State the law of conservatioaoi m9n)f/;b5kp6 vhen of electric charge.

  Is it possible for two negative chargdn mrdj.21e q9 cmg 9i:re6udw3 s(w*zes to attract each other?

  Is it possible for a positive and a negative charge to at8rw0o/9-vk biy3urz vtract each other?

  A glass rod is rubbed with a piece of silhrp4/ydx nu 8(k. During the process the glass rod acquires u(ph4d/ 8nx yra positive charge and the silk

  A proton carries a

  The model of the atopy lts; 8 dp6f6c-bvz3hd5il2 m shows a

  A neutral atom always jg;6if,iv 2vhc)k1 s9xiqi4whas

  An atom has more electrons thco3aoebu0j+6cqk rs jq5txd54 )k:r 8an protons. The atom is

  Materials in which the electrons are bound very tightly to t3v u7p nm4+4,mq7s+pcdiy fkm he nuclei are referr cmpkvq++7 mm73iuynp 4d4,sfed to as

  Materials in which the ele m2frap8*n,v wctrons are bound very loosely to the nuclei and can move about freely within the mate* avwr,nmf8 2prial are referred to as

  A negatively charged rod is brought nea :qxosb+2 e+8hzhn .rfr one end of an uncharged metal bar. The end of+rhqeoh8x +nsfz .b2: the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They )/y3lsnjox 2zo((vo l are placed near each other on an insulated table. Sphere B is brieflyzo(/lo v oxjn3 s2y()l touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope :0 um/ih +k fvn(qr;gct9 /pacpositively?

  An originally neutral electroscope is briefly touched with a positively chargez1q64j; 8rlrzbzg;g ad glass rod. The electroscope ; 4rbj;z zgrl8zg16aq

  An originally neutral elecc,*dmx qwbpk.q:t: e* troscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is remotc*x*ew :pqq,d:b.mkved, the electroscope

  A positive object touchefswn4w*v/ 0olqmt3 x 6s a neutral electroscope, and the leaves separate. Then a negative object is br6f nv03to wqwxm4*/ slought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated ta/n x2rs a,ur;cble. 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. rcur, sx2;na/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 the Coulomb cf1y)1) in(dv rkx+ufsonstant $k$, which appears in Coulomb's law?

  Two charged objects are 5z4 ) *w2wt xou3ia-ut gzorz+separated by a distance d. The first charge is larger in maga5u )rio4 guzwzwztx32- *+ tonitude than the second charge.

  Sphere A carries a net charge and spherpcvbo2( 3b6v e, riv0ll8aay )e B is neutral. They are placed near each other on an insulated table. Which3o a,0lb)pyilv6va (b8 cv2er statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charw wptkg+915wbeo5od7r x) a9cges on both objects are doubled with no change in separation, the force b5kwg d9bwt9o+1 5) x7coa rwepetween them

  Two charges are separated b .,dp8kw9,kanvsro7 ay a distance d and exert mutual attractive forces of F o,a.pw9 rn 7ds8k ka,ovn 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/l/7z hp;bqmctttb * 2 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 value? The force is no;bt q/hlt* /c27m bztpw equal to

  An electron and a proton are )8p;q 9veogkcseparated by a distance of 1.0 m. What happens to the magnit;pq9vgce o8 )kude 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 m. W7phka,rf/ya/3 /fg sd hat happens to the magnitude of the force on the first electron if a seco3kp,/ fr/ fha/7yadgs nd electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What ho qmv+z m1 clf;q67k/pappens to the size of the force on the proton if the electron is moved 0.50 m closer to the protonzq+ k c76fo;l 1mmp/vq?

  A point charge of +Q is placed at the center of a square.m)2rslkn/ p.q 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/2 nps)r.qmlk 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 equilateral triariv)1q nhp q0:d/el.bngle. 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 charge dvrdbhepn/ 0. iqq)1: lue to a third charge of +Q placed at one of the other vertices?

  Which of the following is not csehnc /bei)qr+92c1h 7ard3e*9 )vrh kem /g a vector?

  At twice the distance from a point charge, the strength of the electricb5zyp) 0 2ulsb field

  Is it possible to havegn)vxcv p q0x z0(n64*gy(soy a zero electric field value between a negative and positive charge along the line joining the two charge 0sxgv)y(*gc4qp 6ny( z0xvo ns?

  Is it possible to have a zero electric fielb x(s x)ssr n//j-rpfk3 gj:tb*n;v1q d value between two positive charges along the line joining thep;q(ntg/ j j3 rb/-v*k bsx)sx:f1nsr two charges?

  Electric field lines near psitive point chargesjss ij 13j,up5m.psj.

  The electric field showb a:; ;m;lu65kookct vn

  Can electric field lines yloj2)fa3639tk1gvt6u ocwf w 9uyg6intersect in free space?

  A solid block of metal in2lz/1fa(uk rp;2mfnbps5 .jz electrostatic equilibrium is placed in a uniform electric1s;nz2a/l 2z5mp.kf(fpb ruj field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and atrtqmo01w y-) hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between r 0tq1y mwo-t)the center and the surface is

  A cubic block of aluminum res9j;:1kmtxo g+/-pn eccska+c ts on a wooden table in a region where a uniform electric field is directed straight upward. What can be sai 1 kxocm-;sc: gp k+ja9t/+cend concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibr 7rs4h382noolwc rm.vium near an electric charge

  A positive point charg c(1t4ke(hog,hsh 5qr d8djk8 e is enclosed in a hollow metallic sphere that is grounded. As compared to th(q4d sh5eck g r(kt,o1hhj88de case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of condrmt9s 1cdk ,z l+lyl54uctors in static equilibrium.

State Gauss's law.

  The charge carried by zqi7uv* +/(lrfsdmr0 one electron 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 +2.00 mC. How many more pr5y mz9sw,ubg*r9uy 8wotons than electrons d*9y5w 8w9ub,zsmgr u yoes this piece of plastic have?

  What is the charge on 10fdsg. nk-, vr kg of protons?

  An atomic nucleus has a charge k zund9p.l7p8ay 5:dt 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 2qhoo.t z0yx:hvd;nr xm. los6m ,03n 0.0 and -4.0 mC, re.m:zyqn0,0.6h0 onxlodmshrox vt ;3spectively. 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 th;po*v sg,o*+ lv g17z u 6phl4jvuzfo0em is 1.0 N. What is the magnitude vh7z 6,fpvvug l0 u1*oos+ *4 jlpoz;gof the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far h)6eh7gc9 swhapart are they?

  The force between a 0 r:-v5 vp+ymuxyui3k$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exper(8wo 2oo6z / flphh;sc+n p8ayience a 1.0-N force. If they are moved to a new separatio 8oocpfl 2oh(y z+ asn;phw68/n of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are plaw xg 5smzr:yll;2/xy6ced 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 electror5lzs x yg 2m/;yl6:wxstatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge t+)xesro s1 g 2a10gek-zj+qah/py.oof +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 qo +2x 0jkgzh 1gsp.+a)e1ar t/syeo-acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 262ti3yn4f l m/z pcim dyb58-s.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x =cnti 2lipfs z-/3mbyyd85 m64 -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed ate6l vctg- ppk*/,1blt the center of a square, 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*6/t ,lkptvle-gb1c p 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, 0i3b xvif1t 7.n); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0n.vt1fi7x 3ib nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -149fg ).kubpfhgydx t6z/ g.x+.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 nC charg9ugbggffx./+ k)ztd xp .y4h6e?

  Three identical charges of 3.0 mC are plawat;i-1fgqn *;jj (zn ced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic fornj(*gtw azj i-fq;;n1ce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which azx j(ajva:z sp 99w4d.re 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 tha vx9jjsaz.waz4 9:( pdt the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the ori:yi.;gdbf/2f7(oiw s mg /hlegin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third chargl;2f(h/gb eg fdm.woiy /s7: ie be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a.aypu + tm:sqf*4e8a4p Where can a third positive 844ytespq*pa:famu+charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3krifekvucy+pkm.7 4. vu01h: .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 agaj ak/s1** ii3 fv/6xiccb1dn.+ndms oinst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is thbdkisvn oj6/ 1 d/c 3ni1fs ax+*.ci*me proton?

  Two 0.20-g metal spheres are hun rych7-2 8ziaes3:jzcg from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsejcs h:ar3-87 z2yzicion 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. What is the magnitude ofdv(pn uy8yl7 7 the electric fie8vpy (l7u7 ydnld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a disnf0 h;vpu 9kgjaf:ud6s8( u4 qtance of 1.50 m from a 50.0-nC c j9us : f f6d8qg4u;vpk0h(anuharge?

  A 5.0-C charge is 10 m from a small test charge.0 b sqkmi*q yxxjg:x 6)+6.csn What is the magnitude of the electric field at the location of the teqjsgynqmkc 0x6bs6i*x : )x .+st charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dir6lwdc +yle j59ection of the electric field?9+ej5d l6cl yw

  A 5.0-C charge is 10 m from a small test charge. Whq tjz2, nak3*pat is the magnitude of the force experienced by a 1q3* t kzja2n,p.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 by-k(5qhfodn*8uu,i2n cxynh ; a distance of 4.0 m. What is the electric field at a point midway cnk2- *h;xh5nd(i u 8n ,uqfoybetween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter s2**,5ti py bsh jpgs.btick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fi*5bji b2.g*ppt,ss hy eld at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stic-y bgz/y +j1ask and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the eleby+z/-aj y1sg ctric field zero?

  Two point charges of +3z2 y7o8 77xje7iu, wkuan7k zk.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the elec7ianok z7uuyw 7jk x,e72 z7k8tric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. T5iczhj(*+ w35 jgsab uhe last corner is o* jhgz5j s53wau +(icbccupied 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 s t)ek6wpz ktd11u )el:ide. 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 is6dw ttkklpe):zu )1e1 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 awe 9nlh;a2cq9 uniform electric field. What is the magnitude of thilnqch2 e;9 wa9s electric field?

  A particle with a charge of 447v 0y p vt3o6g9wlhid.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 9ufugq6.i(3pqiwwr 7.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must bqq6u wf.r9(w p ii3gu7e placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge o;n-no1i/oy +l 7/ qlpdl 7rqxwf -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are theoiywo7l nl7 ;nqx rp-l1/+d/ q magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the ma)uzk kv3zs-q1u*zd9c gnitude of vu-z*zszkuk c91d )3qthe 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. zf0 .mfos yzuek9 wsd /w,::w/ What is the electric field 6.0 cm from the center of the :e: dyz9uf/fo/wkwsw,zm.0s sphere?