State the law of conservation of electri4 2uci/mzbvn 9(- xeaoc charge.

  Is it possible for two negative charges to attract each oth8 pk)xs k-np3yer?

  Is it possible for a positive and a negative charge to ag: 3l-bz,f1 vowq7b znpdfh20dwig , 8ttract each other?

  A glass rod is rubbed with a qxt4k w96frs4 piece of silk. During the process the glass rod acquires a positive charge anrfs9q4tk 46wx d the silk

  A proton carries a

  The model of the atom shows gysj.;0xjv 490 jhsa va

  A neutral atom always hasj xb)h:wm4xq 5bfph29

  An atom has more electrons than protons. The at*f,mjbx:vsw0 w df5/ xom is

  Materials in which the electrona5f(*pq61rvu2ak m5 o.fz upf s are bound very tightly to the nuclei are referred to rou25p*q5vaafmfz 16k pf(.uas

  Materials in which the electrons are bound very loosely to1iijt 1vm9xi4 uyfb ;6pk4 wz4 the nuclei and can move about freely wi6t1i4 1 j uvzf4py i4mwb9k;ixthin the material are referred to as

  A negatively charged rod is brought near one e68s yphr y.xfkm+(hu9 nd of an uncharged metal bar. The endf mhs+y86(r9 xuk. pyh of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charg7s xjjr(5w43t a.d k, bgrugd7e, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire trx37gdatuj gdk, . 4w7r 5(bjshat is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positively?*p+ol:e6uk33 /nls ojiqi+8is :dwkf

  An originally neutral electroscope is briefly touched with a po-*6n.ltc*b 4;jz0nf jnixr neb z6by/sitively charged glass rod. Thec-*r4jnfejb .b 6b n0z zylt;6/*nxni electroscope

  An originally neutral electroscope is gr1/d06wiy5 2mrb9wi er3sam prounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electros/ay i261idr39w5msrreb pm0 wcope

  A positive object touches a neutral electroscope, and the le lg ot+ :,xaw+qljcp0sqr*f, 7aves separate. Then a negative object is brought near the ,+qlxw,0fq7ltpo* :rg as j c+electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A a m)2n4 1s4x apv(xzdwneutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the pat4za4xvnma1 2 xs)pdw(h 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 the Coul o6ir 021cmybiomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated1-9f- cd q9hxbma y2bp by a distance d. The first charge is larger in magnitude than theqx bdfam29pc-y-h 1 9b second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eav21,2zhl c.wq mtgv* qch other on an insulated tablect gh 2wqv,lq1z2 v.*m. Which statement best describes the electrostatic force between them?

  Two charged objects attract each otobv f2vj-yeq4 2ecjkl2k p /75her with a certain force. If the charges on both objects are doubled q/ kejf j-kyvoc 22ve2b7 54lpwith no change in separation, the force between them

  Two charges are separat f; z/axmrn 4o+zexh;.ed by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what ae+x.n;xr/f a4zhzm ;ore the new mutual forces?

  Two charged objects attract each other with a force F. What happens to t4jkzj /j*of6 ,:0fs iiyk.ymehe force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-four*j6 0:/ yfmkijifyeo,4j ks .zth its original value? The force is now equal to

  An electron and a proton are separ6vr0iow wzx nh(b;:h 3rsh 29nated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first elh n(sx hz0;6wrbo nh:3 29vriwectron?

  An electron and a proton are separated by a distance of 1.0 8/ ockhc:;;j :p7jjl* vzcojm m. What happens to the magnitude of the force on the firs/*7:jjcl okjpv ;ozh8;c: cm jt electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happen8bkx zogi; t98 vilpkz+d(/ r5*+ay ups to the size of the force on the (x9 z+ov+ 5ud;i rki g/kl8*payz8bptproton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q +ubg nuk m0,n2is 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 chauk+u,gmn b0n 2rge 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 x/ j4 6ayolba0;w7fo s )upg36h 3quv3xszao,of an equilateral triangle. When a second charge of q u )b3h, z37g wlxvyox6u;asa40ofp3jo6a/ s+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 following is no-- +p+a:utemuput3 wezu8tu49g 4bacgy 9fp 4t a vector?

  At twice the distance from a point cha tmy ,7g qamz0u)v7t;finv)ymkdb30 +rge, the strength of the electric field

  Is it possible to have a zero electric fi li*dw5 kvw,v-kq6s 0-r lykw/eld value between a negative and positive charge along the line joining the56il/kk ,0rw-v s- wykld *wvq two charges?

  Is it possible to have a zero electric field value between two positiveay ;nv7 lbrq(, charges along the line joining 7a(yqr;nl v, bthe two charges?

  Electric field lines near psitive 4j:zuyk 31bxf6)k vzspoint charges

  The electric field sh )om .y/12vdjx7ci oqaown

  Can electric field lines intersect in free sp xrsf5*h2 uj f(3p3vklace?

  A solid block of metal in electrostatic equilibrium is plazccm*jock a46 b)+8 cjzos7uoe3zc47ced in a uniform electric fieck7j+c*38scc azz ozcu44m6 eojb 7)old. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal dz l x2q- 7dud+j/)jadpz:lo6jiameters are each given the same charge, the electric field (E) midway between the ce2dduq-j 6pxz) :ajloz/ld +j7nter and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a tp* eaxm*:/ anqqea9.uniform electric field is directed straight upward. What can be said concerning the charge on the block's top sux*t ma/e q:q9paae n.*rface?

  If a conductor is in electrostatic equilibrium near an )1)xuf bvy8i6nw7r muelectric charge

  A positive point charge is enclosed in a hollow metallic s n9nn bbg ewi-e5s(6)ephere that is grounded. As compared to the case without the hollow sphere, t nb5eng6een b()-s9iwhe electric field at a point directly above the hollow sphere has

State three properties of condun +ihaqa )k1wi 4 l+mmh+akuj73xt+:l ctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is9q v o(),l fch7k:jmor $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic halhy8o-p- xw .jmqg7f.s a net charge of +2.00 mC. How many more protons than electrons do.xhjqygl. 78wo - fmp-es this piece of plastic have?

  What is the charge on 1 kg +2rg0qyka8, zbbz )nzof protons?

  An atomic nucleus has a y*qru;po i2qjh(/87t5c jv dxcharge 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 zt gn/ e3a/bl/values of 2.0 and -4.0 mC, respectively. Wh/ea g ztbn/3l/at is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a xuo,hx ;5-(nr*w nzrd3i*mz fsecond charge, and the force between them is 1.0 N. What is dri*run(zno3-w xf,m;5x *hz the magnitude of the second charge?

  Two 1.0-C charges have a fv5 4ev sbhm1 ib uu34t;4lltq0orce between them of 1.0 N. How far apart are they?

  The force between a :rpvob2)bbg +(mrx bf9o0 f 6bpl;r.b$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencefff dl 2cm9d;b4w3pt9 a 1.0-N force. If they are moved to a new sepa wf ;29tfcd9b4mld3pfration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 oi8v uko0* 7ayvt8 *zbx5, rzrmC are placed on the x-axis. The first charge is at the origin, the second to the right at x = rki508v8, u 7r*tb vzoaz* xoy50 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 pla0 a-clx 92frvaced 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 -fal r0 v9xa2cand direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located ajy,).ki )t5uidgu 5hit 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 u,ii)y)5jth k5 iud.g= -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, v9 p -*:xbm-sddsjr hdlk(rwq((- j/cand 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 magnitude of the force that acts on the center c -:s(w c(/* jv s(rrdddm9 xqj-phk-blharge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.34g7.*c5e:eb7yn z r7yglcas y0 m, 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 5 sg4ay g 5rbz:l77c*7.yy eenc.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m *f-cjhs g+t0w); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forc*+cj s fthw0g-e on the 5.0 nC charge?

  Three identical charges of 3.0 mC, +*kjpy8c1xtciahh:jx pq+47 3tefc are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the mxchq e1jj8k *43+ h y7xtc:+pictap f,agnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sep9htufz hg0p41 arated 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 actif hz094pt g1hung on it would be zero?

  A +3.0-C charge is at the origin1bo(fu*x,pzh 1s gm 1v and a +9.0-C charge is at x = 4.0 m. Where on the x-ax,m xo 1 *spgv(bu1fz1his can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge b qtpo6+:5 bip-q is placed at x = 2a. Where can a third positive op6tq+ibbp5: charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0:f j1s9hfb3h w 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 against the force of7 ah)e 6wxq6latpc.: a gravity by the attraction of a fixed proton some distance above it. Howp eax.a76l a6 :h)twqc far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thread;dwqcg cenr-f8p ++ )nr:okm,s which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart umgd+p w -8)q: ernfrcc ,;+onkntil 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 magnitude of the electric f. mnilt/.t3l 1fsxe:/9 yqy axlv:6hfield at a distance of 1.0 m from the nucleust:3x.vx.q :t/l69f1y n ihs/flyael m?

  What are the magnitude and direction of the electric field at a 9*k ya; ggd 3l.vf ulx(+2pekndistance of 1.50 m from egxp *+ky .lvd;ank9l(32fg ua 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is th eriqtpi n -(q+xbk924e magnitude of the electric field at the location of the test chargxpt9eq 2-nq4( ib+rik e?

  A 5.0-C charge is 10 m from a small test charge. What is the directioncgt2c k4:iv ;c of the electricccgv2k t c;:i4 field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudel x+ ipj(pqo u*cs;0-e of the force experienced by a 1.0 nC charge placed q0*p +ex u-; ijlcsop(at the location of the test charge?

  Two point charges each have a value of 3.0 C and aree-,i ty-dfbxon xm1/b 8iaf6)u.6cgh separated by a distance of 4.0 m. What iu ogyfi6-t dnxxchf). ib6b m8,e a1-/s the electric 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 aai o3u0inqu 1y3ft5(mnd a -4.0 mC charge is placed atufi u0(iqny5t33 o1am the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark ,a ppqb 9.q9.;evq1g(h- qgycalz0hm of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Aty0hqq..g g,; ph-pqcm 1eqa 9 (bazl9v what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x =q xrv*6-,j uarj78rxrj 6q(f r 0.20 m. What is the magnit86j,juarxj7 rvq r6 (xrrf q*-ude of the electric field at the point midway between them?

  Three 3.0 mC charges are at thmbkz o;,t3 8m9iofv k/ukh h./e three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. F zh3m9 ht;/b,i mok o.kuk/f8vind the electric field at the center of the square.

  Consider a square which is 1.0 m on a side.blzlg:,x*/vlu 2 q g8y Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1gg/zb8ul qv 2,l:*xyl ); +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 a/b1p(g(:3cur+e z8zire) ltxvqni,d uniform electric field. What is the magnitude of this electriczze uc ( 81/:x(lq3irnt p)bg+vrie,d field?

  A particle with a charge of 4.0 mC hasup uiyd3f41hl d ):tm( 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 6t -t(jk (7xrry000 N/C pointing downward. What charge must be placed on th(trk(x j7 rt-ye ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -xs05 yfh3.nhyp)7mis 0 fb7x d2.00 nC. The ball is placed inside a uniform ehmxh sd py7fyxf0n)7.i 35 0sblectric 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 carjfo7r8:a1n6gq) s2 s ty4gdsiries a charge of +2.0 mC. What is the magnitude of the electrisaq:g 8i 4oy1d) fnsjt72 rs6gc field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wh:sjb:1yzozu orj)1.d7q2i 2sxl m1ekat is the electric field 6.0 cm from the center of the spherez :er1bs.jd o2q ymkijxl1u1:o z2 )7s?