State the law of conservation of qe: j+ ; no88pw fggx1xzui h4unvl )ipq;,n75electric charge.

  Is it possible for two negative charges to attr i5siter 3: 1dhp3dyl,act each other?

  Is it possible for a positive and a negative charge to attract each ot0 dpymzv5 x/ e7yc/w37leub-mher?

  A glass rod is rubbed with9 g,;(ou ym(ormr ;vxjsofnc34ok +q (;y fhi7 a piece of silk. During the process the glass rod acquires a ph mrsuk 97y j og;o4(,m ;y +(;xcinorqfvf(3oositive charge and the silk

  A proton carries a

  The model of the atom show 2+f+) jazecxgs a

  A neutral atom alwaysgv,bxmb 7esa5g(-2 3k3cjgj l has

  An atom has more electrons thakh/ vz7i qpk0-jg --epn protons. The atom is

  Materials in which the electrons are bound very tightly to the nucle/2ogan7 lf-+v +aqj noi are referred tgf+ qao/j7vnl 2-+onao as

  Materials in which the electrons are bound vvw:l5xg h: emtv sp*6+w0kqp 9ery loosely to the nuclei and can move aqwxvw:p h m96l*pvs t+0k5e g:bout freely within the material are referred to as

  A negatively charged rod is r1hz6;zb v8ig7-tdh*lr.zmx g )kvo+v +sc s(brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be shgz-mc;vbo*) k +7vl6+ gstvh( ixzzr8.d1rcharged

  Sphere A carries a net positive charge, and sphere B is neut/ ;iqvpxc3v.ural. They are placed near each other on an insulated table. Sphere B is bqp v.vx3i/;cu riefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosc: cg7f ec/fd7j vd(hcax-9:dzope positively?

  An originally neutral ev ( v: u:mb*gyw/v*akzsucb-.lectroscope is briefly touched with a positively charged glass rod. The electros wba/: .zbv-*yum* (ugksc :vvcope

  An originally neutral electroscope is grounded bj- 8agqug(zzy 5zah 5;riefly while a positively charged glass rod is held near it. After the glass rod is removed, the ele gqah(yg j u-za85zz5;ctroscope

  A positive object touches a neutral electroscope, and the leaves qe(s d:nsynx1; x,-pcseparate. Then a negati,sen-:x p xydsnq1 (;cve object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is plau.sjwk/.h pk+ced on an insulated 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 b . jk+kpsu/h.wall, 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 the Co n).2 uxn6smfjulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge sh 1:nufuu6 v2is larger in magsnu6vu 1hu2:fnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. The,e gt,)7r 2 i n:afx(qcsfjew.y are placed near each other on an insulated table. Which statement best describsaqng,7.:r wjfxf t2(,e ci)ees the electrostatic force between them?

  Two charged objects attract each other w)l 4qoi,vvi* dith a certain force. If the charges on both objects are doubled with no change in sepil, *voi d4v)qaration, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces of :o-e tkueqc4z x) 1abjw0(-d 9vwkpm(F on each other. If the charges are separated b j-vc:ewq (wz9atku0e)-4x b( dpom1ky a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other withz ;zmeq urm /y-75z)ix 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 its original value? The force iy z5r7-)/zqxmiz ;uem s now equal to

  An electron and a proton are separated by a distance of 1.0 m. Whatyyi,gx;qk+t2k. sjoo z9- j 3m90xnpzlya( r6 happens to the magnitude of the force on the proton if a second electronyn.x9m 6 y- gzt;ak0 +r(zypil2,jx okq9osj3 is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wh 4wnqauip7d7 fd*,e- kat happens to the magfpwe,uak* dnd -7i7q4nitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are seoo4hd- iic2 r.8p*dtpparated by a distance of 1.0 m. What happens to the size of the force on the proton if t*hpipd -2d8 c4i. ootrhe electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a m zo;q37 1ximnn6(,kz: w suwfsquare. 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 manu: s(mz,;1qm owikzx 37wnf6gnitude 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 equilatek.h0waisme7 afc4qt( z c: 36xral 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 other63m.: fqx0kh s4t zc ia7(waec vertices?

  Which of the following is n7mo5eisekrg+/t7 yi 9ot a vector?

  At twice the distance from a point charge, the strengl),9 oaydu s9uth of the electric field

  Is it possible to have a zero electric foke p w.t / bamq51i/l5f6y0zdield value between a negative and positive charge along the line joining t 6do.5t/10 pq5lewzky mi/fabhe two charges?

  Is it possible to have a zero electric field value between two positiven pbdpag2f10m.o )br6 charges along the line joining mo.b1)dbg 026rpap n fthe two charges?

  Electric field lines near psitive point chargeso 6prg/so8 bq2a7npr)jd.g ; st9ys/rj 0ekc-

  The electric field shod 3 jr7sai7zqm8-aep6.y t3vb)z o+z kwn

  Can electric field lines dio 0drbb)uuo mt8b87 ;rq2m1 intersect in free space?

  A solid block of metal in electrostatic equilibrr/5 ;d )g cdf;aouxla5ium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interi)/rla gd5d;uoc f; 5axor.

  If a solid metal sphere and a hollow metal sphere of equal diamh. a*fbl+1 ht)ujlmw96u(oco eters are each given the same charge, the electri1bouj6oc ma.+(wl9h )u *lhtfc field (E) midway between the center and the surface is

  A cubic block of aluminum rests on e:e0k ;ripqq(lb( dad:6e 4ro a wooden table in a region where a uniform electric field is directed straigher6d(0:a:;4 orpe e (dibkql qt upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in x6yz3wyn 95hm qp,we4electrostatic equilibrium near an electric charge

  A positive point charge is enclosed iups3 l c, ims.0+shai-n a hollow metallic sphere that is grounded. As compared to the case wispihis ,+30c -al m.suthout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static 1 vzxe 7anx(p*5n6li/ a ymbe5equilibrium.

State Gauss's law.

  The charge carried by one electronyo z/(bx6fgc4 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 protons a rc6)iubq;y kt4h7eu)v3g rh,bkk0; than electrons does this piece of plasti; tkg,hqvk u0hy6c )4uk7abb)e r3; ric have?

  What is the charge on 1 kg of prohre9u gh)-,4q) e5pgknscri ,tons?

  An atomic nucleus has a charge obl8)mcj e1gdi8k:ebj0*l y;va2 b w i7f $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by(ien t zcc*/6srcc5 bi2e c)7y 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude ofcc )c (5in seye /62cri*7ztcb the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweenk i-ww;epns/- them is 1.0 N. What is the magnitude of the second chas/;k- epin- wwrge?

  Two 1.0-C charges have a forced14doc9sf ;:xol) sw/off/r/ nyfzz / between them of 1.0 N. How far apart are they?

  The force between a *a;kpu px2;f8jtr : nd7d p*wp$30 \; mC$ 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 1.0-N force. Iwf gw7x(r+g5:7v yddn f they are moved to a new separation of 8.0 cm, what is the electric force betweedn(7 w+ yvrwggx5:7 dfn them?

  Three identical point charges of 2.0 mC ; ,1ndb:vsjteare placed 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 electrostatic force : ;1edv,jst nbwhich acts on the charge at the origin?

  Three point charges are placed on the x-axis. A ch4 1 dhaeloazaa+oo+ (a cc8)+yarge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50oac4 zc aaa+leao (yd+o)8+1h 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 locatw)*u .+j(e0pgsaoh(n xwh bm/ed at the 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 magnitude of the force o.m()uhgawo0/jb h+ pwx *(snen the 3.00-mC charge?

  A point charge of +Q is placed at th os+bg, u x)rwor37a.ze center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that a,73b.wo)usr z ro+ agxn 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 (0.34 e.tbl /qikm tzm9r//0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at .9 rm4t lqetzkm//bi/(0, 0). 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 iu7y cz3ylfj-l( t-* vis 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 n(lvlzujf73- ity * -cyC charge?

  Three identical charges i1bd + :8mqgjvof 3.0 mC are placed at the vertices of an equilateral triangle which measures dqiv+:j8b 1m g30 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 +4Q, which are sepa( drbk(kd(/ibwy a-fi g,blx2. (t6lwrated 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 acting on it would befgt6y(b(x b.w(ai d /k ri,2bk-(llw d zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where on v8 5s)hb/bbbsthe x-axis can a third charge be placed so the n/)s5 s8 bbbhbvet force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at i9s b6rfkdvt06 7v0sux = 2a. Where can a third positive charge +q be placed so that the force on it ivk u79dr s0 fst6b60ivs zero?

  A copper penny has a mass of 3.0 g. A totalzv 649df i xnu*2fvo.h 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 attraction oa5ayb+ a aw wa(a:57fef a fixed proton some distance above it. How far above the electron is aa w( e+:aa ybaf7a5w5the proton?

  Two 0.20-g metal spheres are hung from a common point by nonco.yy v ;yu1r 7cqap4hsp5 7sy3lnducting threads whichhp57c s1upv.4 sq;yly yyar37 are 30 cm 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 theusr (q6d.ojks,+p)xvi2 nri :h cr/r. magnitude of the electric field at a distance of 1.0 m fr. rri s si,hvj/k)r2(+rqc d o.n6:xupom the nucleus?

  What are the magnitude and direction oes1p1vu - tay+f the electric field at a distance of 1.50 m from a uep yva1+t- s150.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofq;cj5d v;dh b8 the electric field at the location of b qj;;ddv58chthe test charge?

  A 5.0-C charge is 10 m from a small test charge. Wha;4y9nzg b/fnicm(.cu 5 fac-pt is the direction of the electric fn cic(z.f mf/yc5u ;pan4g-b9ield?

  A 5.0-C charge is 10 m from ahbjv7(8npsxhp /r 9d gl(p* o9 small test charge. What is the magnitude of the force experienced by a 1.0plh(hv8 *op sbn9d(j9 rx p7/g nC charge placed at the location of the test charge?

  Two point charges each have a valu iz*wbg cy c3.fp/*ra6e 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 charges*ar6 cw*fyz.cip b/g3?

  A 5.0-mC charge is placed at the;ue*m5nlm2-)wle1 c -qgm8nj ts ck -l 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the lqe-nnuge j 218cms)m*c 5-lmwlk t- ;electric field at the 30 cm mark?

  A 5.0-mC charge is placed at yo8 ufbgjz2bmzl e5r:p55t;6 8lsa k) the 0 cm mark of 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 charges is the electric f5)l2sp ; g ke8a5mjztou y:bf58r6b lzield zero?

  Two point charges of +3.0 mC and -7.0 mC a7+cmv typ9+;au.9rrl6taah z re placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway ;.pchyzmr t 69aut r7+9aa+vlbetween them?

  Three 3.0 mC charges are at toy z7;s4b nvx*4lb)1jbvv .fjhe three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find;b)x.vo vs4n1 7lj*bjyfzv4 b the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are ps-ql 1krhtk y5si7 ,2xlaced at the corners of the square as follows: +4.0 mC at (0, 0)tshrsk xk ,75yil2q 1-; +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 4nsmygu.t f/0ppbb vt*e4syl1 7 :.m mw8ula2 a uniform electric field. What iv7:uny.se0/ sgp4m8 ft41m *pul l2wb.ba yt ms the magnitude of this electric field?

  A particle with a charge of 4.0uhpp/ c*m a/)x 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 6000 hvms( gv vtm43 j/.xu7N/C pointing downward. What charge must be m.tjv vv /gsm(7u34x hplaced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC.3 o)dgcls(o- n The ball is placed inside a unifor(sod - cn)og3lm 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 ofg4es - yigc3eg)s,8y o+jif* k +2.0 mC. What is the magnitude j3e-gfys ,g8cygis *e+4ok )iof the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0-vl)i1frcj8an05 3 s/p/oezujk oo :j mC. What is the electric field 6.0 cm from the center of tjl/n8 fi cj) 0vojorp/13e :usz5ko-ahe sphere?