State the law of conservation d ijor8nj /ykd6w6yvg;(,yf: of electric charge.

  Is it possible for two negative charhw4xqe /dox7 ;i7xd1eges to attract each other?

  Is it possible for a p-xt kq, a4( cd6r4rm3gyj7f b2 eck3auositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silkh 82l0it odhlqgt*;k.l08.d zfbo 4cf. During the process the glass rod acquires a 8tl.hdhq od z0t0l8f*i2gf;klb .co4 positive charge and the silk

  A proton carries a

  The model of the atom syh5n9a5qsg 69 0crlvk hows a

  A neutral atom always hasd0oa 1v rv,y8l+v;i+u6lsgw s

  An atom has more electrons than prv08- knhffxi9otons. The atom is

  Materials in which the electrons 7ztr*d-x:p cware bound very tightly to the nuclei are referred xc r-pwtz:7 *dto as

  Materials in which the electrons are bound very loosely to the nuclei andl + 3f:dc,( dfq,rteqw can move about freely within the material arw +q,(c3,de: qfftdlre referred to as

  A negatively charged rod is brought near one end of an unchargea3q,shwbutc/r+a s/2 :. s ,lbbsey,pd metal bar. The end of the metas2p ./ sss,ar wbqb,: ae3/tbhcl+ y,ul bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B pu-7rpa5k7bt 3g ;lpq09cuwois neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is g0u5a-r7qp ptw bk;9go73p lucrounded. Which statement is correct?

  How can a negatively charged rod charge an electroscopef3vi;qx (2xkl positively?

  An originally neutral electroscope is briefly touched with a positively charge,ro;z ox8n0nj - ce.c lj3ocx2d glass rod. The elcjnooc;-er,. l jxn zc0 8x23oectroscope

  An originally neutral electroscopeql )d(riza(i5 tko(em r d tk4ks8*b7d.fa1(m is grounded briefly while a positively charged glass rod is hel lezb )r(( m ttk* dfkriad (d85oqka4m1is.7(d near it. After the glass rod is removed, the electroscope

  A positive object touches a neutraltd9;r p s1pzu8 electroscope, and the leaves separate. Then a negative object is brought near the elec1rpduzt;9p s8troscope, but does not touch it. What happens to the leaves?

  A large negatively charged oi):me, z q8rihbject is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along theei, m)h 8q:zir 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 thek -sa8afx 2p,vw 4 klmh 1hv.)s7tif1s Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separ9ishl+mnlu+hq j (;:uated by a distance d. The first charge is larger in magnitude than the h+hil9( luqmu +:njs;second charge.

  Sphere A carries a net charge and sphere B is newyt qj hwa3if;a6: vbpabmdt41) 5g.3utral. They are placed near each other on an insulated table. Which statement best de j qhtw63:fy5abtpb1m3agi; 4 dva ).wscribes the electrostatic force between them?

  Two charged objects attract each other with a ceosy)yz2( ld( 0y6mxutni. v m:rtain force. If the charges on both objects anyvy2)m(.xzo t(s d lim6:0yure doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutuazy 3y8pvqq -a(l attractive forces of F on each other. If yp3yz (qv -q8athe 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 happeny z8e akg.gl 08r9n4ies 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 value? The force is now equgzel.ei8 rk 9g8n4ay0 al to

  An electron and a proton are separated by a huj9 f)pho b()) (cdaldistance of 1.0 m. What happens to the magnitude of the force on the proton if a second u(lhoc 9p(b h)d))afjelectron is placed next to the first electron?

  An electron and a proton areh.xxgf0h;qd t 8xc i46 separated by a distance of 1.0 m. What happens to the magnitude of the force on the firshthx g.x fd4 ;ciq0x68t electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What9)lhuqp+q ;wy happens to the size of the force on the proton if the electron is moved 0.50p 9qu; y)lwhq+ m closer to the proton?

  A point charge of +Q is placed at the center of a square. .e hcnp30bh,uqihm(+5hv1rn 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 cunre0 +h3(. ,vm hpibqhn51h'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 the centroid of an equilateral trian:2*y5h+ 0jxz-zijdb okxn 5 lggle. When a second y0 :k5z*x nox5 +h2ldz-jijbgcharge 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 followingugu5 ),vs1 ufldca)s , is not a vector?

  At twice the distance from a point charge, thdx-xr7 z 9wdq,e strength of the electric field

  Is it possible to have a zervtse 4;zb t.hw (f-4nvo electric field value between a negative and positive charge along the line joining the two chargzwts;v e44b. -ftvh(nes?

  Is it possible to have a zero electric field value betwnxk;a4/ v.dide0e /izeen two positive charges along the li/; i.eddnxzva04 /ekine joining the two charges?

  Electric field lines near psihf b12; njtj,ctive point charges

  The electric field shon)zw :rk-g g,dwn

  Can electric field lines intersect in free spa+*j v uo)2zhkrce?

  A solid block of metal in electrostatic 80jx 1mh;mywzgt49ob equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's inte zb;8x10hm4o9wyjg tmrior.

  If a solid metal sphere and a holl xexoo (58nn-kow metal sphere of equal diameters are each given the same char8xo5 (n nk-eoxge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests l/ + ywtm5ln+a i g7om .mrg0hqu3i3b9on a wooden table in a region where a uniform electric field uao7gm+3btn wmh/.gr3ym l95ili0+ q is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in eld(;m ap7smobbg+ ge-; ectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallicrs, )u-hq4 08y gahqag sphere that is grounded. As compared to the case without the hollow sphere, the electric f)q4h rgg,ha q s8ay-0uield at a point directly above the hollow sphere has

State three propertieh/ov+pj-ce07 l fa evmjh47dgse p*6(s of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one elecqed 2 xnug+r rs:jlk3y9cpv 9* b2wi.8tron 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 mCmx uf8k ao935v. How many more protons than electrons does this piece om u9x8a3f5okvf plastic have?

  What is the charge on 1 kg of protoq3 kqgmej7ztta7: .k*ns?

  An atomic nucleus has a ze-9 wrku*sj9 charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatedmjz:zl 1 cp 1-b/(fqoo by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the elecm1jpboz1 o f:/z(lq-ctric force between them?

  A 1.0-C charge is 15 m from a s.- 7ucb)fmzqar.cy ;hecond charge, and the force between them is 1.0 N. What is h )-a rmu7cy.;b zq.cfthe magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far 0,h ytrb;;z bjapart are they?

  The force between a np7d:t e p4p8y$30 \; mC$ 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--k)v 6 gzefavq-hn 8;2r,xwixN force. If they are moved to a new separatio6x v ,8eaf; nvi-2gwqzr )h-xkn of 8.0 cm, what is the electric force between them?

  Three identical point charges v b06 1qr1lkv8 chp4nvof 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. cb 6h40vp 1k8ql vnrv1 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 placed vaoa1dh ,jjz,1v99ug,*u utkat the origin, -2.0 m C tovk d1t9a,uj1oa uv,ghuj z*,9 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 acts on the charge at the origin?

  Three point charges are located at the following positions: Q1g,( )pkkxely3 z5d;y y = 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 ;5gly 3pd)zx( e,kyyk the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square drg /cpl0xx2eeo1 ;+h, and a second point charge of -Q oexh 2de 01rxc/g ;p+lis 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 -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); ha h (msta,5h-Q3 = 5.0 nC is at (0, 0). What is the magnitude of the -,htha( asm5 hnet force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10e22 wlaz (f8 yn6hzfm22 +(jedepi 4fc0;vi oc m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 f8 ive(c0 2o fa2ejydz+2cw n 4ilf2(ep6mhz;nC charge?

  Three identical charges of 3.0 mC are placed at th)l o3bifd3tgmw)7zl +h1 y.zre vertices of an equilateral triangle which measures 30 cm on a side. What is 3iz+gbz)1y d w7r)fl lohm3t.the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sxi ofn:r4kr5-eparated by 3.0 m. At what point, on a line between the two charges, would it be possibin-5x kr:o rf4le 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 or)v*oexm.udj5re x ::qe vz7s.igin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placexz dx:) 7s.v. v:oqre*u jem5ed so the net force on it is zero?

  Charge +2q is placed at the origin and chargewtzn4 q6y*8m f -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force onnt* w6zy4mqf8 it is zero?

  A copper penny has a mass of 3.0 g. A total 0 r.)bi wpnvs 6mh(nz9of $4.0 \times 10^{12} \; electrons$ 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-s lqx/mqbw- sgzsznz3h1,0) of gravity by the attraction of a fixed proton some distance above it. How far above the electronxz,wq qh0g /-lz1z) ssbsm3-n is the proton?

  Two 0.20-g metal spheres p 0ryr doh53(sare hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges,ho5rpd(s r0y3 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. Whatg;vnw gx12bu- b8a8ii is the magnitude of the electric fielbbgui21g-i ;wxv 8a8nd at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at,.jl (dyirc(f a7j1t(f )sfxt a distance of 1.50 m from a 50.0-nC d tyixa()17sj,c ffjf(l(.tr charge?

  A 5.0-C charge is 10 m fro ee6f1 cf;nl4cm a small test charge. What is the magnitude of the electric field at the location of the test charge;14c6 eenlfc f?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the e col fm 612 fu7jb-t9qy*p1ykm*sr srjcbw 5+:lectric1jf lw*k1pc6mof5sbmrb:y2s9 7 r t*y jqc+-u field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudeb b+4j4ua3x ru of the force experienced by a 1.0 nC charge placed at the locatio 4 3jbru+bxua4n of the test charge?

  Two point charges each have a val23qb;ai8j1,d:eu e0tzvmq glue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chaul8dg i;q ejbt e2mq:,0a z1v3rges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charg1 zpux8j 8p6g5z lf*yse is placed at the 50 cm mark. 6j pfpgyz8ux5*8zsl 1 What is the electric field at the 30 cm mark?

  A 5.0-mC charge is pwq)41 vsml6a glaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a l6 4)wqgl1sav mine joining the two charges is the electric field zero?

  Two point charges of +3.0 ;mhi+5ttky t 1+(kgmbmC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the phtmk1tk;mt+ 5yg +(iboint midway between them?

  Three 3.0 mC charges are at thgsy cw j*3q*84.a4genwrskh + e three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.gnwah +y.4ew s* kqc3*84 grjs

  Consider a square which is 1.0 m on a side. Charges are placed a v9jx b-.zdhw89rf.bqt 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 mfq9xdvjwhr9 -b8. .zbC 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 f-fjh:t4aauqr (7ec d7y ) g:dgn: c:lof 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric d7r(:4n 7la:f hu -j)gq: eytcdgf:acfield?

  A particle with a charge of 4.0 mC has a mass of ok **.bwm lj3a$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 :ny2+ uugf2yx g is placed in an electric field of 6000 N/C pointing downward. What charge must be pla g22fxn+u: yyuced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball jrd2 f, ;mx/ep93xwuad )bi,zis placed inside a uniform electric f3b,2ez ir a9p,/wxm)jxdf;u dield, and is suspended 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 y. cpd+aei9 umq vqc7pgvf8+7/q,nz0 magnitude of the electric fi ,+z+g a7fpcu09vne 8pqv. qyc m/d7iqeld 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 thiv3nplug6;n vwro +.e2eqa33e electric field 6.0 cm from e3vnlqvo e;pna2 uwr gi.36+ 3the center of the sphere?