State the law of conservation of9yaezvnkb ht37 t 2/v:lend45 electric charge.

  Is it possible for two negative charges rm+ x5:o3+f.6b/vnj kfj rhl rto attract each other?

  Is it possible for a positive and a negative charra+(vmvrcq7 b+ ;ca6qge to attract each other?

  A glass rod is rubbed with a piece of silk. Durl gt ry7-18o0x.ec alring the process the glass rod acquires a positive charge and1l .8larryo7 c-e0t gx the silk

  A proton carries a

  The model of the atom shohd:w)lgekfw pqu:w3(us on( o p 7((f0ws a

  A neutral atom always h:9 f9ue oh* fk:cqm;rpas

  An atom has more electrons than protons. The aprc d n6o7apn :7kq:my6q-ti+hi; ;phtom is

  Materials in which tdlt.c73yd-6 upzo z; j4ax7v dhe electrons are bound very tightly to the nuclei are referre73apx.z;l6jc7u y -odd4zdtvd to as

  Materials in which the electrons are bound very loosely to the nuclei and can mo9bskc7z6f j aa:tl,on19 ff6g ve about freely wis,7f k 9o9gajl66 bzfn :tcf1athin the material are referred to as

  A negatively charged rod is br 0 0 n s*gv3zwutu4zwtz)xme15ought near one end of an uncharged metal bar. The end ofmuusw0xnv1) 3tg5 tzz* z04we the metal bar farthest from the charged rod will be charged

  Sphere A carries a nr8v m5ye3hs 1llt1a -1 6aashiet positive charge, and sphere B is neutral. They are placed tli8-rva165l amhys113aeh s 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 chfjvm4c a w bicy9y9l o7yde -.y5/ns9-arged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a pos os:iex )6ul9glbf 9+jitively charged gl6j+ xs9ob9)ui efgl:lass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positivelymgrj1o3:cv7+1b.b k5 vgk vep charged glass rod is held .m e3grkc1gv jbv ovk71:+ pb5near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separakoz yl69bh 11dte. Then a negative object is brought near the electroscope, but does bz9yold h161knot touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral me)pguq7 y3r6iytallic 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 doe7uyy6 gprq i)3s either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constc0-iz9g3 fomh gcqo 70ku7,o pr i3nx*7yw r8hant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a di.nz5 .irsc-*e uqaly3stance d. The first charge is larger in magnitude than thee.u ilrc-.qa3*ns y5 z second charge.

  Sphere A carries a net charge and sphere B is neutral. They um zdy l*i:42 m1hddo7are placed near each other on an insulated table. Which statement best describes the ele d h7l2:zyiomdd4u*m1ctrostatic force between them?

  Two charged objects attract each other with a c)b bzdl.-oad g *ajlh2ckz(-*ertain force. If the charges on both objects are doubled with no change i.zdohgc)-l-*aj bkl2dz( a*bn separation, the force between them

  Two charges are separated by a distanc zc,.(zrnku**e ogf1)dp:wvhe d and exert mutual attractive forces of F on ndkg zh o(v c*.:epr*uwf1),z each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each o7 1qtmy c)7mqsther 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 reduced to one-fourth its original value? The forc 7yt71m)qcsqm e is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happew wn(ju5*l 0 l6/tscvsns to the magnitude of the force on thest0ucv( ll6ww/n*s 5j proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happensq d)vp1g+0 cqpt+wk0kp3 2opd y6,rcf to the magnitude of the force on the first electron if a second electron is pot2cv+y dp qp,60k3k d )0pf+1wg qrcplaced next to the proton?

  An electron and a proton are sep/4l 24,ct,k aule:fkan /nzeparated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to:pkne e4 /t /lk ,falc24u,zan the proton?

  A point charge of +Q is placed at the center of a s8ei(m wt-emb(8 rjj xe.-h/gkquare. 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 cenem88j ( i/we rm.-e b-xgkthj(ter of the square?

  A point charge of +Q is placed at the centroid of an equilaterau/(o0:x oqjxlsrlo. zq46zm) l triangle. 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 thel4zm(/z06ls . oqx ouxoq)rj: force that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followiw s.b+yye+ce k7 fen5m sd,/1xng is not a vector?

  At twice the distance from a point charge, the stre+5 f a ewdu*9 s+a*2k,kjzjhobngth of the electric field

  Is it possible to have a qm/tum -hl52r zero electric field value between a negative and positive charge along thhlt5- uqmmr/2e line joining the two charges?

  Is it possible to havy.pqqmzb /u/ *e a zero electric field value between two positive charges along the line joininuz* pb/qmyq /.g the two charges?

  Electric field lines near psitive pw 2zgyur.hf0v) d- f9xoint charges

  The electric field shsl;dmm;.bh zz j 0h5b7own

  Can electric field lines intoydy g 0(zo5w jck-jpto1p)6* ersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in amnl :pdg)3mz9 uniform electric field. Give a stm p: )gmldn39zatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow* ; /hz(uzohos metal sphere of equal diameters are each given the same charge, the electric field (E) midway between thesoz*zh; /(u ho center and the surface is

  A cubic block of alumin;xi- war+qu x22z .bwpum rests on a wooden table in a region where a uniform electric fi. iz wqxbux rpa22-w;+eld is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an c1k9,em yii4 plau1* ac+an0relectric charge

  A positive point charge is encla7l.cdh + br 9xwrr45v -mg;lgosed 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 hollowxa 9rl7rv4- c lbhg ;g+mrw.5d sphere has

State three properties of conductors in staxvxl7x4 *e z4t+yyah( tic equilibrium.

State Gauss's law.

  The charge carried by one electroipm.ire* nt9k**g 0a, t7mwvmn 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 charge0z1n6r f4pab j of +2.00 mC. How many more protons than electrons does this piece of plastifpa 4jnr6zb0 1c have?

  What is the charge on 1 kg of prot5um;rwi8, i7b-i jxqm ons?

  An atomic nucleus has a c/dzqd v;z8qb;v 4vph ir;( zhih. 98lyharge 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 val4xn4px t jl;7pues of 2.0 and -4.0 mC, respe4 jlx4p;7 nxtpctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m ;zrta4ho5 d;wfrom a second charge, and the force between them is 1.0 N. What is t5r;t4aw zhd; ohe magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are theymqaf n ruv8l2vn(j8+8?

  The force between a l00)wi 9 g*bvgdmg7hb6q h5ik$30 \; mC$ 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-N force. If they vwlksy6 ,-h meum:) *bare moved l ,-s vmkme *u6:ybhw)to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0rzb k,eg1vx2;4px2yr mC are placed on the 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 magnitude and direction of the electrostatic force which ac gz;,2x1y4xvre kbp r2ts on the charge at the origin?

  Three point charges are platu ye8.98i n*fi8hd lp ;w3esuced 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 9uft u ipil88 y.83ed*;swehn +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.,sz:h8d3pf pc 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 magnituzsdp,:h8 pf c3de of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a squamm )hn:, (2gxr,mg )qwwx agq)re, 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 theg)g), h,: ( narm) 2wgqxwmmqx 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 = -1.0 nC is at (0, 0.10 mgvoatm( b 3* al9z15wk); Q3 = 5.0 nC is at (0, 0). What is tvm(1 * zt ab9kogl3aw5he magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);+adkrszf)v/2; ,ni qo Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). nas rdf qovz, k;/)2i+What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verta,v2rsp.46la*v z ga uices of an equilateral triangle which measures 30 cm on a side. What is24lvvsa6ra*p. g u a,z the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whatupth+x(x *4w +j4irsh;jep4/qiiy -e point, on a line between the two charges, would it be po r;xi++jp s(-w4jhuh /44* tii pyexqessible 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 chargexzj 1cib1( )5qel rpj2 is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is 5zc1e p2q) j1(jibrxlzero?

  Charge +2q is placed at the origd1)l s1msa0znin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zl zs1s n01m)adero?

  A copper penny has a massj4 8joo2 h-bdje-:4j(*a layr;rr m rd 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 gravity by the atgivn p7m4ox t 8u qsu1*74x9oztraction of a fixed proton some distance x tzsn gv97*74xuu8o4pi1oqmabove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads ws rf7 g6njrp/d2cgat svbq) .lzmv /t 2g3+,:jhich are 2lf 7qtn :6sbg. a/g mv3j,)pvdg2+trrz /csj30 cm long. Both are 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 choao n6t6+r:f9atkr8) ihir;earge of +40e. What is the magnitude of the electric field at a distance of 1 rok +f6t8na;:rire69i ao) ht.0 m from the nucleus?

  What are the magnitude and direction of the electri5g3sg7mx17 l0w eukfjnd ro4o3c6h/fc field at a distance of 1.50 m from a 5 m6ox3uf 3ed 5hn7kwl /grg0s4ofj71 c0.0-nC charge?

  A 5.0-C charge is 10 m from a small testfpr87jazt 7cw e/s o// charge. What is the magnitude of the electric field at the location of theow8zje r tas/7//pc7f test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dw4.* +yyefp)qs,dsuh irection of the electric ydfss *h+4q .)w ueyp,field?

  A 5.0-C charge is 10 m from a sm8lsknwtww i:4id8 x::h99bz lall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge wzdilthkin::xwsl889 b9w4:?

  Two point charges each have a value of s6tgwyw0f bah l-f ajw * +chd;t9;,j;3.0 C and are separated by a distance of 4.0 m. What+*yw hhjsa;fbwdwl 9c-0j;t,a6f; tg is the electric field at 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 -4.0rwgniat.)j *dp7 +6 ec mC charge is placed at the 50 cm mark. What is the electric cg*ritp)6d 7en w +ja.field at the 30 cm mark?

  A 5.0-mC charge is placed atm0yll2q, 9xt a 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 two charat0 2,9qmlx lyges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed a/qn v n;acliak zs 4m/6qeu7a0gw1l*.t x = 0 and x = 0.20 m. What is the magnit 4u/eaqicak n61/vl0;nlswqa.* zmg7 ude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the thvq cwg4a wcb6g4o;z-9 ree corners of a square of side 0.50 m. The last corner is occupied by a -3.cz9;g4-g4bvc6 qwwao0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 ob7 qfp) y2mj q.+ f:kj7hug/qm on a side. Charges are placed at the corners of the square as follows: p+ )yujf/7. bm7 :fqjokg 2hqq+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 c *:uwo s-gsv4zharge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electgw4 z*ov:ss u-ric field?

  A particle with a charge of 4.0 mC p7.u0pb 9ajq1ug/ mnm 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 may1o0.h8cc f/bf ld. lx* jnot76po,c nss 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placedl/6o*ntfd l.cpc0on cx f 1jy8. ob7h, on the ball for it to be suspended?

  A foam ball of mass 0.15r eb*j) zqv- lv68t3ul0 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the elee qvz -tuj8rl6)*l3 bvctric field?

  A metal sphere of radius 10 oq71-jfclzh 86 xqv*u cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surff8ujchvoq 1* 7qlxz-6ace?

  A metal sphere of radius 2.0 cm carrieyg4kos)1o 3-di y nex.s a charge of 3.0 mC. What is the electric fiel3e yxok.- gniy4d1so)d 6.0 cm from the center of the sphere?