State the law of conservat3akv 65stz /hpion of electric charge.

  Is it possible for two negative cha15zjgtlnl9o h4u: r5 grges to attract each other?

  Is it possible for a positive and a negative zpv,92rkh+ re:mt(gq charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glassb8:sr/ sc5--oxp *r upa 3.jxwnzf/vs rod acqui85xf r cwu-:-op3p n* zsvs.r/sab/ jxres a positive charge and the silk

  A proton carries a

  The model of the atom f hbl b(;0kx)d4 hfk;b.-0x* ku;nc hswo1ayo shows a

  A neutral atom alwaysie79 s, gmlr9ic:b5zt has

  An atom has more electrons than protons. The atom 8r4dtp3b)10662nmc cp uqqyfqgxr 9zis

  Materials in which the electrons are bound very tightl-saz3 wyyn2evj9n6x+8a 9sb a y to the nuclei are referred96 9a+xw2s3 z8yabenv yna -js to as

  Materials in which the electrons are bound very loosely to g/v;ggx*l u/d1k n +ugthe nuclei and can move about freely within the material are referr/kvg/u*gndg;+u1lg xed to as

  A negatively charged rod is brought near one 9 xpt3j mtwajn6-.+mvend of an uncharged metal bar. The envtm-.n+3t a j m9jp6xwd of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They7fg y0l/9j zxoo*uym wgs (/k, are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which st,ozk/s x w9y7fum yog/l*j0 (gatement is correct?

  How can a negatively charged rod charge an el(v 1o v (acf(gevh)ce3ectroscope positively?

  An originally neutral electroscope is cjj32d(n yvm- briefly touched with a positively charged glass rod. The electrosjc2jvnmd3y(- cope

  An originally neutral electroscope is ground6n29f) *6i,w evutg4lzwpixged briefly while a positively charged glass rod is held near it. After the glass rod is rem,)uvti 6*gxel2inpgz w64 w f9oved, the electroscope

  A positive object touches a neutral electroscope, and the lea5vmp d.xo ean,zm+ybq v*0+(yves separate. Then a negative object is brz5qdb oynae., v++(vpym0mx *ought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively czqv+jeexfsg9)0zw*:h a)en dav t (+8harged object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral methe axnf*8z)ts9)v+ d agjv0( e+z w:eqallic 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 does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulombss4u:y+2 ehu(ocas :i constant $k$, which appears in Coulomb's law?

  Two charged objects are separatedmd- xtqz.-u; b by a distance d. The first charge is larger in magnitude than the second c-d;qxb .m-tu zharge.

  Sphere A carries a net charge and sphere B is neutral. They are placed rvwvjz)2 +9d( em1 vp(m74g bpkesvfy;; fsc4near each ot 2kf4m;m(j;v )z+bpcfe pesg(wsv491rv d7 vyher on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charg,sbv. ,yuq ,*tt*hjeb h c5gnb+)to6pes on both objects pht,g5t)bys** bbu +6j n o,c.v,he qtare doubled with no change in separation, the force between them

  Two charges are separated by a distance d mu r7)/wyu ni4and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, mn u7i 4)urw/ywhat are the new mutual forces?

  Two charged objects attract each kidn1ej7 d : ;::pc*ulxgat99l8m bdyother with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced7 :k *9lg:ba:tj8x idpmey 9nul1cdd ; to one-fourth its original value? The force is now equal to

  An electron and a proton are separated 4f hw.8e. 9f lvslru db)8rba5by a distance of 1.0 m. What happens to the 88dfuba9vhl5)f w eb4s l .r.rmagnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proto-7iutnj)zix 6n are separated by a distance of 1.0 m. What happens to the mi i6j7xu nzt)-agnitude of the force on the 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 m. y sa3u)j j:/7b:ae- srje5yaj What happens to the size of the force on the proton if the electron is moved 0.50 m closer to t 7:/jbsjur)j- :ea yj a5s3eayhe proton?

  A point charge of +Q is placed at the center of a sq t m kkg(;rk/v6;ppu4 i+gkb:fuare. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electr uk:(g;4 kfrbv6/tpi+gkm kp;ostatic 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 tri5uyx, bg6p d,ybb82sxangle. When a second chaux,y6y bx2bg5b8pd, srge 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 a4c..le+ trq49 fs dresc*e4ma vector?

  At twice the distance from a point charge, the strength of the electri7jy1dkmyap ;i e3o+i 6c field

  Is it possible to have a zq: pbq)*g/ .adrwni6atcu / y0ero electric field value between a negative and positive charge d/ab/ 6na)w.ycit*pq: 0gurqalong the line joining the two charges?

  Is it possible to have a zero electric field value between two posit+ .mvbyvy5 wzsse48vt3o7cl ,ive charges along the line joining vlsy 4 3 cwozsmyv7tb,8ve. +5the two charges?

  Electric field lines neaoonr x4 qc3uzoe4t1lgr*6 q +,r psitive point charges

  The electric field shown exs8lt8x p(3bq+ t6jh

  Can electric field li a ro0su)(d(wgnes intersect in free space?

  A solid block of metal in electrostatic equilibrium -a54dv c(xlud k uy6o;is placed in a uniform electric field. Give a statement 4 od(;vk-lcdyx6 5uuaconcerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal spher 4uz9ofsl dtouh6 48u+e of equal diameters are each given the same charge, the electric field (E) midway betwee6uu 8+df49tuh olzso4n the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wher.7 ly3z 2jdf bfgj/2dre a uniform electric field is directed straight upward. What can be said concerning the chajf2rzlg . 7d3d2b f/yjrge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electr -;mf,7epm gdn*oog6sic charge

  A positive point charge is encloq e f7,1w ;e-dzm owzttac3u,(sed 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 thet,qwe( azf7;dw c-t ,zo3e um1 hollow sphere has

State three properties of conductors in static equi2 lgdg*cp 8(wqbnhw 3/librium.

State Gauss's law.

  The charge carried by one electron isx4 qtzvk 02:ns $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge ok2 y xta(*d 8akp3qxitn v. k9tj7+q5gf +2.00 mC. How many more protons than electrons d.*8nitjaxtgdq3qk xp 9t2ak+57 (kyv oes this piece of plastic have?

  What is the charge on 1 kg of rh72 mdkdk*5mgbv( +eu1k0 cp-l1dgh protons?

  An atomic nucleus has aqm e4v2o4h4::j qtuo8hvym5 iq3xa q2 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 c-:jvvmh .99l ;gt0 ofrmea6dgm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of thel90tmrg;m9. j: have -6fvdog electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between qfnbk9a.(;glk;rpy3 yfs2jd0 bi r:6them is 1.0 N. What is the;03(b2by kqjl.a6gfkd rsr; inp9y f: magnitude of the second charge?

  Two 1.0-C charges have a force between them o*y2hd f8 :aaz;i:jqv yf 1.0 N. How far apart are they?

  The force between a 698 pqm (4s.ii aenucu$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart,b grll fmx(lmks2*:ru52 ce/b1n rj 24 experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what m(grfnb2lj 2b 4:/1 5cr *lsuekm lxr2is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fi yxps8 70wsxc(rst charge is at the origin, the second to the right at x sxx wsy7c0 p(8= 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 charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is plaxcf 4 i-7*vctyced 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 chaycx fcivt47*- rge at the origin?

  Three point charges are located at the following positions: Qt)j fj ov ucd3)d)lc0b ;1w*ye yi:+ok1 = 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 magnitude of the fjt dy3vuiy:w efb 1) l o0j);c)d+ck*oorce on the 3.00-mC charge?

  A point charge of +Q is placed ap -(7obu4ds;c j 8lcamw y)09ba+wtbqt the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is obsejsmbbp(+ dc8a ocw4;0qltbw y9-a7)urved 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 corner?

  Q1 = 6.0 nC is at (0.1e2 s+rw dh4xm30 m, 0); 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 forc 21wd 4rmhesx+e on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 3 jp :x/kelp69 otvzb)nC is at (0, 0). What is b pv93ptx ) lz/k6oje:the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticksmpjio,5d, ;/b xfck hq,f7; es of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force w d,m,;5xc;kfh ,bk/ 7jpsqfi ohich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which arn glcwb5u4-ls p30y5/* lptere separated by 3.0 m. At what point, on 5g 340tlpbcu-yp5l l*e wns/ ra line 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 72 z9cw5 sy8z j mfd.s 402wvdkn(f/cx1flcruat x = 4.0 m. Where on the x-axis can a third charge be placed so the net fjrw wncf15z k 2x2yscdzvd(/uf8s0l c. 4m79force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where )b;ux o 8hubm*9e3)marauleyyfu*)8 can a third positive charge +q be placed y m)h3 xeay;bf u8urb u))euo8m9**al so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A a3nbp mv- u9c8total 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 bywbmdhs2buay.)nvx *4o c 4*9kg:bh1i the attraction of a fixed proton some distance above it. How far above the electron is the proto9o2b 4sb.cvdi*ma:wn yxh1bhug 4k) *n?

  Two 0.20-g metal spheres are hung from a comtuf/rz4e i ju:dr(bfh2cv,* ) mon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them h2u:/v, jb 4czrdfif*r) (eutapart 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 z *hk 1l) (jsysay1.qkfgnw0ei b -g5.magnitude of the electric field at a distan-01* w5 jh(gki.bky.agy zn1sflqs) ece of 1.0 m from the nucleus?

  What are the magnitude and di z.g 9i30mebbprection of the electric field at a distance of 1.50 m f ig p9b.3e0mzbrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitu7cuo/ s2j*hn hde of the electric field at the location of*uh 7o2s/ jcnh the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direcsn 9jb )v+*atbtion of the electric fie b9*j abvs+)ntld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of g4(mxfq+ e(7g4x hkl v*n5s(tt6 mkw pthe force experienced by a 1.0g7 (45( xe +xnt mfp k*mhkvqlts46wg( nC charge placed at the location of the test charge?

  Two point charges each have a value op-qnmxa6 ,/ot*hsd /tf 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the sqm/ho/a*tp 6ntdx-,two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC hfx 0 kp6k0wp1charge is placed at the 50 cm mark. xp0 pkwf 1hk06What 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 a3 zrwudrc 6r jtwsdbkr458j,,d 3v9vy3 gy 2s, -4.0 mC charge is placed at the 5r 8wwdj,byu3ss26k 9c gj3v4dz53 rytd ,rvr,0 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 q)blgvu j6m f (4.f,dfmC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the poin .(4jf, ufm dg6q)vflbt midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. T/wqe1gp3muaj bz/ o-* he last corner is occupied by a -3.0 mC charge. F1wa b/jq poumg-z 3e*/ind the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Chargesff3p y7y,- ckhkoi* o( ebpz2a t062y7nmz9m z 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 (0, 1). What is the magnitude of the electric field ahyy*ec7zz3y,k6fmznkom pp i20 o (7bt-f92at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed ic,j(l5jh+(j6 oogb pr n a uniform electric field. jh ((,56o+obcpjgrlj What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC haso *0pyhy u/;35woxpknyeb+ 5t3h,gpd 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 pl m;y2p 2+jzcra:r5pdjaced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspendedd5j:c2mja ; pr+ rpz2y?

  A foam ball of mass 0.150 g carvp6ed +ih0d cet+ vuoo;v 8/kv)h0 d;xries a charge of -2.00 nC. The ball is placed inside a v he0 c0h oxvep;k6dvid+)8d ;u/vot+uniform 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 +2.0 mC. eqe :oy*np9fww , t*8lzn.4rf What is the magnitude of the electric field 5.9flfznw*t,enw p8*r: 4y.eoq 0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm cw;nhiy* 8y m l aar,5q-q+crp7arries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sph; cympwn,r iqalr 57qya +-8h*ere?