State the law of conservation of eleca.la;wql -asx(.gi 5c tric charge.

  Is it possible for two negative charges to a v2.u jisg) w2,97qu ydqcsxi3ttract each other?

  Is it possible for a positive and a negative charge to attra1-yv.jt,p r onct each other?

  A glass rod is rubbed with a piece of silk. During the process thswiz4)iyy+ h4 2.n bxje glass rod acquires a positive charge and i4+)i2x.yhn bj zs w4ythe silk

  A proton carries a

  The model of the atom s( mokarmy;:9 9)kfg g5tl d5cchows a

  A neutral atom alwaysg;pkznaah ;)ej 5z5 e( has

  An atom has more electrons than protons. The atoysu dk:s61i)d.j0a8pf jwkd , m is

  Materials in which the electrons are bound very tightly to the nuclei are reii5 l70ph20 whbl (qoiferreb20 5l l(hpo 0iqihi7wd to as

  Materials in which the electrons are bound very looselnwz8mf+ tw/:ty to the nuclei and can move about freely within the material f/wt :mznw+t8 are referred to as

  A negatively charged rod is brought near one enuj/)jito 4 cv7d of an uncharged metal bar. The end of the metal bar farthest from the charged ro 7/uv)co4jjitd will be charged

  Sphere A carries a net positive charg(/hnk.*4kyd o x+i jgde, and sphere B is neutral. They are placed near each other on an insulated table. Sp okn4dg y*dxj+i.(/hk here B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positively?mr*ng jq c4+.z/eh( dk

  An originally neutral electroscope is briefly touched with a posit 1epfza0ub5r1)h7p txmkh+ d2ively charged glass rod. Thetm0dr uf5k )hz17xehp2abp1 + electroscope

  An originally neutral electroscope is grounded bkv,ht/ sae 3 oo,b8yo:riefly while a positively charged glass rod is held near it. After the glass rod i :t,b/oke ,asvhoy3 o8s removed, the electroscope

  A positive object touches a neutral electroscope, and the lvc- ;e3)jb0pp tuuh7beaves separate. Then a negative object is brought near the electroscope, but dop t-c3vb u0h j;)7pbuees not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neu/)t jv/tjw,ejt c y:e7tral 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 bal:/,t7vwt )tj cj/e jyel touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constp mgps:m,5 ;md,rj:ma q7w+dc ant $k$, which appears in Coulomb's law?

  Two charged objects are sepalcqo) w vrx0* 8xli+r 9-;xip(3jdkynrated by a distance d. The first charge is larger in magnitude than the second charlvrqk3r+-y0)*npcxid xow 9j( l8x ;ige.

  Sphere A carries a net charge and sphere B is neutral. Theo5 ;lervg8h0si o-p8h zwg: 4fy are placed near each other on an insulated table. Which statement bes phs0e-r54lh o; :g8gow z8ivft describes the electrostatic force between them?

  Two charged objects attract each other with a certain i)xnxxg/ d2 x x6tmgi*,*7eidforce. If the charges on both objects are doubled with no change in separation, the force be,i*xx g7 ndxm)2xi6ied*xg/t tween them

  Two charges are separated by a distance d and exert mutual 9v.)qcc:c: uah6 lx jeattractive forces of F on each other. If the charges are separated by a di :u:xe9) v .qacj6chlcstance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forcey)*vy pf10 f sxqfi(cfp:w4 -t 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 now equal t(-ips) yffxwv4 f0ctp yq 1*f:o

  An electron and a proton areo8 ny z1k6ah64yd-yxg separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second edy4 8 oyghza6-yx1k6nlectron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wh 6:lg*r)m)-j ,tsyn jga8 *ohf juk6xeat happens to the magnitude of the force on the first electron if a second electron is placed next to the proton?:6glu ketoy xj*f) 8 j-r6,gnjh) m*sa

  An electron and a proton are separated by a distance of 1.0 m. What happens toafxag tr- w2vr..c)z5 the size a).fx grzca 2.rv5 wt-of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q,;wh- phmiqly046pt w is placed at the center of 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 squa,;mt4wihpwhy qp0 6l-re. 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, c55xm:3cxa nps4-qdmmt r5a an equilateral triangle. When a second charge of +Q is plac5,trc sc:- xam34nq5pd x amm5ed 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 followingcb 1sk;8a4 e;cd6vied is not a vector?

  At twice the distance from a point charge, the strength of the electricktix3-8b 84 q.lf kfx0wwrlo9 field

  Is it possible to have a ze1p:0x2ku7ukg t*x ges ro electric field value between a negative and positive chaek7p kg 0stx2x*gu:u1rge along the line joining the two charges?

  Is it possible to have a zero electric field value bet7swlx ,m h *mfqt8d.a,ween two positive charges along the line joif7qd mhxt*l.,, m s8waning the two charges?

  Electric field lines ndvw-;h 1 5*xzltt ciy9ear psitive point charges

  The electric field shown r,f -vvl fnu/( ca*uvpe4li(41 iv5yx

  Can electric field lin3dxbohz 3)y v/pc6vfg.-ht7u es intersect in free space?

  A solid block of metal in electrostatic equilibrd:)k0nm rpy ..lf ow7nvj- js9ium is placed in a uniform electric field. Give a sta.-dmns y .wplo7frj vk:0 9jn)tement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diametero/dx .tiywdbm) 87 )rls are each given the same charge, the electric field (E) midway betwd oymrx)l/7.bwid t8 )een the center and the surface is

  A cubic block of aluminum rests on a w-,a -0ttz3vm b pzv4lsc4b4 sp8;uuopooden table in a region where a uniform electric field issmcs0zp -43-;bo4btzt a pu8lv, 4puv directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near a5kl+jbb-u7 x.l2 n gfnn electric charge

  A positive point charge is enclosed in a hvo3glfofx : o hq:j:g:k)i7e(ollow metallic sphere that is grounded. As comp 3:xgofqj )ge::vo(ho7 likf:ared 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 w 7z j6kuk7cun 7s;1y0uz1 7rq bt5 s(n-gfhxhequilibrium.

State Gauss's law.

  The charge carried by one electronf,hzncvr./.u, md; zh:3uk umouas1, 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 hay,44ufs *:ztke ;x guq l;f+s 2b8mtphs a net charge of +2.00 mC. How many more protons than electrons does this piece of4;e:u8uxh4,tb ;ltg pf2fszsy mq+*k plastic have?

  What is the charge on 1 kg (4paa 6jobhxn/ 5;dvsof protons?

  An atomic nucleus has a 2a8j l99 iz.nzbky*kscharge 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 a , )qtm :4vkj)ez 0uymy.zc9mfnd -4.0 mC, respectively. What is the magnitude of t:m uyyctfqve)jmk zm0 )z49.,he electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them i:w e fy, tjzl2d(d*ly3s 1.0 N. What ist wdd l ,:ely2y3(jf*z the magnitude of the second charge?

  Two 1.0-C charges have a force bet5gy p9ib jgn.q31xv1 tween them of 1.0 N. How far apart are they?

  The force between a gc( j3(np yms8$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart,t7o(m )qa.ls3y qiawi z/2q9y experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwisq3 y. iqa y72)qmloa 9z/t(ween them?

  Three identical point charges of 2.0 mC are placed on the x-a7tk cs z 3)nd5luqj41xxis. 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 which acts on the chargxz)q j4n ukd5c3l17tse at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed a rad;9 ef tm 5q,qo2qf0fi7h)dt the origin, -2.0 m C to deda) ifq 0r 7f;fh9tmqo25q,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 charge at the origin?

  Three point charges are located at the following positions: n*c z hall8,:dQ1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 =:z *hd8c ln,al -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, and a secondyy+n 9j)+vlt+rhm;c3d6t: 4fm hmo ws 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 positivv ht+6f: yl)wr;3jmtymhoms++49n cde 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 m8e/ve5o43 hil. veb nr, 0); 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 o.re 3l/hv een vb485i5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Qd:zy. ay;k*ta 2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force oaz :tdyy.a *k;n the 5.0 nC charge?

  Three identical charges of 3.0 mC are placssl.7gip2)b ge8d 1urd( sj8ped at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the pl87 dsu ps bjrd)g1e.g28 (sielectrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separatedqwrv bdx,kc :i1o7,(hn0y +tn by 3.0 m. At what point, on a nrk, +wo7vqy h(0 ncbti:,x d1line between the two charges, would it be possible 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 charge is at x = 4 y,9lsf.iq)yk.0 m. Where on the x-axis can a third charge be placed so the net force on it is zq)fl y9.,is ykero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whjms:*16s xiz13m;(snyw fl* 9lzbd vb ere can a third positive charge +q be placed so that the force on it is zero?1 3s*lszw;njzlv bdi9:(m6yx fs *b1m

  A copper penny has a mass of 3.0 g. A totaypc*ns 2dw(q;rspswf h .+t*5 l 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 agas,xms5,0a lvj*5 gu b(udjj/ qinst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the proto* su5 0x dsalbm/j,(,jvuqj5gn?

  Two 0.20-g metal spheres are hung from aclg:t: rw)lfx(byla-b9-o 5w common point by nonconducting threads which are b-5g:otwabfw:lx c lr )(-yl9 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 the magz )4es:(bwn3,fik osfnitude of the electric field at a distance of:)sbkznw,io ef4 3s(f 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distanh2gyrzg e5id -44 pk-nce of 1.50 5dkg2zeg4ih n -y4-rpm from a 50.0-nC charge?

  A 5.0-C charge is 10 mcd,/ 4zojhb-y.e 7fua from a small test charge. What is the magnitude of the electric field at the location of the test charge?bj.,4z7yf /oed-ca h u

  A 5.0-C charge is 10 m from a small test charge. .uyph k sqqv7h60ck:-q 6*,bo jeq4ux What is the direction of the electric field?xkh*q6q,40oj 7b 6qvhu: yuc-e k. qps

  A 5.0-C charge is 10 ml. sskxa*;rw, from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed ,k .*r a;lxwssat the location of the test charge?

  Two point charges each hav p0zwb t)+yp7be a value of 3.0 C and are separated by a distance of 4.0 m. What is the electybpb)+tw7pz0 ric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick a :0cp4fo+ +ob;i oszdnnd a -4.0 mC charge is placed at the 50 cm mark. What is the electricsfo 4+in+c;b:oodzp 0 field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chargej)tu,pdx2 q -z is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field -jqp 2xtz,) udzero?

  Two point charges of +3.0 mC andsmvm)d4a ht)2 -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midh2dmvsa)) 4tm way between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The ik sp9nq(q01 uu;3use7/k8 jfixfk9d last corner is occupied by a -3.0 mC charge. Find the electric field at the center ofsq8ik1jk;9 xu7f3 s(kn9d equifp0 / u the square.

  Consider a square which is 1.0 m on a side. Charges are placed ap.hlod qv 94k:i1 ;3+hzbz tapt 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 zhl t hd;41pbqka.+ip 3:oz9vis the magnitude of the electric field at the square's center?

  A force of 10 N acts on a chargevf8x.uqvr,55nv q j bpt a476q of 5.0 mC when it is placed in a uniform electric field. What is the magnitudeq8jv 7.a5qfpv q brvux5,6n4t of this electric field?

  A particle with a charge of 4.0 mC has a mas z ,ukkbz6oa,d+bs50 t 6rk6tcs 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 om4/o:m3 rz kavf 6000 N/C pointing downward. What charge must 4z /r:kvmam3o be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g ca ckhi3(i.1ynim)c 1hcrries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended agains3 hcc(i)1icn i1m.hkyt the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carria+u r6kpwpi04a+sq l (es a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's wlr+(suk64pi0ap a q +surface?

  A metal sphere of radius 2.0 cm u m4jh;o9 ydj*v9hm 0w5i v5lscarries a charge of 3.0 mC. What is the electric field 6.0 cm from the centeoyi0hvd u 99;mjlws5*hvj4m5 r of the sphere?