State the law of conservation of electric c q6z5cjl 6me*rsr e+ (o0hele;harge.

  Is it possible for two negative charges to attract eaa;q a 28z5cjshch other?

  Is it possible for a positive and a negative charge to attract eac l706uq;y ixido1mxt 8h other?

  A glass rod is rubbed wigj y9(8n*jygo(jl( d9b: oju bth a piece of silk. During the process the glass rod acquires a positive chargebjglj((u jyjo8y(b:gnd9 o*9 and the silk

  A proton carries a

  The model of the atomn /m8k5/p7-bsra/3fwi dn7 +yohmk yn shows a

  A neutral atom alwaysz;a y.53o(z4rtgumys)e y,j hmww:7 d40n zkv has

  An atom has more electrons than protons. Thek,hz w8 (x4.d7-9v:q3wgpqo v a2tti yx dnhi9 atom is

  Materials in which the electrons are bound very tightly to the nuclei xwqrox3;* *a2x ci*pcare referrexco* i xrpqwax32; c**d to as

  Materials in which the electrons 5 i e0vhv;hb*hare bound very loosely to the nuclei and can move about freely within the material ar0hhib;5 evv*he referred to as

  A negatively charged rod is j0pi3 )+-wcn 6hpvm8rixt.dbbrought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod willip)836mhpx0b.dcj+ vntw -ir be charged

  Sphere A carries a net positive ch:ik. r0x z c.qukw/xf:8bmni,arge, and sphere B is neutral. They are placed near each8 kizx.k w/0b:qrm ic.:f nu,x other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chavmu,pfc /pr7arb m2-tx sgn9a 26, n5jrge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivelqd3te7n mb-p :y charged glass rod. 3tbd:m-eq 7pn The electroscope

  An originally neutral elv(nf n -,::wtdx8da ecectroscope is grounded briefly while a positively charged(dnx,f8w t:d nvcea- : glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, a7gm)g5gx5l b-hb3 uognd the leaves separate. Then a negative object is brought near the electr5ol 5g -ub gb)xm7gg3hoscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placednsbpb+ .gtr.q6 c 5m2v 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 rolls forward, but doerp6stb+mn .vg 2q.cb5s 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 theemzg ;4uega-9 Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance +qswy acmd;(3d. The first charge is larger in magnitude than the secondwy3;d+asm (c q charge.

  Sphere A carries a net charge and sphere B is ne /kkb+ fr/ynv9utral. They are placed near each other on an insulated table. Which statement best describes the /br9kf/ vky +nelectrostatic force between them?

  Two charged objects attract each other with a certain force. If tgc dd).t47 olbhe charges on both objects are doubled with no change in separato7dbd) l g.4ction, the force between them

  Two charges are separated by a distanc l xqjau:vs4/ xw,g3r+e d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of v,wsa+x4qgru l3xj/ :d/3, what are the new mutual forces?

  Two charged objects attract uin60f 9y 4scceach other with 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 u6icyfsc0n9 4 force is now equal to

  An electron and a proton are z. xye+h8 wi:rseparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a sec:z +whrix8y .eond electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1vgmw *4m *qxs.rhk7.t .0 m. What happens to the magnitude of the force on the first electron if a second electron is placed nextw*.m*kmxt7 vr4qg .s h to the proton?

  An electron and a proton are separated by a distj9ecb ym9sp2w4- vl4 fance of 1.0 m. What happens to the size of thewpvfjy9 4mls24b -9 ce force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is ;-v2aow*s-u c qjihv( 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 square. What is the magnitude of the net electrostatij*2sv-w( ia- vc;ohquc force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilaterala n3q :yu,vzt8w80uw+hp n ol7 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 othzny0 n +7,pw38tuwau lq:8hvoer vertices?

  Which of the following is not a vecinqq6doyx e:9*tv2u) tor?

  At twice the distanc dpl8tr 3jm9r0e from a point charge, the strength of the electric field

  Is it possible to have a zero electri ngr;)h160apedlr6t g+r md4fc field value between a negative and positive r)m0dthrnld6r1a pge+g;f6 4 charge along the line joining the two charges?

  Is it possible to have a zero electric fieldo3ru-u8 bd8t y value between two positive charges along the line joiningy to8d bu-8ur3 the two charges?

  Electric field lines 9wahfq.xy3ghhoho 4 v(a0x2 g9w6 : mrnear psitive point charges

  The electric field s9u72t/skjc+ qabv /pshown

  Can electric field lines intersect in free space?b kc(h(+cvwgc1h o.jd 3j+z4q

  A solid block of metal in electrostatic equilibrium is placed in a uniform ea1ohc 0,zwlu3lectric fielhcoa lw,1 zu03d. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal knu,:u. eede2 diameters are each given the same charge, the electric field (E) midway be uk e.:dnee,2utween the center and the surface is

  A cubic block of aluminum(myt eczpv4)cq(b1s f.o:: bg rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfac cebf1.bv )qsgyzptm4 ::(o c(e?

  If a conductor is in electrostati;b o;yz7o:lz mc equilibrium near an electric charge

  A positive point charge is enclosed in a hosq 4i-at; h*mzllow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at ata hmq- sz*;i4 point directly above the hollow sphere has

State three properties of conductors in stapb fs7f s:6*t(tywv+ n. bnfyvx25q)e tic equilibrium.

State Gauss's law.

  The charge carried by one electroo+e l:kk:bj(+0l6wiwl fkuw:a qn7g ; n 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 pmbp2t wr(yn asyc0 *.6rotons than electrons does this piece of plastic have( tc y*s.6arn2pwy0bm?

  What is the charge on 1 kg of protons?iw 0;./lx rnp )ip4jxx

  An atomic nucleus has a f kx/y:wb6 9jr*i ch,urfj,k1h yf5 5xcharge 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 w+c05iw+lonhxc 0ix4-4.0 mC, respectively. What is the magnitude of the electric force betw+o+04cwxwi l0ch x ni5een them?

  A 1.0-C charge is 15 m f ysr9n3ehs j.1rom a second charge, and the force between them is 1.0 N. What is the n.3 ye1rs9j hsmagnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are 8r+vpgr1 n qa)they?

  The force between a i,v3/ n6c k ;li qu2d ls2z,l-bfomfc)$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiz*rm5-e/mhvmzi-t r :m7w9od ence a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electricm t/rm:d9hm mvi z--oer w57z* force between them?

  Three identical point charges of 2.0 mC are m q.8cgy,yc- oplaced 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 directi mgc-yoy 8.,qcon of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axdg )+u zg,h902iki 5g +fwf :im-epcrcis. 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 whichgfcz pc9iu e :,) h+0gd-igr5fmk2w+i acts on the charge at the origin?

  Three point charges are located at the fotn +5kgx1 ;r zlgt(ah 6erd0z0llowing 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 mer0zt 6tkaldz+nrg gh50(; 1xagnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a squar7yu1fo)i yk azhf p 6uj,b*e9;e, 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 positi7ffbuiy* haoe k)1,pj6zu; y9ve 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); Qukxg)a8( *mwn 3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 58gxu )amw* n(k.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1 -4n jp92za; 2g saxz-*wvtsph.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is tv;zap9-twz s*jhsp -gx2a2n4he 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 equilater:6ie/ apdsne6fr 6ddyubx(o3+3c 2 uzal triangle which measures 30c+ae3:yi6 2bpf(s/xdue r z 3dun66od 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 separated by 3.0 m.-k*.zu9l3mlb4 fhuuunn -et(yrwi6p* e f9 b+ At what point, on a line between the two charges, would it be posnimewf h 39tu bl*u9+rnf*euz .k(p--6y4b ulsible 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 origiwot;s1rp r/*x9 c3w aoc sj2;an and a +9.0-C charge is at x = 4.0 m. Where on the x-axi1t/wow2 3j;c 9sp;cr saa*rxos can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is ka gmq*pnu:z vsw8 7y* c *-sm4,txvx8placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zerok gc*xm y,pa7-x8 sv:* n vu8*mwsqzt4?

  A copper penny has a mas9x/*gytk86/u lyh3i 4 ttdek ds 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 against the force xyzwk .:opu6 rvy+f6 4of gravity by the attraction of a fixed proton some distance above it. How far above the electr6 +x64 ky:.voy urzwpfon is the proton?

  Two 0.20-g metal spheres are hung from a common point by n cdy0 /o+w)vu0q-xj vconconducting threads which are 30 cm long. /u-cc00)v xdoqy vjw+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 r 2h;mtns:p7amagnitude of the electric field at a distance of 1.0 m from:2t a r;h7smpn the nucleus?

  What are the magnitude andhh7- q pd8+3mp/zz +lv oxkh)u direction of the electric field at a distance of 1.50 m frov 3+udhohx /+z h8mpp qlzk-)7m a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnij(f5aiq 3/r kvtude of the electric field akva5 i(j3q/frt the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of a loar dm106t-the elect dr0ta6m1o-la ric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitud60-b3hs u cf.p711r bj m3mkgmnkddn0e of the forcr31m.jh dk bfgs7nd0k n0mpmu3 1cb6 -e experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by at zvw1 woc smxla,gk:o,34))d distance of 4.0 m. What xm 3zl)cv:ow k4, w,adgs 1)tois 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 n7 57.xtc+og1g9 antv lj-o.rl asu, aand a -4.0 mC charge is placed at the 50 cm mark. What is the electric field a,g+tu9nx 7c o-gaslln 5t.7a j1o. vrat the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.ey,o1+z*z 1s ft znbs7s3-cvv0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is v +zs1f 1es b7 ,zocnty-z*vs3the electric field zero?

  Two point charges of +3.0 mC and - (/ bc:onvn)ti7.0 mC are placed at x = 0 and x = 0.20 m. What is the i(ctvnb: )no/ magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners oflo;pb65s7 1yc 80imn es4fy go a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Finicyeg0ols onms81 54 6;pfy7 bd the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Cj8ej;fltl.s5 vq*- keharges are placed at the corners of the square as follows: +4.0 mC atetjl 8-fkjq .5elv;s* (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 of 5.0 mC when it is placed in g hb b, ef80rknl 3qljh/sp4-0a uniform electric field. What is thb rnq0fjs/4,lg h8 e-bk0l3hp e magnitude of this electric field?

  A particle with a charge ofz9*jpjklu,mh8 z 08kw.u/:2eknf wav 4.0 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 ftlq *,-z /u/cfal t0hqield of 6000 N/C pointing downward. What charge must be p0*f ltla ,ct hzu-q/q/laced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carriesldtxxx/ n h,m2u.e 0*y a charge of -2.00 nC. The ball is placed inside a utnhx0*/mx,u. 2 d lxyeniform 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 qf+x) lgdfk;u o3)u7t the magnitude of the electric)fg 7t)3q;uox lkfu+d field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carll.cvo8cza;vi2m :yl5lf (w b 4njs /7: fsf1yries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of v/1 :losjisv7c5lmfy2:.cl;f 4 (flna8wb zy the sphere?