State the law of conservation of electrixi uv1 9ei3wl3c charge.

  Is it possible for two negative charges to att8n n+ rkt.s:fpract each other?

  Is it possible for a positive and a neioq3,:w mfmtl tz :h(;rlhzf02 l;yn +gative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass mrz;h+y.p+he 2tjyk k fp9w0bq4s4w4bfi1 9n rod acquires a pok4n.szmepf 9p9+rhjy0 f+ twh i42;yqb4b1kwsitive charge and the silk

  A proton carries a

  The model of the atom shows pz:ok0gk x: qxt9 m9o1sa) ve1a

  A neutral atom always9y:rsn ip on6dc /28ku has

  An atom has more electrons than protons. Ttuwav+*u9 qr- he atom is

  Materials in which the electrons are :1sc2r0j tr+af3vaxsdu a;j, bound very tightly to the nuclei are referred toxa+s2avs fa3,ujd0j rr ;1t:c as

  Materials in which the electrons are bound ve-m *qj;zoaa3ery loosely to the nuclei and can move about freely within the ma;jom a3eqaz-*terial are referred to as

  A negatively charged rod is 2wmh7z(fqsu 8y uf 2- 8htsh-gbrought near one end of an uncharged metal bar. The end of the metal bar farthz f h-hw(q728ts hyg-u8umsf2est from the charged rod will be charged

  Sphere A carries a net pos (e vf1qjff8 2saw5xzq9 ,mn0 uh5d.upitive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Whj8qq a(,s52f vm 0ezwndu.5xfp9hfu 1ich statement is correct?

  How can a negatively charged rod charge ax.h)y f.wi6n5czba gt; 5+olmn electroscope positively?

  An originally neutral electroscope is briefly touchednsa/4qd ch 1 *d.cbwgb t*of, g+rgn2) with a positively charged glass rod. The *swg,a/2dr +cn 1g nbocq ghdt )f4b*.electroscope

  An originally neutral ew(gjj;w81 co7 +b* pn*avdl4u s7j2zhbjzz5vlectroscope is grounded briefly while a positively charged glass rod is held near it. After the gljhzzw w8b dg(o ;jj4vcu7 1lz pjs*a*275n+bvass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sed372ng; lvcku0u4xe pparate. Then a negative object is brought near the electroscd2c kgn3 l0e4vp uu;7xope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulate-wfg i )z b;rgw)l(w0xd table. A neutral metallic ball rolls straight toward the object, but sto( libx;rw w0))-ggfwzps 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 Coulomb constorc+4 yif)6b b4 y; *(w+jjynn s;anorant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Th9r/vz fg* jh y9kh6qxt3 s780whewh2fp(a 7hae first charge is larger in magnitud7gve07hh 93ft 2(8wh afpkw axhjqz/*rs 96hy e than the second charge.

  Sphere A carries a net charge and sphere B is neutral 16kr*a;sfejsp*dgku m i8t/ 0. They are placed near each other on an insulated tablmsjfa1 p*;i8/euk6g*ks 0trde. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certaintbxl7aw7sn/8cgp g74m 1 6 fnz force. If the charges on both objects are dzn68mg ncp4g1lbw7a fs t 7x7/oubled with no change in separation, the force between them

  Two charges are separated by w3)wvr ;.ptv;ako.:y5kpax z 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 are3.)vz v :torp5wxyakaw.pk;; the new mutual forces?

  Two charged objects attract each o) 5xift7,v3blf 8 e4jc-x;2 jwvej fwgther with a force F. What happens to the force between them if one charge is doubled, the other chargv,vjex5ifj83 lg7-4;x c )tf ew2jwfb e 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 distancjaby5(x0 9-zkan e r 3lj,4realx4 k-ge of 1.0 m. What happens to the magnitude of t-3le (-kbaya4r0 eja ng,x5 9xjlzk4rhe force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by af f+kavvhy1* z*e2lg2 distance of 1.0 m. What happens to the magnia1y2g fef*vlv+2z hk* tude 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. What happens to.px1q, vc* vir the size of the force on the proton if the electron is moved 0.50 ri*,vp. vc1qx m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a secf o2htmr vs0-2ond 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 electrosta2o-0v2h stmfrtic 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 triangle. yp4y+-rhv (cpsc q) n1 When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 qprcscpny y1+ h4(v)-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 nhyjom6u q(kv2m- p4 (4 salc3not a vector?

  At twice the distance from a point charge, the strength of the electric field8s/s6 - qzmewa j7ps,m

  Is it possible to have a zjfbv,v:-;qi )ovibxc 7f 9av8ero electric field value between a negative and positive charge along the line joini7 9cxii;vfo :fvb v,q 8)aj-bvng the two charges?

  Is it possible to have a zero electric field valula,ew v/wz no(ns.6p(e between two positive charges along the line jo,a.ne(sp z vwl /(6ownining the two charges?

  Electric field lines near psitivvsd ar dy*tbv.q r8i;0 ev95h1e point charges

  The electric field s/-w( ool-:zlnxtc3j j u ir ds3u::(xkhown

  Can electric field lines intersect ij)nuo:j8y* k /nes* ) zwy9dyin free space?

  A solid block of metal in electrostatic equilibrium is placed in a s.2+ci-dgabru)m8 uluniform electric +-bs8i u.umc dl)ra2gfield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow m lfz6zuyk/ 3gp(6 jz3detal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the sur j3ukz3g6(6/fplzzdyface is

  A cubic block of aluminum restsp+ (p6e )o9exdg(aiap on a wooden table in a region where a uniform electric field is directed strai9+i)oe p(xadagp6(pe ght upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near yfy3(l1v0 ooran electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundee b- dk9rlo5vybehe9mr*lom/- xd, ,,d. As compared to the case without the hollow sphery*m/drl,, me ,9v ehk-obrle-bx 9 d5oe, the electric field at a point directly above the hollow sphere has

State three properties of conductorsmh.6pu/, iblc in static equilibrium.

State Gauss's law.

  The charge carried by one eleliyk 93q4qc 8l;+hwxz m:9xujctron 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 mC2hfn uf99b mq-b77 yln 4xc1zd. How many more protons than electrons does this um 4dxb h fq9z bln717-f29nycpiece of plastic have?

  What is the charge on 1 kg of prh ) :1fsubfz5potons?

  An atomic nucleus has a c omk0txf2ofg-1)1bor harge 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 h;7iwu0:o wb -zl /)dclpf(gnof 2.0 and -4.0 mC, respectively. What is the magnitude of the el buc:f-/;z0dglwwn pi )7oh( lectric force between them?

  A 1.0-C charge is 15 m from a second ca3zytz1yg6 c *harge, and the force between them is 1.0 N. What is the magnitudczt 6yz1a*3g ye of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apartd 9otyv;hu64k are they?

  The force between a txtv6lo(d 45 os yh.(*eib;jf$30 \; mC$ 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 1x,afe89wgm ip 5s0rd-.0-N force. If they are moved to a new separatioi8xm9prfaw dg5,se0- n of 8.0 cm, what is the electric force between them?

  Three identical point chabsr2t 2p+b 5fr1 9omugi*kt: rrges of 2.0 mC are placed on the x-axis. The first charge is at the origin, 1tb5outm92: gr2is*+ rb pkrfthe 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 acts on the charge at the origin?

  Three point charges are placed on eavut/63:)gq6 yil nzthe x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the n)a gq6zlityu/6e3v :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 charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC ay9r 8ijcb(vw 94 n8qy/*q lnaht x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 4n 9rq yhb*(ajynv w9l8 8qi/c= -5.00 mC at 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 square, and a second poiny l e:6; 9 vpg33r6hujmokm2het charge of -Q is placed at the upper-left corner. It is obsk9h:u6om6v3m3;e lej2 y prgherved 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 awv1t-x)7oi v4dd)d0 y rb wnw*lz1l0qt (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net - 4lvb0 x)0r1dd q)7oitndwwz* lwyv 1force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.j +fo 02pt:bkgk/hjg83qnd uz ui )m920 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the di:h/ 2 qmt 3z98obiug+0)k fupdngjjk2 rection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vert1,a+8 lptognq ji5opq0,/uk l ices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one i1o k,q ua, ng5j+ qlpo/8t0plof the charges?

  Consider point charges of +Q and +4Q, which are separ.sp s1e, o5eih h+lzp-ated by 3.0 m. At what point, on a linhszohpi+ , epl5-.se1e 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 = 4.0 m. Where o zwt9ip5y*fztrny)8 64 w,jqkn the x-axis can a third charge be placed so the net force on it is zerwfpy8*64zkyrt )9 tzi,nw q5j o?

  Charge +2q is placed at the origisvpt4o oykwoq.8*u lx 5h .3s2n and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force ony4lt*o. p2uq.w v3 8skox sho5 it is zero?

  A copper penny has a mass of 3.0 ;8gz; d 5v j,rzbz0tthg. 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 fixed z,2lvy1 zs3cmh0,ywgky:f elqk01 *d proton some diy cl130 ,:ksy 2lhz1w 0 ,dg*qvmzkyefstance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducti3qclk3 ,lno:yv / s2mgng threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between t:2 3,m3yls qnlg/ ovkche threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is ;inm 9rrs+s2 e89t:owq*pdcc the magnitude of the electric field at a de9row9t p:2incds8q*scr; m+ istance of 1.0 m from the nucleus?

  What are the magnitude and direction of the el xv/q.a7 it bwr+b76nsectric field at a distance of 1.50 m ft q/7bwi 7n+s.vrabx6 rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnit,* qdmh( xa1zzude of the electric field at the location of the test charg1qaz,*z (hdmxe?

  A 5.0-C charge is 10 m fr- 5qu (/n, t*kqlocprhom a small test charge. What is the direction of the el-lq(,/ to*5qu pkrc nhectric field?

  A 5.0-C charge is 10 m from a small test charge. What is thefu3x(hkk /y97,upvgn. f. xtt magnitude of the force experienced ytgvxthk kp3 nuxf,f .u.97/ (by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated byrywkho( c 5 h ko)-k+ pm:;uj)dv3kb9i a distance of 4.0 m. What is the electr mo)-v ()hkpuok d+w5rkhyicb;93k j:ic 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 andgnpv hx7 6ok+ t*n3j;)dfvdn4 a -4.0 mC charge is plac+jd)n n6vx gtkpv;o*3fn4 d7hed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sticf4u m .p(gy) 8gllmsj0xc lh44k and a -4.0 mC charge is placed at the x sh4ygj( 8m44cf)gll l. u0pm50 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 mC are placed anp 8n(bi .9kgyt x = 0 and x = 0.20 m. What is the magnitud n9(pkyng ib8.e of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three c6s56xhwa 2wqc3 u cq*oorners of a square of side 0.50 m. The last corner is oc*6q6x s3ahcwu52w ocq cupied 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 side. Charges are prpvz p; u,kv*2laced 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 therpuk*vvz p 2,; magnitude of the electric field at the square's center?

  A force of 10 N acts3m a0 9.nsvwt )obau;o on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of o;bwu.0 vo)3s m atna9this electric field?

  A particle with a charge of 4.0 mC 9mfyxi d;po1,bkc p7 .n2sc/f 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 rme)d 1do f 0w*5dg-akg is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be susp)g *5dmk- wrf0de d1aoended?

  A foam ball of mass 0.150 g carries a c 9 681 ket7e4mlevvxomharge of -2.00 nC. The ball is placed inside a uniform elekvx4me1 t68e7mvl e 9octric 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. Whag. j,q:ugtphq6nu ah+1o xh1y) *dd2zt is the magnitude of the electric field 5.0 cm from the sphere's 1oa,du) hph nz.h :*1dqg6u2gt jyxq+ surface?

  A metal sphere of radius 2.0 cm carries a ch- kuip.ykr/y)gawqfqzt-c;c.n +0t (arge of 3.0 mC. What is the electric field 6.0 tgwc/+uqz.f.yk;(pctan )kqyi- 0-r cm from the center of the sphere?