State the law of conservation of electric ch1x2bz t lprwj;07 kp+ ia5)jvdarge.

  Is it possible for two negative charges to attract eachj r)/:tw ipfu1 other?

  Is it possible for a positive 55(fq npvnw x3and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the pb zuf 9 f94x 4*:d(zcr8ybqqeprocess the glass rod acquires a positivqq:b9 rd 84uxp*(y bc49ff zeze charge and the silk

  A proton carries a

  The model of the atom*qtjgy:;uzg-b3r+q 8c * iqrw shows a

  A neutral atom alwaysf:0*kx pgz*p,xf g5tk has

  An atom has more electroska7ph4cx1(jn3tm8 x ns than protons. The atom is

  Materials in which the electrons are bound very tightly to ypxxe.v p-y*3 the nuclei are referred y3 yp*.vex-pxto as

  Materials in which the electrons are bound very z0dzbpntnt m8( xe01 + 7v0zgtloosely to the nuclei and can move about freely within0gvnd1t (n0t8zbzxpmz7 t+ e0 the material are referred to as

  A negatively charged rod is brought near one end of an -pk**i,oijyl78tk* ( loq;f7 oz nfl ouncharged metal bar. The end of the m**kyploon;,f i ko*7lfiojz- q 7lt8(etal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is tc:q 6nozk; sgx)m1-xneutral. They are placed near each other on6c; xq1m nt-gzks:) ox 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 dfo fra6p2+hb :-y(r ci5mh(r electroscope positively?

  An originally neutral electroscope -c8p0 ugdb-pubi 28 (bnpml/bh.4 re ris briefly touched with a positively charged glass rou-p8e ic-lr8.0 b n/mp d( hbbup4r2gbd. The electroscope

  An originally neutral electroscope is gvo.fzq: k5fm )rounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the fq vk.)of:m5zelectroscope

  A positive object touches a neutral electroscope, and the leaves sepa9bu0uduarto(:h fb epj;99 8urate. Then a negative object is brought near the electroscope, bu9jf9b: ot0p u9(uhr 8ad buue;t does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulaiapn: x(u xy:4ted 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 object. At no time does either ball touch the negative object. What is the(ix4 y:ua np:x final charge on each ball?

  Charge is

  What are the units of the Coulomb constanssdyprq6e(h ky lj k9e-39 y +5t7o+ibt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a m385t3 z 8ihg5zdybtxdistance d. The first charge is larger in magnitude than the second chargttz5gmd b z8y 3x358hie.

  Sphere A carries a ne1a2-nzkbakpzo/tw 3(k ,ln+6rg yu (mt charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic fgz unm1a r 6/z2kyt ano3l kkw(,(p+b-orce between them?

  Two charged objects attract each other with a cep 0ti+2 q gf k/4n;9w8bhnppfzrtain force. If the charges on both objects are doubled with no change in separation, the foq+f8 p 9n4hgw ;/ n0zbtfp2ikprce between them

  Two charges are separated by a dis9t k9nie.3xyb tance d and exert mutual attractive forces of F on eacb.int 93x ke9yh other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other wi.c;+l8d8ldebu ls+zs th a force F. What happens to the force between them if one charge is doubled, the other charge i;+clseddsl8bl8 . +zus 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 bl 0ouor .l2so(qith5:y a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed nextrlio( t5lu 0:oos.q 2h to the first electron?

  An electron and a proton ar2w d12gdv,y a4kkx 8soe separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the o, x2d a2wyvds1k84gk proton?

  An electron and a proton are separ zv f/lv wqr4fo2-jon ny)ljc9/u:n1( ated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is mu -9/)o1wv l 4cq/fl(ozrynj :v nnjf2oved 0.50 m closer to the proton?

  A point charge of +Q43 g2wayk0 qnj is placed 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 squar0gqj2n a w43yke'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 ts9d /s234nkkxufw+dg he centroid of an equilateral triangle. When a second charge of +Q issk9nu k4dxf3/+dw2gs 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 a vec9 pxnfgxg;b*mf*tvo 4 4ehrhh5:(:dq tor?

  At twice the distance from a point charge, tab6o- 9lodp zj.w5s( phe strength of the electric field

  Is it possible to havx-,e11- dn ovfq ,y) wdw3dohpe a zero electric field value between a negative and positif)-o,3hvd oewnxw1 d, 1qp-y dve charge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positiveq.ssgrv;r) l ewvwy :2 :32yza charges along the line joining the t ;z2syyws r. la):wg2 evvq:r3wo charges?

  Electric field lines near psip/ p /em*apa/dtive point charges

  The electric field shownk 2yxieesx 47.

  Can electric field lines intersechg ,zvapwj7h9+ty- h9uf -u*a)e ( zmft in free space?

  A solid block of metal in electrostatic equilibrium is placed 1ff/ :kiwk i+oin a uniform electric field. Give a statement concerning the electric field in the block+ ff:1ow/ kiik's interior.

  If a solid metal sphere and a hollow me3 shaj (eu8sq;5d .jvltal sphere of equal diameters are each given the same charge, the electric field (E) midway betweeu;svjeq8a sh (l5j.3dn the center and the surface is

  A cubic block of aluminum rests on a)9sp 8fhgw /5cd fhd rwc88cn* wooden table in a region where a uniform electric field is directed straight uh dp8 nwwffsg*cdch 5c8/r)98pward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric dyap1ex0 s8 g +g16flncharge

  A positive point charge is enclosed in a hollow metae+7s-myh hwh4llic sphere that is grounded. As compared to the case without the ho 4-hmyhw 7h+esllow sphere, the electric field at a point directly above the hollow sphere has

State three properties of coni l9d:tnqi 0mt vpp/*gm967u fkew4*oductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron+st3wm// n avza)yu m; 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 y5/,h ttfmu9rmore protons than electrons does this piece ty95ut r/, hmfof plastic have?

  What is the charge on 1 kg of hsn1+hvb 2h+ l4 +pud 3i1uqyrprotons?

  An atomic nucleus has 6 :riww f;j,tzv(s6 )atc8l7lb a7 iyra 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 charge values of 2.0 and fofc(rm8/enkj2 9 hgl*(v+yx -4.0 mC, respectively. What is the magnitude of the 8 (+l2ncke *y9(fgjrxhvf m /oelectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betw43;qhqa fjpe* ubdb:w-z0l d,0d f;zh5kz)maeen them is 1.0 N. What zea :f; 0db ;0 d)hkzwabl-d qjh q4*5m,zpfu3is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 qa z4pr)t*z+ bN. How far apart are they?

  The force between a ygw/oh-+ ift*f 6xq1,db.:owqt+g bk$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience n4ombn 6hz yu3m2ti- 5 p3bxa3a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betweenn3t-oab6yn2x35iz 3 hpb4 umm them?

  Three identical point charges of 2.0 mC are placed on the x-axis. cmtb/ rv)3nus5ge3 ce7065. wugp w qpThe first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 1 squ/vb6uw ct35 )e735m cep0rw png.g00 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 +2.0h ,npsjri*8 5i 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 direction of the elhj,p5nsi*8 r iectrostatic force which acts on the charge at the origin?

  Three point charges are located at the +7mcrsdwp,ex ; c0luhe s)r56following 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 the magnitude of the force on the 3.00-mC ),p5e h c+d6;xm0 7ewssr clurcharge?

  A point charge of +Q is placed at the center //al5tl.l mlo3a7w3ekqto r7 of a square, and a second point charge of -Q is placed at the upper-le7ll3olqw. //m35or7 t lkataeft 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; vyvwqh +pykg(x3l5j * 8w7oh nC is at g7w* h3yh+jqwvy(lo5; vxk p8 (0, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5f52s oxej tvdu, 2v+m1.0 nC is at (0, 0). What is the direction of the net force on+vuosd21vtem f,5xj 2 the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed a9idk)- mh;n b.i4(m3mnh thplt the vertices of an equilateral triangle which measures 30 cm on a side. What is the(hm;lim .bn)hhmp i9n3- d4k t magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q andx7b, 2;f hot wu 29objr1ftwpbgt l5inn 00))n +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a chargbu 71ftw 9 f onjbw;ox5nnit02 g2lb, pth)r0)e 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 m. gbttr,q9+pzc.x;ol31v n8oy Where on the x-axis can a third charge b9clrn1bqygz . txo3,;8+pt ove placed so the net force on it is zero?

  Charge +2q is placed at the origin beoeenx0w5m-eu 2 7 2p;*dg(wbsuf ;land charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it i02ew ms2pe xu eb d-w5e f;bl;7o(ng*us zero?

  A copper penny has a masr 27*z l8k+.exnnewnls 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 a2 wdbjfcuy-;2xh(6gw gainst the force of gravity by the attraction of a fixed protwc2jyw;gxhb62f u-( don some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are h p00hryvj7 -qhv4lix ,ung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the ang hl40vq ryjp-0ivx,7 hle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Whaa0qo84 ph:dxa t is the magnitude of the electric field at a distance of 1.0 m from the nucleus?0 p aq:4a8hdox

  What are the magnitude and direction of the electric fiel0 lh au17qa4nfd at a distance of 1.50 m from0n1h7u4 aafql a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. px z) y, lvnb27n:9 h7jre.xmaWhat is the magnitude of the electric fie 9xbrh7p)7 lj anem,z2 n:x.vyld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction9 6ob /da1ise) wa3sxx of the electra1si3 6dx /eab so9)wxic field?

  A 5.0-C charge is 10 m from a small test charge. Whatmr7*v 0h 7sbcgx.nu.knz i7yn+hl9 86oxt i* b is the magnitude of the force experienced by a 1.0 nC charge placed at th77 yiv xohnxsg .kb7*i0b n.nz9r8mt +c*hl6ue location of the test charge?

  Two point charges each have a value of 3.0 Ca+m*m3ya 0aoq3kp0jj3rx (a c and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chargea3ja* jm3 qy cxom+0rpaa0(3k s?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 myigq6znu )(1c6c3mt d5rgxymg:+0ctC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mark?6(yut5)y +xngziccrg0 tm31dqc 6:m g

  A 5.0-mC charge is placed at t .eh6q, yar300cf9xab ifeyl0he 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 charges is thea . e0c0,yhyl9q6ir f0a x3feb electric field zero?

  Two point charges of +3u b.r o4sef *j;dve1*o.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at theo1 * .v*urbsf e;do4je point midway between them?

  Three 3.0 mC charges are at t nl,jqcj;a:,ohe three corners of a square of side 0.50 m. The last corner is :ajq;,njc,o l occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a sf /1csw4 nz t/7 s1val/tebnkf*s -lu8ide. 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 (0,4 n1vs8ea*1-ctssk f /nluf7lt w z/b/ 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 qg,t ./cr/ttvm ,2xcwin a uniform electric field. What is the magnitude of this electrimt/tvc q/2tr,cg, xw .c field?

  A particle with a charge of 4 d+pyp jz9/kr:l)dd5 4i8v po3kwnyf:.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 placed in an electric field of 6000 Nndfa*m 0idl+;qtjz ,6 /C pointing downward. What charge must be placed on thlfj d0;miq a +nzt6,d*e ball for it to be suspended?

  A foam ball of mass 0.150 g carrie *wb/lb oo1h)ms 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 1h*/bb mlo)wothe electric field?

  A metal sphere of radius 10 cm carries a charge of +2f1gwiz do6*/o u:vg xxf+h/zii,j +0m.0 mC. What is the magnitude of the el hgw+*mo06 vix zuz,1jif+/:fo/xidg ectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a cxv;ennf 8mq40harge of 3.0 mC. What is the electric field 6.0 cm from nnex qfvm0 ;48the center of the sphere?