State the law of cone;r+tcak x p ued55x,-servation of electric charge.

  Is it possible for two negative charges to attract each o /*eld0sj/ ixuther?

  Is it possible for a positive andl,8,ea bmtkn;bj i) o. a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the g8/ -ecxx-a5fybvw d8d lass rod acquires a positive charge aed8 d-a/8x-yf wb5cv xnd the silk

  A proton carries a

  The model of the atomliak g5(y w4bimtk/7- shows a

  A neutral atom alwayshk5z1 qz3 fsl0 has

  An atom has more elec 1poio)tzmuv)k/5y 8ytrons than protons. The atom is

  Materials in which the electrons are kq/t+-c6dvex - e ze5qcx. y2ybound very tightly to the nuclei are referred to asq/ xye ckc+ x6-2.e5tzvqye d-

  Materials in which the electrons are boun5yitdrh i7kurvr/;0i37ldrvh+ 896qjc sf:ld very loosely to the nuclei and can move about freely within the material are referred toc;hiyt6jvr3i sh7/:vu rkl8r+d0d7r fq 5i 9l as

  A negatively charged rod is brought near one end of an uncharl-k 5+ zjp6e ,0kliwwrged metal bar. The end of the metal bar 5-zw6 iplk0e,+jr kl wfarthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B isfm g kkt 8hy/i; orb 1zqz49ay4me:9(r neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Whichr9fry z41 e h8qz(gm; :94/oa tyibmkk statement is correct?

  How can a negatively charged rod charge an elecd7hj2b9dj, 8iqsy,hr troscope positively?

  An originally neutral electroscope is briefly touched with a positively 6a.r: zmgf,ym charged glass rod. The elem.zm:r ygaf, 6ctroscope

  An originally neutral electroscope is grounded briefly while a positfb+ipac ,m172k b +rb5a-wj mcively charged glass rod is held near it. After the glass rod is b +bj,c+ar 2m cpf-71bmwkai5removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separ5q5h59;huhbfv ju g)g ate. Then a negative object is brought near the electroscope, but does not touch it. What happens to thfh j5g gb5huv5h );uq9e leaves?

  A large negatively charged object is placed on an insulated table. A neqm gd*cby. 2 +m g(1ihl5nvea;utral metallic ball rolls 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 ta n5 2mhd+ gbgq;e vly(*.1cmihe 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 constant1t (y5.:tnfrn*y(btc 5km l lf $k$, which appears in Coulomb's law?

  Two charged objects are separatk.ut1.q7xn0*py blb y; zn( lxed by a distance d. The first charge is larger in ( q y17ulbxn;knzyx*. 0l tp.bmagnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are +a xqy h2u;p*wv3.datr,u7 nhplaced near each other on an insulated table. Which statement hduhtr. ;7uva+ an*y,32px wq best describes the electrostatic force between them?

  Two charged objects attract each other with a cwo):*s ysz s-uertain force. If the charges on both objects)z -u:*sys swo are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual att*gwotadr2ie* oz,(av6q6bac :*sh x)ractive forces of F on each other. If the *zeqcd*ba:x(vga)h,o otws6*6 2air 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. W+ tfn,4xv/ julj4ra j)hat 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 valuen+f4 j ,u4j)t/arx jvl? The force is now equal to

  An electron and a proton are separated bkd(gn 5e6 *taqy a distance 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 elecqdka5ge t 6n*(tron?

  An electron and a proton are separated by a dis 201lgckjh1uc9 c4te dtance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the pr lu kgh4cc1e9cd02t 1joton?

  An electron and a proton are separated by a dibx fkk8l92qasgi,sjv o,09 7s p-k.c,e ci; uastance of 1.0 m. What happens to the si7 9laq.vic,ua9xb; o0jsk f-cks sgp,8ke, 2ize of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squa 50(bm3b/dr4 k. 8iwcnekvnzmre. 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 the center of the squ5d 40cm83w/( kieznkv.nrbbmare?

  A point charge of +Q is placed at the centroid of an equilateral u* i7 lvig0sw c8l1ih 0xfe2q+triangle. When a 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 chq2 fwhx+iglsluc 1i* v0e8 i70arge of +Q placed at one of the other vertices?

  Which of the following is not ak0uxk3be/b- f vector?

  At twice the distance from a pointacejj5 p9wf-pfh(77m charge, the strength of the electric field

  Is it possible to have a zero electric field v g5 ujjk.*v0s:n* uyahalue between a negative and positive charge along thhugj.k: vyju*a5* s0ne line joining the two charges?

  Is it possible to have a zero electric field value between two positive cb i :igdres7:*harges along the line joining the b7e*sd i: rg:itwo charges?

  Electric field lines nea( v)jgycn rj,3 jk*(hrg0i9m pr psitive point charges

  The electric field sedf ukw1*s mazl*k701zf z*h1 hown

  Can electric field lines interssaktn8i (x .c .4qn3wkect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniforr9sb 7,1btv wgm electric field. Give a statement concerning the electric fis1gr7,tw b9vbeld in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equfzc4 bed qsx9zng59.hv- a(1mal diameters are each given the same charge, the electric field (E) midway hseb(4n9zqzadg1 v- c x fm9.5between the center and the surface is

  A cubic block of alumk0wf8/ln7zrvns a v:6inum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's vzw 6 lva0kns7: 8frn/top surface?

  If a conductor is in electrostatic eq64x/gimn:kywv6p. gg6 uv vx4uilibrium near an electric charge

  A positive point charge is enclosed p9g9;ck a:.zel a zvw4xg6;(gykeq +vin a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the ele9yw.zc+vk 9ak gvx;4e:g;a eplg zq(6ctric field at a point directly above the hollow sphere has

State three properties oo 87)eh-pui j. 3w;snmz5 vyeff conductors in static equilibrium.

State Gauss's law.

  The charge carried by one elecpn7o -;wofhp-r55md m tron 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 many more prox,gl sv s4d (pzr8(4yjtons than electrons does thisdx(lv 4gzysp ,j(r48s piece of plastic have?

  What is the charge on 1 kg of pro*8m;of ,wq tkjtons?

  An atomic nucleus has a c4 u/ot-:kvk7nlq v-1 vv 3x6bn+kbnpgharge 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 vali q,(p myzuag0q uw;rj 0k51s,ues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betweeym,r;z 5g1 a usq0q0ku(jiw,pn them?

  A 1.0-C charge is 15 m from a second charge, and the force between them - 90xljkyzx) ) )jeoxlis 1.0 N. What is the magn ))lyjx 0-jl)xke ozx9itude of the second charge?

  Two 1.0-C charges hatubu/alm8; ;ozn/ y rhyy /3xg)e59kxve a force between them of 1.0 N. How far apart are they?

  The force between a a/kk tbmrtv1v h+t/r*8ka l- v-26ps k$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm l,z mazxs6 *vxu)il9d09,s wwapart, experience a 1.0-N force. If they are moved x9w, ) , is*smax9w6zzullvd0 to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point chakd l6l;-icha ,al6f)srges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right)k-a fs clhd;al,6i6 l 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 on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placeizv4 ni(/7ubi5ej1wbd 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 direb vn(ei/izu 14bij57wction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at xi*jp8o8ma9 v z = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. j9v8 *op8mzia What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the cenk * .3wzpjfe u7fc*;b xmo/9ycter 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 thexoecm;*w/ fck3 9 * 7yjbpzuf. 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 = -1.04bi,yz6 k sv)h lc40yx nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of6)kx4 y b i,zy0ch4slv the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0 h7tn s744fxgy1un 5zb); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction u4b1xh4 t s5fnzn7g7yof the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateralfdx 5862.:9n e asie(exsknf r triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any onesrx2(.s 8 di:9fexen k6nf 5ea of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At 1 mrnmwa cr vi;43tt*7what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic forcc;tm7 v 4*warn3tmr1ie acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x =xx /vg9 zj,q;cgq*/ lqnlh4s /:ql(gp 4.0 m. Where on the x-axis can a third charq/ (* q;gs:j9p /nc4gq zgl/vqlhxxl ,ge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where ca+fyj ) m7txocd) 3dq (ik7,rdb8uy+ubn a third pfyr( 3,+oqy7 )d d8b kudbxtj7+m)cu iositive charge +q be placed so that the force on it is zero?

  A copper penny has a mass w;eqbb6 wgf*)z6 xo s)d,3:oxxqt ow/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 o zbd r.;r pgmg(u6qab7x o( f,)7kimgdyz 3b41f gravity by the attraction of a fixed proton some distance abroz f.,(; mz3gbkmbpd gq7yu(6i4ar ) xd g1b7ove it. How far above the electron is the proton?

  Two 0.20-g metal spheres rt1yv;i h/rw s5lyy8- are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical chargwlyhyi/1rrt sy 8v ;-5es, 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 is th zae+l j6jb2yecp- 7hcmjh.m ed19 ;+te magnitude of the electric field at a distance of 1.0 m frhey2c6mblj +.7- tjzh jcpem +e91d ;aom the nucleus?

  What are the magnitude and direction of the electric field at a distance o 9pmur 7),+nxw6ihgkby h6 /qof 1.50 m from a 50.0-x7,ybwo69q h rph gnk+/6ium)nC charge?

  A 5.0-C charge is 10 m from a m xalq /+(oxw/small test charge. What is the magnitude of the electric field at the locatio+ w(xaql/ mox/n of the test charge?

  A 5.0-C charge is 10 m from a small tezpjbk5 p)db -,gkg/mkzd,v4 : st charge. What is the direction of the electric fiegpgzmzk:5kkd b -pdv ,)4 j,b/ld?

  A 5.0-C charge is 10 m from a small telcazv)t7d)n v u*9n ,hov(x8vst charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at th78d,t)cx nzv)o lvuvnh9( av *e location of the test charge?

  Two point charges each have a vazt (-pae.(ux bz:-ggelue of 3.0 C and are separated by a distance of 4.0 m. What is xp uzg--(eg(t.:ebaz the electric field at a point midway 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 c0bijm1 76ryvh harge 0mjv rhby61i 7is placed 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 mehiy.p .i*cht+ ter stick and a -4.0 mC charge is placed at thhi*.pihc+ ty .e 50 cm mark. At 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 arg/ure cn nq4*4e placed at x = 0 and x = 0.20 m. What is the magnitude of the elec */n4ncu4qg retric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squkc(95god si3fgih- ,0ze- papare of side 0.50 m. The last corner is occupied by a -3.0 a 53 e k-(,pdipfsgc0-ohi9gz mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at sfc9fa/mk9 ram. 9ns ,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.f9kna ms./9am s9f rc,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 charla quah,- kv41ge of 5.0 mC when it is placed in a uniform electric field. What is theal,4qvu 1akh- magnitude of this electric field?

  A particle with a charge of 4.0 mC hast5m)1kfxs z *sj2a+ 3fwk 4pos 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 paxm,kt-*atk 0ry-lg6c+ r-jx laced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be su*y+ ,6aktxkxgra-tm-0 rlj -cspended?

  A foam ball of mass 0.150 g caroghjy rmk 8m,: a9h*.yries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended agaijgk :y9rh *aom,mh. 8ynst 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 m95xgkwjm t4 )1ejxfryje*.7 rC. What is the magnitude of the electric field 5.0 cm from the sphere'*k4txej 5y g9fej 1r).7x rmjws surface?

  A metal sphere of radius 2.0 cm carries a cham,4b(h* ih cdmrge of 3.0 mC. What is the electric field 6.0 cm f,m4(i* chb mhdrom the center of the sphere?