State the law of conservation of electric chac3i0)5 bujemhr;6 mubrge.

  Is it possible for two negative charges to attract each cm1:x :l1qac njs;fom+e 5*nx other?

  Is it possible for a positive and a negative charge to attract eac qzn4yhclc. ;v,e7p( mh other?

  A glass rod is rubbed with a piece of silk. During the process the glass rodsevg t*t)jg/wbe au.+c su839 acquires a positivee ts+ av 3)*esuucj8w .t9ggb/ charge and the silk

  A proton carries a

  The model of the atom showm auxy p58zms.2a+k5 os a

  A neutral atom always has jumx4ye 3vw*(

  An atom has more electrons f0 pmcg i tj)7vv .ham6 rr.gf.t)on5*than protons. The atom is

  Materials in which the electrons are bos gnf78qjaie+;/g.1bs8fd rz4s qmu;und very tightly to the nuclei are referreg.n41+sbmq ;efza8 7q/u;rs8 dj gi sfd to as

  Materials in which the electrons are bound very loosely to the7bys; uph. 9 iuf;p31xazez-n nuclei and can move about freely within the mater.npz1 p ib9zexush-f7ya;; 3uial are referred to as

  A negatively charged rod is brought near one end of an un/::5,sbqtu 0c 9;h enmdkqgedtq4nd5 charged metal bar. The end of the metal bar farthest from the charged rod will be qct:ut:/dsqm;dn4q,ehd9gn5k e5 0bcharged

  Sphere A carries a net positivehqnzntcjusskt,3i* l. nz069aq p* 4 * charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B iq p4s,tqjc*l0tnau9z.6h3s n*nk i *zs briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an ec y d2(gkr l-6vbcrv2v6;7owblectroscope positively?

  An originally neutral electroscope is briefly touched with a -v bdj*1yn5 t 6vn;tinpositively charged glan y;tn*t-b in j16vv5dss rod. The electroscope

  An originally neutral electroscope w7:gxffhuox qj/80b/is grounded briefly while a positively charged glass rod is held near it. After the glass rod w/fob/j f: q g80xh7uxis removed, the electroscope

  A positive object touches a neutral electroscope, and the lea+x q21m 0xphrfves separate. Then a negative object is brought near the electroscope, but does not touch it. What happf1 hx m0r+xq2pens to the leaves?

  A large negatively charged object is placed on an insulated table. /s gepjka8hwh bu5ad,z202aq : clx*6 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, b a/bhkhu8p6c5 ,a la02*sgqdx2j: ezwut 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 mw6 7gs4 sm0d* f;ktfuconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated byd hffl nna ks,,8ea:t/sj2 ,g; a distance d. The first charge is larger in magnitude tha ,detnjfana ,:2fsg;h8 lk/,s n the second charge.

  Sphere A carries a net charge and sphere B hur5+lu0 aeiuxh -y5/is neutral. They are placed near each other on an insulated table. Which statement best de5 uh l-ry/x0ihu5ua+escribes the electrostatic force between them?

  Two charged objects attract each other with de6ih 8g7 k hk3bj,m4frjln(:a certain force. If the charges on both objects are doubled with no change in separation, the force3mgb4idlj:jfk,7 e6 r k nh8h( between them

  Two charges are separated by: 3 kdjziw40lx 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: 3xz 40ilwjkd the new mutual forces?

  Two charged objects attract each other with a 4 s8eh)pel ydktj+.;rc(yt9 lforce 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 value?(ls8t4 tyhce)rd .p+k; l9ejy The force is now equal to

  An electron and a proton are separated by a distance of 1.itu+k -gy9ty 6zd:9m l kdb -0ci8ua2r0 m. What happens to the magnitude of the force on tuz09b2 k md i i8lyg6:ay+-k-d9ttucr he 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. Whate w+e*is a;j)7n 7sssd happens to theasn7s ;ds 7ei*)+sje w magnitude 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 v6lmztuju1bfc l r2yez667 9)m. What happens to the size of the force on the proton if the ecy) jz6tf9 6b1l um26ur 7evzllectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square/hpy v - a/hg0yd4aih8. 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 pyd80gah /hv/ 4iyha-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 an equiv1i-d*0) k m,bjp-tvllydj/ j)k tk 0rlateral 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 t 0kd pkj-dj)0*t)j/bm-1r vy li v,ltkhe 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 vectser ;kix19s q/lvfj6+or?

  At twice the distance from a point charge, the strength of z q idsmy9srj5/7q0j( -/fouithe electric field

  Is it possible to have a zero electric field value between a negatio,i j-fsjbs- 6ve and positive charge along the is fjo-6jb,s-line joining the two charges?

  Is it possible to have a zero electric fieo;s6 k:n ;ll lm6lh.erld value between two positive charges along the llr kne6hl ;:;6ll om.sine joining the two charges?

  Electric field lines near psitive point chargwl (qvw-o( xz+es

  The electric field shl6;4ltyjh 63iw swpx9 own

  Can electric field lines intersect in free spl86pogew 2 2*9rxiyrq ace?

  A solid block of metal in electrostatic equilibrium is placed k4m-y+45f5txarsg9 phv3rrsfyn w0, in a uniform electricr0rhrpxnmy 5 gva94-fs,435t+kfsw y field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollkljxc lm4,*2 x2/vz (igebx)oow metal sphere of equal diameters are each given the same chargex*zm)ib(l,l/ 2e4 v x co2xgkj, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tabley .eyf5 :o)mdc in a region where a uniform electric field is directed straight upward. What can be saiddy5 mf)e.yo:c concerning the charge on the block's top surface?

  If a conductor is in electrostatic equil , eji/t8qlh;o7au gc0z, k+vbibrium near an electric charge

  A positive point charge is+mq k5(v.g*z;2rxtp v-i fijj enclosed in a hollow metallic sphere that is grounded. As compared xi.+(2- t* jjmfvivqrzpkg; 5to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties o9jq ppi6c8 d*g;d:*l tk0drz0ajxt+of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electdn.3m4 l.8mkg frhs 1hthz 0fdckrkb,5 : qb:.ron 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 o)2dsgjiyl 3g .f +2.00 mC. How many more protons than electrons does tsgj gy)d2il3. his piece of plastic have?

  What is the charge on 1 )o) w9t:7.kbzggxg jwxk wx7/kg of protons?

  An atomic nucleus has a charge of x: qzpa6k2 y38qk1jik $+40e$. 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 -4.0 b a q3z,71t5dx vg29pccs og4dmC, respectively. What is the 3o xs 2adpgztg57c4cvq1 db9,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 1z l,s y8a6kyn2mu bv2v/pxb.* .0 N. What is the magnitude of the second chargkvn,/uy lz 8*2bx.ap bvm2s 6ye?

  Two 1.0-C charges have a force betc-t pgcwxlm,dv4*doh+9 04(;m tpsf n ween them of 1.0 N. How far apart are they?

  The force between a j k rw62oqmhbk-*o b4,$30 \; mC$ 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 1.0-N force. gd+4b 4zl:vx iIf they are moved to a new separation of 8.0 cm, what is the elec4 +dlb 4xzivg:tric force between them?

  Three identical point charges of 2.0 mC are placeq69 b1zv;zpo 7 k0zml0 s:a1ljoxpum7d 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 electrostatj7plovzb;7xqp6 z1k m0 z9l0:1s amuoic force which acts on the charge at the origin?

  Three point charges are p; g l40fkcg,nolaced 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 ml4 ,gg;kcn 0foC 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 att:5k0om 2-qs 1 txqtw/itobv u h4i;4i x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -52; s 1:vho-t5 t ii k04qwmxit4/utqbo.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 seqa)myke /y4: quare, and a second point charge of -Q is placed at the upper-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 t4kyye e:)amq /hird 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./hibt gvifw,93;mz9prx+n9/mu 2u h m10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the p/zugfm/m,twv9 3 ux +9 b;r2h9hiimn5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, p0jpe :o):z/sbi3s rf8r vyew 6lo/t6 0.10 m); Q3 = 5.0 nC is at (0, 0). Wha8 pojr:yp fz)esirbve 6l0 /s6:tw /o3t is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertix *vtuz5 snvo3(b*;a5j +tamgces of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the o j+3 uxvast;b** 5g (n5mvaztelectrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separa4nv) 8n*mb 8pzwlauf, xhp4f6ted by 3.0 m. At what point, o6 p48w,l fa)phfn4*mvbnz ux8n 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 ant t,n7 epop*5z9ivyr 1d a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zev z,5 petn orp1ty*i97ro?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. 31gek-axgh dt7p(o,l Where can a third positive charge +q be placed so that the force on ( 1,gpdx73 oa-tl kgheit is zero?

  A copper penny has a mass of 3.0 g. A total of a*i a7j+wv9qm $4.0 \times 10^{12} \; electrons$ 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 fixe ax12)0w/:kuxn6vb6 epmfnkh d proton some distance above it. How far abovemv)6 0pnabxf2xuk/kn w16 :he the electron is the proton?

  Two 0.20-g metal spheres are hu/,0u:omx b7r6b-j7 .xzalvn1 vb nwotng 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 angle between the,7 w m abj nx.vlb7v:bnx0o/uz-6o1rt threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charg gno;zvy:i )e1e of +40e. What is the magnitude of the electric fiiv 1: en);ozgyeld at a distance of 1.0 m from the nucleus?

  What are the magnitude andu mrdb 0m(icqgq872c3 direction of the electric field at a distance of 1.50 m from a 50.0-nC 3q 0gm(ciu7crbm8d q2 charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude obd2 3bqa0 d kjf cvf55*(g8tr6g:rk pwf the electric field at the location of the test c2*rdta (gdj8k3bcvpbfw06 g55kq r:fharge?

  A 5.0-C charge is 10 m 53xy,kw q qi,pfrom a small test charge. What is the direction of the electric fie5,3xyqw i kpq,ld?

  A 5.0-C charge is 10 m from apdt 5dp7 zlc9wjr-, 0prso70z small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the testw09p5 ,tdpp lr7sj0oc-rdz7z charge?

  Two point charges each have a value of 3.0n:upjh l yzd)g0k+, /o 2-wrdf C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the tw-k /),joz:d0drlwpy h2gn u +fo charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -wl.m)hzea r( apz (-)q4.0 mC charge is placed at the 50 czp ()h ew)la.z a-q(mrm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark 310l1da f ue*u n-uetlof a meter stick and a -4.0 mC charge is pl3u d10eateu-f1u*nl laced at the 50 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 at x = 0 and x = 0 2o3n.i kgrifsukw,2 7.20 m. What is the magnitude of the electric field at the point midw3,7kri.wu fg2nkio 2s ay between them?

  Three 3.0 mC charges are at the three corners of a square of siq xb)fkr991kd de 0.50 m. The last corner is occupied by ak9f k)d9 xb1qr -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 a:8j+jt )qk cti.)6hl b(mlsagre 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 kt8 jh(jb as:ll+gm). 6cqi)t(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 eo e8 etaa7v5u-lectric field. What is the magnitude 8e e-7au voat5of this electric field?

  A particle with a charge of 4qra*id5xmhf e2 bb/ayf*)1 4s .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 -uma4ka* hxxuv p i4r7;.)sij0.120 g is placed in an electric field of 6000 N/C pointupvx.4 a;j4xmu )7a*iks- rihing 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 - bkqnay0*)z,s q8 zpe w,jv)ei))ek 7m2.00 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 the el qk e)ne)8)qy)mi7w v 0az,zje,*bpksectric field?

  A metal sphere of radius 10 cm carries a charge o z5s79knv37rr.;cja aa nn( tof +2.0 mC. What is the magnitude of the electric field 5.0 cm from tnvna.j( o ;st735arz 9knr 7ache sphere's surface?

  A metal sphere of radius 2.0 cm carrib 15wvj;mp ai bn jo+sc:3g3w6es a charge of 3.0 mC. What is the electric field 6.0 cm from thvc6+:mwws ojn5;3jia13p bbg e center of the sphere?