State the law of conservation oc irg7m f64up y8z3xy2f electric charge.

  Is it possible for two negative charges to attract each otherfkia9btd48s0e z6jsu6k-r x:?

  Is it possible for a positive and a nega;qre o 1aul ig8s*gg88tive charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the pka)c(bh-3f)/u5w xvqs- otwj rocess the glass rod acquires a positive charg(a3 schu 5-vwxo-qkt))f bw/je and the silk

  A proton carries a

  The model of the atom ((klza 5rznd;onvk.7 shows a

  A neutral atom always has yol+wqj sx2*8

  An atom has more electr 5 eip6dtbx2x8 fpz,,xons than protons. The atom is

  Materials in which the electrons are bound very tssl.)oed1;goru 5i y/ightly to the nuclei are referred to as;s.oir5l1 )uso/dye g

  Materials in which the electrons are bound very loosely to ttjp2c 5c 0w0wwhe nuclei and can move abou52cc0w0 p wjtwt freely within the material are referred to as

  A negatively charged rod azvu/sjbsm4 k/f/ l 7r( gi,u+is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rodmf 4gzuj/il b/sr +,sav(/ku7 will be charged

  Sphere A carries a net positive charge, and sphere B is neutral.eivi7wl hj, j19pn azgc (2((t6l)i9h jnu tl* They are placed near each other on an insulated table. j(7l,9 nca2e z nw(vhtl p1uj9(l6iihtg*i) jSphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively ,oua8ojt( 9-ysuywv8charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touchx,ozo p k+y ti:+f/rx.ed with a positively charged glass rkp,+ i/ +to yfrox:z.xod. The electroscope

  An originally neutral electroscope is grounded brie7y6av -9cqbi26w zrmufly while a positively charged glass rod is held near it. After the glass rod is removed, the electro2b yav9i6u-q6 m7wzr cscope

  A positive object touches a neutral electr p3jam1+ 1kk2g.cc t+q yywdu4oscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leavespmt g.ck2w dqykcu ++141 aj3y?

  A large negatively charged object is placed on an insulated table. A neutral( 4sd:dx hau 6td3f8ymsri5;c 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 touch the negative object. At no time do;dsi r8xs(5t4m 3 h6dyad: fcues either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb celuhy g3-km4 xjd/ 3vj0el)k;onstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largeikg.;z4.mrm:f2)mue w lrs ;dr in magnitude than the second charge.usr.imwd; .:k4 gfel;z )m mr2

  Sphere A carries a net charge and sphere B is neutral. b;n h,z klnya5t6 )xl. They are placed near each65kn ;,bltzhx. l)nay other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a cer f7i0 q+-rt*tq/s;*lfcaf hqjtain force. If the charges on both objects are doublesf*qti qt hac+ *qjf-r;0/7 fld with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attraccco:,bb; , b36hff:zf krqg s*tive forces of F on each other. If the chargeg;s,zbh*q,6 b3:k rccff:obfs are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attra9 j m 3a.pq:.kln+ihkhct each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, ah inj:l ..+k akpm3hq9nd 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 ofggz vx:q ;rzglz6).h x0fm, c5of2ecu+.nr 2t 1.0 m. What happens to the magnitude of the force on the proton if a 5xugvm+eh2 r n r:q;z.g l cxof2tzz.0)g6c,fsecond electron is placed next to the first electron?

  An electron and a proton ,st71p6h2khw,q*caho 2 am az are separated by a distance of 1.0 m. What happens to the magnitude of the force on the1kzwt*67 aa,,s2o2 phcahqm h 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 y* b ;gy*y9l;9 zvpxwqm. What happens to the size ofywy 9q*lvg zy*b;;9p x the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is plyejw w)yt3w c.+o. ;aeaced 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 c +t ewaeoc.w 3);wyyj.enter of the square?

  A point charge of +Q is placed at the .c88pd5 mcpt zcentroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices,8dm8.pz 5 pctc 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 followi0u r7 hq2y-/:i8ab rjo;hddvb ng is not a vector?

  At twice the distance from a point charge, the strengthva,cbx m*tm 0 x;g v1w2ssfx f64oek+: of the electric field

  Is it possible to have a zero electric field value between a7 zf.nzcxydf4)jp1 0u negative and positive charge along the line joining the two charge 4dzzpujc1 f7n .)fxy0s?

  Is it possible to have a zero electric fie-syfal.h exx ld,zgx:d38f (- ld value between two positive charges along td8-xx. llx( ad-e:,z sfyh gf3he line joining the two charges?

  Electric field lines near psitive pt pw+d76c 7obgoint charges

  The electric field shown n y:b x,bj;c0c

  Can electric field lines intersect in free , dn (g: e8knx+n)jnarspace?

  A solid block of metalvya ha8: 8:rodt1xvl ,anu4;i in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the ele, v18:4aoaual:d;v ynitx 8 rhctric field in the block's interior.

  If a solid metal sphere and a hollow mer;a+c h+ vkuqqx;n)g(q72tz otal sphere of equal diameters are each given the same charge, the electric field (E) mi+ q 2(c7vz);a;xq t+unh qgrkodway between the center and the surface is

  A cubic block of aluminum rests on a wooden ta9 tu6elwl (q molq.h/9-l,ng able in a region where a uniform electric field is directed straight upward. What n lotwehguall, /q99.m( q6l -can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chatdro)ony pt.so4n8 f5yuxg005 m;-ohrge

  A positive point charge is enclosed in a hollow metallic sphere that is grounded)z2emuoo ;r )h0r gie5. As compared to the case without the hollow sphere, the electric field at a point directly above thez))rihre;2 ogm 0ou5e hollow sphere has

State three properties of conductorsh;c; o6 jynfr ;lip5 1y,zr( ;bgu,izu in static equilibrium.

State Gauss's law.

  The charge carried by on *2ndg 2qrnos2e 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. / p;/mtyc8ant(5y zp g How many more protons than electrons does m5p8zg/y/a(t tpcy;nthis piece of plastic have?

  What is the charge on 1 kg ofz xg 43uw)h(rc protons?

  An atomic nucleus has a charge 5h: ldff0axb v-8pm e/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 a bcj:m,;e z d8nfyf.9-4.0 mC, respam;fz .ndc,8y9 :bjf eectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charz m 2btvr)z*95modyea6 0c+j i*v/mufge, and the force between them is 1.0 N. What6) 2d va+z *mti e9fc50/myr*mvjuobz is the magnitude of the second charge?

  Two 1.0-C charges have a force between them 3xp gm*;9hh apxi7ve;*5m /7 lplki nnof 1.0 N. How far apart are they?

  The force between a 8zla pfpkb n5y,qgldnzk8k54r t-7 6 0$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencbi ib jn.t(epj571wv/e a 1.0-N force. If they are moved to a new separabiw i(5n.pj7bje1tv/tion 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 first ch7 ,vtmjxzn;(u arge 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 elecxtn;v uz m(7,jtrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-6k dp0fb+ds a s(s-j,ki:rb bg,sw r8+hc*kk9axis. A charge of +2.0 mC is placed at :cg6wr+dfr0 b 9p*(sjb,h 8k+d -sbskika,skthe 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 charge at the origin?

  Three point charges are lb .qs *l8p cgr*fe.aadses2/*y q c1u5ocated 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 te .s flqube**a.s8 /q acrsgcp2y5*d 1he magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is place)q)6 e9fef, ebrvm,.mfkhzt68ae:q vd 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 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 co,zqq eea6v 9etfh)8 6vek:)rbm ,f f.mrner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC isd 5e:k: lxk l3z4wfq+g at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net+dekf l:wxg qzl34:5 k force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10cr)otye8cd 5 ef0g0/l m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force one)g c/e8t0l f 0cryo5d the 5.0 nC charge?

  Three identical charges of 3.0rr luhze(/v3 + mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic u3/+he rlr(v zforce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what poasen5j fk5(3dint, on a l3 nj (e5adfk5sine between 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 x7tyi2 zz dgng59a3n(r = 4.0 m. Where on the x-axis can a third charge be pladn g9g r(z37iya5tn2 zced so the net force on it is zero?

  Charge +2q is placed a rwe 52czxd( p-h(4w/n unm:81p qzx*r9 zbcatt the origin and charge -q is placed at x = 2a. Where can a thir w b12 xad8 rqeur5n- tw9xc(z4m/pnz:cp*h(zd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.5 5ee0f5*m3nfgm s p v.k3jhlh0 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 udy:x /62peyr zp against the force of gravity by the attraction of a fixed proton some distance above it. How far 2:zr 6ypx/eydabove the electron is the proton?

  Two 0.20-g metal spheres are hung from a c nv72p-ad4 nb6rbo 233gn(ngr.nd kjdommon point by nonconducting threads which are 30 cm long. Both are given identical chn p d rngd627 3v2.-a3r4nkn(ndbjgboarges, 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 +40e. What g ,a+zb;qg uur7 .bdt,rzm6isr(,;ze is the magnitude of the electric field at a distance of 1.0 m,e ;; d zub(bzg ,i+ qrzus6r.am7t,rg from the nucleus?

  What are the magnitude and direction of the electric fi*w,2wjsi lxc:ek s:j 2eld at a distance of 1.50 m from a 50.0-nC charglci ksj e2sw*,:jw: 2xe?

  A 5.0-C charge is 10 m fro v0 xe bj*77zslkip(f8m a small test charge. What is the magnitude of the electric field at the location of tlf*b(7zp8xvs7j 0 eik he test charge?

  A 5.0-C charge is 10 m from a small test charge. What is therxg3b kju7:v5 direction of the electric frjgb3:v 75u xkield?

  A 5.0-C charge is 10 m from a small test chamu4v2i v+u y9)ialb9kqm (x:a rge. What is the magnitude of the force experienced by a 1vil:by( +k ami u mv29)xa9u4q.0 nC charge placed at the location of the test charge?

  Two point charges each have a valu+xf hot0mn 3s j9v8rc2e of 3.0 C and are separated by a distance of 4.0 m. +302vxtj rsfm8c9n ohWhat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is place2 a,o.itnz57 gyj/pawd at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. W 7,y/wtjaz.52o aingphat is the electric field at the 30 cm mark?

  A 5.0-mC charge is plm- s,5m m/xdz50bs; z9sw1e; /qd9 acvxrpwdoaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the twrqs-z;a;vcsxzmp 5sw1w9, dxo d/d b/m05me 9o charges is the electric field zero?

  Two point charges of +3.s2cjzr s g:21a0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between as s1gr:jzc2 2them?

  Three 3.0 mC charges are at the three lf7c 0)rk*i udsuwu : x)*hap1corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of *puiw0s) d) hl f:1ux 7kurca*the square.

  Consider a square which is 1.0 m on a side /3q3*re5vm y7oudcjmw8svgm(da/8 d . Charges are placed at the corners of the square as follows:m euvy3 dva /csm*8 ogdj8 r37wmq(/5d +4.0 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 u3*4.8t)zb7t6 qufdalpn sv - d c3cjjfniform electric field. What is the magnitude of this electri3dl 4jbfa.t vfj7ps zc 8n)tdu6 3qc-*c field?

  A particle with a charge of 4.0 mC has a; eii;4pj zr;m 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 N/C porm.5y rz+bh v/inting downward. What charge must be placed on the ball for it to be suspende5/bhvrz .m yr+d?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. T/xufdmj4eqa tnu7 0.za2l t5g;0jl :jhe ball is placed inside a uniform qmn7jlg 4jztaxd.al0;2j:t 5eu / uf0electric 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 cafy 48l-gfwff 2zk-ec 9rries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from thezf24ef fk -f8gc-w 9yl sphere's surface?

  A metal sphere of radius 2.0 cm car gxp-8-m4b t jf1mwq0iries a charge of 3.0 mC. What is the electric field 6.0 cm from the cente4bj g8m-fqw p-xm1it0 r of the sphere?