State the law of conservation of electric ch95h 38czn-ns xk mu3at*f.fc rarge.

  Is it possible for two negative charges to attract eac6me8 rsdxx4-z h other?

  Is it possible for a pod y05jyxcgki6 8:*ksrtea +;3n* crw ssitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silkpsjrja:gae(8)2jto 2 6srw2 u. During the process the glass rod acquires a posit)pwe (sru2j8 sja6g tj:or2a2ive charge and the silk

  A proton carries a

  The model of the atom shows a 7ib) ;g lsrd; btpq+rm6e1wd/

  A neutral atom always q ylth*i 6*3tdhas

  An atom has more elect fv e/0ysi+q5wrons than protons. The atom is

  Materials in which the electrons are bound o9ij9gkh )s.u; dys*o very tightly to the nuclei are referred to y.*9s9 dg)ioojkhsu; as

  Materials in which the electrons are bound ve 2/ vp4i.)a9aold kfaqry loosely to the nuclei and can move about freely within the material are refeiv4/lq.92dako ) fp aarred to as

  A negatively charged rod is brought near one end of an uncharged 0w; 4-:7/ eiv dbu8 vbqtecmyhmetal bar. The end of the metal bar vueyq 8/c ht evb-4i0:md w;b7farthest from the charged rod will be charged

  Sphere A carries a net positive charb .ebzg7 4t.rrge, and sphere B is neutral. They are placed near each other on an insulated table. Sp g.rbbe74rt.z here B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscovg4qoj4j :z8/iz,c deg7lzm-pe positively?

  An originally neutral electroscope is;sbl l6kqp, e:cun0ntml70 .3g i b4ss briefly touched with a positively charged glass rod. Ths bc lsb6n.0,n0lmql ptge 74sk:iu ;3e electroscope

  An originally neutral electroscope is grounded briefly while a positrcjdvt,o11 * o u,l+dwively charged glass rod is held ned1*j cdo,o w,l1tvru+ ar it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate.w,-i af4,xu4g5 f ijnx .6rrkl Then a negative object is brought near the electroscope, but does not touch it. What hrgk fu x5.4x,-al4i6j,rwfn iappens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral mvyyj pra, ; 9yev60o3setallic ball rolls straight toward th96jyye, ry v3s;p0vaoe 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 06uj ui6hap.nCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sepazvr f1*m 1ww0 dacz2)hrated by a distance d. The first charge is larger in magnitude than thz rcmv1 *hwa0d )w21fze second charge.

  Sphere A carries a net charge and sphere B is neutral. r4xi oo*lye(0rx r6q4y:wf e1nif/; t They are placed near each other on an insulated ir o6yyl :;r1fin4t(wx/oe x4r*fe 0 qtable. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other kr fis6*kz c cp0j. ;2 0dog;yr4ybrd0with a certain force. If the charges on both objects are doubled with no change in separation, the force betweenc40p;gdkf ryr0r 0ok dc6;2 zy .b*jsi them

  Two charges are separated by a distance dn8xmqt 47oj2mcqcz i8uao 5maf k2324 and exert mutual attractive forces of F on each ot 42mfn2a8235mum 47kcocxat oj8 ziqqher. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects at0* y-q tro)hca elh)o4tract each other with a force F. What happens to the force between them if one charge is do arqe0lc )o-yh4oht*) ubled, 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 sepi6w4xia7/h l/vmc f-jn1qr*a4v:rhyarated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is pl4mjr* yac-6:1 aiwn /i47rvq vlxhh/faced next to the first electron?

  An electron and a proton are separated by a do:gixr(vc7h- bd8z.t4f yy k+q (y6xcistance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to t ho( (yx-yvc: 7byqdtxc4kr8f iz6.+ ghe proton?

  An electron and a proton are separated by a distance of 1.0 m. pa,f,)cdam1 qsa. j) b What happens to the size of the force on the prot.f dqjaaa ,,)mcbsp 1)on if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the centq k.tkr)dv j /f8)oov*er of a square. When a second point charge of -Q is placed at one of the square's corners, it kd)8 f*/k. voq troj)vis 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 the center of the square?

  A point charge of +Q is placed at the6 tf1mc jwp)k:tp+p)f centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices,j1t) c6+p fpfptm:w)k 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 not6, rgsxqtx *.k a vector?

  At twice the distance from a poinp lydj d,yz+.6*a :p6nrpele 9t charge, the strength of the electric field

  Is it possible to have a zero electric field value between a neghbetd8 g 0ihgv0y+*,tative and positive charge *ghigt,bye0 0+ td8hv along the line joining the two charges?

  Is it possible to have a zero electric fiel0pyybwisr;.-ccm y6n 5 w4i1j d value between two positive charges along the line joining the two charges5;syi bpry iwwj.0n-m4y 61cc?

  Electric field lines near psitive point cl em6t(oy14vm+6dwt tharges

  The electric field shown (h*fj .cg(1naeouo 1j

  Can electric field lines intersect is)xfs tw .m)dz/ ss *8c5 vt).unvh4psn free space?

  A solid block of metal in ele k 6/9ar6j,yix0wtaa9 r mgo:lctrostatic equilibrium is placed in a uniform electric field. Give a statement99,oa6 0m/: wyajaxti lr6g kr concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eaq2kccok 2/opbol5 3*c ch given the same charge, the electric field (E) midway between the centebq*kc2oc3o52kp/ol c r and the surface is

  A cubic block of aluminum rests on a wooden table in muh /bnjj4 -,ua region where a uniform electric field is directed straight upward. What can be said concernh bm,4nj-/ juuing the charge on the block's top surface?

  If a conductor is in electrostatic equilibr1b ttv4dw;,knium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that i*+2a0 gqoxu zd0qx- mds grounded. As compared to the case mdqaxx00-g2od+qu * zwithout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibr+7gi1 2ufku 0 ock1 91qghspfhium.

State Gauss's law.

  The charge carried by 0 gpkqj/f:b6n 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 m w9. iiealxqi0f .+e)iany more protons than electrons does thiiaiq.eilix9e +w .0f )s piece of plastic have?

  What is the charge on 1 kg of protidp pg ).a)(hckig *(bons?

  An atomic nucleus has a cenkv f yx56ay87;6 72pa-swm3 iesjmrharge 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 fsx7d6a:zb. nmf7. mq.ej0q 0z6x s ol*dxa0omC, resq.:76qmf7xfeo oxb s.0 0l szn. d0axza mj6*dpectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from89h 0qwsmidlvgr9(c+9ly3h i a second charge, and the force between them is 1.0 N. What is the mamy+9i9 c(3gl08rwvl dq 9hsihgnitude of the second charge?

  Two 1.0-C charges have a force between7.liz.4 usk 3zyur*cs them of 1.0 N. How far apart are they?

  The force between a xeub 7x/nwr (.pk2ni)$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force. If eng, rj)uv4hoxl +.box6ko9rp58 kf( 3u)q ww they are moved to ax( .h8lge5 4,bpruo6jqxn)wro + )kvuof3 wk9 new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first(sdhqvof+t9xw.* nrc u*a.6 w 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 magnacu .6qwwh (v9* s+dnxor* .tfitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A ce+. tn;,kxrqf-js, oi harge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4 fn,k;j.xi-es qtor+,.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 loc;osp)w6; lvl eated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 m ol;vs)p wl;6eC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the hu) m3h6l s1ibcenter 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 acthhmi l)13b s6us 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, 0.10 m); Q3 = ha,ai0+ /uq i 3tr,dxbl a5bu65.0 nC is at (0,0u,lit a/5xq,ib6rdba 3+ a uh 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 m); Q3 = 5.0 nC is at ,k m c92xxntybb+yimdapz0r l+-w36 2 (0, 0). What is the direction c narb+xtzxdb,k p 2y 9-l30i6mwmy2+ of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC q;+ic f*l.z fiare placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostat*f.z+ciqlf i; ic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q,y+8rnchvq ocnum ;.. / which are separated 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 acting on it wo..;/+uc8o rm qnvcyhnuld be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 j5 x(/vr7p xj3(xm yhqm. Where on the x-axis can a third charge be placed so the net fo5 j(pqr(m /xhyv x7x3jrce on it is zero?

  Charge +2q is placed at the3.soww /gbkc6 origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on i.g kwcwo3 s/6bt is zero?

  A copper penny has a mass of 3 guf.1l;s;r ey.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 of gravity by the attraction (vt(qpq zu-ee5 y/2zel9xbc. of a fixed proton some disetc z2yp-b95(z(ueelv q x q/.tance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncoqxoqg nj1,,mky6au n,nl 54. lnducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the 6q4xj ,oul kml,y1qan ,.g5 nnthreads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. .0a tvsq47xry What is the magnitude of the electric field at a 7t .ary sq40xvdistance of 1.0 m from the nucleus?

  What are the magnitude and direction of the elect 0u(graum1bceq+t; , ns2 h8teric field at a distance of 1.50 m from a 5q+t cug2 n0e(,rb ms1euht8a;0.0-nC charge?

  A 5.0-C charge is 10 m from a small test chatz,:4(yum ez grge. What is the magnitude of the electric field at t:gyz, uem tz(4he location of the test charge?

  A 5.0-C charge is 10 m from a small test fqkc2h 3;xnjf9tg :+e charge. What is the direction of the electric field?h9qe fgnt3j2f c:kx+;

  A 5.0-C charge is 10 m from a small test charge. What is the maik5(s2o -pnpngnitude of the force experienced by a 1.0 nC charge placed at the location of the test chs p-onn25i pk(arge?

  Two point charges each have a value of 3.0 C and are separated j b3f.bqjtv,,5 *z vngby a distance of 4.0 m. What is the electric field at a point vv,jfntbqj* ,5z.g 3b midway between the two charges?

  A 5.0-mC charge is p-z ioy 700ozgahs b0mn s0y57alaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 b 7gi-yzo0z70soa0y0 sn 5ham 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 stick and a -4.0 mCy.rb xop2: .4mfbrcd . charge is placed at the 50 cm mark. At what po.pm4d fo: x ..brcbry2int on a line joining the two charges is the electric field zero?

  Two point charges of +/fcapr ;; jkfx0 +3ozy3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fieldfk30xr ;cay+oj p ;/zf at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square oti u 4sz+5kuc*f side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of 4c5kuu* s+izt the square.

  Consider a square which is 1.0 m on a side. Charges are placbfgm8l3msu7*1 sua :led 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)s:u lus agbml8m1f3*7 . 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 whe(dogc6fp4p 8btk,fnp,*n(ep16x, q ybm5kxa n it is placed in a uniform electric field. What is the magnitude of this ,5n*xnbxp 16 4,g6 8kpfy,bt(ce k fa(pmqodpelectric field?

  A particle with a charge of 4*-/0xktzzbi j 8l:q sumt(g 2-a6ok vc.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 w1g seds6p 9nhti,a7hvn/u66d c(l +zplaced in an electric field of 6000 N/C pointing downward. What charge must be placed s 7 ugdw+v6hc96p(st 1/zi nndha6e,lon the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is plaqia 8yf nsq40/ced inside a uniform electric field, and is suspended against the force of gravity. What are the my 0i4qnf/8 asqagnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the m;u3w+:opy0lvkw qh,6 h + sqjcagnitude of the electric field 5.0 cq sc wo06vu+kql, y;hj:hp+w 3m from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of hk9+)vuutq +s 3.0 mC. What is the electric field 6.0 cm from the center of the sphuvqsk9++thu ) ere?