State the law of conservatl nood 84 *;owqbit/4jion of electric charge.

  Is it possible for two negative chargj y3lwww/ 1;ples to attract each other?

  Is it possible for a positive and a negative charge to atvzlb3jt ,b hv 7ikk26bg q39s0tract each other?

  A glass rod is rubbed with a piece of silk. During th +b()tu0pzmnsapah1poe ) s*6 e process the glass rod acq bpt6p*m) 1+haos n0pe)(aszuuires a positive charge and the silk

  A proton carries a

  The model of the atom sho /2ed1 t8qnyclws a

  A neutral atom always hw /hw)zzm8nd:as

  An atom has more electrons qt fjjy7t +/ kuxijwy37j)w)1 than protons. The atom is

  Materials in which the electrons are bound very tightly to the n-.*peu (twf- a-ue mfquclei are referred to aspf qe(.a --* uumewt-f

  Materials in which the electrons are bound very loosely *o(z7 kuwq7qadjmw+v wz0h e*euv3n9p ,u( *kto the nuclei and can move about,d ejpww+voq7 z0m9a(3e n7w *z*kh v kqu(u*u freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged m.lw/itfr +p,zt, f ann:;un5n t6n; fwetal bar. The end of th lw: ,n;ia wt n f,;npftzt./frn+65une metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They lx*:/mnz) o yse 14x jm0uk/lzare placed near each other o k zxmsy/l):uoen*/ 4mxzl10jn 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 electroscopeurqjlbmzf+96kr 3x9.*b t- oa positively?

  An originally neutral electroscope is briefly touched wit z1y px nm9zt-ox//o1xh a positively charged glass rod. /1 y- xz9x1nopx m/toz The electroscope

  An originally neutral el a ;jptkl58jtvf5t13c7op y6jectroscope is grounded briefly while a positively charged glasf 8lk5t36t7j1y;poj va5cp jts rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, an/.7c v3 udocm*hhzr a*d the leaves separate. Then a negativ c.*d c*h vhzorm/a73ue object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulaterrjwcfu, vs9037, 1mo fce9kh d table. A neutral met 9eh17 ,kvfc m,wu o903jrrcfsallic 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 does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the+kgkv/wag r / r6s nmr*yv2cxg br/3 0ly.je16 Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fiu f1izgmwt787lu e d)n2pp2 ;crst charge is larger in mp2 7ei82; 1ngu dcp7zflmwt)uagnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near lmn++kcp6 f, m kqei jy0v;v;m5,xx:keach other on an insulated table. Which sqim kmex, kfjl5+;,vmy x6c+vk0; :nptatement best describes the electrostatic force between them?

  Two charged objects attraj:b a*6m(zjn2 1rdb nsct each other with a certain force. If the charges on both obj1mz jb: (nb s*dranj26ects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forced0,uk ws1c3.fg(sftip fube80 6wr5ns of F on each other. If the charges are separated by a distancer fiw0s f wd ( n3.sfutk016pgbc,u8e5 of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What h1hl o41p3rv hgappens to the force4o3 r1phh 1glv 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 force is now equal to

  An electron and a proton are separated by a distance s6-m quil qz;k(5r ozv4lvy35of 1.0 m. What happens to the magnitude of the force o3imkq v(5sllou-v;qz5 6ryz 4 n the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a dista-(4-h/m1 a g6dljbsjb m9ubfznce of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is bua4(6jf gmm -9lz1sh j-dbb/placed next to the proton?

  An electron and a proton are separ94ndfk 9r m/vj8n xt+l1cvaw /ated by a distance of 1.0 m. What happens to the size of thev +f ajcrlt/vkmn1d4 89w/ 9nx force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second point 34bf2hs po9k.x cl.qkcharge 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 pso..kxkl3b hc94 fq2magnitude 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 cena38wic s,e(yd troid of an equilateral 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 the force that acts on the center charge due to a third charawd 3y e8is(c,ge of +Q placed at one of the other vertices?

  Which of the following is not ap *vqc.5z3e r:* esuz6a xx*nc vector?

  At twice the distance from a point chareh-0vmk ,xnz2z42xhj ge, the strength of the electric field

  Is it possible to have a zero electric field value between a negativum1,int vjo1 *e and positive charge along the line j mun1oi*j1,vtoining the two charges?

  Is it possible to have (ycx1e7 gffx4a zero electric field value between two positive charges along the line joining the two ch ff(7y1cx 4gexarges?

  Electric field lines near psitive point cha,a):y co /ub qc+jl-gfrges

  The electric field shown pnus5q.22lhy

  Can electric field lines intersect in free spadi v1q)5v4tjm ce?

  A solid block of metal in electrostatic equi, g0qr.g9(y sik yvq0 tbe: 8sqg4mk(slibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interitkmigse.00s4 s, by9grvq qqy(g8: (k or.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each- i-inf;s 4dzt given the same charge, the electric field (E) midway be n-t;4ifz-ids tween the center and the surface is

  A cubic block of aluminum rests on a wooden table ink,c3bmfy-ry/to;f )gyz/;wg:sgv4 ui q 4 ;dq a region where a uniform elecqgk/ qvf;wtm rbyu/44gzys;;,) f- :3dc ogyitric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriuudrubj*/ f8u 6m near an electric charge

  A positive point charge is enclosed in a hollow metal s8u*6v b2rsfulic sphere that is grounded. Asbuu8 v2 sr*f6s compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium+ /bdkdzz*7r u.

State Gauss's law.

  The charge carried by ootw1oc2qf 8+a ne electron is $e=-1.6\times {10}^{-19}C$. The number of electrons necessary to produce a charge of $-1.0C$ is

  A piece of plastic has a net charge of +2.00 mC. How many more proau*m 8bvw: qj.tons than electrons does this piece oaq8 m.:wubjv* f plastic have?

  What is the charge on 1 9j9bfhd,uw*2jl shtgm 8;q 0mkg of protons?

  An atomic nucleus has a2p702zo6tb. deeb a pi 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, havr0c6ed5wf h ;sxet)m +e charge values of 2.0 and -4.0 mC, respectively. What f 6erm;ecsd+)hx 50tw is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 v 9wejpqrnd+, q19h +nznpfh*5z 4c(gN. Wha9r5 1dqh j zg(nz p4+hq+,vw9nnfp*cet is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How farh+9jvxb:e ++mb*d 5g ,xmanqd apart are they?

  The force between a lu.s dwn-c+ 8p4,rnjsab3io6$30mC$ charge and a $-90mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienchjt/ ; mz*3dcde a 1.0-N force. If they are moved/ cmj* tdd;hz3 to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC arewy3sud hu)ni lb()+0krxb7-pwk nm+6 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 electrostatbkymun7- 0us63+r)w)p+bi lnh w(xd kic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis v-ym7izw;c:n ip8+ ff+aoxl9jhs,d1. A charge of +2.0 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 magnitude and di9j; vz+hlf+c1wydx af7pm ,i:ins8o- rection of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positi(u:d 7g2x3p 7yt qehkions: 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 the magnitude of the h2iy(e:k q3g pxt7u7dforce on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point ch.f7yjx ob mvvv;e1n7)arge 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-lo);v y17jf.emv7v xbneft corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 ,oau6h2rt46 y lj7 lf4u 1uahdm); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on1lrdtha4f u o7aj l 6u42h,6uy the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = j6f wjpi4j+ job 0f12 sz,7heu-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 charg7 oj4f0zp+j621 jji,ubw sf ehe?

  Three identical charges of 3.0 mC are placed at the vertices of an equmm d19+hr(eshp+kz l;ilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force w1z empl+kh9r+ (hd;sm hich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are shi515 bmsycme)b)v0b hjw )i(:n -lqneparated by 3.0 m. At what point, on a line between the two charges, would it be possible to place jh)1 eqb nc-)5y:l( himmvsnw)5b0iba 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 nsex )e, fub n,sy:.b*m. Where on the x-axis ca),fy*e s bbne.:xsn,un a third charge be placed so the net force on it is zero?

  Charge +2q is placed ukuspkx d;9pp hj(-/6at the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so tphp 6 jxu/-(;d 9ukspkhat the force on it is zero?

  A copper penny has a mass of 3.0 g.s8-,j/j n9x qp/ar7rzal2vu u 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 attraction of a fix7uk4o r 1 -lnj d(txw)n+ygml9ed proton somerm7lu1kgjnx d+9 loyw4 tn) -( distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconimyjjzy. 28zst j (o)gdxo/ 61ducting threads which arg1y /j6z8(id jzmtyox.jso2)e 30 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 charge of +40e. l zusy4qlu1xc,q;2 d) What is the magnitude of the electric field at a distandclqq)x; 1s lzu4uy2 ,ce of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fpa n 7d14q nsxf7yq5*field at a distance of 1.50 m from a 5s4 7qd 57*yfp1x qnfan0.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudpagb(lk r2ukpcm)34o n/- xg2e of the electric field at the location of thrbu4p (c kn axo ml-3p2/gg)k2e test charge?

  A 5.0-C charge is 10 m from a small test lpdhk xb7v5cw jt mm0*,94nppb/ ,4wzcharge. What is the direction of the electricphb*zb75nxp tmw, 9kp0cw,djm 4l/4 v field?

  A 5.0-C charge is 10 m from a small test charge. What is 5 fhgfi3y,q:o the magnitude of the force experienced by a 1.0 nC charge q :ogf53y,f hiplaced at the location of the test charge?

  Two point charges each have a value of 3.0 C an/k ,h3b ialjy3ofz6.id are separated by a distance of 4.0 m. What is the electric field at ,b3al yj kii/ f36oz.ha point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a fg.g cf*2*7 ,q dlagl9xyrp(y-4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mark?cy(pd y *7a gf2g9grf .l,xl*q

  A 5.0-mC charge is placed at bb*(u. a.ad tm:yl1q xthe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm m dqbuy txb.1a:*(ma.lark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of 6-6t l )rd ugxdwbr;qzpo,6 *n+3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude ofz6 gdx upw6;d,nrotlq-) *br6 the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m.gku.wgua0z0,ruqgt2 (jyx/*nchf 5 9 The last corner is occupied by a -3.0 mC chxgtu*jqh(arfwzc g 05u ug yk./n9,02arge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are d *v u+m9op ,sc(l6dbgplaced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC aol u(dsc+m* p9v ,gd6bt (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 ae* xy+n bx:x18 zltu/o uniform electric field. What is the magni/ xo+1z:tbuxy 8n lex*tude of this electric field?

  A particle with a charge of 4.0 mC has p9gmnobl 4 69a j /u,a2avy9cda 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 fiic a1 jq4es17aeld of 6000 N/C pointing dow1cjaaq47 i1 esnward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.144oqnu glr6djh 9 6hs*50 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, an9ol6gjn4rhs6 4uq *hdd 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.i3vb mm kim (b.t; p3b-i3tr0b) k9ywf4lte8q0 mC. What is the magnitude of the electric field 5.0 cm from the sq 4wr ;ivt tbmki ti8my e0l3f9bb3.-(p)km3bphere's surface?

  A metal sphere of radius 2.0 cm car7dm x wve dzbfh,1 s3,cu79ix(ries a charge of 3.0 mC. What is the electric field 6.0 cm from the center,7,md 7w e9x f (cdbsuih13vxz of the sphere?