State the law of consu.5 wo8cq np. so2pd mk (l8gur3pv62yervation of electric charge.

  Is it possible for two negative charges to attract eab 1qls0)y j*l+syx5tgch other?

  Is it possible for a positive and a negative charge to attract each other?*o. ry/9yk sjm

  A glass rod is rubbed with a piece of silk. During the 8z06z:laz wjk -dchoyh(7q0 f process the glass rod acquires a positive charge and theh qzz80lzo-:jf6w0ayhdk7c( silk

  A proton carries a

  The model of the atom epkd w7f o;7e6x-*kvq shows a

  A neutral atom always hn z kjx*2l6y 8xh gyz)svi.-s.as

  An atom has more electrons pugd8i 29/ y e7qq aw.zw8dy(vthan protons. The atom is

  Materials in which the electrons are bound very i4xb h:j// kp q0fa0;qj7cu0 .bxwxmu tightly to the nuclei are referred to a ubm/0jpkhx 0:40. wqqxa ju7 c;/bxifs

  Materials in which the electrons are bound very loosely 2ybkn5iq.7bj to the nuclei and can move about freely within the matekq7bni 2.yb5 jrial are referred to as

  A negatively charged rod is brougpm(ttdm0dmaks;9fvc86 7 (mwua af/ /ht near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be cht aw(0(af/9m ;d7dma6p m/cvfm sk8utarged

  Sphere A carries a net positive+bfuf/vd;p8 ih2 st, 5jg uq:s 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. Which statement iqu5v s8:fgiuf,tbp j/+s hd2; s correct?

  How can a negatively charged rod charge an electroscope m*s9czk ;6:)d gpdjczpositively?

  An originally neutral electroscope is brie:;m*- zdhhmo4t (go5 qw qe0hwfly touched with a positively charged glass rod. w*mt0qq ez5 h 4-dhowg(;mh:oThe electroscope

  An originally neutral electroscope is grounded briefly fhcp 1x *q31dwwhile a positively charged glass rod is held near it. After the gh*dxq1 c3fw 1plass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leave,uepx5 :)x*o: 1wsf xofrzwq+ s separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to tfowu+oxxe 5q1: *:x)z rsfw, phe leaves?

  A large negatively charged aq 4 4n8jdz,p,2ackwk object is placed on an insulated table. A neutral metallic ball rolls strw4dq2ck4 nza j,pa ,k8aight 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 v- i nx 67sf1v9to s(cgvbf,;ithe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first c*ih dudszvd :t/ ;tp1xf*4ih0harge is larger in magnitude than the 40 vhxh/1uz*i fdp; id:dt ts*second charge.

  Sphere A carries a net charge and sphere B is neutral. j5x ec5rgb4hj/4h/t -.ohtbf-jh j ,i They are placed near each other on an insulated table.jcx5 ij geo4th/f/4-,jrtb5bh j.- hh Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If f oe8r,g*lrqw0e8c r 3-ck.a tthe charges on both 3rrrf tw0k c.oq l*ac8eg-, e8objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive for3v bwp pwgyy./h80 -kcces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual .hgv/0bpy-p 8w wkc3yforces?

  Two charged objects attract each other with a force F. What happens to th2 ,tv /e07twequ(jj3qw 5 tzjue 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 value? The /0 w,(uj5t2j7qwte u3qzvt ejforce is now equal to

  An electron and a proton are sepy5o)-;w zc.v i x. 6:ghypaufparated by a distance of 1.0 m. What happens to the magnitude ofp z.. ihw- ;v5pyayfxgu)6: co 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 m. Whg33 6ppjgqkq/pw q:+,vree 1 s uqq/(vat happens to the magnitude of the force on the fige6gq: eqq k+(q urspvpv3j pq31/w /,rst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1rp.gl +.san1 y1:d j8vsg3 nlz.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the p38n1rg ld.va:.lg 1pyj +szs nroton?

  A point charge of +Q is gikw 620 cy*bf v2rr;tplaced at the center of a square. When a second point charge of -Q is placed at one of the square's corners, it is obserr6ctykf2 wb0r* i;gv2 ved 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 ovil 26gu 7v:f ;mpp,ygf an equilateral triangle. When a second charge of +Q is placed at one of the trianpmfivgpy l7v ;2:u6,ggle'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 al pj.) 06qneng vector?

  At twice the distance from a:piqvn;um51tzz 0j3a point charge, the strength of the electric field

  Is it possible to have a zero electric field value betwn.r(cm2w., y/q6tkjbe m 8g yqeen a negative and positive charge alon(8w .b ,mecg.tyy rqm6/2kqj ng the line joining the two charges?

  Is it possible to have a z0ou ;y -etl-gaero electric field value between two positive charges along the line joining the two chargesl0; ey guato--?

  Electric field lines near psrgs tfm +3wuz /m:)2hiitive point charges

  The electric field shown47z1e;5wvtqv+i rmpb

  Can electric field lines intersect in free ndj) yf.kmk-f 3x jwae5uo+)8 space?

  A solid block of metal in electrostatic equilibriuso3euo,dd;w9wi4leqp f0o :3m is placed in a uniform electric field. Give a statement concerning the electric field woo,owe u94fepq3 d0l ;:ids3 in the block's interior.

  If a solid metal sphere and a 4wgdl2tmitg 4m6k9 z(/cn,dn hollow metal sphere of equal diameters are each given the skgm, ctw 4z d4mn/il9ndgt26(ame charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regiow6 ycam00jkmle 5/t z) hs45od+n 4lmnn where a uniform electric field is directed straight upward. What can be said concerning the charge on the d zhjc nl4t+myo6 0nm5k04/w)l aesm5block's top surface?

  If a conductor is in electrostatic equilibrium near an electric dxhht lris* oq1o(hka ) q0 w*u3d;+4ycharge

  A positive point charge is enclosed in a hollow metallic sphere that is groun 2aq0tkgm8rb, ded. As cgqm2r ,8tkb0aompared 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 stadkdo) - vkz2 z-(* 3jj1ohoumdtic equilibrium.

State Gauss's law.

  The charge carried by one electron isc3* bs, -th p.lyv,xoa $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a-v leen tv-;oixlh /62-,mkrhv*obd6 net charge of +2.00 mC. How many more protons than electd- ro6;l h lt 2vh,m-x/ve* 6venobk-irons does this piece of plastic have?

  What is the charge on 1 kg of pr7 ) i7pfs: tg;hb8soblotons?

  An atomic nucleus has a chaxi0 lxl96k ooi 0u2a/drge 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 -4frbfz)/o uh61 .0 mC, respectiv /)f hrfbu16ozely. 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 betweencq7wu reco -e6-e5i r1 them is 1.0 N. Whacqe we ecio71u-r 6r5-t is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 nmog 0f2s9pf(N. How far apart are they?

  The force between a j:xlk z43l9nyn9.jvz+ xbg,q.dfqp.$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm rm(sn7du 0b0c apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what rb( sncmu07 d0is the electric force between them?

  Three identical point c v13 y:hel+/k9 , ithpjrwa7b5t hsid9harges of 2.0 mC are 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 electrostatic force which acts on e7hy9/, l drvi+59ai 3bk1wsjhp :thtthe charge at the origin?

  Three point charges ar+f h7;wkmcxvnd21 ni* e placed on the 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 mark. What are the magnitude and direction of the electrostatic force which acts on the charge at t;n2vh1xic mknfw7d*+ he origin?

  Three point charges are located x.1d:cq- ppln at the following 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 thndx l:qp1 c.p-e magnitude of the force on the 3.00-mC charge?

  A point charge of +Qck7wu c, 7lod *cfgrlj8 r4j)4 is placed at the center of a square, and a second point charge of -Q is placed at the uppejdclfck7c wju4l*,)r r87g 4or-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 h;-flx fv*8uuat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on tx8 vu -h;uflf*he 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (03;a7, vvoogft , 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net ffov73 ;vo, agtorce on the 5.0 nC charge?

  Three identical charg/gd,q9t + mn466kv 0xcw5 ueyi1tyvwhes 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 ecvv 4tqt9ihwn,/65e 6g d w10+mxuyk ylectrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3ikha:n9 gkccmrj7 1*7e zp+ 7t.0 m. At what point, on a line betweenc m1ij+et: *khpa cng z77r7k9 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 a* r9gtm.e0 c0eddyp1( k3awf u 3ueqo wsr/*1kt the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be plpt w0 ke * mfyqgc3ke01(s*9u our.a3de1/d rwaced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wvxch 1+m4f yg4here can ayg4vc+4xh 1m f third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mac)k pe/o+. bupss 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 against thedrj sefjy2k o+ *yg4q*2 ,zay: force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is theye2qkj+:dsya g f,oj2**rz 4y proton?

  Two 0.20-g metal spheres are hung from a common y 9s(2x xfzjd2f*aq8hv( *ltp point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between t ypxtva (l djqh2*x8*fz(f92 she threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. vf*-u ro :4pizWhat is the magnitude of the electric field at a distance ovr p u:fi*z4-of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of erhz- 6-igspf h;,ob31.50 m from a 50.0-nC charge?hp6- g3i or;, fe-hsbz

  A 5.0-C charge is 10 m from a small test charge. What iz4p:btv rkn 8*j(q: tfiy e9j+s the magnitude of the electric field at the location of the test chartt *pf (9+n8vj irz4j:qb:yekge?

  A 5.0-C charge is 10 m from a small0bt a0jl lp4iv+1bj+tep m0v5 test charge. What is the direction of the electri0bbiv0em0 + 15p tatj4vl+ljp c field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the fajp7 fnuef:h 3)zt2 4borce experienced by a 1.0 nC charge placedu) 3tbjzfnfh:2 7pa4 e at the location of the test charge?

  Two point charges each have a value of 3.0 C avcf4(6re/ bf and are separated by a distance of 4.0 m. What is the electric ffa r(efc6 v4b/ield at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick anc;l trz7rbf h:u:gsy/ 9j/ izm,bj8k0d a -4.0 mC charge is placed at the 50 cm mark. What is the electric field ah; f z/0/urzj:tj7miyb,r lcb:9 gks8t the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick hx4 0h ye,9m.i -.cr8jzrumuhand a -4.0 mC charge is pl9ui4x,r chh ym8 r.j.ze-u mh0aced at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +i r3 ma7h/ zzwr b/e5cw+d4xj03.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field /j wcrizr7 dew5 maxz+b 34h0/at the point midway between them?

  Three 3.0 mC charges are at the sk:k 0j fr wr3zm2n4)q+iqx.qthree corners of a square of side 0.50 m. The lakrwj:q)4skf.n23i q mz 0qr+ xst corner is 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 side. o 2 uj jfl98/(m0sxvzb 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 the msjjv90xo 8lzmfb2u/ (agnitude 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. v zs3pe6*.hv4d rf;qaly kk, in a uniform electric field. Whkz3;arqlyv.,* 4kv.hf6 sd ep at is the magnitude of this electric field?

  A particle with a charge o+et*ge-)zl 4 ufjtw8 lf 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 placed in an electr 5bx gux;)7ajp ex+4chic field of 6000 N/C pointing dowc h b;exp4gx+a)x u7j5nward. 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 -2.00 nC. The ball is plw +:* 4shxr 2zjjlcv+vaced inside a uniform electric field, and is suspended against the force of gravity. What are the magnh2rjvx:wc vzlj4*+ +situde and direction of the electric field?

  A metal sphere of radius 10 fj) (co;uk5grcm carries a charge of +2.0 mC. What is the magnitude of u;ojk r5)(cfgthe electric 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 i22tsv3 p;j h0m)ejeifi v87eu s the electric field 6.0 cm from the center of the spher0ve7itihu vje 2);s2f p8 j3mee?