State the law of conservation a508 o 0* nyu4ssexavnof electric charge.

  Is it possible for txwu.+ +o wdg dqre1(3vwo negative charges to attract each other?

  Is it possible for a positive and a *cwxolfx oet9(m) bu;;l;8lcnegative charge to attract each other?

  A glass rod is rubbed with a p 2e19kz*ry twqiece of silk. During the process the glass rod acquires a wzq*er 1y2t9k positive charge and the silk

  A proton carries a

  The model of the atom she6(c ewu (osvq:: 3vhwl 5)osyows a

  A neutral atom always 1lk+ gxa1p )ed3ty, nei+s0go has

  An atom has more electrons th/ sox +4yh rdi5f5hd,yp/ d2qtan protons. The atom is

  Materials in which the electronb ,a8teq e hjbv9ld *z 7xza1(ine039ts are bound very tightly to the nuclei are referred to aae7bd t qi9e3x (* a1vzbj8 nlh9te0z,s

  Materials in which the electrons are bound very loose5+ ibwpl(i(f24me qxwly to the nuclei and can move f(i q+45wiewb(2 lmxpabout freely within the material are referred to as

  A negatively charged rod is brought near one end of anozguxuf99 )mb a3v-1p uncharged metal bar. The end of the metal bar farthest from the cha vbm9gzfau9-u3 po x1)rged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are p.i+xjuowh b)k 8upe 4:v/hb6isyb+ 2flaced near each other on ane+i b4/x6 wuh2uobpb jh.+i 8f)ky :vs insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivel*z(:e6hpsoat fr2j 6 wy?

  An originally neutral electroscope is briefly touched wm r,7bhu ;9pa)zz9gj9 ll c5wxith a positively charged glass rod. The electrw;uza r )lghcx z97l99,b m5pjoscope

  An originally neutral electroscope is grounded briefly while a positively chargo* z7mjbqk g/-uv -n*fed *nu-* /oz7- mqgfkbvj glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separaz6 gpqn)wkb-(xtjf ( 9te. Then a negative object is brought near the electroscope, but does not touch it. Wh b)xkg-t(nfzwj96p( q at happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neu9.. c7bfmi,qycjwqa m -,1 wq9g*y c 1+tjqugutral metallic ball rolls u wc m ac97.cfq1 +q-b.i,9 jumy*,1wgygtqqjstraight 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 charge on each ball?

  Charge is

  What are the units of t-an n u:zn2to;vck 9,y bosnagb8w2. 1he Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a diw 2dag1jnk5n* w:t(kbstance d. The first charge is larger in magnitude than the second chargk:25k(wanw* dtb1 n gje.

  Sphere A carries a net chah15ar, ytk mmsvj.k2c2o9 0pmow 6hl2 rge and sphere B is neutral. They are placed near each other on an insulated table. Which statement 2 lkr2 p2 syvoj,oaw.1m05h9k mhct6 mbest describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges t * e 2br uv5p18ohbwe,,xb3omon both objects o o, ex5mb3t8wr2e,bhupv*b1are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces owgz fc)9ayl)60/pmbo f F on each other. If the charges aremg/ z)y9owc )6lbfpa0 separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attractur9kaobxt / fx; 2mr(wu4 4dy0 each other with a force F. What happens to the force between them if one charw yuro4u t9k(bxfa/;md2 rx 40ge 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 b-r- gjqy:d( i1cyu0 idistance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to th0 ug(d-cqyb- :jr1iy ie first electron?

  An electron and a proton are separated by avk1xy; oxh7 a; distance of 1.0 m. What happens to the magn7;k xvoxh1ya ;itude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are sepak hfw (eqj+pm-dc/ 2+xrated by a distance of 1.0 m. What happens to the size of the force on the p( 2d-x hefp/+ +cqkjwmroton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center ofy7q2joo(i5x9rr)q bkecw(r2 0hh 5s q a square. 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 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 i2rb qh(k0r)xh 7 qcwr2(oys5oj5qe 9 of the square?

  A point charge of +Q is placeh0iytig1 ( qg5d at the centroid of an equilateral 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 charge due to a third charge of +Q placed at one of the oiyi( g51 ghqt0ther vertices?

  Which of the following is not a vehxni*s rsg hfdx54g+h;+,t a;/cd5yyj68rj u ctor?

  At twice the distance from a point charge, the strength of the electric fqpxql w(zy83 :ield

  Is it possible to have a zero electric field value between a negative and pog.h srrjt/ z;1sitive charge along the line joi /r 1gsjt.hr;zning the two charges?

  Is it possible to have a zero electric field value between two poxj hsi x+79g.lsitive charges along the lin7hx+lix9j.s g e joining the two charges?

  Electric field lines nea)g fk mv:hja 42iawhj3 )xau8:r psitive point charges

  The electric field shzx ocu0l 1h5g +bkbh 6abg60ssnf-2n)own

  Can electric field lines intersect in free spac2ht7ljz4xoyn,rknsd5o2 42 o e?

  A solid block of metal in electrostatic equilibrium ivwuxw3b m-0*js placed in a uniform electribux*wv-3jm0w c field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sb8;/x*d*kzi 2:: m bulzj xjouphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface ismx;loubx j8k2 zd ::b*iz *j/u

  A cubic block of aluminum rests on a wooden table in a region where a um dcs+ wv nlc5/z8rh,-f/zu8mniform electric fi5zmcr,8m/l 8f zhwv+s/ un-cdeld is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an ele cvwo,lg90vhc 7loo:a:j v6l, ctric charge

  A positive point charge is enclosed ingx* s1wss es ,lnnd7-3 a hollow metallic sphere that is grounded. As compared to the case without the hollow sph,*-g7n3ew1n ls d ssxsere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static eqzpq *-/n+( 3tzb k a6mpen0tisuilibrium.

State Gauss's law.

  The charge carried by one electron g* 87p berfmlm/ hg8b(4gq qi3is $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic hao h+ -bukquw4mp8/ibxpq +:7cs a net charge of +2.00 mC. How many more protons than electrons does thm/h+ pu+b:iqocu74 k8-qx w pbis piece of plastic have?

  What is the charge on 1 kg of+x zj5 yru9ukrw,m1 1v protons?

  An atomic nucleus has a , lswr :0,xllscharge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepakwxfl. d mr1cbra),:t; ft 2)frated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude r1)f .ram,dlbtxtf:w2) k;fc of the electric force between them?

  A 1.0-C charge is 15 m from a second +(uir -.xnokxcharge, and the force between them is 1.0 N. What is the magnitude of the second charg-rkx+o(i.u nx e?

  Two 1.0-C charges have a force between them of 1.0 N. How nf 1ki wm,jc0rk)ef+e b94rn a, v-i*81zgjjkfar apart are they?

  The force between a 3yp:w ,(uvdo0.h/lhp fytk; y$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm aparqst/k *a13a27sdlclwa/ bux-t, experience a 1.0-N force. If they are moved to a new separation of 8.kx-3ls7 ada s 1u2/w t/lqa*cb0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed ocb j jiszapu93 gbnc8z: ,+/e/n 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 bp9z uc+3nj:/, a8gbcsz/eijthe electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-ap a zbeky.8i91xis. 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 mC at the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the chargeyip ze.98a 1bk at the origin?

  Three point charges are located at th4 iq*ly8fjv njse5g( /e following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the m8ig s (l fqvn5j*4eyj/agnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at ksu dr84n:4v2jmn -ak9cb 2l xthe center of a square, and a second point charge of -Q is placed at the upper-left corner. It is 4ndab9c8k: -2u4snj2vkxr m lobserved 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 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 is)p uxov5uzis90i-1e cw9dx7t at (0, isz9 w 90uox-)5 idv7 xpue1ct0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 7iu85 5cvwyalr s2h+ym); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on thcsu8a25r5y vi +7hlywe 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices ofp/ab3wdonej un u +1 3l59cd8u an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic forpj9uaue38 u 3/wn 1on5ld d+cbce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whatbnbew31pv44 :g ;fdoheh3st) point, on a line between the two charges, would it be pon1 ;f4vptdes:wb3o geh ) h43bssible 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 and a +9.0-C charg1jfj,zvp-5s f tyzb1;e is at x = 4.0 m. Where on the x5jj;z 1ypsfb1fz-, vt -axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -nbaewc3yr ;rln5 +lcbf.9q / +q is placed at x = 2a. Where can a third positive charge +q wn.+ rac/q yblcef l+ 9brn53;be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total o* (onivom)g, jf $4.0 \times 10^{12} \; electrons$ 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 ,n bx/9t ugg)9gc c)nfur3puns-4x8v force of gravity by the attraction of a fixed proton some distance )g )fbcn9 4x,/ xrg 9csug3upnu8tvn -above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from 9im7-) b- q ja8qbycxka 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-ci 8qab myxqb)-kj97 between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge offinx+-ebu 3g7r+sl z2 +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nxen7fil ub+ gs2-z3+r ucleus?

  What are the magnitude and direction of the electric fcj4d 8ab oar2bnsl2d;2/+ ki9v qnrz.ield at a distance of 1.50 m fro/r. ab9dd a+24jb;8qk2nc zov2ilrns m a 50.0-nC charge?

  A 5.0-C charge is 10 )tx.j gbvwj*ix ;m*,t m from a small test charge. What is the magnitude of the electric field at the locatij)gx*;j t* t.vbw,x mion of the test charge?

  A 5.0-C charge is 10 m from a -sz2w6;jc o vz:sp3ausmall test charge. What is the direction of the electric 3jpc zzs2 :o;6uvsa w-field?

  A 5.0-C charge is 10 m from a small test charge. Wh2chh+auf2dme2m7 ga /dfi h1 )at is the magnitude of the force experienced by a 1./f72hc1uade)g 2+m m hadhfi2 0 nC charge placed at the location of the test charge?

  Two point charges each have a value 1t 5ga loqx;(- cp07y2wmbqjw 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 b x;7jq ow2t1yl0a-gpwc(5m q charges?

  A 5.0-mC charge is placed at the 0 cm mark t-3 ,ivbelu,on,t u;+,amn0zfa zy)z of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fieb3-iyam,n,u;za0 t+ev l ),,zzou fntld at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4. bdzz-:xt9i:+t h i:s t6jn(dv0 mC charge is placed at the 50 cm mav zd-t:xdnsi9(jzi bht:t:6+rk. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC anoho tif-c,1wdq3x1 e)d -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between thx hc 1toedf1io q3,)w-em?

  Three 3.0 mC charges are at the three corners of a square ofm;hqn-ep4n:52q 7rx c60c s c9ayh1u 8de pjdj side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electj d c 9da8qn 6ph05u-y4e p 1qem2s;cx7nj:crhric field at the center of the square.

  Consider a square which is 1t x3ukfs 3.5)8netkekv b;yr( .0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, xek r. k5t83(yu3)bf;sn vtek0); +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 o/q 0rnm w99ns.dvw y-ff 5.0 mC when it is placed in a uniform electric field. What is the magnit.w my-vw9qsnd0n f/r9 ude of this electric field?

  A particle with a charge of 4.)ru+anbbmu 0 iy)+s d-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 0.120 g is placed in an electric field of 6000z-mpp0ffdiint8;8 mmt(2uk. dyw;j;b .; z so N/C pointing downward. What charge must.d ; mw. 8mmsnkj(zp;yt zfip; d-tubf082i;o be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge o96,wwvz e4 uq;nqm, rmf -2.00 nC. The ball is placed inside a uqer w;4,nqwuzm69v ,mniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the m/+vjts k h8vg 3y5hxs.3eqre8 agnitude of the electric. +38hqhej3/t5kx8ygv sv er s field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of9f* b/qnng(r1,bf gbr0 b 6jym 3.0 mC. What is the electric field 6.0 cm from(fnrb* g gbq0m/,jf6b9r yb1n the center of the sphere?