State the law of conbs,a/ wy1yod5 servation of electric charge.

  Is it possible for twohgody2 ku09d4 negative charges to attract each other?

  Is it possible for a positive and a negative chrg7)ukdawvkj 71c7h 4arge to attract each other?

  A glass rod is rubbed with a piece of silk. During t xv+(mg9xp n/zhe process the glass rod acquires a positive xpvx+ g (z9n/mcharge and the silk

  A proton carries a

  The model of the atom showzdt8+2wfy v )ys a

  A neutral atom alwayst+w t7p6z6v tq has

  An atom has more electrons thadvw6hwh; 6,yc l x uwyho2f-85n protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are referrq 9u.6 udu7vdjbm-bl. ed t6vuq7d.dbu j.lmb- 9uo as

  Materials in which the electrons are bound very wq p*,jhkhh78 (di*paloosely to the nuclei and can move about freely within the material are referred to kiw7,p h jhq(p*h*d 8aas

  A negatively charged rod is brought near o1,znsx8x 3r atrx u71eh ,dw)nne end of an uncharged metal bar. The end of the metal bar farthest from the charged rod w s7 r) az3xterx,w1xdu,1n8 hnill be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They 2fm o msjjr8+p ;cm(wfv u89+vare placed near each other on cm+9vmpf s (f +jvwrj;2o8u8 man 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 electroscope positjv t 5b8+dz 4g8kyag0nively?

  An originally neutral electroscope is briefly touched with a posizhtfo6:8az 2req 2:eqswts 5jm+i//ctively charged glass rodm a2zz /qc: 52shs/frttee:ji 8o+6w q. The electroscope

  An originally neutral elooru kf ,x ontxcd/+9cqon3)f; 10f,n ectroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is c)o k,fu0ron ;n 1fo,xtn3/xco +qf9d removed, the electroscope

  A positive object touches a neutral etan0,sl,5cja4b .vdglectroscope, and the leaves separate. Then a negative object is brou, .sdc5 jt,4lab0ng avght near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral my hy guy; 7j2lnzon)92etallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along ln7)92nyy;uj g yhzo2the 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 o:o9 gad :q 9(mvi; vlmswtct0/f the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fi z- jgx08*(9/dx 1dvploeplwr awn)9wrst charge is larger in magnitude than the sw-9ewvg nl/a dp* z0w89xdxr(p oj )l1econd charge.

  Sphere A carries a net charge and sphere B is neu fqqx; )bmn7+wlj)pp 9j:av y(tral. They are placed near each other on an insulated table. Whp wlxy; n(7j+)ap9):q q mjfvbich statement best describes the electrostatic force between them?

  Two charged objects attract each othe8z lhbd yw)(/hfh6pdbf ,00qvr with a certain force. If the charges on both objects are doubled with fhh0y,fph 6zdd/qb bw08)l v(no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcesxx gsve s tg+8ipy59 a-m ny7n3h2c2m.qtu q7: of F on each other. If the chqcyx v uy pa egi3m-gshs2tn798qt x 2:5mn.+7arges 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 toi4ifyen-r/gi d*. es. the force bef. .s /- 4irgdiein*eytween 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 equal to

  An electron and a proton are separated by a distance of 1.0 mm.a:ruc6 e3l9xv ngh2. What happens to the magnitude of the force on the proton if a second electron is placed next to the hrn u9.6 :2veml3agcxfirst electron?

  An electron and a proton are sepay2,kwljf /nq7 rated by a distance of 1.0 m. What happens to the magnitude of the force on the ,yk l j7wqn2f/first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1 w-8k*rzb+)raz mivie5tv 1 6y.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the proton?z5tv 8ami1r+yre*vb6iw) kz-

  A point charge of +Q is placed 8f+ wdmc1s7g.*s* 19ie wzbeqbf tma2 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 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 .**8 wc1wffb me9t2 7gssedzb1im aq+the center of the square?

  A point charge of +Q is placed at the centroid olw+vm nco7+r+ f an equilateral triangle. When a second charge of +cw rn7lm+ +o+vQ 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 ypfui;l ;u4d.not a vector?

  At twice the distance from a point ck6sc/wd yru,c 40b(u vharge, the strength of the electric field

  Is it possible to have a zero el 4r1i,ryfkl:n2su+kfqk o27d ectric field value between a negative and positive charge along the line josnlrk2ku12rkfdq4, 7i+ o: fy ining the two charges?

  Is it possible to have a zero elecw; ygv/g2q 5rwtric field value between two positive charges algvw 2w;/ 5yqrgong the line joining the two charges?

  Electric field lines near psitive zgzf g g)((zl2 :uvcg4point charges

  The electric field sh2l)tp; .ctaoe own

  Can electric field lines inteavgnk+nf*d 9/wgc a0v9r,i *1cn :aiyrsect in free space?

  A solid block of metal in electrostatic e4 -2u8c,8xaryubywb qquilibrium is placed in a uniform electric field. Give a ya-w q48,ucuxrbby28statement concerning the electric field in the block's interior.

  If a solid metal sphere n4 du*bqjp8* wand a hollow metal sphere of equal diameters are each give wnd q8p4*u*jbn 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 in a region where a unium .(t;pexpg *form electric field is directed straight upward. What can be said c epg tm(;xu.*poncerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electriwlh2b:/6on ;t qv(s1eukgjd* c charge

  A positive point charge is enclosed in a hollow ;:, j.ynh - n4z( gav/qjcsjotmetallic sphere that is grounded. As compared to the case wi:on stcja;( h -jj/qg.vn,z y4thout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of c37:r,zsohmn2 *n bffionductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron ,pwzdrow o2 3*fzr yzs v+1h))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. 2gftd q u5-fb:)jhkd :How many more protons than electrons does this k-5qffgbh ) :dtu d:2jpiece of plastic have?

  What is the charge on 1 n (d-yitj5r9*kfg 8mb kg of protons?

  An atomic nucleus has a ch.t qf;sldn6(ne:* nczarge 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 90fn tw5hs bqy6 avc0,jv6j(eof 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between theje66sfwchbt qynvv0,j a 0(59 m?

  A 1.0-C charge is 15 p(3 o5tawpk8e2qr iwx:-5rj gm from a second charge, and the force between them is 1.0 N. What is the magnitude -wi p a:re(krg8ojp35t52qw xof the second charge?

  Two 1.0-C charges have a force between tf e:ntgxd/ 1syl0(1uwhem of 1.0 N. How far apart are they?

  The force between a igkq+:bt xn *;8i padu77g/rx$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apar)-e6tmdl/owlcp wl. dvh i45 *t, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the ) i*lw /cmde owplv5t4-d.6hlelectric force between them?

  Three identical point charges of 2.0 mC are placed on the k wnij,59/g dhx-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 n,hg/5j w9 ikdand direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on v t19lm;dx/u i:ax:a wtr0e z9the x-axis. A charge 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 magnitude and direction of the electrostatic force which actse;tr 0m1iax d/zu:lax9: w9t v on the charge at the origin?

  Three point charges are located at the follk4x/go+wzbzil +73 feowing 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 o 3gw7kizxlbfe4+z/+ is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, r-y(k8*wglkh y 4q+yv)o x gx.t2h:wfand 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 centehv+y8w:klhw f .xgg)xy*(24o ykt rq-r 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); Q3 = 5.0 nC is qiy fju61gb2p 2azik 1- bjcs0k:t83aat (0, 0). What is the magnit ci f p20sbqa813a-yij2k 1gz :6ktujbude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.x6bt5hds -u8z *)ccrzm 0wkd530 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is t bs0z 5krh)5dtwdzm x*6u-8 cche direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placejdt+7jvl3laha14o;1bd1 ,fjweemb :d at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force f,71l41bj;l e:o1dmj3dtb vj ewa+ahwhich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are el ;o8qk vj-x);1lckzseparated by 3.0 m. At what point, on a line between the two charges, would it be possible to place;;1-x jql)vo ke lkzc8 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 * v+if,sd4 hrycql :z9charge is at x = 4.0 m. Where on the x-axis can a third chac, rsd49 : +yqzhvlf*irge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed uojd ,d du 4/t8to2yw:at x = 2a. Where can a third positive charge +q be placed so that the force on it is 2ttw,d:4/do jud8uoyzero?

  A copper penny has a mass of 3.:aa-r -b9dtfc46uo4s8xak p d0 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 .wa 3 y0ldtjrh.-7mp;epc7ifkw ig,. fixed proton some distance above it. How far above .a tej,3plg.fiww;0h pik.d7 m7c -yr the electron is the proton?

  Two 0.20-g metal sphereab3 (ofi4-k qk k*1v+a:nll ins are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the elelv of b aqn k(i*3ak+:-4k1inlctrostatic 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 magnb d3:akoc )nck.eahyf.w 1p61itude of the electric field at a distance of 1.0 m from the 1afbdceh woky p. n1 :6.akc)3nucleus?

  What are the magnitude ar 6y9ro--ml lznd direction of the electric field at a distance of 1.50 m fm rozlr6y-l9- rom a 50.0-nC charge?

  A 5.0-C charge is 10 m 7nra( n, eut(+bpm22 n7kriac from a small test charge. What is the magnitude of the electric field at the location of the tesec77n2n+r t ,nmur aka(bp2i (t charge?

  A 5.0-C charge is 10 m from a small test charge. What i9,95;a rowts8 eo; b c9*yhdgm7msux es the direction of the electr, ex rss9 c9 58hbo emowm97g;t*du;yaic field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ol q,2vl1k wb:+jsvz / +nj6xmkw,v0so f the force experienced by a 1.0 nC 2no 06ls wxjlm+kvjq,v ,sv1w+b:/kzcharge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance ofpkwn ck;s/ g5s0wyh4( 4.0 m. What is the electric field at a point midway h wy(n5kpgs 0sw4c/k; between the two charges?

  A 5.0-mC charge is placed at the 0 ceoggy(f .m9hu1cp , ,gm mark of a meter stick and a -4.0 mC charge is place9go. c,g u,my1(fhepgd at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stickc-4,h ,;tn+cpysuz wf4u uc .u and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zerou4ucc ,-+ytnus uf. ch,wp;4z?

  Two point charges of +3.0 mC and -7.0 mC are placed at z w(se-zw/lg d ;).+(tmevqwp x = 0 and x = 0.20 m. What -;w.dqzm+z)l w/sept( wgve( is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. 0. u a/smauoh.qhcp s65q8nrm.b 7b.j The last corner is occupied by a -3.cq o.m/a..uusnh6 5srp h8 ba7 0.bqmj0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Chargesu/ dsg:8ep :hrj wah:, 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); -3.0h/ , ujd:: seh8pga:wr 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 placed in a uniform eleod;00d9 vf+cf;y rp rkctric field. What is the magnivckdfypro 09+f ;dr0; tude of this electric field?

  A particle with a charge of 4.0 mC has a mass of fi.f6j )zb yy/$5.0 \times 10^{-3} \; kg$. 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 electric field of 6000 N/Cv)-f,zk+oswaab*g ucz2 mer9 *t/8pv pointing downcmgb k/-a,oe pf *v8s9z*t awz2) vr+uward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The c8x+ .x3mdar b7(tis;j( klw kball is placed inside a uniform electric field, and is +lw7xcdsm jkt (;krixb( .a 83suspended 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 +2.0 mC.s(5 k33lpcu xq fulmz1s7y*n 8pmo +-m What is the magnitude of the electric field 5.0 cm from the sphere's surfacepmz-(p sqs13 y7k3u+ xfm*8lmnlo 5u c?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC.ggyvn4dix2 2:k9gykl ( +5dgv What is the electric(xg4kdy29 5 g+vd2iggvkn:yl field 6.0 cm from the center of the sphere?