State the law of conservation of elep li u5c.5jz ;sga/ xh/utbq1.ctric charge.

  Is it possible for two negative charges to w3uia0hs7j+6el)ixpm (f. zr attract each other?

  Is it possible for a positive and a negative charge to attract each myovucj x0j7am 9z9lgz yd5;j0w8,m,other?

  A glass rod is rubbed with a piece of silk. During the process t4vhpr)h: n l l+6ua:,ix l shrf:h.j1ehe glass rod acquires a positive charge and thhr6+:j: , xvia:14p)urefhl.l ln hshe silk

  A proton carries a

  The model of the atoem ,-x3h e(hag* 8wtdem shows a

  A neutral atom alwaysv noupol4hisz0 s.)e -ya o)us9bosi8/0 z(+ e has

  An atom has more electron,s g yo* pjy3e1n1jx mjly01o)s than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refzopd( ;(gnq2;xbcb m 2wep4e/err xbcppqbe e;4 g (o(2;zw/2ndmed to as

  Materials in which the electrons are bound very loosely to the nuclei and xfbag68 dy y- e5phy9m6h2a +gcan move abm yfh+ha9y- 8y5gd62b 6xapge out freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal barzyi*b,/:11w dda z anb. The end of the metal bar farthest from the charged rod,*wz/a1ad d i n1yzbb: will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They arqym matw6 hz5g(.e59r cb.q-ve placed near ab9h.mew m5q.tr (6qg5-yv czeach other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod char,gc1w +owzx5oge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargedlgbk 3(1,cgc w.jqelt ,om .4drw3nf- glass,d rq,3lg cbgcw t 4.en3.lko(j1-mfw rod. The electroscope

  An originally neutral electroscope is grounded briefly::-voff:hzj :(k bz )ls 4+rqvnxt p;w while a positively charged glass rod is held near it. After the glass rod is removed, the electr: +)hvrlno;x :p: z(4zk:-fsb jf tqwvoscope

  A positive object touches a neutral electroscope, and the leaves separate. Thenosj:t w3a ;cm kig;:n1 a nena;jwi 13:; k:gctmos gative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tau xi 3.feyy96mze*1kn ble. A neutral metallic ball rolls straight toward th3u.ei*zy fxey1kn9m 6e 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 Coulomb constantwc.t u xl*;,qz $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chfuic+egfb9,wz: f+ ; vq bb,:parge is larger in magnitude than the second charge.f:wgzi,upef+ ,:;qfbvb c +9b

  Sphere A carries a net charge and sphere B -zfl)rd geh3z d(p,h: is neutral. They are placed near eachhe - (:p)zrd 3dl,gfzh other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the cca a: :kmx;l7pharges on both objects are doubled with no change in separation, the force bla7xmc :p a;k:etween them

  Two charges are separated b*4x 5m(lhdm,p x e9wcby a distance d and exert mutual attractive forces of F on l5 mx x ,epbh*dwm(c49each 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 frslwuo-v-8y.)o in1 w orce F. What happens to the force between them if one charge is doubled, the other charwunvi8 os-)l1r-w oy.ge 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 separated by a distance of 1.0 m. Whc2v :tp(k/ ulxat happens to the magnitude of the force on the proton if a second electron is placed nexp(2u/klt:c vxt to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to .l9:9wqj zm3co uxb1q the magnitude of the force on the first ele wxlq.z b39jc:u1q 9omctron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0f vc4g8lce98)g/ bcns m. What happens to the snls8v4ggcec /f 98b)c ize 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 s5k6. (eay7q kfbg7vp qquare. 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 sq7gb e( kq.a5vy67kfpquare?

  A point charge of +Q is placed at the .xg tx17j6z wqcentroid 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.w1x jq t.gx7z6 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 not ,)wzx vv+g j5sa vector?

  At twice the distance from a point charge, the stk;ljk//)yd9kvy e9mz*op0l crength of the electric field

  Is it possible to have a zero electric field valueswq)/w6 63nqtdgq4u8o s; c vag(9r x mk18qvh between a negative and positive charge along the line joining the two c d9q(6rqvsv3cw48 a hsqn86ow)uqx;k mt g/1g harges?

  Is it possible to have a zero electric field value be/hp t4s( rm81zzdlf (otween two positive charges along the line joining the two charge(zz ( hs4o8lm pf1/rdts?

  Electric field lines near psi9aj:fu ,x(s mutive point charges

  The electric field shl lx+ 1r 3j;tu+frk1hh+jw6)lqm+cpx own

  Can electric field lines intmega: qqqp tzsk y.y9/)t/*6eersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform bjne iiv1u by, pc/(21i 3ti+helectric field. Give a statement concerning the electri2beu 1i3 / ,in1pijtych(i+bvc field in the block's interior.

  If a solid metal sphere +jgza3i +ti4xj : +* jh*kmcuiand a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and tiz h 4 +u*jmk*xciji:3j+ga+the surface is

  A cubic block of aluminum rests on a wooden table in a region where o r) s z+17-penrxs2dkktq t40a uniform electric field is directed straight upwar qt1s -4dk kro+t7xn2 pzre)s0d. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elamx4nqerg v.5l9s,-w w vj,b *ectric charge

  A positive point charge is enclosed in a hollow metallic sp;r/lv9 lr cv0 1bl4nsnhere that is grounded. As compared to the case without the hollow sphere, the electric field at a point dis rl;1nvcl/9 r04v nlbrectly above the hollow sphere has

State three properties of conductors in static e6dk1i 3:uudlk ,gd g,uquilibrium.

State Gauss's law.

  The charge carried blu)9qexh 0e+ eojg,t -+1ao yiy 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 d48 7tkni2z.* wi44phctev ma net charge of +2.00 mC. How many more protons than eleck ipcd2w4*t7za4e i8hnv .4mttrons does this piece of plastic have?

  What is the charge on 1 kg of protosftm xs-, y +5gsz7p/ptt4 vk,ns?

  An atomic nucleus has a charge of:txvp ov(kc* :b6 gyspjw/03a $+40e$. 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 chargcc,cn*wm(8m j+7x fnfdz3y (r g(8i jie values of 2.0 and -4.0 mC, respectively. What is the magnitude of*8y8+fm,nn(mcjifg7 cd czi( r3xw(j the electric force between them?

  A 1.0-C charge is 15 m from ag my sk /gwj-6oai ./*pmy(lz* second charge, and the force between them is 1.0 N. What is wy /6mgi m s(p.l*kg/zo *-jaythe magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. ;j*x c7hq4bjaqrpx72 How far apart are they?

  The force between a fm9 jx4e xhfi*.c2q w*$30 \; mC$ 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.dy1 l.rpev j96 bqa (m/+co3t0:x hfkm0-N force. If they are moved to a new separation :ev .p/mayolc9hb10d +kt fj3r qm6x(of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed owplg zo(k2)64b .s- h1jgrgkdlly);vn 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 direction of the electrostatic force which acts on the charge ) gow;(v d4gzb1ks-r.yhl)6pllg j2kat the origin?

  Three point charges are placed on the x-axis. A charge of +2.3m9sf :n; wlx *p.cdzubl3*uu0 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 the magnitude and direction of the electrostatic force which acts on the wuxs z3;.3m cbl *nfpu9d u*:lcharge at the origin?

  Three point charges are located at the f s g72:/2zsvj fau9ramollowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q322aa7gf u:ms/ zv9sj r = -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 center of a square, anodf0x8q( +i+qd wiwf-:kr : 8k pry0exd 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 t 08q+yqrkx:ip r0ddfwwe :k i(x-8+ofhat 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, 0.1rcoi1s+ suzskf01:cba f)9(h . lij a50 m); Q3 = 5.0 nC is at (0, 0). What is thkhur0zis cjs1l: .f5o )bfc a(9a i1s+e 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 a:6ns rm06hbqt t (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forr: b ts0m66hnqce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of a6dmhxurw 082 s9 p6t(7yrtppkn equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrow(9m2pdtkpp h786t xs6ry r0u static force which acts on any one of the charges?

  Consider point charges of +Q a0 ;1u 45 px*b(;ax5 diz+gc cnrgctltmnd +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a chan015l c+agxi5(bx 4*cmr tp; zg;tducrge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at to, 6phf,wvc(9vs2. r tvu.yykhe origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it isf k,tvuyh c,.p96rvs. w2oyv( zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where cae2,fmvkcy+ qr sv;9t9dw*e ,gy*8bn wn a third positive ecw fqdn2srt y 8v;y9+ke mbvg,9*,w *charge +q be placed so that the force on it is zero?

  A copper penny has a 2 jeoyz 51jt w*9nyi1omass 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 againsn1m - g 3iy6:jp6epamht the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the pro1h3a6i6 :gy pm-jenm pton?

  Two 0.20-g metal spheres are hung from a c) x5m8+* zowxi1 amdzkommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic moxzawxz+8 1 i5k*)md 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 vke6,t 30xko9ffk:de41o n oi +40e. What is the magnitude of the electric field at a distance of 1f06:don4ofe3 9ikke t1k ,vxo .0 m from the nucleus?

  What are the magnitude and diu n:ncac77r udv(wb6za5(kp -rection of the electric field at a distance of 1.50 m from 7nu 7kbr nwa5-(pva(:d6c uzc a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test chargecoscs3lm :t 96. What is the magnitude of the electric field at the location of 6m t:cocsls 93the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direcl8v *4z onu4m(u 3yohjtion of the electnj4 *u834(vlmzuyh oo ric field?

  A 5.0-C charge is 10 m frohm 0 yka6 yvew(re8le7v)* w+im a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge? wyv8r(hmv*0i6e e+laey7 k)w

  Two point charges each have a value of 3.0 C dgnwyj b)n* :lk3e f3+and are separated by a distance of 4.0 m. What is the electric field at a point midway nfn)w* gd+ljk3: yeb3 between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mb6*h(l+w, le ljp7xigr r,k:yC charge is placed at the 5 wylg:ipkj6(h*,7 xer+lrl ,b0 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 m *h a0c+ cc.ppoh 1nn2aykwn1:C charge is placed at the 50 cm mark. At what pna0 o+yn2 :p .1ka*wcchp1hcnoint 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 pe84 p h)r:huyd )ku/cv;z)orx = 0 and x = 0.20 m. What is the magnitude of the electric ;r)vr) uy/ucezkp)4 hodh:8p field at the point midway between them?

  Three 3.0 mC charges are at the rbyhuln 63t0bfbkre:2p5*c. 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 squarrf neckprl:b*62 0b3thyu 5.be.

  Consider a square which is 1.0 m on a side/sik d5:y6xe ( uhbeajk. * +hzy:s+mx. Charges are placed at the corners of the square as e 5/mshdx y akyz kj:+s:b(.6+eu i*hxfollows: +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 square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a u)/h.hz ; 9jbpaka9w3psf4 2+zny qzyuniform electric fi hbfza3+hk;yu jp/pzq. 2 wsz 994na)yeld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has 8j,vd9,scl uztq: bg -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 wsh/ 2gv)7hs gf*tu w:g is placed in an electric field of 6000 N/C pointing downward. Wh:7h2w*f) /hwtsg svguat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. .adjd9q- 8ihm The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the elect-i8jaqd 9dh. mric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 wvc1y()yo-dj mC. What is the magnitude of the electric field 5.0 cm from the sphere's surface?- w( vcd)y1ojy

  A metal sphere of radius 2.0 cfjnpkts:o ua9 *w8u/5 m carries a charge of 3.0 mC. What is the electric fielp 8 unta s:w9fouj*/k5d 6.0 cm from the center of the sphere?