State the law of con9;sfn 5ml/ thz lx.af+s0 n*zfservation of electric charge.

  Is it possible for two negative charges to attr4bk j;xe),pjwt:p5ohvun.k + act each other?

  Is it possible for a positive andda+-zeuv5h7v) g gdo- a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the procja4cb n;gf tm6g ue,:s y*(2usess the glass rod acquires a positive charge and the silksubf n4 ;s(ym*cg:t gu6aj e2,

  A proton carries a

  The model of the atom s7g ecptr4ie r0:duj (5)t htctx vq(89hows a

  A neutral atom always hw* m+cyo7lec j5s 3/ +blkp1nnas

  An atom has more electrons than protons. bgtme-jf,; ecbk- ) t:The atom is

  Materials in which the elecff:v47e1qle ajqy wntz5 mj101k vv) /trons are bound very tightly to the nuclei are referred tovt e 4qqm15:/11 je jyfa)w0n7fvvkzl as

  Materials in which the elec,51hg iujm rs3trons are bound very loosely to the nuclei and can move about freely wi 13igmhu5j,rsthin the material are referred to as

  A negatively charged rod is b wia0+q6)ha ,q2v pa lev(k(kb3e:rbvrought near one end of an uncharged metal bar. The end of the meta6biq(eah 2q,v0 kkv) w(3rv:la+pbe al bar farthest from the charged rod will be charged

  Sphere A carries a net positive oc1vgmt;g62+h rz 1jtoif: 3kcharge, and sphere B is neutral. They are placed near each other on ankgfthg 2i+ojom :z1v1 3;t c6r insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an el/ /zaoz0 z yh8rrc:s2rm 0i(v v:yz.spectroscope positively?

  An originally neutral electroscope is brii0su 42rs;can efly touched with a positively charged glass r2sc4;a0 nrisu od. The electroscope

  An originally neutral electroscope is grounded briefly while a positivev1f-fjsgs1w39 pvib c)d;8e tw /wt;nly charged glass rod is held near it. vcf jfgst;sep ;- )91wn/i3t ww8vdb1 After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the lg bs9+-4e+ klqkzl/ hueaves separate. Then a l4elhk+k+qz9-b g su/negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is1cvs( o:;5bp aaz(s6tewpa;g placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral me actaep;p (6 5z1w; :avbogss(tallic 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 t7 6cvf q2v4 n6tdx. -9 ce1,upymypdqnhe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separatedaq/ob lq 4ppruq3,4 r:sbq/2p by a distance d. The first charge is larger in magnitude than theo/ qqr43u qbqrp/spba 2p:4 ,l second charge.

  Sphere A carries a net charge and sphere B is neutral. djy4hd2ue ,kgvrrux.9 yft*9 l* bib*/- vur 5 They are placed near each other on an insulated table. Which statement best describes the elect9ge ui *yy9ub2dr rt/k*5d4.v* x-h vjbflr u,rostatic force between them?

  Two charged objects attract each other with a certain cj) : zatb.e(. pmfpg/force. If the charges on both objects are doubled with no change in separation, thmzae (b/pt .):cj gf.pe force between them

  Two charges are separated by a distance d and exert mutual attractive z0k ygc4fwn3n3 v3yj0forces of F on each othy33nv nygk4cjf0w30 zer. 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 force F. What happens to the o 8 2nznw(mhm8force 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 f mn(m8hn2w oz8orce is now equal to

  An electron and a proton are separated by a distance of 1.0 t9 iwv; 9d1qlzm. What happens to the magnitude of the force on the proton if a secotlq; 99i1zwvd nd electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to6t/qe /*k0qr rkzzxk/ the magnitude of the force on the first electron r0z/ x/ 6rzktkek/q*qif a second electron is placed next to the proton?

  An electron and a proton are separated by a distance ogd7cj66a-9 lo4l wro if 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer t76ri o96wc4-d ojagl lo the proton?

  A point charge of +Q is placed at the centerj. tuabn, 5a1s 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 positivn,at5. jsa1u be 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 plac(lx)rjr: 665rmcm.z/ sjs xgq ed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle'mj.rj/6sxgc r( rl:5)x zsm6qs 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 e9ybdksn.7iel 8k;u mi) *w y6-0k6iwkrt.k k vector?

  At twice the distance from a point charge, the strength of the ele/qlm*+ha /hua ctric field

  Is it possible to have a zero electric field value between a negative a.; hrf(qds d3and positive charge along the line joining thf;3ds. h(a qdre two charges?

  Is it possible to have a zero elek 8zxxzcen /a fa9y17-e-b d0wctric field value between two positive charges along the line joie- 8x7-nbyd0e xzc/z1kfa9aw ning the two charges?

  Electric field lines near psitive point chargeso rk c+b*knzi6a8(7ut

  The electric field sho ko54d1bv x:rdwn

  Can electric field lines intersect in f nadi4f5i-:yadk j cqi.6m,m9ree space?

  A solid block of metal in electrostatic equilibrium is plac/wiiuk 3j+tyjfnoiq ,,s7 vp+/g p; l0ed in a uniform electric field. Give a statement ivi3+w// u0pygji+kptl s, n,; o7qfjconcerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of np jdl28engj cb, 2gb -as:*;kequal diameters are each given the same charge, the electric field (E) midway-2ne 8 cpgbl2g:*sd ,jbjn;ak between the center and the surface is

  A cubic block of aluminum dt57pk4bxfsgi54s2 y+vb 5t ag6z )lqrests on a wooden table in a region where a uniform electric field is directed straight upward.)5vsfxt k qa2 z5 6s4 5idgbg+y4p7ltb What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic eq.a 1vqhp- qf :3,klz rsvl*o(ouilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grbqk nzj(o/o(1ounded. As compared to the case without the hollow sphere, the elzb1o(n /j okq(ectric field at a point directly above the hollow sphere has

State three properties of conductors in static equ+dnc8 g4f.gszilibrium.

State Gauss's law.

  The charge carried by one elect j6jhpa;)62y39o mnrw i8,2 wsvprtybron 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 v,bg-r bgmi*8fnh q- ,/x+a jjcharge of +2.00 mC. How many more protons than electrons does tv+n f ha q- g-i*jbj,g/br,x8mhis piece of plastic have?

  What is the charge on 1 kg ofq)ub0c,h,v 6c ym2b4)s mxb gx protons?

  An atomic nucleus has a charge of q,5t)jmn rj68azg1t liscjd x 8).vr2ti)y0n$+40e$. 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, r8yk op *s ow.5g3icxfzg-d2 wkqk/141tjw8rvespectively. What is the magnitude of8toqp .8w* ogfi/5k r z -cvk11wswdx4g23kjy the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between thsg**id dnz:v j-byw*j): mf2dem is 1.0 N. What is the magnitude of the second -:i zw *:2mdb)yv*jfsddgjn* charge?

  Two 1.0-C charges have a force between them of 1.0 N. drtijn2i :u3pe,bmf7x4 3s z:How far apart are they?

  The force between a .yl;xb/ o-g uw$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initial7 l0gz tf (zdgz:-ua/lly 2.0 cm apart, experience a 1.0-N force. If they are moved to a -uzzla:z(gtg0/f ld7new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on thzza t k4s719hle 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 st9a7z4h1 kzl on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placeg7j0(2jvv e;ib0kvy7v e4 navd at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. What arevv 7n ;ibayje4kv0v7j0 v 2g(e the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the follojmm w8h- 8u*xiwing 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 mag ih-8 8mwjm*uxnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the centan(d79g 3g ixpv+yk7aer 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 the center. What is the magnitude of the force that acts on the center charge if a third charge of v np3dg9kaix +(g7a7 y-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); d. 5aj49pp)zzz u 0prvQ3 = 5.0 nC is at (0, 0). What is the magnit ppv.du9rp) zz4jza50ude 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); Q3 = 5.0 nC i t)1hrajuuy5 hv uu9rtm5yo;-6h0+ops at (0, 0). What is the direction of the net force on the 5.0;+ y6 h)jhrt tyahpmovr 5o-u5u1 0uu9 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equih/ y(-uto w8lrlateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges? 8r-htl/yu w(o

  Consider point charges of +Q and +4Q, whp6nu6ttsa/ ;6 3bhkhk5td 9axich are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to pt 966tna3hxhk6/adk;sb5 put lace 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 +9.0sea) -v*t q(ows,su9v-C charge is at x = 4.0 m. Where on the x-aau) vwt*qs,(-es9 vosxis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -c4o;v-s,qut:bwf-b4 hz hkb 6q is placed at x = 2a. Where can a third positive charge +q be placed so that the force 4uf-,z6hs4vhbck o-;b q t:bw on it is zero?

  A copper penny has a mass of 3.0 g. 8/il7d2tww) g9 i imunA 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 4s2x p gkul5h2the attraction of a fixed proton some distance above it. How far above the electron is the propxlh 22uk 54sgton?

  Two 0.20-g metal spheres a)1a* 6uuwz:c .rsc voare hung from a common point by nonconducting threads which are 30 cm long. Both are given identical c6v: .zosr a1acu*wu)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 if ra2anip a1/ 4xpxsf)9kc l1 +57szqm(cvo1 ws the magnitude of the electric field at a dispf1rp+9moi1skav lx/1nz5ws (a 4 xfcqca7)2tance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distal31e2 kg/c+oe, n ,smr5kr as-sp5xkcnce of 1.50 m from a 50.0-nC ae2mn1sg-xpl c,,kkcosr+r5s3e5k /charge?

  A 5.0-C charge is 10 m from a small test charge. What is the mag0pikev7qp 8 6ynitude of the electric field at the location of the test cha py6vq08 e7kiprge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of)yzce5w)z5-5 f.lygtye+m t d5uylm 4 the electric fit4g555m+e e -cyywz))ydlm yl5 tf.uzeld?

  A 5.0-C charge is 10 m from a small test charge. What is the magn0 ;m(*bhkqu:r8 eg+9(fpwxs jh 6ttxaitude of the force experietx 90(fst h8*(hmawr jx+upgkb;:e6qnced 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 separateue/aa ( hq ;:f .pmac4rx/jvo-d by a distance of 4.0 m. What is the electric field at a point midwa.a4 q(f:mj- ah o//u;vcreaxpy between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC cz 0/ m.cjd0wbnharge is placed at the 50 cm mark. What is the electric field nc .m0wdj zb0/at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a mete7aa* qckj as))r stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line join 7*aja)k csa)qing the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placede s96o yv q. p(p0*i,1gzclgtccbmr,+ at x = 0 and x = 0.20 m. Whayive9cgtgz (opc s,6b+l.m*0r qp ,1ct is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges ajyq. j l;:wxp0jx 7pw9re at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fieldwj7y.q ;: xp9 lwjxp0j at the center of the square.

  Consider a square which is 1.0 m on a side*-eq vfir j8-q. Charges are placed at the corners of the square as fe iq8-r-v*jf qollows: +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 electric field at the square's center?

  A force of 10 N acts on a charge ofwdmi1fu8l51)zz cr /ojb2x )a 5.0 mC when it is placed in a uniform electric field. What is the magn1 miw oz)1azr)5u2/xb jdlf 8citude of this electric field?

  A particle with a chargebic ,ykmqsb aa7mg./+4fh)6 (u3yfd p 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 qnj 4gd0p7n(f g is placed in an electric field of 6000 N/C pointing downward. What charge must be plad7(0 pjnnqf4g ced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The baabf g11v8u. /+xoxjm jll is placed inside a uniform electric field, and is suspended against the force of gram u1g+j/1f. xbxa8ojvvity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 a;b7u*i vnip2mC. What is the magnitude ovnii *ap2 b;u7f the electric 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 electr (r vhg4yg ob0n(ay1k8f-xaoi49 5jqqic field 6.0 cm from the center of the sphere?9 a b(h4 x5o0ao8ji-kqq1n4(ygvy g fr