State the law of conservation of elec il.eo0ttp/5l a2s4uu tric charge.

  Is it possible for two negative c z b dmu8oa3 6)ob4.z7p(kqywyharges to attract each other?

  Is it possible for a positive and a negative char7htowwpi1zv g:g ;/s1 ge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gf8zeqx(sc-u3d; s:xb;bx4cy0x/ v pu lass rod acquires a positive charge and th0bud qs;/;- (cpvxxuzx3fye4s:8 bxce silk

  A proton carries a

  The model of the atom show,z0q)ao)ulghyefm(d 15 tt: bs a

  A neutral atom always haqf e3 d1r;91hdec;klu y;0rr os

  An atom has more electro g8 io 3ur bujc15(hukl/j-yyhy0)3i 8h;xfnbns than protons. The atom is

  Materials in which the electrons are bound very tightly to the poui660nf .9 hcifrtinl x15;9f5 kg3frea j5nuclei are referred tif5ljh5 kg fn3r6ac90 ;in xu 6e5.9p o1fritfo as

  Materials in which the electrons are bound very loosely to thdfdolvi8c s0/ ge- b9n+yh d-*e nuclei and can move about freely witd+0civbohl9- fe-*y snd g/8dhin the material are referred to as

  A negatively charged rod is brought near one en . vue3;gfwbz)d of an uncharged metal bar. The end of thbw.ge;) vuf3z e metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neuquv)+ n,je d0/ gm,mnvtral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is gmn/u+nv)m d 0jq,e,gvrounded. Which statement is correct?

  How can a negatively charged rod charge an electroscobon y u qm.1(29fe1endpe positively?

  An originally neutral electroscope is briefly touched with oix +zt7 6jjb5a positively charged 5b6+i zo7t xjjglass rod. The electroscope

  An originally neutral electroscope is grounded briefly w,mlf4nf z9i*yyb 7wg. hile a positively charged glass rod is held near it. After the glass rod is remov yny ilfm,g.*zf79w4bed, the electroscope

  A positive object touches a neutral electroscope, and the leavesf0a63tcqkud 4 xmc)z5d5kz7j separate. Then a negative object is brought near the electroscope, but does not touch it. What happe5 kdc6 mad)xkqz0 uf7tjc54z3ns to the leaves?

  A large negatively charged object is placed on an insulated table. ccb/rz ybd i 9+jqj2+(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 c+d29+q/ bby jirc( zcjharge on each ball?

  Charge is

  What are the units of the +s :ym zbu)vp 5lh60*rxnjch2Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge . 5xhtxgg9zl02nj*5vl;ndo;+gos r z is larger in ma.xjlzh9;g5o rdg ogn n2 ;*t+0szx5vlgnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. T e(mmvfe,4e 6mg2 lseg q293fnhey are placed near each other on an insugme4 2qvmgne(3926l,fm s efelated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges onnl mt vg wh/2u);ik/);vinpg: both g;/khwt2iv)npvigl n/)u :;mobjects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutualz*3qb--s+ xd1 gb. )jwhpwka r attractive forces of F on eac1bqj)p d.-kg-wxa 3s*h+rwb zh 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. What happens to the forcpbd.ghfve719 i bhf81e between them if one charge is doubled, the oth9.7 ifh1b1vdbghpfe8 er 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:y0kjn6 c h fhm0p20gj a distance of 1.0 m. What happens to the magnitude of the forc:f 0nhjm06yc pg2h0 jke on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated blrrqiy 5nlv1yl.*i*5.mdi 5kj ukz+1y a distance of 1.0 m. What happens to the magnitni.1 k jl5 5. +mz5ill1rk qvyy*d*riuude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separatmoe rts41-sm9e6 nqm 4qs*v:cm,+l mced by a distance of 1.0 m. What happens to the size of the force on sn*meqmlm1s +4q vm49o et:r6c -,mcsthe proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of - ixlq mohfc) 76wh( 2q3x3khga square. When a second point charge of -Q)- xwh 3mgfh oq(ckq6h7 l3i2x 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 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 triangle-4yji4uu8q m 9yzdx48ewbbv r-i6*ha. 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 due to a third charge of +Q placed at one of the other vertices4mvi4aer* 8q9- i-6bzy4u dyjb hwxu8?

  Which of the following is notns ::tcjpd9o 1 a vector?

  At twice the distance from a point charge, tl29,vll :e uyo 4hg 8cgsbc2i5he strength of the electric field

  Is it possible to have a zero electric field value between a neza(skv2.w);uw a9tq hgative and positive charge along the line joining the tw(9.zq )hw2 avtak;swu o charges?

  Is it possible to have a zero electric field value between two positive charges : or6j+ofe/ s9 afklb4along the j rb6f4o f:oe9k+l/asline joining the two charges?

  Electric field lines near psitive point cha2h:hhn8 *ggac iadj4bl6tf7)ah * j8srges

  The electric field shown 89l.mzak986y.j ew nhth ip,k

  Can electric field lines inter)udr ghzbsp +p ,p,nzl ,d:36nsect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a z e2,k3vey)9l, h )m5neixzcouniform electric field. Give a statement concerning the electric field in the block's inte2c39zvmyo ,kh ee5 )i,z)x nelrior.

  If a solid metal sphere and a hollow metal sphere of equal diam m83*lcd1qunpx +2 zaheters are each given the same charge, the electric field (E) midc1lzmxu d+* hq3pa8n 2way between the center and the surface is

  A cubic block of aluminum rests; 9b w5mosk7b j ieah,x8f:g.x on a wooden table in a region where a uniform electric field is directed straight upward. What can be said cobi.:9b awxh 8,7sjg fox5e m;kncerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elecg9-e) y:mgi9uweg1 b );s gsmgtric charge

  A positive point charge is enclosedy r 03z25tzk/ oxdkeic6 h,wo5 in a hollow metallic sphere that is grounded. A/oewz3 k,0hodk zi5x2ryc5 t6s compared 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 eq-wz b.g e 1xwk d 61wejbcwv51l2wv.0iuilibrium.

State Gauss's law.

  The charge carried by ohua761zhkc 0a 3sp3 yj8z bdt0ne 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 ma+lwtuq/qf r.0 phdo:9 ny more protons than electrons does this piece ofd90lwqf or qt. +up/:h plastic have?

  What is the charge on lu3 ngw-10m ia1 kg of protons?

  An atomic nucleus has a charge yj-ctijls pd2h.8-7y 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 wiry;, 0(t el;:ktfdncrb 6h 3-4.0 mC, respectively. What is the magnitude of the electric force between the:ctrlkb ; (n;te, r6 w3y0ifdhm?

  A 1.0-C charge is 15 m from a second charge, and the force between t6j ixv 8ve8egkg48ow +hem is 1.0 N. What is the mag 8 +ew68ge4v ixv8ojgknitude of the second charge?

  Two 1.0-C charges have a force between thwg,qfj h77d fsxn82y 9ld6 .chem of 1.0 N. How far apart are they?

  The force between a nu5 /-wc*87mqsi s4 j v dpk7zfu-*syg$30 \; mC$ 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.g 7cqu9bc-91k p-ztdr0-N force. If they are moved to aczq b9d9ku7- rp1tg-c new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are p (c r2pzy2v y(ne87cnjlaced on the x-axis. The first charge (7 (82p 2ycncevynj zris 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 odmbny pwor,m 80n ef9f/4t(x*f +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 magnitud *,8m 0/one4xrf(y9t bdmnpwf e and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges arr -i tgyxg;u;*e located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 yrig x;g*- ut;= 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, iq u;wlf pheq 3s,j*-2and 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 magql* -q pi, 3h;fujew2snitude 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 at (0, 0.10 m); Q3 = 5.0 nC i5t ibb 2kx-4u1vv2xx5q+ o iuys at (0, 0). What is the magnitude of the net force on th+uxt2k4b iuvi2v b yoq 5-1x5xe 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (1nqy)(s9rnegoaf kmp k*+vx-:1m q;j pq8,ur0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC c ;m: gq8kn*y1apq1nvfurqr j) x ksm 9oe+(-,pharge?

  Three identical charges of 3. 3wkkwojb 61g50 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the53w jkb1k ogw6 charges?

  Consider point charges of +Q and +aje+h opp 3s eyr4 z,m4nz-v4.4Q, 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 acti,ho 4nayz4j3.p +vs 4e-ezrpmng on it would be zero?

  A +3.0-C charge is a; q;/s3lp)fg n:6)i sbub javit the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a g:ivsb b f6; l3)/js;i pnua)qthird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin andb k.w1yv oo,0x, c m)phx(gi9b charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it, 0xx)hy(k1b, mov bwpig c9o. is zero?

  A copper penny has a mass of 3.0 g. A totalazv2:cs c wg:;g61 vpr 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 againv.p-an ,p(k r ll8(quf.d;vucipwdjw/ 3 b4y*st the force of gravity by the attraction of a fixed proton b3w *dw ,j l-d8..qifkn; yv(p/vu4(alpprcusome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hungeu6hak78cimbd5z+ut-ko:jdih;8- km :xg4c from a common point by nonconducting threads which are 30 5xko -u8gd+ bjm k:m8 hiicu - t7ckadz:;e64hcm long. Both are given identical charges, and 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. What is the bi:)nl+mzhd1cys4 g) magnitude of the electric field at a distance ozg1mi))l cn bs+4yd:hf 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fd-lidzphe2 a3z.x 4 6gor 9zb2ield at a distance of 1.50 m from a 50ge l36-o2zx. h2drzap iz b9d4.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is t10 g oc/w 8.e8rkh4knoqzzpl 1he magnitude of the el1okohlg zr8cn1q4k pew. /z80ectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of o jay(ue xqv)11fwvzl1 xfn;-0w) .ay the electric fiel)fx u1owewxl1jn q0 zf a).v( -ya;1vyd?

  A 5.0-C charge is 10 m fro dm:mvfcr cc; -ys77i*m a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargem d;f*c:m i7v-sy7 ccr?

  Two point charges each have a value of 3.0 C and are separated by a disazb w0 abnbf+lna7 j 468ug6*ptance of 4.0 m. What is the electric field at a point midway between the two chaunapbbg78 4*6 w0b + fj6zalnarges?

  A 5.0-mC charge is placed at the 0 cm v-b go*cq3z r3zs:en x/7 5q- gbyen/wmark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at theyx gbqbw: n7sre qo 5ev/n3--/c3zz *g 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0;fq t qloi27:4j(uj sgbm s79h mC charge is placed at the 50 cm mark. At what point on a line joining the two charges isg l2t4fmqj q:j9ib7h7 ssou( ; the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC aro-y j.srq) jz;e placed at x = 0 and x = 0.20 m. What is )s;jj o-r.zy qthe magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square .rar/rcw2 e,bkchd2 qxi3t-)of side 0.50 m. The last corner is occupied by a -3.0 mC charge. d.th/rkr) 2 -b2xwiqcr ce ,a3Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Cha2jboa(n* j eqk4-*9ityxby)l rges are placed at the corners of the s q(o 2it9 xjy-blea*j*k)y4 nbquare 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 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 i.*e l 9zblx*o -uehv00oswc. qs placed in a uniform electric field. What is the magnitude of this electricv* . oh.z-l 0oeube0c9xw sql* field?

  A particle with a charge of 4.0 mC has a md:h. * gcx7hfba9 qr q/ufzd60dre62 dass 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 eleela q- 9z:khrjp1n ,p0wb+tk.ctric field of 6000 N/C pointing b-w,z09:npr+ j 1ptakk.he lq 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 dta k9ci)dc.v8 (i0c i-2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the fo.ii ckdci8d(0ct)9 v arce of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radiusd : k j0*gduqzmd1u)r2 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from th dud1:zmjk2qru0* dg)e sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the 0 0q twm (+n.t oxc/dunqrz2i1electric field 6.0 cm fromoqwxz.2 t q/c0+1nd0muni (tr the center of the sphere?