State the law of conservation of elery83gti 0b1d +xlovq;ctric charge.

  Is it possible for two negative charges to attract each oxv5 *9yh3gjmfther?

  Is it possible for a positive and a negative charge to avb bz)5rx y:/- rtdb.yttract each other?

  A glass rod is rubbed with a piece of silk. During the process th k 6gv8m o2g.tmuc)rs(e glass rod acquirem2rsm(v6 cg t .ko)g8us a positive charge and the silk

  A proton carries a

  The model of the atom ;4hnjp gdi550 y5boedshows a

  A neutral atom alway*u tx*/ 5v4 yu;v 5e+swfflafqs has

  An atom has more electrons than protons. The atom i n-rdcwxjmq(i: k);a/s

  Materials in which the electrons are bound very tightly to the nuclei are pm 3 snx4 5-xamqr*,egreferred ton* e5-xxp sa ,rgmm34q as

  Materials in which the electrons are bound very loosely to the nucleif ja+vv 5d:aci7wv23t and can move about freely wiitv+v c2 : w73f5daajvthin the material are referred to as

  A negatively charged 4:upx bd0 8hle:o*lgh rod is brought near one end of an uncharged metal bar. The end of the m8:h:e4h dp lxgul b0o*etal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B ine.d.4huyh, j jeu+k k(jm6p9s neutral. They are placed near each other on and(9ue, 6.kumk+j. ejnj4hyp h 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 h1l.- b g1b w.5qjhwjfelectroscope positively?

  An originally neutral electroscope is briefly touched with alx;ir: n /x7)vwbfhi * positively charged glass rod. Thwh x rivf ln*/x;i7:b)e electroscope

  An originally neutral electroscope is grounded briefly while a positivelgm7t2;x8 wkb by charged wtg 2xb;kb8m 7glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves m*(qm ;;(peg d: 5jye2dz,xb ly(phfrseparate. Then a negative object is brought near the electroscope, but does 2xzjm(fge ( pb*m(e,y;d 5r; p:qhyl dnot touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutfd7tz c6 6vrxd6mepd o3 78ski1nd- ,fral 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 the negative object. At no timevsd,t-z1 e8rpkm6c xno7diffdd6 36 7 does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constant6fgqb pa v+;yy8j1rw( $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge isnr1jvg *c3m f5 larger in magnitudrfng13v 5m *jce than the second charge.

  Sphere A carries a net charge and sphere B is neut7a0:zh ui tn8kz5i(z:bgq l*ural. They are placed near each other on an insulated table. *::0 58uunz7la kqh giz bzi(tWhich statement best describes the electrostatic force between them?

  Two charged objects attract each other with *i0v 8f p6p+kx1lklkfa certain force. If the charges on both objects p8lkf l *f10p6vkix k+are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attracti zlq22o sr,d+kve forces of F on ez, l+2ksor qd2ach other. If the 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 hayzkbi.0 bpx9h.k5d0 tv f0l 6kppens to the force betwdtb9ihb0p .yk6xfl5v kk z.00een 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 sepaq 0o uaficvqz-,9 od.vh46/kcrated by a distance of 1.0 m. What happens to the magnitude of the force on the proton idck-qic/z. u v9qf4v6a,oo 0 hf a second electron is placed next to the first electron?

  An electron and a proton 94 uwm876gb8h621rrgx3k3l trpvwoas2jvc w are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electroo2 jr32w lm9s3xg b67wvuh86 k r 8twpcarv1g4n is placed next to the proton?

  An electron and a proton are separated by a distance oa7d p h*gi:s*,x gfo+gf 1.0 m. What happens to the size of the force on the proton if thxg*+7:g sof*,pgdi hae electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a sqc72sy.j 0lqv8jqnmuc*u .qqno )2v6b uare. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force ofv8ysb)7m60.vjjlqq2n2 u ocu n q c*.q 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 ee zem1 tm2;bd e bb78z2*)bgskpt*:j placed at the centroid of an equilateral 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 theb gek) mbt*t:8mbbp *zee;dj21 27 sez 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 not a vect6uviu +2ensf9i*zo2l) gxq5 yor?

  At twice the distance from a point charge, the ap/ef) ,j w06t: b zbxo:b7qggstrength of the electric field

  Is it possible to have a zero electric field value bwyrcbm /;hqy2nu,r 2 4etween a negative and positive charge along the line joining the two charge2 n/ ;2rywbh,yuqmc4r s?

  Is it possible to have a zero electric field valuekmj/qoj + gk(8 between two positive charges along thej/jk8 mk(ogq+ line joining the two charges?

  Electric field lines near pr -1jrf(wg 6j:mosmf/v 33hx ositive point charges

  The electric field shown psxf(cyhya 6u6rcy *qbv4 8a6r05*m a

  Can electric field linew i4+4q tccm3ys intersect in free space?

  A solid block of metal in electrostatic cw .w,rgs-jqtj *lqh4yq8zy:iw. / 7pequilibrium is placed in a uniform electric field. Give a stateqr q8hl7 y/wwsjpgzjw, i:. 4y.*t-cqment concerning the electric field in the block's interior.

  If a solid metal sphere aya-t8 r+r jzgz 10ez:yx67eb1or m;aknd a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the z8z;jxyz1 a7broater 0kg rye: -m1+6 surface is

  A cubic block of aluminum rests on a woo1j77ohr*h5gwku0ex ask86 ls den table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the bus7oe 0 xs7l1hahgk5w k6r8*jlock's top surface?

  If a conductor is in electrostatic equilibrium near an eleclypa9ah18df/) zg f6htric charge

  A positive point charge is enclosed in a hollow metallic sphere r,h5mk oc -ucqq s1/5ethat is grounded. As compared to the case without the hollow sphere, the electric field at a point directly acos-cmqe1/kr hqu ,55 bove the hollow sphere has

State three properties of conductors 4bzims 5 e/gz dh4k31win static equilibrium.

State Gauss's law.

  The charge carried by gcdnh:,xl44uggoy0zdd) 1a 6ro rg( :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 z*ij 0d.o le9v-)feuy. How many more protons than electrons does this piece of pl -j)fy*idloe9 zu0ve .astic have?

  What is the charge on 1 k7eksm zkpuph(f/1us*t./* ewkv(e b9g of protons?

  An atomic nucleus has a cha v cfffbedx 72ah:3*d) h6wx-xrge 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 mC, r uwqmxt i 4vcmn76)6+kespectively. What +76)ku cqv6w tmm 4ixnis the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the-3qlgufd.e-*r f m7 m5sbc3iu force between them is 1.0 N. What is the magnitude of tbr-lm5 3 ed7sc*q3ffm g .i-uuhe second charge?

  Two 1.0-C charges have a force between them of 1 vytwx g:l*)g2.0 N. How far apart are they?

  The force between a 1 o nua7 nu5ow8c-z1q bvr1yw7zp;/sy$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expe 69-p.osn/ho+piaw ;tf im/zerience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electri. 9woop+mife-tpiz;h //sna6c force between them?

  Three identical point charges of 2.0 m /wje mauu w8s:n.db8cmy 6p-.C are placed on the x-axis. The first charge is at the origin, the seco.y/ 8pjb 6maw.demw8n -:scuu nd to the right 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 ch bzq1 uy,zeic)h3m z2,arge 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 thu m3c,ziq z y2be)z1h,e magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions5gufg. iquqpe:dmf .;1 u: vp4: 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 magni vfuegpq;. m.ug15qd:p fi4 :utude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a bjxnd-(x( .+ hrj0tca 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 the center charge if a third charge jad hnxrj0(t c+ x-b.(of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1. * 2yereqi6pw.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at 6iqw*ee. 2yrp (0, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.xp )taqlj21l- 30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the ntl j)1-a2lx pqet force on the 5.0 nC charge?

  Three identical charge2**b+eiiybl9r k ek kr2fz(pv ;*rs (us of 3.0 mC are placed at the vertices of an equilateral triangle which iv;(rk(+*i br* rf 9e* 2eybkplkzu s2measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated40p fkd tvo*f+8;(b8z zwoglo by 3.0 m. At what point, on a line between the two charges, would it be po+ b8z(ko*p0d84ztl; wgv foof ssible 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 origin and a +9.0-C charge is at x = 4.0 m. Where on hf5g)+ ta 3eiuq5-mpw5wzoe 4the x-axis can a third c pg)-iwh +w qu5a5 4eoe3m5ztfharge 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 can;qa.oufz cgq6s8.-ypclt5:0h l0cx m a third positive charge +q be placed so that the force on it hscqfg.at6 m pxo z-;00:5 lyqc8.lc uis zero?

  A copper penny has a massp( cm i*il3 *jtu,m4 ;os)ohwz 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 2 7cz)g/v17 ovvxc evpb6i8hz up against the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the protvv i627bc/op)z1vvz h gcex87 on?

  Two 0.20-g metal spheres are hung from a common point by non-7gl.h8wy w *tjy2n zq8sh(kiconducting threads which are 30 cm long. Botjw2i8.k zwlt sg(7yyh-8 n*h qh are given identical charges, 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 haz:ea m;g0ax9os a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucl: e9ago ;am0xzeus?

  What are the magnitude and direction of the electric field at a distancec4:mn il b5+tk of 1.50 m from a 50.0-nC charge :5 kc4ibtmn+l?

  A 5.0-C charge is 10 m from a smalli s(5 scfodg8, test charge. What is the magnitude of the electric field at the location of the teso(i,s5g dfs 8ct charge?

  A 5.0-C charge is 10 m from a sm;o.n9z p 2yhpf : q/ea(akal+yall test charge. What is the direction of the electayp./z knalq;(h9:2fy opa +eric field?

  A 5.0-C charge is 10 m from a small test charg,0ss9 8l urqxne. What is the magnitude of the force experisq,ux l0 9n8srenced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges eac- 3ljvk8,mg mfh have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between8 ,mk3jfvmlg- the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC htbubht )x7e 7qum) ,nm6b-4bcharge is placed at the 50 cm mark. What76u qbttm nhhu b)ex 7-,)b4bm 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 fi7 lwt4nwa4;/a 6hqn klc2v)a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the twoaq; 2 c6)fi4wn4tw l/lknhv a7 charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. yr7 +wkz3)vt lWha)y+r7 t k3wlvzt is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners o*r bq0yu+m 3lbf a square of side 0.50 m. The last corner is occupied by a -3.0 mCbq bl3+0 mryu* 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 0/fwwub18 oe:zv zths2d(1 ,g8nhavh 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). What is the magnitude of the electric field at the wn0fv zsv1 hhb,1t2w8g zo ed/:(8uahsquare's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed px( qq3m 7jw+eth z25lin a uniform electric field. What is the magnitude of this electr2lj+q( 7mqxe3wt z hp5ic field?

  A particle with a charge of q2z9xv9,xnfyx0)sw n 4.0 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 placed in an electric field of 6000 N/*n,ef1 n3ohmv geaf6* C pointing downward. What charge must be placed on the ball for it to be su e3 6men*ovang1h*,f fspended?

  A foam ball of mass 0.150 g carries a chargvir;mm3:1q oge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and dirg3m vmoq; 1i:rection of the electric field?

  A metal sphere of radius 10 cm carries a charee*1eqd rc+17fd0 m jfs9bb:p ge of +2.0 mC. What is the magnitude of the electric field 5.0 cm frs1erq9f0bd :p*cb+m7 edj1e fom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the zoh/u4b1u: 72ejdmp yelectric field 6.0 cm from the u2z/u1 me4 yjdp7bho:center of the sphere?