State the law of conservati5pt)mm k* tll9on of electric charge.

  Is it possible for two neg ,q7 s3 fp esqpu:8udtb2t3c(zative charges to attract each other?

  Is it possible for a positive and a negative charge to attract eacsw+c v/5cuiu np p8l00+)idz d y+nmb/h other?

  A glass rod is rubbed with a piece of silk. During the 9 gz pp3awh1gk,5chj4) x,c wpprocess the glass rod acquires a positive charge and)p wzg19,x w4h5jhcapgk c,p 3 the silk

  A proton carries a

  The model of the atom w9skh1av z c(ky**p8c shows a

  A neutral atom always ha 5m0g6dmu2af zs

  An atom has more electrons than protons. The atomoh 4fdwg +f6/qajh;*wg83 tq m is

  Materials in which the electrons are bound very tightldt; r-wn29,uxy.0 cf;t+ *jkgpnt sigy to the nuclei are referred tx f -dtk.y 9 ,p t;*nj0tw;+irggsn2uco as

  Materials in which the electrons are bound very loosely to the nuclei anaf)p ;e4zc6xg2 o;v-3a h pgrsd can move about freely within the material are referred to asp3vc-;grs2a6p a o4 zexf;gh)

  A negatively charged rod is brought near one end of aoe;ydpk**eo1 ,q yhs :n uncharged metal bar. The end of the metal bar farthest from the charged rod will be char*qeo*eho,yd s py;:1k ged

  Sphere A carries a net positive charge, and sphere B is neutral. Theu0 zd8x4hg5jb /aqk m(y are placed near each other on an insulated table. Sphere B is briefly/ zxq(hmj gudb8 a540k touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod char2vea tscmz,* yt0i :gpy16kyp pm92o*ge an electroscope positively?

  An originally neutral electroscope is briefly touched with ap)*,f nnbr ,s urh)rqk9e,q(j positively charged glass rod. The9 n )urf s,qh)*nk,er,(b prqj electroscope

  An originally neutral elec. stg5 tzo m/./(hhnm(h6nman troscope is grounded briefly while a positively charged glass ro.t a5(h/gz tmhnm.6hnn (s/mod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroj b660e eqniv0n:cyj 1scope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaveby6n 6qc jje:e001in vs?

  A large negatively cv q9sw/cf p9m6harged object is placed on an insulated table. A neutral metallic ball rolls straight toward the object /vpc9s96qm wf, 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 ball?

  Charge is

  What are the units of the Coulomb covm1gst6j;fx j 1xw9l2 so j h06:s;ezqnstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thd p )jzml,ay2n s1gp 8*l-s2lve first charge is larger in magnzls2d pjgap l2mv1 l,*-nsy8)itude than the second charge.

  Sphere A carries a net charge and sphere B is neug iyuq,t -j9rand1,m9 tral. They are placed near each other on an insulated taim- 1tu jr9,,9dqayng ble. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the char. dqxt+cgu jy m2jtu qz-n,0k32:e:ftges on both object gtny2j: ct q,k2mzduqe0: .jtux-+f3s are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attract(h5/rdvwyi-hmg+ ulmm 4j(-olp 71 reive forces of F on each other. If the charges are separated by a distance of d/3, u(mv j+r 41hirw -5lmo7mp-le y g(dh/what are the new mutual forces?

  Two charged objects attract each otn )z9rs m-)aqhher 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 force is now )rmaq9h z sn-)equal to

  An electron and a proton are separated by a distance of 1.er xss*-mv28l4 eim)b0 m. What happens to the smevm*r exl 48)-b 2ismagnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a protxwj -t p ;ik-y:d-3cwnon are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the w-;k -c xy:jp3dwit-n proton?

  An electron and a proton are separated by a distance of 1.0 m. What hfvqdc 7d) h ze291rq;tappens to the size of the for1hq;d 7 ftcedzqvr9)2ce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second poixlcifuszt0lep o+ 0-7nqz c8.) yd:7int 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 l 8n)ix tid0:7ls -qcu zz+yc.7pof0esquare. 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 place.ie- /*v;l)ez9ixkqo +bkmf gd at the centroid of an equilateral triangle. When a second charge of +Q ol) zv /gke *imf+9ki q-bx;e.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 not a vector?2,56l j6, nlgwtvhe3r9ijwgs

  At twice the distance from a point t ,3gadm3kk l)lc.gyau9) z y7charge, the strength of the electric field

  Is it possible to have a zero electric field value bex7ar/tx0 yorxh8cdz1q,q yhgea 3 ))6tween a negative and positive charge along the line joining the )03r1yq,6)ry/zd8 xe xthcaxqga7h otwo charges?

  Is it possible to have a zero eleci6 cl.r,bz yvvp)c:2 ctric field value between two positive charges along the:.p2cc r6vcz,bvil)y line joining the two charges?

  Electric field lines near psxq+t;qpu 1nt ee0 .wz7itive point charges

  The electric field shown s01 u/l qr5eadh*qdy,

  Can electric field lines-/- jy4 l 42,xzspeeqb hyt4g6gxzi2b intersect in free space?

  A solid block of metal in electrostatic equilibkwig6t + scth7v:t k76rium is placed in a uniform electric field. Give a statement concerning the electric fielgk7v+ tsik 67hwt :6ctd in the block's interior.

  If a solid metal sphere alen2 xq6-un/p nd a hollow metal sphere of equal diameters are each given the same charge, theen xn2p6u /-ql electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regx )(cg (2pqoqbpu s4/aion where a uniform electric field is directed straight upward. What can be said concerning the charge on (2boq)pupgx/4( ac qs the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chargye0hc.5w jl7se

  A positive point charge is enclosed in a hopde)jrz8yt xf y .q7,3llow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly a)7fexrpjy,q3t d .8yzbove the hollow sphere has

State three properties of conductors in static equilibr olbyw1y svv *)pjx3 **(5bonrium.

State Gauss's law.

  The charge carried by one electron i h9( 9u.or02-duf4+u bxqthn old pxk2s $e = -1.6 \times 10^{-19} \; C$. 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 wn7ow 3(xasa4mC. How many more protons than electron( wxs n3o7aa4ws does this piece of plastic have?

  What is the charge on 1 kg of progl/g6l *)xz:sqdr:d.f9ks i0nofv w 5tons?

  An atomic nucleus has c9 h0xw-f:)z fyj,d1 knaiw6 ma charge 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 uhcpzx(j zb owhrt3/rj /8q035y z-2b-4.0 mC, respectively. What is the magnitude of the electric force between themj-3yhh z0b2 /5crb/ wru3o8z(zx qjtp?

  A 1.0-C charge is 15 m fromnp qivkthiz09rr f4y/,b i0+5 a second charge, and the force between them is 1.0 N. What is the magnitudeik0,ip0 qhy+r4 z 59frn bvti/ of the second charge?

  Two 1.0-C charges have a forxdorzpzhly r 2)5l6,8ce between them of 1.0 N. How far apart are they?

  The force between a en-kh68iommsotq 2)yi.5;h c$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cmw 0quu37;ybtd apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric ;3y7buw utq0 dforce between them?

  Three identical point charges of 2.0 mC are placei,( kyw+mh ypi(ezc+(d 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 direction of the electrostatic force which acts on the c ik,imz(+ e((+hcwy ypharge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed at r+ h7xk :oll2rthe 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 which acts on t:rlrhlkxo 7 2+he charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x :k s,fgk +0oey= 1.00 m; Q2 = 3.00 mC at x = 0; ko: +kye,fs g0Q3 = -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 placeal*ii1.qki * jd at the center 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 th* iji q*lki.1ae 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);t b2q5xj6pddg3jnq q0:gu -c+ Q3 = 5.0 nC is at (0, 0). What is the magnitu2 qgxndq3 j-+5pt6bc : ud0gjqde of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0+cph; +:) lhr8atqfqjyg fqzqx ):hv0-k8q w *.30 m, 0); Q2 = -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 on the 5.0 h-8x 8jaklq)++r)qt:f p zg c*qyqhfh;w0vq: nC charge?

  Three identical char/d):evdfjngt yt a l-h2y2c :0ges of 3.0 mC are placed at the vertices of an equilateral triangle which measvt2ht-yc fdgn:e )0: d2jla/yures 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 +Q and +4Q, which are separated by 3.0 m. lxp1r yk,15zeo4wb e.3cka6qAt what point, on a line between the two charges, would it be possible to place.ka4xy1c6rle 3 wbepo k5z1q, a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is ac m ,vxp/tf.*rt the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it , tpfc.*vr/mx is zero?

  Charge +2q is placed at the originx ,rno1 hseq65w:u;t73t ov af and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that:; 3he x,71 twufsn ro6ovaqt5 the force on it is zero?

  A copper penny has a mass of 3.0 3+c* 95yxwbaa uga7d+a,kzcfg. 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 5n)0p. ach jfmr9 el1sof a fixed proton some dis prfsc5 e0n9alh j).m1tance above it. How far above the electron is the proton?

  Two 0.20-g metal sphere75s6m5wel4shh -zh c ys are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces -sy7lhm5we4 c6 s5 zhhthem apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a cha;snbf; i7ty zx9hf-,j jyb: ;vrge of +40e. What is the magnitude of the electric field at a distanceb,;tyjyi x vf7-nb:f9 szjh;; of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance jj30vn- qcea isc26q)fcp7n, of 1.50 m from a 50.0-nC charge?023,qejpa 7 fcc -)svnnqj6c i

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of tz 9:ul d.)5d. sqy w uyij9lirsjx,9n2he electric field at the lox .izsj d5, w9 9q2ylu js:)ruiny9d.lcation of the test charge?

  A 5.0-C charge is 10 m from a small test chava,k/6; 6 syzhk3 vufrrge. What is the direction of the electricz,/ ysu6v kv3h;k6far field?

  A 5.0-C charge is 10 m from a small test charge. What y .yd:mn vb-m*is the magnitude of the force experienced by a 1.0 nC charge placed ab m:.vmd n*yy-t the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by abn.27zzqt1bt distance of 4.0 m. What is the electric field at a point midwabz1n 2t 7bt.zqy between the two charges?

  A 5.0-mC charge is placed at the 0 k;f uwgciarv -.-v*w) cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What k c-aw uw-) v;r.igfv*is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cw+ ; htmxorh5ze/ rc4)sov,c;g i3v d0m mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a li3/ x o0, ve hmtov;)w4+drirgcsc5hz; ne joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x m y,./4;f7 tnlwir 7e d9egpul= 0 and x = 0.20 m. What is the magnitude of the electripf/.m94yetl ng ;d7uwe7i ,lrc field at the point midway between them?

  Three 3.0 mC charges are at the three corners ij xj0n wi: s(txi((3tof 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 of the squar(0it: jsn 3x(t( iijwxe.

  Consider a square which is 1.0 m on a side. Charg *yhit+4xpgahz(y 7m 6es are placed at 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 is the magnitude of the e( 7yy*+zx m6tia4phhglectric field at the square's center?

  A force of 10 N acts on a charge of 5.0e3qe oqg 3w(vg*+ 5x-l qwpk9f mC when it is placed in a uniform electric fieldp 9 +f33 xqoqwvq5egkgl(- e*w. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has as; y*srlrv i+ooy6h5 ) rp,2dh 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 idzp6x5)ihewclly 2 s/+/ ko8 ls placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspendezp5 e2 w )ilh/xl6o8clkd/ +syd?

  A foam ball of mass 0.15 i.ezlr qx13)mir7v h2tkcjjk1a446j0 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction xa7i mz4t l3i12 hev)1k4r jcjjkr q.6of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What ie kx 6ka7 30r2a i;us:n-drmwhs the magnitude of the electrsa 3kmw-xr huik7nae;6 r2: 0dic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the uoe5raai4/8qfsv 0 6hzn 26ztelectric field 6.0 cm from thezefvs64 riu/5 0toa 8n6haqz2 center of the sphere?