State the law of conservation of electdb xprk4h0*pi46nx z 9m9 qmc*ljo49 uric charge.

  Is it possible for two negative cfl,z7 mk0ogy+ harges to attract each other?

  Is it possible for aiw4djc44 ,vwziw(j,m positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk.,ej pqxthd .81/arb*b During the process the glass rod acquires a positive charge and the sa8edx tq/pr bjbh .*1,ilk

  A proton carries a

  The model of the atom-)h xgg i7s c,i g+cgn.,zk2sq shows a

  A neutral atom alwayv1ewfd09+pp gs has

  An atom has more electron2iz,8igi ob r8mg-n)1 flxor/, . snwbs than protons. The atom is

  Materials in which the electrons are bound vejt1 4hk(7a,izlcfi/qry tightly to the nuclei are referred kj(tfc h i4 1a7zli/,qto as

  Materials in which the electronk/f8o6 7w5nbb4)k brke6 j iois are bound very loosely to the nuclei and can move about freel /64oe b)o78kbi6f5bknwr ijk y within the material are referred to as

  A negatively charged rod is broug4nr(qoox lm) m8qj/96pvn bii ai-6*pht near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be o-46ivpx6i ( *ljamn9)/q op8bmrinqcharged

  Sphere A carries a net positive cg*)p0 g5 bsanfharge, and sphere B is neutral. They are placed near each other on an insulated table. Sph0 fg *ng5b)pasere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posidw99 f0ts6qtoii7 c;h i kg*1itively?

  An originally neutral electroscope is briefly touched with a positively charxj-wz.7r-ym u ged glass rod. The w j -x.7zru-ymelectroscope

  An originally neutral e- chv5eist im4xvvsb85q-0x .lectroscope is grounded briefly while a positively charged glass 50x sxcvq-h i4i .s5-mtbe8 vvrod is held near it. After the glass rod is removed, the electroscope

  A positive object touch ;lnko (*q2chues a neutral electroscope, and the leaves separate. Then a negative object is brough(ouh kqc;*n l2t near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objecxejat:9qr l - vh2;0rdt is placed 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 ball, and stops. The first ball rarh; j q0 dtrl-e2:xv9olls 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 consta g /hp7kc. e, w+c5i9mdzmaf3qnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first c:,o 89oe2 59qunlo*5kbgxxqjziv d6 xharge is larger in magnitude than the xqx:exi2q9 vu l ,oo9k6 5o dbz*8ng5jsecond charge.

  Sphere A carries a net charge and sphere B is neutrjl/1)r4uw3- wnjrxtnal. They are placed near each other on an insulated table. Which statement best describes the electrostatic r1t4 u-ljwx)3 nr wjn/force between them?

  Two charged objects attract each other with a certain force. If the np;lh3wfh,zb(s7 bq ,charges on both objects are doubled with no change in separation, the force between themb,3p (hhwz;sb,q 7 nfl

  Two charges are separated by a distance d and exert mutual attractive forces o das0z2mu f/44 1xdpnjf F on each other. If the charges are separated by a distance of d/3, what are the new 2a1 zxd4d s npf0um4j/mutual forces?

  Two charged objects attract each other with a force F1dg7 3+ n- ikzppjq.soyjn- 6 q2f:raj. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distpk16+ajn-qd q3:ypsg7jf. nozir-2j ance 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 distance of 1.0 m. fo 9*9 ndixn7n+efc q+ What happens to the magnitude of the force on the proton if a second electron is placed next to the fiod in+nn+f*f ex99c 7qrst electron?

  An electron and a proton are separated by a distance of 1.0ub g; arz785hb m. What happens to the magnitude of the forcu7ha5 bg ;z8rbe on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separatt3 d./haogi m dp(r(x.ed by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to agm.or 3(h.tidd x /p(the proton?

  A point charge of +Q iskwl-;u4y6clel mq ey,or 3kmb5 6zl0 ( placed at the center of a square. When a second point charge of -Q is placed at one of the square's corners, it0 u4eel5-l6 mmq(6k ;ybk,c3yzrolwl 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 cj b2ax 67,s6pg sl-i0aplkqd +entroid of an equilateral triangle. When a second pllaj+ , 70apx6b-qgsd62ksicharge 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 vertices?

  Which of the followin 0uakoqh ;rm,2g is not a vector?

  At twice the distance from a point charg/f5o v*bnbj dk6u, aui:1+giw e, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and xv mss)gmr7,); . mtylpositive charge along the line joining thvly);,7ms).mx rmst ge two charges?

  Is it possible to have a zero electric field value between two prh aa0x*uu:9a/9+wexbool1d w. kw -oositive charges along the line joining the twox9 oau-lb/ 1+.:oowd hxe9a0 rkauww* charges?

  Electric field lines near psitive point zp oaradi z5+k(2t,4kcharges

  The electric field show4 p b g.s,cikavq3 x90/h-nfzyn

  Can electric field linesc+xul,oaq1a z15;t kv intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform e0 bh2,mcpkzc( lectric field. Give a statement concerning the elect h,2pc0cb km(zric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters / 92iq6blw*u0fdcloe are each given the same charge, the electric field (E) midway between the center and the surface ibll 6oudewcq0/2 i* f9s

  A cubic block of aluminum rests on a woo 4myta9kz8v*rue d5f8den table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on t5ky4a98r e um8tvdz*f he block's top surface?

  If a conductor is in electrostatic equilibrium near an electric ch)l-:0qcm mmy targe

  A positive point charge is enclosed in a hoyb)(9 8ddj 8u. gfve35-vgp mnkgk/ jellow metallic sphere that is grounded. As compared to the case without the hollow n yeje.3dd(8)p9m-5k8 b gvg/kgfuvjsphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriud(vjl fv2od/ )9wyo:ux g5vb8m.

State Gauss's law.

  The charge carried by -hen6 pc+ diy1ch0qe1one 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 protons th1jy3:9uf 8jjpz+t yfz0f 2f qran electr 1fuyf2+3qj9j f80fpzjtr:zyons does this piece of plastic have?

  What is the charge on 1 kg of protons?/l6fc y(di; dt

  An atomic nucleus has a ch d; 6r/d6n3e urdyw+gfa*ef.uok 4 2ncarge 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 -4.0 m bu-nr,rtsm3 i;0 ra;ko m1mf8C, respectively. What is the magnitude of the electric f0r;mkfr b,1ioan3- ;8musmt r orce between them?

  A 1.0-C charge is 15 m fr287a i-u uuq fqo//tfbom a second charge, and the force between them is 1.0 N. What is the magnitude o 2iuuf7/q- tfaqo8 ub/f the second charge?

  Two 1.0-C charges have a force between the5yg9y6x uh//sdv:b e) mlhet +m of 1.0 N. How far apart are they?

  The force between a ,o f*bfv,1x yr$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initr o;kg13din 43uv fxu:o nsv:1ially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation ovxv3g;k1i u4s od1:3uforn:n f 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Thet.a9 jje 1e; uyp:;vbh first charge is at the origin, ;p 1uve.hta:e;jjyb 9the 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 +2.0 mC is placed at umw(apw.* bm g1b4ju0 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 mab*p .w4mu (b0jwgam1ugnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges azt30d bcl9 h, -ifum2mre located 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 on the 3. c93,ilbf mh2- 0muzdt00-mC charge?

  A point charge of +Q is placed at the centeetrr* c:xxs:9r 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 e:ctrxrx9s :*. 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 om 1 5mwyigsip 0/hx,xc3+6lb (0, 0.10 m); Q3 = 5.0 nC is at (0, wi0bgc / 6ilys1+x 3hx,ompm5 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 is at (pw/k9 eu6 k.x hzojn070, 0.10 m); Q3 = 5.0 nC is at (o./pux7jnz69e k hkw 00, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilater0 (yg8vn95b .qf1fhnfjjszx3 al triangle which measure3vjfg5n9hnjf0xszb f18y q. (s 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +x.syu. fnyn yrb r1h;i*g9s,: pe04e rQ and +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 oe9u*ss1 ib r; :nhyf.e ypyr r40.,gnxf -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and ata ukeww .m09- +9.0-C charge is at x = 4.0 m. Where on the x-axis can aw.k tw- 90meau third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placedev k cz ;v0;*cv8;v(jvc)lb ygxe*ii5 at x = 2a. Where can a third positive ch x*vjek 05v(gczv* b8;c yei;vvl)c;i arge +q be placed so that the force on it is zero?

  A copper penny has a r3ey6 1wap/dfo zr 3u0 7o(tpev;ndp8 mass of 3.0 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 agaic5( c6lij k v/ajeu72jnst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is 7/jv6( 2j5u ceikjc althe proton?

  Two 0.20-g metal spheres are hung from a common point by nonch2 gr0/sx5) sy sr ;tdr1bfz;donducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsionz5) sdhsr;/21gr;s0xf d ybrt 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 isvuf-t,)bq ok9 the magnitude of the electric field at a distance of 1.0 m from the ,of9q)-u kbtv nucleus?

  What are the magnitude and direction c.yaevcgn77 kna;8 z) of the electric field at a distance of 1.50 m from a 50.0-nC charn7.8 k7aea vy;g)zncc ge?

  A 5.0-C charge is 10 m from a small test charge. What is tl7wptlmat (xv1v 455 ehe magnitude of the electric field atm v(epa1x54t5 lv7tl w the location of the test charge?

  A 5.0-C charge is 10 m from a small t+ /akg5a;wsj bdvh fe+:fg97*rdjrh, est charge. What is the direction of the electribshagjgfa r;+9* j,+:hkrwd d5ev/f7c field?

  A 5.0-C charge is 10 m uwjc d(q8h+qe.de (fn51o dh:from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locationo(w (eqdf.d+ 8h1c: jeqdu5nh of the test charge?

  Two point charges each have a val; ;dfuk2y30nq b/r*gc x5nx,9 tgdqefue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betwet3y/n;qbgkq *exn5 xfu92rd0c ;d g,fen the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0zwa4tdgf 8 ;u63r ;dyi mC charge is placed at the 50 cm maru a48ygz;fdi;tw6 d3rk. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4./ieg 3m2s rc7s0 mC charge is placed at the 50 cm mark. At what pointms7i/3 g cs2er on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 m k*)w3k imk3iuC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point mmiik3 3k*w k)uidway between them?

  Three 3.0 mC charges are at the three corners o9769 wfcnfzc4dp(fg q a1a7+iwg ze0 of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center o7wfg+co(wqzc4gfpi99ne a7 1z dfa06f the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the g oi *w /9f4e7qpkrbwog)2+of corners ogboi)2* 9kwgqo4wre +/ pfo7ff 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 is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge cu+qs 5g:kkp 7 av9pl4of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this euv 47:+5gakc p9qpl kslectric field?

  A particle with a charge of 4.0 mC hayc- : scni 4tsm:9mgr3s 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 placedvy*l *oxg9ry* in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?xoylrg * 9*yv*

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball isj-d jql7,0(slm 6 ozld placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of tlms-,07jo d6 (ljqzdl he electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 x clcy m03nd)*rc1)damC. What is the magnitude of ther)0l c *3cddacn)m1 xy electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carrq;yjmhwy z18 -ies a charge of 3.0 mC. What is the electric field 6.0 cm fr;8yj qzh1m wy-om the center of the sphere?