State the law of conservation of elo.. pppd y3 ,izn7,nogsgdj8 :ectric charge.

  Is it possible for two negative charges to attract eac 5r+hu o9q1ib tv6ig5dh other?

  Is it possible for a positix d/cu(8h1 cm xv:nqy2ve and a negative charge to attract each other?

  A glass rod is rubbed wopx:n. ev6d4hr 1p u 5nwok61 aiked2/:p9a sdith a piece of silk. During the process the glass rod acquires .eo u6d:r d appkp wn 5hi2ndoe19vx6a:41sk/a positive charge and the silk

  A proton carries a

  The model of the atom q;.6yp p- qftgshows a

  A neutral atom always hap,.cp;uzu 8ro-f vzv+ s

  An atom has more electrons than protons. dwcmp ,/c; pdcbo 4t(q e-lb;ix9 +)xzThe atom is

  Materials in which the electrons are bound very tightly to the nq. iz k0ahze (wjb)79vuclei are referredieb9k7h. zqv )wz0(ja to as

  Materials in which the electrons are bound very loosely to the nuclei and can mjzrlleo*n ( a y-3c41bove about freely within the matc (ljl4r*1obe3nay -zerial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. T6-4e obnsuii;ne+ ko 4he end of the metal bar farthest from the charged rod will be c4 niu+ 4;oens b-e6oikharged

  Sphere A carries a net positive charge, and sphere B is neutral. They are place oep4tv a,2 89aasrzy1d near each other on an insulated table. Sphere B is briefly touched with a wire that is grounap,9zav8y2 t aoe s14rded. Which statement is correct?

  How can a negatively charged rod charge an r 6xjh g z 814lwq.h(dabot9.velectroscope positively?

  An originally neutral electroscope is briefly touched wit 5ax)kk/ .a yi+;;l y9-dzkhlnwpipd: h a positively charged glass rod. The electr)d; zal: p-dil/+pki;any5.ykk w h9xoscope

  An originally neutral electroscope is grounded briefly while zlfz/ j 7vx,n43r eys+a positively charged glass rod is held near itj+4, zl/7esfvx y3 nrz. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and t 86pmlvppb v xj)e3t-0d4h4xihe leaves separate. Then a negative object is brought near the electroscope, buxp -)i4p jhbvme vd83xl640pt t does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tablecf18 3ilnl -9mo wls(a1 lb,sy. 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, ans siw-c8 mfb(l la93,1oy lnl1d 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 3 s u)*)wbfiwwmklq2nt9 3d.wconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancetb3 *(3w vc9bugqh): ujku0pu d. The first charge is larger in magnitude than the :3u buwk t3cj9pgvu (u)b *hq0second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed newp)0o;9 vq4cbai khg 3ar each other on an insulated table. Which )3ohqp 0ci9g w;akv b4statement best describes the electrostatic force between them?

  Two charged objects attract er k/k) o.ab diz)96pktgc*h7w ach other with a certain force. If the charges on b. * 7toi)gda9w)krkk phz/ 6bcoth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive t ,k6skdt4nqc s+r-q7forces of F on each other. If thct+- ksd4qqkrst 76n,e charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eal0h.z,epekh h nd15 v2ch other with a force F. What happens to the force between them if one charge is doubled ,e5dpnh hke2zvh 01l., 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 to

  An electron and a protonah u2qdarsk i/t,;o/i*c+:een + 0yra are separated by a distance of 1.0 m. What happens to the magnitude of the forcee++ai oane,u;q: *r y0/darkcht/i s 2 on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1*0jdcvx m 8ya2-o ;rqp.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the proton?2 ar8cv-m0 qd j*;pyox

  An electron and a proton are separated by a dorbjzb24; 8y pc c8jm .b5awh4istance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the pr myjccp4h;2j.o rza bbb4w885oton?

  A point charge of +Q is plac 4fsn n;8 k;z8st7v8xojpc2uhed 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 ch;s pj7h4; 8tx8kcv of82nun szarge 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 i:mrni+ bw;r* at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of ti:r;r nwb+m*i he 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 ve zn+f gcwwpp(m m:49(yctor?

  At twice the distance from ar.m )m,,oqt uoqgl;t- point charge, the strength of the electric field

  Is it possible to have cl93b )j,ot 2iwi05slkwlu-w a zero electric field value between a negative and positive charge along the line joining the two chargebj5o)lw, lsk9it- w03lw2 cuis?

  Is it possible to have a zero elecqvq2jir q5z.7tric field value between two positive charges along the line joining the 75. rq vqqzji2two charges?

  Electric field lines near psitive poipvx+e (do:q h*nt charges

  The electric field shown ;puydx-s)t4c4(f 2 o dep6jqo

  Can electric field lines intersect in free slqy6ud:ab ;t 2pace?

  A solid block of metal in/-c:dd -iuv.u rq ul;c electrostatic equilibrium is placed in a uniform electric field. Give a statement coni l.-u:uuc q ;-cdvdr/cerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are 520gre3alnoc9,l kawt7vzns o+ 9 ol4 each given the same charge, the electric field (E) midway between the center and the surface i0okn7on ,2ll tzr3+ 9oc54 w gavesal9s

  A cubic block of aluminum rests on a wooden table in a region wheregby6 1(zb6d vl a uniform electric field is directed straight upward. What bg1d(6v yb6lz can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an scg4h7 hbg nd(8 (nco1electric charge

  A positive point charge is enclosed in a hollow meta p g xu:xw*l7xi.i7x.0ju9cn ry:/qayllic sphere that is grounded. Ai9*u7y:c wjagi.r:n 7py.xx 0/xuqxls compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertij3)j 6;9 0 ghuujw-fi q,vq6y5favvcv es of conductors in static equilibrium.

State Gauss's law.

  The charge carried by onesu/odbt pfw , 1 p,n2gl*nilu71vo+f( electron 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 2k42gcrk*lu mv6h 2rd.dg *fg net charge of +2.00 mC. How many more protons than electrons does this piece of plastic havkc g2 gl*2urf4dd* gr2. k6mhve?

  What is the charge on 1 kg of protd )jbe8, ,fbz 73 c2zscbum g-l3kvq,hons?

  An atomic nucleus hasz w0uod ze9z+/xqnjo1.c5 f9t a 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 -4.0 mC (xa3lvl r-2w)lb fpm:, respectively lmlwxvf alr(32)-p :b. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m gl-:sx 8:gsfj from a second charge, and the force between them is 1.0 N. What is the magnitude of thexf s8s j-::ggl second charge?

  Two 1.0-C charges have a force between themx8w+ ccl;-x ee of 1.0 N. How far apart are they?

  The force between a e kjm5t)q ekkj2*xb :2$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiallhu)b* - omd)c7wizb, srb.p ifr78r+my 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separatdm8u7r + z m bbrpo)ci.whfi-r, 7)bs*ion of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the p ( 9b.hu-ul0-m ciajhx-axis. The first charge is at the origin, the second to the right at x = -pblih.ujh-c9 ua (0m50 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 xerefg 0j-7gg.-axis. A charge of +2.0 mC is placed at the o7 ggefreg0j-.rigin, -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 the charge at the origin?

  Three point charges are lo74 nj0ztrzugu.7wrv )cated at 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 = -1.00 m. What is the magnitude of the force on t.7wnu zr7vj4trzg0) uhe 3.00-mC charge?

  A point charge of +Q is placed at the centyb ga:e4 em-ba j(-(oter 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 o :bjey-atm -e(bg4a (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 = -1.0 nC is at (0,c7nwpuids 5p-f 3(p d )s,o*nu 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitudeip d5- unp) ps,nw u(fs3cod*7 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, 0.10 m); Qlwvh te4t. ,9sn52m(xbao9t 2pgw 0lv3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0plgt. vhwt4va9sb0 wl t2o2 ,x5(m9ne nC charge?

  Three identical charges of 3.0 8lk,7atikmym 1h z0x:mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is tlxz1 :kh8, m7ktima0yhe magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are 4p;,6xdw c-zo wbzb5 cw u,f,mseparated 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 axdzpmz c 6 of b5;,wcuw,b-4,wcting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4 h7l /f.atf03p wry9pplphxy- *p) bg9.0 m. Where on the x-axis can a third charge yfhyh *a7l pp. t r/l93p )gb-0f9xwppbe placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q i8s8: *h nqpneq k4etz0s placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zero qks8tp80 *nz:h 4eqne?

  A copper penny has a mass of 3.0 g. A totakbz e 97lzrt-2l 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 fixe :y4 yh w*j-xkej;z6vtd proton some distance above it. How far :vy;-z*jt64 wyxe jkhabove the electron is the proton?

  Two 0.20-g metal spheres are hung 3hobej0:ag27sr-j rv from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the ele - e:0hjr7o2 sarvj3gbctrostatic 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 magnitude of the ele bb7p t(hb71e n/ig6 i.pozcb4ctric field at a distan ieh747pop1z 6bg b/i(ctb.bnce of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a disir zerri 4w );v/;+w;arvngwh2 n;q r3tance of 1.50 m from a 50.rwrz; )3n n gvrevhi;wa ;2;wqr/ir4 +0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o ,v)t5 zbeaki3f the electric field at the location of the)av3ibt 5ekz, test charge?

  A 5.0-C charge is 10 m f wgagvmc *73611rsoanrom a small test charge. What is the direction of the electric16va7gc3 ns1ar o* mwg field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the-e6- 2 g+s-v ic.-jkh giex.nxic zex: force experiengin6k icighxx--e+xjvcz 2e.:se--. ced 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 sepoc2u;w ewxm1. arated by a distance of 4.0 m. What is the electric field at a point midway betce1.wu2mo; xw ween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and ao807wzae ie58/z1 vsrf(x sqr -4.0 mC charge is placed at the 50 cm mark. What i1w8 8ozrzef (a57rse0qvxs/ is the electric 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 chargeeak5rhis4t. x1qx(+nq: e6h8oq 5d cr is placed at the 50 cm mark. At what point on a line joining thh1at nrho q5q x.6 sec5eq: xkdi4+8(re two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at wqd s1p:ou hy5b7y:(a azb,5 ex = 0 and x = 0.20 m. What is the magnitude of the electric field at the poinshbad wa5 5bzupe, (1o7 qy:y:t midway between them?

  Three 3.0 mC charges are at the three co p 2gmf g r13t(yvfkwa)3k0ju9rners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electricgmu1gt f03py2r3wk)a( v fk9j field at the center of the square.

  Consider a square which is 1.0 m on a side. Chargs3q:dt*x2 n tzes 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). 2*qt3n xz:sdt 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 uniform elecykh0 4kna n ri2jt,:l8tric field. W:rlknnjyt,ia2 4 08hkhat is the magnitude of this electric field?

  A particle with a ch7.w.: zps jsluarge of 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 electri i 3z74byk*pkzc field of 6000 N/C poink*zib4 p7 3zykting downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge z*xrnbz+1zzj.jz sxm,14)lp of -2.00 nC. The ball is placed inside a uniform electric field, and is jpj*z)zzx1.nz 41,xrml+ bzs 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 z/ufi+pn 4)p p+2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's /+ i)punp 4fzpsurface?

  A metal sphere of radius 2.0 cm 8 7glyqd,cdz: ;h 9gsxcarries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of thedl;yscq:9xgd7, z g 8h sphere?