State the law of conso-eww +u;w t(n6d ze u,v*a)reervation of electric charge.

  Is it possible for two negative charb 1k46rn 1m,rnbpd7iqut *2u ages to attract each other?

  Is it possible for a positive and a negative charge to at8qj7cb 1vnxewb9v )p ;3)js; :fuard otract each other?

  A glass rod is rubbed with a piece of silk. During the proco, qq1e maow s0y txgun--:*v1ess the glass rod acquires a pos menqo0xova 1ws:u,1*tq- g-yitive charge and the silk

  A proton carries a

  The model of the atom .zrztr)28b dqm *-zgv shows a

  A neutral atom always hasowuen: 9ztlb14t 0 y:c

  An atom has more electrons tha2xb6qow6 utgffy .5w5 tpvy ;h a+w(v+n protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei afv q 3+yv:/ xct*b(ohrre referred t(fr+xo:c v /yb*qhv3to as

  Materials in which the electrons are bound very loosely to the nuyhvf dimy,o4(g+b., 5z f pa0jqx(ybvx,m3u)clei and can move about freely within the h ozmfqx)y.f +yugm( ,,viv53jypbd ,ba4x( 0 material are referred to as

  A negatively charged rod is broughz.(6n8h av cz4grfxen5l8 w*jt near one end of an uncharged metal bar. The end of the metfznn5hl( 4 raez8vjc8 *x.6 gwal bar farthest from the charged rod will be charged

  Sphere A carries a net posuoovetsb8 h, v7;i93xitive charge, and sphere B is neutral. They are placed near each other on an insu97 ;o3xovt8beihu s, vlated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charges 8s q*8umdu0ad rod charge an electroscope positively?

  An originally neutral ec fs2ku3c8 obdf8n*,h lectroscope is briefly touched with a positively charged glass rod. The electroscop8oc sf,db h fku8c32*ne

  An originally neutral electr9ed0d1kxe j i m/72r2ks.js pboscope is grounded briefly while a positively charged glass rod is held near it. After the glassj/ 22xk9r i7d0sedm1 jkps.eb rod is removed, the electroscope

  A positive object touches a neutral electroscobj fvcar--tf9y -e3bc/ it8(ipe, and the leaves separate. Then a negative object is brought near tia3ic9-jtr/-ef vb ( t8bf-yche electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objecbc;t 27onchc0 t 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 forward, but does not touch the negative obj;20ccbct hon 7ect. 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 Coulo 3eu hizbl2*,nmb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanc a7 ;l+s;s,uhoppduccp+x k--e d. The first charge is larger in magnitude than the seohua+7xkd p;+ ps u,p scc-;l-cond charge.

  Sphere A carries a net charge and sphere B is neutr:(4m6iap*f fic .ic dwal. They are placed near each other on an i64i icf.af:mw dc*i p(nsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract ea9f-*a89 i* uq asivkecch other with a certain force. If the charges on both objects are doubled with -cv sa* euii9qfka89 *no change in separation, the force between them

  Two charges are separah rc vjc;ej(lq4hm3 r6hw*s35ted by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new * jq;c6lh3srch3m( jrw4ve5h mutual forces?

  Two charged objects attract each other with a force F. W9:z zpiw) 9h(wqsps3bhiuv)z9 r5z a1hat happens to the force between them if one charge is doubl1bp szih3uw)wrqz9(ipz 59v s)ah9z:ed, 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 mvc2f9oc3lf*)+; ph1 br8eofb-xwl da distance of 1.0 m. What happens to the magnitude of the force on the proton if a s9df ex3v+f2b*c1 m lo-w);fol p8c rbhecond electron is placed next to the first electron?

  An electron and a proton are separated by a distanzu:kpaj)a)ez+8+tzjzoh4z02: do z kce of 1.0 m. What happens to the magnitude of the force on the first electron if a second eleczp:d tzo+k zja )u+8j4zkze2:a)ozh0 tron is placed next to the proton?

  An electron and a proton are separated by a distance of q7+ip v ;vvb9qkbdahcr44uo 0bh./; w 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to t4ho/ ip avdrqk;0 .479wbvbhq c+bvu;he proton?

  A point charge of +Q is placed at the center of a square. vapq/5h4uz ni0a lo .; When a second point charge of -Q is p4a .ah0 l/5 ou;qpnivzlaced 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 center of the square?

  A point charge of +Q is placed at the centroid of wt6p kwz*)puom/e8( can 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 fopmt/o*(we8k)c wu 6p zrce that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followi9 t wv:qgh1a6on/q-eoc8y 6ttng is not a vector?

  At twice the distance from (z vtr(+noe +.)hb4qzq-m hlka point charge, the strength of the electric field

  Is it possible to have a zero electric field value bet;mnwl n(oz 0y-ween a negative and positive charge alon; ny -l0own(zmg the line joining the two charges?

  Is it possible to have a zero electryw+*r8o u +briic field value between two positive charges along the line ywrbo r++ ui*8joining the two charges?

  Electric field lines near psitive point chargypg: sdq44u2/7 fi(gq i1p zfg3jc uc0es

  The electric field sb0u ,,va 6d:nsxse9ruhown

  Can electric field lines inters 41ec1 fz ,c0jek7tybcect in free space?

  A solid block of metal in electrostatic equ mh,blr4i,ofa8m,e9z5j hby() pvd 6bilibrium is placed in a uniform electric field. Give a statement concerning thez vbd 6 5eb,hr,8,ml i o(4)9mjybfpah electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equa/w pf4/or ep s;/yt1dsl diameters are each given the same charge, the electric field (E) midwa;epdw/ 1syosf r/ p/4ty between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regiv 03*2vz; sq9rza(qa ,got wrgon where a uniform electric field is directed straight upward. What can be said concerning the charge 2(svrw3 tg q *voaa,r09 q;zgzon the block's top surface?

  If a conductor is in elec- y:quew.d)659ty fkezk )r u0hi-j .hevl.x vtrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a holl 8+6:3get clp o/d ljmf-7hkqcow 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 haskldc:q8 c e-6pt3o/h7lm+g fj

State three properties ofs9t83b f nmkn45 (xkxo conductors in static equilibrium.

State Gauss's law.

  The charge carried byw(hxq,k.fn( k/ jow-z one 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. How many more prz +ais2y98db 1xpp*vaotons than electrons does this piepd8bszyv p 1aa9+xi*2ce of plastic have?

  What is the charge on r,i.y vq (jxwh+ d.fdxnr3bt3)fo**x1 kg of protons?

  An atomic nucleus has eqd9wq) ahe6c 2jey vj,a;f( .a 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, have chargdg5ibwdfy gurou+3b 1)a s64vv*55qfe values of 2.0 and -4.0 mC, respectively. Wha ) a+y b*1uudg4v65bqws35dir off g5vt is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the fo-p,.kpc 3*6hmdi m:lhmueq ,9mggvu; rce between them is 1.0 N. What is the magnitude of the second chq6e hdmupi*g mm k9,p- ,l:cvg3uh; m.arge?

  Two 1.0-C charges have a force between themgw6td*9zt.tvpo (r x) of 1.0 N. How far apart are they?

  The force between a 3(mpbpija vc5 3ca,eg ) )rej7cv9z4o$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initia10-zr9v ab gp.oj3ikdlly 2.0 cm apart, experience a 1.0-N force. If they are moved to rodiz1.0 v3-agp bjk9a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are pl ./ynxr,4c9tl g791okqduvhsaced 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 tlq9,s9. vdk4yhtxu1 g7nc o r/he magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on thwfwjl(.x,)o v*alw :/w g;auue 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 +4.0 mC at the 100 cm lax*u.wuf, ;/ )oa:vwwgj lw(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 followin9v.s8gz 8 imqiup7 a,cg positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC a iu,am88gqzv i s7.pc9t 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 squarec7t ws)fpl:2x, and a second point charge of -Q is placed at the uppc2 w7t lp:)xsfer-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 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 a0f9h j:ygkv s;(qbey b-e:n;. gdv: fwt (0, 0). What is the magnitude of the net v:e fk:.yfs;hgwy;bdg:9(-v nbq 0je force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nCpzkd -9z4d )bn is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the npk )ddnz9-b4 zet force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at rba1 - r8e3psfthe vertices of an equilateral triangl3bsp81rr- eaf e which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point chargb bc)p8x :5hpe-n)iedhe70 sdes of +Q and +4Q, which are separated by 3.0 m. At what point,) hshp0dx)ie8 e e- cbdpb7n5: on a 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 at x = 4)2w5.b4d*v ynd apxu p.0 m. Where on the x-axis can nd.u xw 5 2p4pab)d*vya third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is,ygtg+, :sg*,dbprs0 vmz3mw placed at x = 2a. Where can a third positive charge +qr:gyds0tz,wm bm3gs*,+ ,p gv be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tot mp0txbeix( e 6c-th 9cah3.ml2, 4crual 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 attractffr duhy3o/ .j( 37u6wth wnn2i8 ;cation of a fixed proton some distance above h.iju o y6 ftw 7/3hdc8aur;n3tf(2nwit. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pointb)vt1l 55gv)7fmam d syp/z9c by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostzvy 9t/mp)fsdc1 lg5b)avm75 atic 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 is the magas 08eay:rt p:nitude of the electric field at a distance of 18ra0 taep:s: y.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distant-1n7nfg jy w;agu t5pa 0*nj,ce of 1.50 m from a 50w7-tj, ut5*n1f0p; gay njgan.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the efq.b 6qanq7e*liy y40lectric field at the location of the test c 6qlaybqfqi*7y 0n.e4 harge?

  A 5.0-C charge is 10 m from a small te :m4 jpv9:tv/ j)j .ff7d5cmge g/y pi8sopjx-st charge. What is the direction of the electric fgef:y9 :jxj/mvp v48d.-7ojc/g 5mp)f istp jield?

  A 5.0-C charge is 10 m from a small te)y6dkc- am2 aust charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargecua-a2kmdy ) 6?

  Two point charges each have a value of 3.0 C and are sepa x;hw*njz.+3g pl,w9w. pkkbrdd 11uc rated by a distance of 4.0 m. What is the electric field at a point ml,wzj 1b*ng9. +pxc d;pwwr3.udh k 1kidway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC+6faja1 ruc:j tbk h) )fz7v6q charge is placed at the 50 cm mark. What is thv6ab:c16h qj) r z +ffk)jau7te electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC 4xev c9j t*h,hr2mv -jcharge is placed at the 50 cm mark. At what point on a line joining the two charges vcr9m hev2 ,-j*x 4jthis the electric field zero?

  Two point charges of +3.0 mC and -753i3 qf 5ko-z1y8fun rrd zk2gof;m.l.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fiel1-f2 g 35f ok znfo3uqm ;r8iyzd5kr.ld at the point midway between them?

  Three 3.0 mC charges are at the three corners of a t1;1xpca,pl ibzm1 y.c(jou. square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the elej ;(1.iu1zltmpy c,a 1cpxb.octric field at the center of the square.

  Consider a square which is 1.0 m on a sidb.b2 1tesx:t6 d,df vxe. 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 (0, 1). What is theb,2x xt:sd6vbtd.ef 1 magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.*b(u43fma psi* n1fld 0 mC when it is placed in a uniform electric field. What is the magnitude of this electripi3*1 l( nsdfu* 4mafbc field?

  A particle with a charge jms 1ril1- dkqc 0uv30of 4.0 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 .yd xqa)i46:.xix ;uw ik3ph jplaced in an electric field of 6000 N/C pointing downward. What charge must be placed on the balliki4upjh)y6:ax. .x qd;i3w x for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The bal3do6u )d oj;x0qbc gu(:y g+fil is placed inside a uniform electric field, and is suspended against the force of gravbgyc)+0qd j u:fx;du36(oo giity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What isvtcqfk c ,l2;a3.j dd2ll98ou 9sqf8o the magnitude of the electrict. 92sfa,j8 8cl9 lk ;d qu3fl2covdoq 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 ijp 4,br f/;g2vkb kcy j02ho;js the electric field 6.0 cm from the center of tjy;,gpb2b v /0;o k4hjcrjfk2 he sphere?