State the law of conservation of electric charwwl)0vw71 pxt :4wa fgge.

  Is it possible for two negative charges to afulu,(baa + z,ttract each other?

  Is it possible for a positive and j:50.lmequd ma negative charge to attract each other?

  A glass rod is rubbed with a piece of silk.kxx(abt j y5)9 During the process the glass rod acquires a positive9xy5 abx)j (kt charge and the silk

  A proton carries a

  The model of the atom shows aj 3u6cqw*;dql

  A neutral atom always ha iiyn8 uj;rf5)y9 7uivs

  An atom has more electrons than ei-xedi6 9;m jr;vk 0vprotons. The atom is

  Materials in which the e.dp r.qgm3god0 4h aqcos3 3)ilectrons are bound very tightly to the nuclei are referred .oq4cs drho)3dp3gm 3 0a.iqgto as

  Materials in which the elect11 f9 l0tv9 ite;t2lb gopb.horons are bound very loosely to the nuclei and can move avbg 2h1oo lpfti; ett99l 10.bbout freely within the material are referred to as

  A negatively charged rod is mq0yp*g:x5. qs zlbpc iv37oas)w-,t brought near one end of an uncharged metal bar. The end of the metal bar fap5vt*l cb-q:ps.s,z wo )30yigm q7x arthest from the charged rod will be charged

  Sphere A carries a net positive (:f n4m+bk fwbcharge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire fbw bm:f n(k4+that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscopa;eu nkvs 1r3 xj:2tfi1b41gye positively?

  An originally neutral electroscn4ddf ctwx,ka 7+yx-j 6zr 9;:zp;gbgope is briefly touched with a positively charged glass rod. Txtya4zpd, kz ;j;gg97x-b:fnc6w+rd he electroscope

  An originally neutral electrosndda;- ckt47rcqz)n;cope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the ekr)d a;q4z-nctn c7;d lectroscope

  A positive object touches a neutral electroscope, and (0nhj 0inl r3bthe leaves separate. Then a negative object is brought near the en ij(30lrh0bn lectroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A hv. ):r vk8v0jx;8 iwknpwo+tneutral metallic ball rxit wojvhvv;rk 88. k)+0wn:polls 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, 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 Coulo/p j(yve6jg/eot z29 xmb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thp**rh2. y1ko425dxqu9 sj aoy drz si)vs f+4je first charge is larger inrq 9fy yjs2uo2rvpd*kdox zis4 )h+ *.14a5s j magnitude than the second charge.

  Sphere A carries a net charge and ssd g 0 r60tit*:tm;m5p zc .2*cyambmlphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betwemmrdg;0y*c.pzt2: cm5t i* sl m0b6aten them?

  Two charged objects attract each other 9c8rql8o:es ki4ptq s +zrcs6o .z 6o9with a certain force. If the charges on both z9sozs6 o rq.s8 8lqrico9pkc4:+t6eobjects are doubled with no change in separation, the force between them

  Two charges are separated by a distancea7 qq3ursx/s. d and exert mutual attractive forces of F on each other. If the charges are separated by a distance a/qus. 7q3srxof d/3, what are the new mutual forces?

  Two charged objects attract each othe0 9,tffyryv . unav2u)r 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 red vyr0nuv 2,tyf a)9f.uuced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a 3 pio,a*sjm9 adistance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electron?3*9aai s ojm,p

  An electron and a proton are separated by a du2 j/l5epqn 4pistance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placlu2 p5/4qj neped next to the proton?

  An electron and a proton are separated by a distance of 1.0 x ,rh*8u xus+0oaae 3 ,:fsffhm. What happens to the size of the force on the proton if the electron is moved 0.50 m ffu3ha,+ou0s * 8s xx,:hrefacloser to the proton?

  A point charge of +Q is placed at the center of a squ/-km* zlvd*+lw3:saqmv m0z s are. 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 tkl adv +3/l* zmzss-w: *qm0vmhree 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 asapyr*zm-tg 2f e)w:+ t the centroid of an equilateral triangle. When a second c*pts :y fmg)ewrz2 a+-harge 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 followin.hh*mk,,:2rdftj 9 q uuicbk6; j .wmpg is not a vector?

  At twice the distance fr (.; raar7o-ot7k vntbom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negx lfpx-ps52o: yc7xyc s,a(f+ative and positive pc syf7+2xfyxs a(x o-l5, cp:charge along the line joining the two charges?

  Is it possible to hahkh bak cdke7g7e6)c p;5 4n5ave a zero electric field value between two positive charges along the line joining the two charg 57)cpbh;47ck5 ka 6dn egekhaes?

  Electric field lines near psitive poinec teo3/us t4pe 8*96g,xqgb,(mpcjzt charges

  The electric field shown+ grs m0ctk 8 zdyehk81(a:(ph

  Can electric field lines intersx 9snxi r5d46rect in free space?

  A solid block of metal in electrostatic equilqbcim*h-ff68e+d rb br( q*d +ibrium is placed in a uniform electri-drbcm qqr d(8e6f b++*fib *hc field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eacva7;2 fcex qx87k ,xodh given the same charge, the electric fof2 exq8dxc7vkax , ;7ield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform 2h-j,w-v jzgmzupd-uhhk5(cf8 )/76 vxdvr melectric field is directed straight upward. What can be said concerning the charge on the blockvud v7)r/xj-cwf-z hj5kphvgm (mu,-682z hd 's top surface?

  If a conductor is in electrostatic equilibrium near an eo.me3wn.l n;m ,h-v 6uiwnav6lectric charge

  A positive point charge is enclosed in a hollow metallic sphere that is ground5u bx,0.0b+oqesw t9qefr+mbed. As compared to the case without the hollow sphere, the electric field at a pointq m+o+bw0b euxf5 9q., bter0s directly above the hollow sphere has

State three properties of conducoe ua))pi02l rrhgc +5p2;q fltors in static equilibrium.

State Gauss's law.

  The charge carried by one electsp+je8xu m3.zron 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 kp9,yv4ezhck;u /5o x+2.00 mC. How many more protons than electrons does thoc4 xp ;hkz/, 9ykuve5is piece of plastic have?

  What is the charge on 1 kg oftwfa5v6a8vy i/ aek9v0ec7. zz4: csifb w) q5 protons?

  An atomic nucleus has a charge 71 tnuef,ev am an7,+kof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm,l l42rp-ptdecd 0li. , tgo4rn5:cw (d have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between themwc 2 orde5trln :cppl 4ldd,4(tg.i0- ?

  A 1.0-C charge is 15 m from a second charge, and the force between tq znc; 1j5vinkc7.h, whem is 1.0 N. vjhin,wcc z;7.q5nk 1 What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N4 df b*./bggka:fv)be. How far apart are they?

  The force between a i*j9h/ u:4yzotm*h ffvmmt jiz0u0fy:q o(88$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm b55xu6q(ooewapart, experience a 1.0-N force. If they are moved to a new separation of 8.0b (weu5ox5 6oq cm, what is the electric force between them?

  Three identical point charges oo-- mlh ux z*iy3uw.xfbp6 e14f 2.0 mC are placed 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 dy1 6hl eux-*boz- mu.3f4xpiwirection of the electrostatic force which acts on the charge at the origin?

  Three point charges are eoa oq(mk5f ;)placed on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to thq (;m)eo5 ofake 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 ar7x.xrm /r9 uagm+(+-slk tf qv s87pqre located 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 the 3.00-mC cha 97+vms8rqslqp+(kxmtx -ru / f7 g.rarge?

  A point charge of +Q is placed at the center of a square, and a secondxc y0cdb37;ekb39ugjmhms6 na+3 :y b point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 Nn bx 3+bg ch0sk6:udcj93by3m7m; aye 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 -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, 0pyo k.03gej s2.10 m); Q3 = 5.0 nC is at (0,2.0j ko3 gysep 0). What is the magnitude 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 qp0+u/ xfv d getdv1rma 1)ht6qm4;5qm); Q3 = 5.0 nC is at (0, 0). What tmr0 /+1ga)qd hp1vx4mqefv6qt;d5 uis the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed a b6(2,fsnz4ua mvqp9lt the vertices of an equilateral triangle which measures 30 cm on a side. Wh2sn fb6aum4l z9,(pvqat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q anc y,gft(fg5sk 8w.j0yd +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be po(t j gwks8ff5.c yg,0yssible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the orib :c-c (ekextiu8 h*xw49ox 9da5h6ifgin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third w:k cu4d9hci txeax-6eb5 x*( 98 fohicharge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at z7h lc21j/ e vasitn/2x = 2a. Where can a third positive charge +q be placed so that the force on it2 jzta7h/e 2i1l vc/sn is zero?

  A copper penny has a nk-p(zc-s rq62ck: ;xw +ydv emass 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 8q i/ lx646iml+w5ma )uw(euef cjg3hof gravity by the attraction of a fixed proton some diif3a 8jlu6u m/+ 6meqeh lw xi45(cgw)stance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point bcnuks t(+k5/cidh3 a(y nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forcesu5(c/a(tc s idnhkk3+ 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. Whatwuh-+9snr 4i 8trmd 3m is the magnitude of the electric field at a d+mni sr 4w389turh-m distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric foys3o 5pt2 w0sield at a distance of 1.50 m from a 500sw25s opt3yo.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of ttg )g9 ivj 1d9njm6 jf(qz.p5khe electric field at thkg6j1 v5 t.jm(inp q9g9fdz j)e location of the test charge?

  A 5.0-C charge is 10 m from a small test cha thn ax94oj7:vrge. What is the direction of the electric fx7:v hj 9ao4ntield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of t h*2xen8ro)1( es zr8h rwacud-cp;3ahe force experienced by a 1.0 nC charge plwx(8 crha3s 8h uz)de-pa; cr*1nro2 eaced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separatjxqf + nsa*fvsqd4 *3vvex49 :ed by a distance of fv vfxv+s sa4x4*qd9 q:n *3ej4.0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm2fl,hbb* za* qy-auq. mark of a meter stick and a -4.0 mC charge is placed at the 50 cm maqabh zqafl* u, *y2.b-rk. 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 stick and a -4.0 mC 3y7om*k 34he n+ vbrrscharge is placed at the 50 cm mark. Atev*rk+r 4bhs3mno3y 7 what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 1xt r0dyo4yj e+: xmh 1tle4xt5.iqn-and x = 0.20 m. What is the magnitude of the electric field at the point midway bexn1 tehq1+ yd:-exi4x5 t0 lt4jm.oyr tween them?

  Three 3.0 mC charges are at the three corners of a squaziso mn -gua -t )nhlio1q+,tc+u2* v/re of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center ohq+osgt u , c1z i/tvi)loa-+*nnu-m2f the square.

  Consider a square which is 1.0 m on a sidrf5*5dn dsy9.dz en (ae. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1 9nz *df(s55dr.y ande, 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 charg *9in8+vh xt90v:q uct-.gl d)mowhqg e of 5.0 mC when it is placed in a uniform electric field. What is the magnitude o.*m) 9hti-xgl v gc8 qu+:t wdh0vn9oqf this electric field?

  A particle with a charge of 4.0 mC has a mass of 6xa1 pl;e5u ll$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed2 dwns;7o :fsnc);g cx in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball fnfgns2c: scx o; ;)d7wor it to be suspended?

  A foam ball of mass 0.zgjr e5mghp,l2wq *t:2zb(u4 150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is su* zr emtp(5w4jgu:l, gq2bhz2spended 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. What is the magnitw:rzh - thcbv3o ldj-m9p7) gny7d+l3 4k ja(cude of the electricbdjlady7j-4l -om :+( wc ch)n7g9 rkzt hv33p field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3i:ra s zs5n07u.0 mC. What is the electric field 6.0 cm from the center ofi57nss :razu 0 the sphere?