eqofollowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 01 f2. ouod ehgq6q2n e5vr;tfmC 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 square, and a second poina*) t1vtqwe,hf*6v na t charge of -Q 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 thatt),t v 6navafh1w**eq 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 is n*5)h ip1f mvp.4io (drclm7lat 5 4 il17r*.cop)vl mi hdnmpf((0, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC ifc:ktgc)y anh ;(k4 36cnf,o2 matsd2s at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the dimf;6oyadcs tna24 f tkgh3 ),c(n2:k crection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC di :qlkcd76,i/ 0p vjmare placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the el l/cvmdq:p, j7i6i kd0ectrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which arewpogsjfb qx/ay3f*8fg:+j7 ; separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force actin:w/+8pfjafsf7;gj* yb xgq3 o g on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is amub9 kbr n3)b*t x = 4.0 m. Where on the x-axis can a third ch)ub 9k brnb*3marge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chargiy*-n b zc*k/ ni6,.kgdf a:kne -q is placed at x = 2a. Where can a third positive chaf* kdc- 6.ngi /ik,* :zbankynrge +q be placed so that the force on it is zero?

  A copper penny has a gg/w z/z7u- kqx8gh;kho1x. sz 8(h xfmass 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 against the force of wyx:;yu1 cad0 gravity by the attraction of a fixed proton way :xucd; y01some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hungj jsi1sv+ l70i from a common point by nonconducting threads which are 30 cm long. Both j+il70 1v jissare given identical charges, and 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 a charge of +e 2;o2 s,ljv cbjw6d8l40e. What is the magnitude of the electric field at s6j2 ;,2ll8cj debvwoa distance of 1.0 m from the nucleus?

  What are the magnitude and hhi*o c0s.zgr j. wx(+direction of the electric field at a distance of 1.50 m from a 50.0-s.cwzh r*ojhg.0x(i+ nC charge?

  A 5.0-C charge is 10 m from a small t42*qq s )rm/.qursk74j koimgest charge. What is the magnitude of the electric field at the location ofjkq4 ruk7s2g/qi. msoq m* r)4 the test charge?

  A 5.0-C charge is 10 m from a smaimx6 rt1 vy*:mll test charge. What is the direction of the ele*rxv1 mtmyi: 6ctric field?

  A 5.0-C charge is 10 m from a smyupve .: v3t. 7i* bwi+x7pinmall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at th biniiv.3:x+7 u *py.e tmvpw7e location of the test charge?

  Two point charges each ( as;gm-psfu3 have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two ch (fams3-;u pgsarges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and wwua/kyd:. k 5.osweu j-66 xra -4.0 mC charge isawd6/ oeyj6x. sw:-w ku rk.u5 placed 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 stic q;g( yr2(932bcry/sbdt ftbcxiw7/ dk and a -4.0 mC charge c ;ydbqbgt (c2d2rx 3by w/sf7/t9i r(is placed at the 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 c(v6)wph ;y psat x = 0 and x = 0.20 m. What is the v;cs y6w )(pphmagnitude of the electric field at the point midway between them?

  Three 3.0 mC charges an1gyv t:4gw8 u(h3wgxre at the three corners of a square of side 0.50 m. The last corner is ou8gy4hg wv(x t1w g3:nccupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square wh sb;kmk*9ifwof+l*;wcek ;q6ich is 1.0 m 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 oewi9m+k 6w ;kffkl ;*b*c;sq (0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge o6x*, wd 4dt zbicoat)(f 5.0 mC when it is placed in a uniform electro64dw,axzit tbd*) c(ic field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 xgw/4*v(o -ligj7uy j 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 fieldl2mxha0o(ef0a1/f ): h h cggd of 6000 N/C pointing downward. What charge must be place a c:2dole h(fh0)ahf01 xgm/gd on the ball for it to be suspended?

  A foam ball of mass 0be1rxj/j.-m bw4z:ze 8cf un*.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravumnjxw4- .1 zc zjf/eeb *b:r8ity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a zsgfu:vr xz,a)zz4d69f( sv-charge of +2.0 mC. What is the magnitude of thev z9 6u:z4rfz zdva g-()fsx,s electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What *nu9 gbk:xq1svb+6qitw b x/1 is the electric field 6.0 cm from the center of the sbtu x 6v+bxgswi19q n b:1*k/qphere?