State the law of conserv70k0o (/flyr :xeryv eation of electric charge.

  Is it possible for two negative charges to attract eaczr )qk9 zei3)z; lmv-ewfez:/h other?

  Is it possible for a positive.xkflj22x j xd*w*n6en 5 jw)n and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the procexd cf0:spjn6l/.p 68dto u2tass the glass rod acquiresp d 6fd60na.sj 8xu 2p/ottl:c a positive charge and the silk

  A proton carries a

  The model of the atom shows cd.r6/ wrvo/ao(dr5 jm,gtzge( +i6m a

  A neutral atom always hazez* hgp9 xi1w6ro a)+-r qah4s

  An atom has more electrons thavkp3r m21a -tg xr3pv.n protons. The atom is

  Materials in which the electrons are bound very tightly to the nucld) sn4x/p cxb;ei are referrxbc;/ s) pxnd4ed to as

  Materials in which the electrons are bound very loosely to the m.23x9 r3c, m yxnrloj)cy0u tnuclei and can move about freely within the material are referred olxycr.,t9cx30y3j )2unmmrto as

  A negatively charged rod is broyiuh 0:;vpnv;;ux zj oz0s34a ught near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be ;p 4xz avov30uuiy;:;h0 zsj ncharged

  Sphere A carries a net positive charge, and spherefp/e- 8pc0t: +jls;qmr* d ,.bwe gwxk B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with pe grwq 0 :dbj,+x-tp/;l.8 ek*cmsfw a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positively?m/bvyl,81q b 9vkfwp2

  An originally neutral electros4cuhhm i+* +*trod x7qcope is briefly touched with a positively charged glx+ hudc*7hm q*t+4roi ass rod. The electroscope

  An originally neutral electroscope is groundesgrv hw5)lztp6..6 yj ky:jwb8 c. mh-d briefly while a positively charged glass rod is heldyv j y tmwrlh65 pkz.)wj.8csb-:gh6. near it. After the glass rod is removed, the electroscope

  A positive object touches a ndy26gkx6xm70- 6lux0n qfabjeutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not y 7laukx006f -qmnxjx662bgdtouch it. What happens to the leaves?

  A large negatively charged object is placed on/ yxh2+(d:er f,tye og an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rol2e/:g r,yot (dhyxef+ ls 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 cr z7x1rj ))hvk(fh/rfonstant $k$, which appears in Coulomb's law?

  Two charged objects a-ty mka d nzx-w)y,z 7)sly)-ere separated by a distance d. The first charge is larger in magnitude thaz-,wdyexy a7st l-)k) ) mnzy-n the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed d. ifxj8.ax93k9k srhg ;p3pk near each other on an insulated table. Which statement best describes the electrostatic fop9f j a93pkkhsg.d;8 i3x.xkrrce between them?

  Two charged objects attract each other with a certain for,s f4a).wt au7+twsw4bku* frce. If the charges on both objects r t ts.4sa7kb)u4,* fwaf wuw+are doubled with no change in separation, the force between them

  Two charges are separated by a distar9 - qspgzn.d/rf o /7zc+rn;fnce d and exert mutual attractive forces of F on each otherfp sdznon.z/rq;c 9rg7r+ f-/ . If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a fordstk5m7 pc9l(6 aq1 18fna wsece 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? cl8dn(a a6espwk7qf1 1t95sm The force is now equal to

  An electron and a proton are separated t(.h/yb q enrmf jyj539 mklx,zsd)0:by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second em xt9j( z3r.,ybk0q njfsl/y)5:mh e dlectron is placed next to the first electron?

  An electron and a pr-ntze fm q-76: blhg2doton 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:7f-2bhde6 n z mtqgl- placed next to the proton?

  An electron and a proto b8.s1y46ji 54zieaw( sa jmshn are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is (4z 1sa8bw a5hsji ies6m4jy.moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center 1+r 9qx l 8dv22urs5 soepnn8iof 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, identqp2r u9 xvo58+ss21diler8nn ical 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 -64oqtg/d rz +mb.mho triangle. When aod r/gqtzmmh.64 -ob + 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 other vertices?

  Which of the following is not a sn 6c)af wf09yvector?

  At twice the distance from a pointqvxcrkb 75)a42u5p8u6 lm 98saebg pi charge, the strength of the electric field

  Is it possible to have a zero electric ip/k qr9.8y x y9utxx4ydx+4afield value between a negative and positive charge along th.4x+/yqay r d9t8 xyip k9x4uxe line joining the two charges?

  Is it possible to have a zero electric field value between two posit 5o1mghubt 1v xaq ,37 pibzzc)0qq18give charges along the line joining the two charz,13t1b)qp q gag1uo 8mb5z qhv70icxges?

  Electric field lines near psitive poinr4 8bj9:gxatsr 1dm q9t charges

  The electric field showngob pf.w 63r(7wcc x,z

  Can electric field lines intersect inz)z6*q, 7xc;i fidhs q free space?

  A solid block of metal in elect gfge;la;vq.lb- n:1h/0csjq rostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in:fl;/ lbqcs1nh; gqj e.0va-g the block's interior.

  If a solid metal sphere andro62 6/)d 2ch ,kstvb ax6eiibe57c hy a hollow metal sphere of equal diameters are each giv6526hebdvt/)ccx i,bhkr 2 yo i7sa6een the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table i06 -7cb ijuqngn a region where a uniform electric field is -ib6 g7qnjuc 0directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elecm2f. u1bq;+jtuf-u vatric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundd6rx2*ditog+j s yp-t0h/zg4) -cuyied. As comparszt-6t c o*rdyig0gx ju4h2yd/ +ip-)ed to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in0p(ezeu08 gp/ dn ye3q static equilibrium.

State Gauss's law.

  The charge carried buy s :0yyww3zl( l+xk;y one 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 net charge of +2.00 mC. How my kh)g1.nym9 my4 uih;any more protons than electmig19m )hyu yn4 hyk;.rons does this piece of plastic have?

  What is the charge on 1d6br9-h h gr1v kg of protons?

  An atomic nucleus has a cha.n 3n6eajrf srlf4c 870 cazp.rge 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 bj w ny3c tpbz1r;7ydmz,*y+(hg i 2i;-4.0 mC, resy1mdy;3;yij( h+b7w z2i * ng tcbp,zrpectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 zy.y0 ad y:01ze phzbd-gn5t) N. What is zgh5ae .0z p-yz0 d)b:d 1ntyythe magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far aparss8 n58( ulf4z im.yd)vtdy:rt are they?

  The force between a hr6f06z5 zupg $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, ivq247bw sv1+*avjn b anitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the elvb4wn1v+q s*v2a7jabectric force between them?

  Three identical point charges of 2.0 mC are place;rj1ml e 6jpl5q* :c:saxc / tpzfd,b7d 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 cjcf z;p1lb:cse5/mrt: l,7 6qja*p xdm 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 charge4v6+8 h w+wbh lrqsvpt *a6bkh8v05uw 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 w8qb4a+h0s uw6pw6 vt*b+ 8vv5 rlhkhare the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following e.(en iyd8;a :d cl.vxpositions: 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 tn l.yce( 8dxdi .e;va:he 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, anwrqq1 u yosr7 sj9n+ g5i20a49blw.pkd 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 o4j rya71u9l. gs q5q0snok29pwbir w+n 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 ),furtic w )*qkru/(/qz7u mg(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is uu(rmc,f/twi* )kr7zu q/ qg) the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 mha/)n-l 3vzvu5rj *t a, 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 nCu*na 5vha lrtj-)3v/z charge?

  Three identical charges of 3.0 mC ar sg8kvd-o1u )ce placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the)8cvg-s o1 dku magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated byc50hi)h9 x+jc5rd d vw 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 acting on x5hwd9h 5i)rj 0c+dcv it would be zero?

  A +3.0-C charge is a/s7wshvhs-9w no3-ilt 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 itvl39h -s ws7swino/h - is zero?

  Charge +2q is placed at hdx0y gqfq kt9 /6xp )kcqb/.,the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so tha x fxc9pkd/t6).yq0hkg,b/q q t the force on it is zero?

  A copper penny has a mass *zibz2xzbw5 fg62l dc8 h.j1an en7rsjtt)00 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 ofwktk+ u-j )*ex,xnf 6b gravity by the attraction of a fixed proton some distance above it. How far u-xf n,)w tejk+*6 xbkabove the electron is the proton?

  Two 0.20-g metal spheres are hung ,)i yo gxis0a+from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostaas +i,)0 oixygtic 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 el,sxj+ l eo8 p,m.3dikdectric field at a distani38,+dejxkls .pmo, d ce of 1.0 m from the nucleus?

  What are the magnitudeih lb+oh/l*5w and direction of the electric field at a distance of 1.50 m from a 50.0-nC charg io/ l5+b*wlhhe?

  A 5.0-C charge is 10 m from a small test ci:mtk pj-a3sl(btb 0p dpprq+:u1c 3 6harge. What is the magnitude of the electric field at thei:-b: rm3qtpbal 6( ksuc310jpdt+ pp location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direct 4b54 s.o:ep xr9b otk1xvxtp/ion of the electric fierb. tepobx 1oxk5 stp4 v/x49:ld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudeonwre9+h8l1 mn j-* km of the force experienced by a 1.0 nC charge placed at the location r wn*nm+9lmhj o1-8ek of the test charge?

  Two point charges each have a value of 3.0 C and are separksi glo8jcm8p2bc*l3, m/a h/ated by a distance of 4.0 m. What is the m/b3ijsp/k 2 gh8llac8 ,om *celectric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm markc b09z k8cvn9l of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at thb vl09c 9kn8cze 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a 2(t p suq,3apg-4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the eleca3tq(gu,ps2 p tric field zero?

  Two point charges of +3.0 mC and -7.0 mC ,.cpej8.toui+ fnzw3 0xp zd/ are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between th.0idj ep 3fz ucpt.o,xzw /n8+em?

  Three 3.0 mC charges are at 466lhhu w 7iveri4+0zwgbjg 2the three corners of a square of side 0.50 m. The last corner w67 hlh4w rgegb i20jiz46v+u is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square whic0d g1v eac/+ahh is 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (ae+ac0h1v /g d1, 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 placedpkntj og:5/r.) (flna7au(f a in a uniform electric field. What is the magnitude of this electric 7ua(n. 5fln ()fpaako g/rj:t field?

  A particle with a charge of 4.0 mC has a ma9,a- xhg8 9kegz6we :i6ykemcopg(,oss 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 4-epl j5zv+uk0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?4+5 pzu-lvej k

  A foam ball of mass 0.150 g carries a charf .lq;4t.m6alrvvr /2 8jykcrge 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 of the elec ay/q clkr 6r. fm4vj;rl8vt.2tric field?

  A metal sphere of radius 10 cm ca.az3cs+5xs gdrries a charge of +2.0 mC. What is the magnitude of the electric fiels5g3czx as.+ dd 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge op 6wju5 z(m/sxf 3.0 mC. What is the electric field 6.0 5x(m/pw6js uz cm from the center of the sphere?