State the law of conservation of electri f br/4pp1sgz onf481cc charge.

  Is it possible for two negative charg+)tbs )juano 8dkv 2z6es to attract each other?

  Is it possible for a positive and a negative chaa4 j-..xmsnudz1d q4 9xjrs1drge to attract each other?

  A glass rod is rubbed with a piw s)to;e v1+m )c4ba c(ajsuy(ece of silk. During the process the glass rod acquires a positivwo()js( eut+c ;a1yv) c4bam se charge and the silk

  A proton carries a

  The model of the atom shp1q tg low0ay24d du(0ows a

  A neutral atom alwaysudgk,7v utqds)98l-.n ic gy, has

  An atom has more electrons than protons. The ato 2:n7azpuutpp 4wy.r7m is

  Materials in which the elece:1 zt,he* qhztrons are bound very tightly to the nuclei are referree:zq h1, e*hztd to as

  Materials in which the electrons ar *29klayj(tz6a h v;ohe bound very loosely to the nuclei and can move about freely wiv6l9ao h(kahjy t*; 2zthin the material are referred to as

  A negatively charged rod is brought near one end of an ulncd*z y4j 5(-pxjv0tncharged metal bar. The end of the metal bar farthest from 0c5jvjd(- 4lt n*xpyzthe charged rod will be charged

  Sphere A carries a net positive charge, and sphere.u,wx :,uee sl3 fb2ko B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grw 3,,uu xsfeoe.b k:2lounded. Which statement is correct?

  How can a negatively charged rod charge an elecc 7o/a0ep7 4cbzl z9aotroscope positively?

  An originally neutral electroscope is oa -1arq.oqyxic5 0rmed 4v,7briefly touched with a positively charged gl-o 1.va4y0c5iqroq, rxda me7ass rod. The electroscope

  An originally neutral electrosce4v6j; iuun,yope is grounded briefly while a positively charged glass rod is held near it. After the glass rodiv6 nyeju4u, ; is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separatp5k+xrr 9zn:ae. Then a negative object is brought near the electroscope, but does nor+zkx ap n:9r5t touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A-g ,7fwk.xsmxs (f dv2 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 does not touch the negative object. At no time does either ball touch the negative object. What is the final charge on each ballxkd 7s-f(2,m wv. fgsx?

  Charge is

  What are the units of the Coulomb constanm,/ j3srmtemww 3y d, 0n.u(ott $k$, which appears in Coulomb's law?

  Two charged objects ar(h.p7 qc y1rqze separated by a distance d. The first charge is larger in magnitude than the se7 p.(qcqr z1yhcond charge.

  Sphere A carries a net charge and 3 wc5;*bp)zini cyjv 9sphere B is neutral. They are placed near each9vcw * ;5iij)zcnbp 3y other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each othwba(qf023 i eper with a certain force. If the charges on both objects are doubled with no change in separation, the forc2i3bf0eq wa p(e between them

  Two charges are separated by a distance d and exert mutual attractive fuqh12 ;c j,kyvorces of F on each other. If the charges arevu,;k1 yh2qj c separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the fo)m d-gmjek g5:rce between them if one charge is doubled, the other charge is tripled, and the sep5kjm )g-meg:daration distance 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. Wh p)r 1w srj2/k33sgbw-xz :tqkat happens to the magnitude of the force on the p)p/g-bkw :srkq2 s1wzt x3j3rroton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens tovc p 8oz;w1glj*0px3 /6rx6gydw*yr+aapy. r the magnitude of the force on the first elecr0yw ydw 1 pag/ly.r66z+c v8**a pxjgo;xpr3tron if a second electron is placed next to the proton?

  An electron and a proqsa 46 5/er2aj . t0tbnuullw-hnd8; nton are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electr5/uhu tn6r eab j.80;sqdln2-w ntla4on is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a seohsz: um. /x( pv+hu,ocond point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0h o/v( . x,:hup+ozmus 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 centroid of an equilateral triangle. Wheni0(eyx : fu7upd -pg;s a second charge of +Q is placed at one of the triangle's verti y ud xi(s7pp-ug:0;efces, 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 not a veg1ii2tvc sb;d)f i:u 72(wfe,rij s(y ctor?

  At twice the distance fromes9*ink( f0+i*s3zh u q ja1xz a point charge, the strength of the electric field

  Is it possible to hauy)( qfm0hj 1hvgws( ,)bgm a 8(,ylqhve a zero electric field value between a negative and positiv fb)s )qglw8 ,,(0muj(q hy ayvh1h(mge charge along the line joining the two charges?

  Is it possible to have a zg igmb5u j:l79ero electric field value between two positive charges along tgg:jb5 m97il uhe line joining the two charges?

  Electric field lines near psitive p ueinl:mi63ft/wn h6:oint charges

  The electric field showmn; c:6hgr)nnkif x l.mv6-3z n

  Can electric field lines intersx0sug/pmc/i8 v: 2.rtylq.ss ect in free space?

  A solid block of metdij(aori :x5/al in electrostatic equilibrium is placed in a uniform electr (/riji: xa5odic field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metals 0i6(kcllk-enz dl0( sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and theeik - kd(scz0l(nl0l6 surface is

  A cubic block of aluminum rew -2o- tjqnqp.ct /1-ew *hiqgsts on a wooden table in a region where a uniform electric field is directed straight upj/qot cqhit1.w--ew -p2n*gq ward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium nn9y* fj(tx c3j7 nh4ucear an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is g -* l6g5mizgwarounded. As compared to the case without the hollow sphere, the electric field g5 m6l- igaz*wat a point directly above the hollow sphere has

State three properties of conductors in vu+jwa 2lt ca+gl/ hzj8h5+0k 0zr3qe static equilibrium.

State Gauss's law.

  The charge carried by one 02wi,; f2;rps i)wu( +tglmx )ybu cmrelectron 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 +2.0r k n(//i;q6vs8 o1mri.elkjl0 mC. How many more protons than electrons does this piece ofl/k rrjs. ie;ol(8q6 i1mvk n/ plastic have?

  What is the charge on 1 kg of protons?.p *k ua8rjb*p

  An atomic nucleus has a charmuv2t8d f/ 8trge 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 ccd3pjuz w8rf6.9 n5v*0kp ysgharge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the elej6 uyk *5v9sgdn3fzcrpw80p.ctric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweuc0.tna-hyyy2 c: mw4en them is 1.0 N. What is the magnitude of the second charge?y ah 4ct:uw0 2ymn.y-c

  Two 1.0-C charges have a force between them of 1.0 N. How far apart a q fq+jh s7gwu;mrkk:779*lvw re they?

  The force between a b(nau 0j q2vi,mpa. 1ownv 44g$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initial ,l uv 7xfqdv,69af5ufly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.6vfaff,57,dv 9ulqx u 0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Th: fnyvdil0ff 59f: c2ne first charge is at the origin, the second to the ri5lnf :ffc2f :i9y vn0dght 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 chc4* fl8x jf/sgarge 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 magnig*fx4s f/8c ljtude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the followin5:q9pjdyo, rs7ti5 ipg 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 3.00-mC chaoi9ji :7,t 5pr5d yspqrge?

  A point charge of +Q is placed at the center of a square, and a l x koi/,f -kaqir)vz-t .(i7qsecond point charge of -Q is placed at the upper-left corner. It is observed that trkxq v-i)o (-ila / 7i.,kfqzan 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 (0.30 m, 0); Q2 = -1.yws cqvy4 pfs uuf1y-28n07 4k0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0f4pu7s1cns2k q 8yyw y f-v40u, 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 (0,8w9n 2, ndn;mx, trr9zdpg4t o 0.10 m); Q3 = 5.0 nC is at rddnzr2n8,np t ;4,9gw9 xtom(0, 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 equillon4ed toh 7dka6;h5-ateral triangle which measures 30 cm on a side. What is the magnitude of thdd hoan574lek-;6tohe electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +ld(syko 1 6ag0*spssr;d61yp4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possibly d1ps ;gs0p6l dr*16s(osykae 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*wiwayx y b3ho:8 f1y/.0 m. Where on thefy* ay wh 8yb/w31:oxi x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and ziql b7yp60 obg(1iie ,8 l)gacharge -q is placed at x = 2a. Where can a third positive charg8l71 zaii6(yip )b,ogeqlb g0 e +q be placed so that the force on it is zero?

  A copper penny has a mass :ewzp ,gi2ov5 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 of gravity by the attraction of a fixe9; aze8 x7q:v1dovajhd proton some distance above it. d8a e97 hxz:;1 vjoaqvHow far above the electron is the proton?

  Two 0.20-g metal spherb3rxd,pe y )p(es are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apaypb), (d3 epxrrt until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge+s/siri ea-.lk5e8 +l blp;q z of +40e. What is the magnitude of the electric field qrk +8bl- 5i.zpla; se+elsi/ at a distance of 1.0 m from the nucleus?

  What are the magnitudee1* ,h mmr0b0td xtdo*g /k2/sv ftz7e and direction of the electric field at a distance of 1.50 m frs r *2zo0/ 7dmttf,eex/1gt m *0kbvdhom a 50.0-nC charge?

  A 5.0-C charge is 10 m fg tf502nqz) gkrom a small test charge. What is the magnitude of the electric field at the location of the tesk5)qn 2f0tgzg t charge?

  A 5.0-C charge is 10 m from a small test charge. What is hfz/ )yo1 4ri9 ca,efdthe direction of the electric field,cir efzodfyh/a49 1 )?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude 2fz-03e/eff3z,+ jw co /f+hi yqjtph of the force experienced by a 1.0 nC charge placed at the location e cj+tj,fo // pez+hif 0zfw3h2q3f-yof the test charge?

  Two point charges each h7y7 :y- w6vvb+c v+mt/meqse wave a value of 3.0 C and are separated by a distance of 4.0 m. What is the s w+v v:y+eqtcmw67 /b7-myevelectric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mat(z7n,4vg 2p pp hpjicis7r9 ;rk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at thip7 ;ps29r4 (gtc, hjpv7pizne 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chjzu y9b cn* 25kbt(o0narge is placed at the 50 cm mac5y9jnbbz* 2( 0tonkurk. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 s39cu1w25 efoai hg 8dmC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the elecf u8e9 ichs5gaw13o2 dtric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side bkcs+tl2b3 sgy8; j/n0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fi +sln/b2scj;8 ykt3 bgeld at the center of the square.

  Consider a square which is 1.0 odu)yn07j7 vm m on a side. Charges are placed at the corners of the square as follows: +4.0 mC uoyn jvm 7d7)0at (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 wc u8ol /v 0at(flf3n4mjwp-;e3lk0y k hen it is placed in a uniform electric field.ofpw3 j llky/e4c 8kn-f0ul0ta;3(mv What is the magnitude of this electric field?

  A particle with a charge t43g 8 o+jefohof 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 elecc5;lt3wq , smw99o skmtric field of 6000 N/C pointing downward. What charge must be placed o3ww m,lkqo5ms9 ;9st cn the ball for it to be suspended?

  A foam ball of mass 0.150 g cdll)0g mb l)ljq 8ac/+arries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What arc/llj m 8l+q)db0a) gle the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the mrglcdpwz /;d4n l,msfy v 1(l.g0a z(:agnitude of the electric field 5.0 cm from the sgflr ;.:(l1,a(0svdzycl4gd/mw n zp phere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is l-z;pf0y a8ft+yxbf -the electric field 6.0 cm from thplf+t x8f;b0-a yy z-fe center of the sphere?