State the law of conservation of elac:xgktzkq tpas52k 0;/l3 x0 ectric charge.

  Is it possible for two negative charges to ag4h8fuhwp qv.mr29m z* zf64g1 tpas+ ttract each other?

  Is it possible for a positiv /jonplvt8. -x9dyc h*e and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. -9w j a5 qci+rq06pxo,jo/tf y During the process the glass rod acquires a positive charge and the swxyjojqqfari-,5+tc 0 9 6 /opilk

  A proton carries a

  The model of the atom bq wjeyrze3,cdb dlac/ 2e2xud 5 ,x5,6ay9:mshows a

  A neutral atom always haszta -iva3d/ml9 ,pb m5rui /9p

  An atom has more electrg80qi kifg7 x;ons than protons. The atom is

  Materials in which the electrons are ,4x 5ga6pa8fv)xgf r* o)tyulbound very tightly to the nuclei are referrey*fvo6a) ,r8 uglxg5ta)p xf4 d to as

  Materials in which the electrons ar+yf+js7wykty p; (*t we bound very loosely to the nuclei and can move about freely witptyf7 (t*w+ +kjyw ys;hin the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal l h4vfdsytl3j4u- :3k bar. The end of the metal bar farthest from the4td3j hv -ksl:3ufly4 charged rod will be charged

  Sphere A carries a net positive charge, and sphek(jfq (1gf l/ j q8xz/k dy;r4f81k8ocdmz/tkre B is neutral. They are placed near emqod1dz(;c8fkq k8gj/ / tkj4fr1yk( 8z/lxf ach other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod ch*37 rf5bsicwg*nh .hgarge an electroscope positively?

  An originally neutral electroscope is briefly to8hcg 4+obzua6- kdc,r 6qc 0jauched with a positively charged glass rod. The e 6h k-uacjgzcd6b 48 aq,c+o0rlectroscope

  An originally neutral electroscope is groundedu9 l768y2m3iopgcm scni5-d 4 t9a fgi briefly while a positively charged glass rod is held near it. Afteifm6dig- 78s g32 oy nil9p9tu 4mcca5r the glass rod is removed, the electroscope

  A positive object toucheswxeve)*d8a.qwgn n6;z; .wtfzr vn 50 a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope,8 xw*e 0veqwnf.5 gwtz n.dar6v;z)n; but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table7v dvp*dov n-.. 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 odv7* dp v-n.vdoes 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 c sa v:lbk7tl: 34thul6b3 79kqziqh/b onstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanc cc ekm.bs/f3yrf-e;p+ h,z8ie d. The first charge is larger in magnitude than the secondf sem;e p3c-+ifh,cry8/.z bk charge.

  Sphere A carries a net charge and spheuheen9b z,vopi48l1 n5m .xg+re B is neutral. They are placed near each other on an insulated table. Which statement best describes th8op9 4lnxeeub igm,nz .+h15v e electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charge5-/q zo: kntn6xxkc -fklt p)2s on both objects are doubled with no change in separation, tqkx nlot:2z kxc/pt--kf6)n5 he force between them

  Two charges are separated by a79pgnztv9;j u wg5)r jl((ngn distance d and exert mutual attractive forces of F on each other. If the charges are separated by a( tjzu nvjpn9g)g (g7r9;n wl5 distance of d/3, what are the new mutual forces?

  Two charged objects attract ea8es jwjjaf kz.-hpj9 e1hc337. v1zngch other 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 value1g8 .k9zj pe317znfcw- .h ejav3hjjs? The force is now equal to

  An electron and a proton are seg/l zg;-ntsvkg -4 -dwparated by a distance of 1.0 m. What happens to the magnitus-k 4 z -v;-n/dwltgggde of the force on the 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 j9m 0ii7y-fpe m. What happens to the magnitude of the force on the first electron if a second electroje9imiyf0- 7pn is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happ5+- d:mvvenvb-cy) qb ens to the size ofvbynm 5+v d:ve)b-c -q the 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 c6b9z8f.us et.z7gn y wsux72of 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 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 s9w g7sn ceb672 xtuz.zs8yf.uquare?

  A point charge of +Q is placed ok qw; *j.:sw l*swt.gat the centroid 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 o.s; *wsgjwo:k*l .qwtn 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 +z t6xp3ch-ms is not a vector?

  At twice the distance from cd:h 4sewgl9)q8jvi ;a point charge, the strength of the electric field

  Is it possible to ha1rr7z zpf o5zn73pb+ is 0qg/dve a zero electric field value between a negative and positive charge along the line joining the two charge 7+psqzbrodf/z1z 7ng30rpi5 s?

  Is it possible to have a zero electric field value between two positivewtp4 la ,vacc2)co2e ; charges along the line jc,vce)tc; o2 wa2p l4aoining the two charges?

  Electric field lines near p-( 0w8b rfczolky y.s6sitive point charges

  The electric field shdt4hs4 ;o- epcp-+namown

  Can electric field liney0td se8mkg*1( emgu 6s intersect in free space?

  A solid block of metal in electrostatd/o2lr5up mo x*ya x()b;s 8kric equilibrium is placed in a uniform electric field. Give a statement concernxo2y;( /mbo )u5r*xr8dk plsaing the electric field in the block's interior.

  If a solid metal sphere and a hollow1v qdt k9u0p2v metal sphere of equal diameters are each given the same charge, the ev01pu9v k d2tqlectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests ooiqwu/(f)f, m* ;yloxn a wooden table in a region where a uniform electric field is dir(yw ,uif omx o/fl*q);ected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elecio* 6kyg5wrr5 tric charge

  A positive point charge is enclosed in a hollow metallic sphere that is k32y0ghqc1 /pk4yt kv3x5 qef grounded. As compared to the case without the hollow sphere, the ecqt0y/ke 1qfh 4g3v p25kkxy3lectric field at a point directly above the hollow sphere has

State three properties of conductors in static equf j,ce6c,p5rtilibrium.

State Gauss's law.

  The charge carried by one electrond;o2je*udf2w2vy g-m 3kk bo + 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 charg sj;t)5q s7hgde of +2.00 mC. How many more protons than electrons7s ghs tdj)q5; does this piece of plastic have?

  What is the charge on 1 kg of protot1:u,kd2dszf*ru 9rac,p 4lrmccf: / ns?

  An atomic nucleus has a charge of8fpkj4y-nw m1 $+40e$. 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 -4.03sy t ;u(6udzaqe b/gh. v3x+a mC, respective q;t(s.ah u/bez3 xv3g6yd+auly. What 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.s ipc 9spy.i)90 N. What is the magnitude of the second chargec9si.) iy pps9?

  Two 1.0-C charges have a force between them of 1.0 N;rh uek kterlxi78q+t+d u), ,. How far apart are they?

  The force between a 1f:rhtc 73jb9ue0sotu;n3s b$30 \; mC$ 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 lhb8 ;tizeakk/jli;;wbb , , dr v2+p11.0-N force. If they ar,,r i/j;8bbtwahklid; 1 z2 +ekvlb;pe moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firstl fpms,z,d4 e x0,p 2a2y7ohpd charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mar,2pdf zl70 4ha , ,smd2yoxpepk. 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 +2.0c8vet 6gf4tdq48;hjr mC is placed at the orie86ftdqv4j;8 tr gch4gin, -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 electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q-vgi j* w6seo*1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3*v*e-sj 6wgio = -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 poehb0;w v ,z:x4q(w cpuint charge of -Q is placed at the upper-left corner. It is observed that an electrostatic b(4;zw0wpv qh x:e,ucforce 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., 4dqo/kf.kuhuk l v/pi+8(lg10 m); Q3 = 5.0 nC is at (0, 0). vk8 lh+(k.q ki/ofudpg u4/l,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 = 5.0 n0yifkzs4h sd3,66fna( mt rm 3C is at (0, 0). What is the direction of the net force on the 5.0 nC char d(6am sstfihr m6zny34k 0f,3ge?

  Three identical charf,c:ucug0z qu 9 l(3* lii7xyfges of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic forc(9fqu:0f uy7* lc,liigcu3z xe which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which arbt ;rfkzl oa)u7p7r v(5 gp;v0e separated by 3.0 m. At what point, on a line between7gla(vf70p k5zrv;t)ro pb u; 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. ko5 yhz(0m)tj Where on the x-axis can a third m5hj0) yt(ko zcharge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at7nt r e3cus4 /lyqwu6xwxg.0 9 x = 2a. Where can a third positive charge s./qygl r 6ecux4ww t x3u097n+q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tot3(t gxxr31njx u8- d ttehn/:wal 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 of50oihb vf-/kh a fixed proton some divh0h-/io k 5bfstance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductinq,rg lu ; tt0tkw)x.n.g threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them aw.k0) ntt,qu.t; lgrx part 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 magnitude of the elumuu6f9qv 7 rjml4ffrh.ag1c i ;/-1fectric field at a distance of 1.0rj1.1cuffif 7gr6lm-; fuu9h maq4 /v m from the nucleus?

  What are the magnitude and direction of the electric field at a disbdhc ;htz: xg0 z/w y.6.gqis*tance of 1.50 m from a 50.0-nC charge?zhs0 .gigbzcdt/y:h*.x;wq 6

  A 5.0-C charge is 10 m from a small test charge. What is the magnf( f/tizfhww1la* 7*qv 0b3yxitude of the electric field at the location of the test/al3qwfy(fi vt*7fx zb*w0h1 charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction ofkcobt :rl:ow *+0 ;vkk the elv::k ol0wkc+ *obk r;tectric field?

  A 5.0-C charge is 10 m from a small test charge.crwia *t nt2(6)p6b yk What is the magnitude of the force experiwnrcyt *( p62i6tab k)enced 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 braer/ r/3ks7 b l:.rr/)ryesiy a distance of 4.0 m. What is the electric field at a poe r)e/a .rrk:ryb lis3r/rs/7int midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm m h1m;o )odx)jc 4urcq(d9he4nark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at tocd;deq(h14 juxmn o)cr )49hhe 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick b3to e;3bue3)slqkk17ge4ov z7cm 1y and a -4.0 mC charge is placed at1lkg73keme)b1 qy b3 v ;374otczoues the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of 9aw,;/a5 3k jjinrtkv +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betwe v n;j5r/ kk39a,ajitwen them?

  Three 3.0 mC charges are at th5 mia8(noman -fz8s, de three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the mmoz-,d( nfn8i58 aaselectric field at the center of the square.

  Consider a square which is 1.0 m on a sidec 2l wpv4w(t8jxo,w6u4z mkb8. Charges are placed at the corners of the square as follows: +4.x u k4,6cbjw l8wz2 8(omw4vtp0 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 charge of 5.0 mC when it is placed in a uniform elv3 p yd,nx;kj o4ywb7:0 qcrlo7i9e1js0;lksectric field. c0kly3ni 4vk7w:;p0,jo y79srlbd q; j soxe1What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mask0-j :uq)d c.9zcputss 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 elfwjezhlc c831)ss ti v4b5 .edb( 2yy.ectric field of 6000 N/C pointinzsd1bef(. stly54j3y )vbh w .28ccieg downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2 w.m9;(+l v:rxvze +4.epr fqnhthcx9 .00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitudeth.h9rfv(.xc we; 4 zrqmn9 :v+p+xle and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnitvz +q6m 3d4u dfrej4u2ude of the electric field 5.0 cm from the sphere's surj4z dmurdv6efq 3 2u+4face?

  A metal sphere of radius 2.0 cm carries a charge olt4e n6 n9nh4hhm,ep9f 3.0 mC. What is the electric field 6.0 cm from the cenh64h,hn letp9m e n94nter of the sphere?