State the law of conservation ofkt6p2zfv yqbs6+:4eak n fo5/ electric charge.

  Is it possible for two negative charges to attrakgqfai+dfij36:se;08d by e(ct each other?

  Is it possible for a positive and a negative charge to at, / t*rdhyia004ih j2uffp 7nlxtm/s 7tract each other?

  A glass rod is rubbed with a piece of silk. During+i bf2n) ,gzgtawky+t0m0tj + the process the glass rod acquires a positive charge and the sil00t+) fwg+ za+tmynbtj ,ig2k k

  A proton carries a

  The model of the atom showh pdll ;p2cnz8wr,i6( c-j9yus a

  A neutral atom always ,q1ajwdzevjc7uni,:x hu1 ( 5has

  An atom has more electrq:ud;fc uq) p.(a-xjrons than protons. The atom is

  Materials in which the electrons: eay/jf,hf j7 are bound very tightly to the nuclei are referred to as,/f yhe:fjaj 7

  Materials in which the electrons are bound very loosely lrg c/q gq+-8ftg1mq)to the nuclei and can move about freely within/mc +fg8lqq -q)rtg g1 the material are referred to as

  A negatively charged rod is brought near one end ogyxqet bl4y0l+cy+1bi)fcxr p70w1e; la-f 1f an uncharged metal bar. The end of the metal bar farther;yfc t x xbp1 g0+l1 wie 4y-+7elyf)ca1qlb0st from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are t 7r34so /200tf lo ffxgwio:yph26d pplaced near each other on an insulated table. Sphere B is briefly touched with a wire that is groun fg xotpdfrf4o7:h02p3/w0t los6iy2 ded. Which statement is correct?

  How can a negatively charged rod charge an electroscope podc8i dd *v):vcsitively?

  An originally neutral electroscope is briefly touched withcq .td(x7sg1c)uh rh 6 a positively charged glass rod. Tc tchr76s () uqhd1x.ghe electroscope

  An originally neutral electrog5n sb9* jodi7scope is grounded briefly while a positively charged gla sbgdi59*oj7 nss rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral elect1jpphte zj2 qu luphj2yt2jpc16o6; . 54yf:e roscope, and the leaves separate. Then a ne2p e .tq t25u oj:66 pyz1 1yf;ucplhhe2jj4pjgative 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 insul b.ob99ne .wwxsplj a.4bnv /l8s;ru,ated 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, 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 cha9 x jubor.9 nlsw..s4aevbwb/ l8np;,rge on each ball?

  Charge is

  What are the units of the Coulomb cow-;o pv)2bwbf c h n.nj+bfq.;nstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance5lm28 ,7qmvgnj9 imo f d. The first charge is larger in magnitude than the second oj2nq8 9v ml,5gmmi 7fcharge.

  Sphere A carries a net charge and sphere B is , :wxn w rdw9pg3ylm8 uuf9dc081d-i dneutral. They are placed near each other on an insulated table.d1 cy 8df9dn-uliw9pmurx03 ,dw8:wg Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain forc3uu h+-oi qr1glg6dat9p+n1ye. If the charges on both objects are doubled withpg1rg9u1n6+o t aq- ld+yu3hi no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces of y5gg(aaq5 dx z5+vj3lss)x ne v,sr;/F on each other. If the charges are separated by a distance of d/3, what are the new a)3g 5 s lz/5dr( vnvx,;gqayssx5j e+mutual forces?

  Two charged objects attract each other4r2pdz hue3yp0be, we1q :;xk 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 it3wp2z, e1ydhrqb:ep04x; eu ks original value? The force is now equal to

  An electron and a proton are separated by a distal+ y nr02e ue8,1bzkqb mg53eince of 1.0 m. What happens to the magnitude of the force on the proton if a second electronr zey+30n58m2e,qbe li1bg uk is placed next to the first electron?

  An electron and a proton are septa+2ti rzw7:esl58 ltfg s0/barated by a distance of 1.0 m. What happens to the magnitude of the force on the fils0/7 i8tgwre t +:fab 5lzs2trst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1bi.sv4(ho * s 13iywhj.0 m. What happens to the size of the force on the proton if thei3b1h (woyivh4 . *jss electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squcx*2o b,512lwri ooyiare. 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 c r52*,o oilwoc2b1y ixharges 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 equiq i6:rss4lv3 ,qcl-dg lateral 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 the magnitude of the force that acts on the center c3qd-, g6 4vqrlis:slcharge due to a third charge of +Q placed at one of the other vertices?

  Which of the followin;botk3f2 x(k /9wziosol *u7-x k ext/g is not a vector?

  At twice the distance from a point chv,y .so*hvp/zm)v gj)arge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative anr1;mu b9nm38kgsy,wo d positive charge along the wm,3 sk8uynbmo;rg9 1line joining the two charges?

  Is it possible to have a zer+y1rwen -w ,bio electric field value between two positive charges along the line joining the two 1 ,yr +ebw-niwcharges?

  Electric field lines near psitive poinp4ol .bdvpj*fv.3 8upv j4 9m(6tzugu t charges

  The electric field sho3fmvb((n yobx5 , .nit7vxfq3 wn

  Can electric field lines interx); 9geojsg;usect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform einq :5hcv / rkfsg2:x5js0)lbf0 ed x*lectric field. Give a statement concerning the ele sfs0dv q)c 5in*hx/::0rj2l5gb xk efctric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere6y+d/ qpnf -ur 7cj.vr of equal diameters are each given the same yrd v. n/q-up6cj+ 7rfcharge, the electric field (E) midway between the center and the surface is

  A cubic block of alumv hhz 3up c6vn2qr5-b0inum rests on a wooden table in a region where a uniform electric field is directczn-hpv6 20 huv rbq53ed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric c.kd.g( +,4dukqwcjq6q q72gp k(uomyharge

  A positive point charge is enclosed dn+8x r+ 7s(ehm g8wx tqbd,( *i-dormin a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point di (td,(8xiqw h*m ng7b md8rxr-o+e+ds rectly above the hollow sphere has

State three properties of conbkz /+6xrrvc o y6v+e 9rbi/)ybhvh 8/r,gkp 3ductors in static equilibrium.

State Gauss's law.

  The charge carried by one electro,(j qyv*hd v *0;0qa+; twzaw.asxd bfn 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/vqfnlgtak:a jt( oxy0.35l 6 .00 mC. How many more protons than electrons does thisx/:n l(fj6v oyq ka5 .l3t0tag piece of plastic have?

  What is the charge or 5*vydb+u8e0j v(mk, ptra w+n 1 kg of protons?

  An atomic nucleus has a charge ofke0uk6:0s:m lh m,tgu i-87l bqtrkw( cb2j n( $+40e$. 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 valu k7kdq+o:tendaj(.a) es of 2.0 and -4.0 mC, respectively. What is the +ea:7.() jq kkanoddtmagnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.09,nyhbb:glw dk -+ xil6r) tt0 N. What is the magnitude of the second charg tk9g6w+)nxh: lr0t b-ldyib ,e?

  Two 1.0-C charges have a force between thaa )kzo..rs d5em of 1.0 N. How far apart are they?

  The force between a :as(nx bzr6dm5, c4h bz16kdx$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exper8 :olvb-1imxnqe jw .0ience a 1.0-N force. If they are moveoj-nw0 miq:xe1 b8l.vd 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 first ca5/ ntn7( flfshar(t7 5lf/sa nnfge 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 the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.h9npv,. dq f(f0 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 the qh(n.fd f,v 9porigin?

  Three point charges are located at the following positions: eiqwl(0 bvz:jqs. 74gQ1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 q.7 vl(j4:w sbge0iqz = -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 ch jfo 68bbo tt:zew:+o5arge 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 forcofb+tw:t5b:oo8j z6 e e 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 9:i0. -y m ghipplp9ktea,, geat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What ish ,ipp:,k0l m gy.9e geai-pt9 the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0)schxf+ d,1f s7.b- wqse. m2tf; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0. fs 7tsfde1.h,xcw+qf s-2bm nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilat3q8 *:z07qxhxs)q ergm y 7egperal triangle which measures 30 cm on a side. What is the magnitude of the electrost07qxsgqh g)7* y mpx:3rzeq8eatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whqt,c*m cvns7z)4e pv 2at point, on a line between the two charges, would it be possible to placv*c q,m4v tpe2)snzc7e 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 onhy i:6z7su cjp3*sa4n the x-axis can a third charge be placed soy4i6uj s7 *hns:pc3za the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed u2f rr )p8o6wuat x = 2a. Where can a third po po fr)8ruu26wsitive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3u9 u,pt, c*tpm.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 the force ovd4sw-0) ih spf gravity by the attraction of a fixed proton some distance above it.sipdv) h0s-4w How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncrz,ks:z))c5:k ugt. azwup ,/kzj,b d( dfpx .onducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betweez bp ,jk:,zrdp/),(wtzazgu. fd.su)ck5x k:n the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. c,s-h7- gtf0 ec-cqb wWhat is the magnitude of the electric field at a distance of 1.0 m f -0fs7q--hcccgtb w ,erom the nucleus?

  What are the magnitude and direction of the electric field at a dista +prlpg;h d p8+,l)x )rycm/cznce of 1.50 m from a 50.0-nC char)rpc dyxr/+lz ; g+lh)8mppc,ge?

  A 5.0-C charge is 10 m from a small test cha,h wngi c.783djg1ydjrge. What is the magnitude of the electric field at the location of the tesn1g 8,c3gd.7 hwydjjit charge?

  A 5.0-C charge is 10 m from a small test chargex 6*c jc.euozu.dzfik88 gypp5.9. fy. What is the direction of the electric field?ycp8.pikx .z* uo..8cfdgfe6zy j59u

  A 5.0-C charge is 10 m from a small test charge. What is t a1frz+j -qdzilt+ 9t:i:jxc) he magnitude of the force experienced by a 1.0 nC charge placed at the locatilca9 iq+fdt)it 1 -:zjx +j:zron of the test charge?

  Two point charges each have a valueyo4 yvh bsy k.1a9,w2t of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betweenyy2 9vha.o,1 wktys4b the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick ahw+;zk5e .+xp hrz-y+/ qlo3 kme )mbbnd a -4.0 mC charge is placed at the 50 cm mark. What is the electricko /ze+p.z-++ ;e)hb5mr b hy k3qxlwm field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sti+ nki ;ung(q u+z;828ghbweh pck and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges ig88 pw2ki+zh g;nu;(b hequn+ s the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are pla+kaxszg94j;z,mwqo , 7x v/ emced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the p7vxko ;w gsmz,9 a4x ,em/+qzjoint midway between them?

  Three 3.0 mC charges are at the three corners of a square ofcb+ r;gejji 1; t;im:g side 0.50 m. The last corner is occupc; ei ;jg gbj;tm+1ir:ied 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 placey gqm,zgp/l.,a* bt4c d at the corners of the square as follows: +4.0 mC at (0c gl. ,z4/gta bm*y,pq, 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 e;u lh2oy1q8gpt8mn h5lectric field. What is the magnitude of 1thplnqyugoh28 8;m 5this electric field?

  A particle with a charge of 4.0 mC has a mass ofw l 8t28.kx fx(to(s3eww(ar f $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of f-e fv 7z;f/,,u* swchocjj; zmass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be pl*h-/evcfu,f ,jw sf; 7j o;zzcaced on the ball for it to be suspended?

  A foam ball of mass qj +qzur u:h1,dc7l3 ;b ;jfuh0.150 g carries a charge of -2.00 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 elecf;z7dq3:h;,jq1ju+ luhrcbutric field?

  A metal sphere of radius 10 cm carries a charge of +2.ct.zjaiwxj*7 e .x.6k0 mC. What is the magnitude of the electric field 5.0 cm from tacwjz*xx.7 e.tij. 6 khe sphere's surface?

  A metal sphere of radius 2.0 cm car otu xd8x6wn18 ob-zx;ries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of8x t6odbu8; ozx- wxn1 the sphere?