State the law of conservation of ele qv.qn rj)e m 7nkz*9 11z+v6htmfr*ugctric charge.

  Is it possible for two negative charges to attract each om s:cojg:p o m:ut);h;ther?

  Is it possible for a positive a ,rg7qnr 8ry5wzy4 svb*v9 -onns/d8epkes 86nd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the processn mnb/lylkui8 )/-; g1svpl(s the glass rod acqui8sv(sil1n mu l/-yb;)nkg /plres a positive charge and the silk

  A proton carries a

  The model of the atom shows aha8s o36n e/ka

  A neutral atom always haf)q1 kxa 9qvu1s

  An atom has more electrons than protons. Thenl 3uih1 xc:2ywq r**i atom is

  Materials in which the electrons are bound very tightlyo3w5a-z 6kew hl ow69k to the nuclei are referred-h5kkz 39 6oweowl w6a to as

  Materials in which the electrons are bo:iksuftefxrhky-3nt/ + 0i9:k.j+ s bund very loosely to the nuclei and can move about freely within the ma0t/xkk 3n-kye+ tf .s ihs+9j:ibu:rf terial are referred to as

  A negatively charged rod is brought near one end of04np-ridu n hrw8pi.;)nj( km an uncharged metal bar. The end of the metal bar farthest from t (n ri4uw 0i.-;rhm8d)jknpnphe charged rod will be charged

  Sphere A carries a net positive charge, and sphere B i0 civ7rq,b:+eg9wk xea v+h*cs neutral. They are placed near each other on an insulated table. Sphere B iebwg q+x9,a+vceh icrv:0 7 k*s briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrdc f+ (7mqlfj,4blda,ykjm8o(2 o ) ewoscope positively?

  An originally neutral electroscope is avsjok3pjhk,ue8qf- j k54(, briefly touched with a positively charged glass rod. The electr ukp ko,,-(j43e8qjv fasj5hk oscope

  An originally neutral electroscope is grounded briefly while a positively charg+e d.9xtig ew4*(w xnmed glass rod is held near it. After the glass rod 4ewxnie. 9d*t+ wgx (mis removed, the electroscope

  A positive object touches a neutral wr wv n+r +8l5v4ypmb3m6edu+electroscope, and the leaves separate. Then a negativer+y4+mw vmnb68l p+veu5 3w dr object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated wu7i mcy3c0l*yjawu e 37 ix6/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, j3liuuyxcaw07 im /7yc 6*3ew 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 ther jz t- 9s9+iol2a9shs Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancex5lo5g -qko ( zlr4l)p d. The first charge is larger in magnitude than lllk- z4x (rogoqp) 55the second charge.

  Sphere A carries a net charge3myes+bw w 6+h27hbru0ksmjzov; g ( 3 and sphere B is neutral. They are placed near each other on an insulated table. Which statement besmmv2r7gjyh(+h 6 +bouwz3s; wsbk0e 3t describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges oa6(hg(ujq+sbr(i* jn7pi .f zn both objects are doubled with no change if+ g6rn(.hbij7q pu *(jsi(zan separation, the force between them

  Two charges are separated b/ twzf9tq8q*h y a distance d and exert mutual attractive forces of qhqt 8w /t9*zfF on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Wk9v+6 mo t xhbjh,wm4(hat happens to the force between them if one ch, h4b +otw9xhj( k6mvmarge is doubled, the other charge 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 distance of 1.0 9bf* e/u+gt)dhwz8o u0qq3tjzqzv*8 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electron?8 b8+/et*0vo jqfz huqqdz*t w)ug 93z

  An electron and a proton are separated by a distance of 1.0 m. What happensoh2givd8 (dl.xq 8n5 y to the magnitude of the force on the first electd8gd x5o (y2qlh n8v.iron if a second electron is placed next to the proton?

  An electron and a proton are separated by a di: wjree1lwg e7n4fr7 .n o7xy+stance of 1.0 m. What happens to the size of the forcl7ww74. +7enfn yrjx1ego r :ee 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 of a square. When a second.w (u/j +l ahgm,x5:kaobxn 3d point charge of -Q is placed at one of the square's corners, w3,bk+jgh(aon:/. xmlu5 d x ait 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 square?

  A point charge of +Q is placed at the centroid of an equilateral6z( r o;bzk9f6ar/jzrm62iz. ddpp e( triangle. When a second charge of +Q is placed at one of the triangle's vertices, an 9 zbp rpz./zfirzekjo 6 ;2d6((am d6relectrostatic 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 n+ 1 o:/-qubo;jbdhvpm pj1)crot a vector?

  At twice the distance from a point charge, bubw/::9 d e.mbxro)nthe strength of the electric field

  Is it possible to have a zero electric field value between a negative an/ 6 nb4ggqyg7td positive charge along the line /gggy 6n74tqb joining the two charges?

  Is it possible to have a zeroew-(q;fw kt g0ljh3o5 electric field value between two positive charges along theh3 wlq -f(w0;t 5gkejo line joining the two charges?

  Electric field lines near p1 xl6wfqr rq *a38twy*sitive point charges

  The electric field sho o bix io0f10skm,r68mwn

  Can electric field lines intersect in free ,uc 72i8iw0/v rulynuspace?

  A solid block of metal in electrostatic equilibrie or71sx62erny2fv1 i um is placed in a uniform electric field. Give a s 1e2e2x 16no7rivyfs rtatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere ofyqp+fw4) gu(0bif4n y6cf 7ax1: jufy equal diameters are each given the same charaf1n6 u0+4qfupi) y jc gx:4fy7bwy( fge, the electric field (E) midway between the center and the surface is

  A cubic block of alumva(.f vz c;ux3inum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the blocka;uxvz(v 3cf.'s top surface?

  If a conductor is in electrostatic equilibrium near an electric chdz*ur+e,w 8 yx*b8/gw-y sytharge

  A positive point charge is enclosed in a hollow metallic sakw708xff:8t6pe b1nu4 atk g2yng r-phere that is grounded. As cogywnk1b k:7a-p8xu08e6 t2 gn4tfrf ampared 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 static ewni7e8u7efz8+(3i j en 9iaedquilibrium.

State Gauss's law.

  The charge carried by one el z)dm36-0cxl+vsh-zf2g b :tw ibe(jy /ri7on ectron 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 h:omofaj r4a4o7 u7w5 vas a net charge of +2.00 mC. How many more protons than electrons do7moav r7o a fo5w4:4ujes this piece of plastic have?

  What is the charge on 1 kg ofcc733jki6y3c4q 3t tu k)qljo protons?

  An atomic nucleus has a charp -fd; ulrbco 5rm(98f, l8lqxge 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 a w4/iuic4)5u0v h b/63rkgqyna8qcaz nd -4.0 mC, respectively. What is the magnitude of the4uzvncb5kg3aay04q/huciw ) 6q r 8i/ electric force between them?

  A 1.0-C charge is 15 m eyazl3vy5 - z/from a second charge, and the force between them is 1.0 N. What is the mayz5v 3/azyl-egnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are thj3 yrtx6u c)0iur9;zsey?

  The force between a 8,lq) psw4 6vh(y5muce tibb.$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially d cei:h; z)*y te4jah:2.0 cm apart, experience a 1.0-N force. If they are movedteze)ad;y j * ih4ch:: 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-axisuk*c+he +6tql. The first charge is at the origin, the second to the right at x = khu tc*+ +e6lq50 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 thee2jb ;j-y+ 4 r es):atiljlq,;qv .dnj x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x =4,l q jd)j: a;njil;rqsy2 vb-et.je+ 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 at x 3q p2k swk;kc7= 1.00 m; Q;2s pcq7k wkk32 = 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 charge?

  A point charge of +Q is placed at the center of a square, and a second point ch8i6;ks4fwtar,mto(;uz u / ht r4 9jksarge 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 third charge of -Q if6riktuo;,; j/hu 4zr9(ws mt4s8ka ts placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 ; )abfud fa0y21qje2ht 4-ca h= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net fy1afc q-;dh 422aj )bhtu0eaforce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at;es9jshvlq 6b 1u( wf, (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction, 6uewls9 ;qhjs(fv1 b of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equvjjtvwqk9w-/tvtq3f2eb 4 oo / u(4-l ilateral triangle which 3 4 qtvjo(j/ qlofwtu/kvtb4v-2- 9 wemeasures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4iv43x iaxyb6;ewe) ,nQ, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force ia;vy4wnix,e3 b ex)6 acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at4qcpg4*f;j tebyv1duo a2 a(( x = 4.0 m. Where on the x-axisf g b(v2c 1 4jadptyoe*4u(a;q can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at tv n+qz1t*g,gj)bbw t( uykl+- p7 p9oyhe origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zevtg,*w+q9zyt ()p-bj7ykn1opb+ u glro?

  A copper penny has a mass of 3.0 g. A tm *:fa0krs(cu otal 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 attrac.csl7hns2c.lc 5cw bg,k(q5 otion of a fixed proton some distance above it. How far abovn(wbk2s lc,55cg .olsqhc c .7e the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threadszc4d qzog 9*:vld/bm8 which are 30 cm long. Both are given identical charges, ando: ldb/gm c8vd4zq 9z* the electrostatic repulsion forces them apart 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. Whywkdw90s5; byxjw6(vk kn1 z.at is the magnitude of the electric field at a distk(yvx650z ks;9wbjdwyk w n1.ance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dahi 2isp xv.d:cy;0t8 istance of 1.50 m fri ;:vatdic02x yhps .8om a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitu.bt7 n6upmvh ge*c49f 3q5u w:sm g.tyde of the electric field at u6f:bvs e5gtn74t3.mh .mqcp*w9 y guthe location of the test charge?

  A 5.0-C charge is 10 me apo rk1sztrvr6-,5 ( from a small test charge. What is the direction of the electrico(1 ea5s rprtv6kr ,-z field?

  A 5.0-C charge is 10 m from a small test charge. Wh)+c .ky cp9yqoukc/; p2hzzw+at is the magnitude of the force experienced by a 1.0 nC whc;++ /u9p zczkyco k)2p.qycharge placed at the location of the test charge?

  Two point charges each hab(mkc o3k-e7vk8 8aqmp u8ct*ve a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chv-acme pt 8ok3bu87qkm (k*c8arges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0dw)fexng5)v*-: w ddy mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mark- wxvd e5:* gnyfddw))?

  A 5.0-mC charge is placed at the 0 cm mark o).tg-1zr f mg5zkrs; r8 l,alk(9wfl nf 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 k9fl nrgr,5sagfm8-)(1 z l;zl tkw.rcharges is the electric field zero?

  Two point charges of +3.0 mC and -7.0y 0,(dfe-hu5o2o ahm n mC are placed at x = 0 and x = 0.20 m. What is the magnofo uh e,2h(ymn-0a5ditude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corng,wa :b4xb kn:ers of a square of side 0.50 m. The last corner is occupied by a -3.0 mC chargegb:kwxban, :4. Find the electric field at the center of the square.

  Consider a square which is 1.0 z7n9 mex *7 qrxu:ir7om on a side. Charges are placed at the corners of the square as follows: +4.0 mC u7x:r mn7iz ore x9*q7at (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 +8ibbo( znsrf-gs elu t7v*08is placed in a uniform electric field. What is the m7bt rio-(s nl s*+ eg8buz8v0fagnitude of this electric field?

  A particle with a charge of 4.0 mC has ay -ti6q7 x.fri;e3e dzbxoaf7+ x wr6. 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 pl-w7 s :0z ps*v0et:5b.qmhnmed 1ezfeee * 8diaced in an electric field of 6000 N/C pointing downward. What chargef.te0 d-sdpi1 58vh*wne:bme: sm zeq0e z7 e* must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2g.+gpbgf cp x 6/uo,ds *i4sr3.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direco+*, g 6up is/g4.cfbdgxs3 prtion of the electric field?

  A metal sphere of radius 1m9xoq1 b6 bup-c gw*cv00*bj h0 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0*xp cb-vhbu oqcm gw0j9* b106 cm from the sphere's surface?

  A metal sphere of radiu7 +m1ts;z;.i3erw twge5 ugp tcf64lb n2wjv4 s 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm fromg;tj6w;fem1bwtls ig. 5pu+ 2 t zn7ce 34rw4v the center of the sphere?