State the law of conservation of electric chebqz-yj e40;m/3s oyi 5i;zxi arge.

  Is it possible for two negative charges to attract each otcnct 1lq,: t,dher?

  Is it possible for a positive and a negative charge tu4uo2 uda4 (iwo attract each other?

  A glass rod is rubbed with a piece of silk. During the priz 0 (c/f*bvxasm6dq 5ocess the glass rod acquz/b0q5d x*m c(s fa6viires a positive charge and the silk

  A proton carries a

  The model of the atom ow:cn914 0yna( feomjshows a

  A neutral atom always hafgh;wqz;t4 5y b/ t,b0svtym- s

  An atom has more electron iylb*8r 2nlvk4 )wvs9s than protons. The atom is

  Materials in which th (r uk(41jjp-9 y z inboge/i-,qx0cfae electrons are bound very tightly to the nuclei are referred to a9yj(g/ 1a(pi4 ,-x fue-bq ircn zk0jos

  Materials in which the electrons are bound very looselj(y-duh8s54. t.hw jz t7hdwsy to the nuclei and can move about freely within the material are referreds d(8j tw.5dh . yt4uzw-j7hhs to as

  A negatively charged rod is brought near one end fc)9z 5e/hxg 7g xhui.of an uncharged metal bar. The en9c/.ggfxz 7hue)ihx 5d of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net p7ft +e*. qayw*pleo 2qositive charge, and sphere B is neutral. They are placed .*aoe 7pq+*lyf2 tewqnear each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively kyi9x -j/ww0scharged rod charge an electroscope positively?

  An originally neutral electroscope i6j(md mw:wn* ueugw15s briefly touched with a positively charged glass rod. The electroscopd6nw u ugj*w5e1:(w mme

  An originally neutral electroscope is grounded briefly while u 34-irwsb;j h *(hfle4*xmwca positively charged glass rod is held near it. Afte-*he44w;(sb*xu l jwh3rf imcr the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and t; me* jgi-wrist*-gz9 /d moq9he leaves separate. Then a negative object is brought near the electroscopg*g9;ezmjw9-tos -m/* ir q ide, but does not touch it. What happens to the leaves?

  A large negatively chargedpfm0/ gk1 ngvo*b ucuc b3skgv2+w., - object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops befor,m p v*b0 wgo. sbgkgfk1-c u+c2n3u/ve 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 constant fo bry2:xg e8e6as-)y$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. k i-v8xe p)* yjdsi3d- The first charge is larger in magnitude t ikx8vpei3j*y-dd) s- han the second charge.

  Sphere A carries a net charge and sphere Bz g00)zai+4g 0j iigwm is neutral. They are placed near each other on an insulated table. Which statement best describes the iig4j0 0+ zwa)gmiz0 gelectrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargesenl*zp5jbv l -g+ y(ydb-(k/h on both objects are doubled with no cha5-( *n l/vjpdyhgl( +yzb-bkenge in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive fov)h ijrbmj-6 -rces of F on each other. If the charges are separatmjv-)ib- rh6j ed by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hap1a8 eei bhouf8hxl(;dv*/ ta )pens 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 itda uil8) ha*xh;8obv e1/f e(s now equal to

  An electron and a proton a/7 oi5q ftdx9zre separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed n9x5t/f zi oq7dext to the first electron?

  An electron and a proton are si ;m-4pax8hcd eparated by a distance of 1.0 m. What happens to the magnitude of the force on the p c -i;m4dhx8afirst 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. Wd3z , aojl:2fgnw lrbd,2yl -/hat happens to the size of the force on the protf2la b3w:dr jl yld2n/ o-zg,,on if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second pt bvca a7ngp28fk q )q3fo:0l;oint 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 squarto kb7fq3v 0afg:l2ca 8;np)qe?

  A point charge of +Q is pla-z:-n drnqg,a4 h.jpxfa zc 4(ced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic f-.n4h,azr 4c fn:d(px -qzgajorce 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 not a k 7 +wj l*vjd,.cbehp1ljs oxmd-uv g((5cm(*vector?

  At twice the distance from gy2 ver,)ie*tdb* v lq ff43r8a point charge, the strength of the electric field

  Is it possible to have a zero electric fiel3b*e.kzn g5+vivt (az4 3 mi)pv5hoghd value between a negative and positive charge along th gv4)a v5ikg3t5phivbzm 3he+. o(*nze line joining the two charges?

  Is it possible to have a zero electr3 .plwv.uq4 vdic field value between two positive charges along thvpvl.q d .34wue line joining the two charges?

  Electric field lines near pj7as 8ymnk+0zsitive point charges

  The electric field shg/8-zgvuetv a ru4,mkq*j e6(own

  Can electric field lines intersect in freels1qp ;z ojwivy.*.igex6fl; f vl);- space?

  A solid block of metal in electrostati :j/r-e5rtvrz6p ob3rc equilibrium is placed in a uniform electric field. Give a statement concerning the elebj :vot rrre-z 5r63p/ctric field in the block's interior.

  If a solid metal sphere and a hollow metal spherw 7h- ;xeu4xs2jyh1jt e of equal diameters are each given the same charge, the el ;ty ehj1h47xuxsj-w2ectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tablez/pcu 8:tkl*fwzb 1g3 in a region where a uniform electric field is directed straight upward. What can k gczf:/bw1tz3p8*u l be said concerning the charge on the block's top surface?

  If a conductor is in kyi 7bf d/ s.d*;6laozelectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere h2z7 uycvyi95that is grounded. As compared to the case without the hollow sphere, the electrz yy2u 7vc5hi9ic field at a point directly above the hollow sphere has

State three properties of conductors in statimhy . 8wr kp:loitu2qr,d:54u81i v( 3rgflmr c equilibrium.

State Gauss's law.

  The charge carried by one-+lx6 ss,sggrt7bdzil )hb,9/kb px2 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 mm59 qpnl jc8.hC. How many more protons than electrons does this piecel n9.8jqmpc5h of plastic have?

  What is the charge on 1 kg k j vtg6sn4e/9: kg3xjof protons?

  An atomic nucleus ha5 1.ph1lu3(jqts bzioy((8uzx xvsq6s a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 11d7s5 r ,wjkor.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of w7sr5r o,k1 jdthe electric force between them?

  A 1.0-C charge is 15 m from a second chas 1suw;d3ljuro 4e c/f4a(x 6brge, and the force between them is 1.0 N. What is the magnitude of tjwb;/a xs1of( 3de u4l6s cu4rhe second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are the7g co6. qhh*op.5 jrkmy?

  The force between a bfnvy o9q f 8aribh18j881 vlso t*45d$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cmvmvfy . :m/.im apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwee y/v:m.m.fimv n them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firyjb j42n3o /9rf*uyoqst charge is a3rf noj 2*9yo/bjq4uyt 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 at the origin?

  Three point charges arsy9pvz 6s :ng6e placed on the x-axis. A charge 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 cypvn 6z g:69ssm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located ogj pgrx/5 3/sp9cz6 uat the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3. ouj3r6pgs/g5/zx c 9p00 mC 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 isrh-war 22/1 m1nfkdbbba;6dv placed at the center 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 magnmdw/rh1b12f;kr 6 nvaabb-2 ditude 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, aemwt.q4nvy2z1 48, f y8rsrh 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC24q, 1wr ayf8ezyrhsvt4n.8m charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0,6*titmbv7l .jc8,e ni 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the n tl6bc 8*e jvm7.tn,iiet force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equ ejm me,3gmjxda6 /xn*s,,g /vilateral triangle which measures 30 cm on a side. What is,me x3jge m*x,6v/n /gs aj,md the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separatedio12yg 6y6 2lbhy84z w rlyy.w by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge ofy6y li22o zgryyylh .1b46ww 8 -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a /rbf7w0xw5cfd9 dany-j)zv 2 +9.0-C charge is at x = 4.0 m. Where on the x-f0z7b n9da-5wr2yw)v j fdx c/axis can a third charge 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. Wr,;,ri*m *tu uwa2prs* ) wwqehere can a third positive charge +q be plac rsw ;m*et,pw 2 w,r)auuq**ried so that the force on it is zero?

  A copper penny has a mass ohgoj/fzd okgj8;*r/;p 1-hrl f 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 of gravity by the 8 81rlzho/tx+gdkn-f;i e ,oxattraction of a fixed proton some distance above it. How dhez i,;l8r8ox /o-gtn1x +fkfar above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threw bc ic/rg852qwjzknjusl:v;l 3 (et ma2.s28ads which are 30 cm long. Both are given identical charges, and tc cj(s5ajr v8n8ie:lm/k3l2g 2b .w;q2ws uzthe 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 char06 +kvx/hk 4/s8hxkzj:ttcw+vwuee i i8 -1gfge of +40e. What is the magnitude of the electric field at a distgkews-t1w0 6xfct8ij/:h4v+x e/ 8k hiuvz +kance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.5)nrdyg+h v2f+igmhu(3 :e nn)am)l +k 0 m from a 50.0-nC chargm n dg vhr:naf) n)gm(h+2+ 3lky+eiu)e?

  A 5.0-C charge is 10 m from a small tzg+k5qbs6-ukpfc/ y8 (zy ;he7ug lm1est charge. What is the magnitude of the elegzy z7u-8uyhq 5/s kmg kf6b(c1pe+l ;ctric field at the location of the test charge?

  A 5.0-C charge is 10 m from at leu:x266i n:ajb+bs small test charge. What is the direction of the el6 :jl:tanuebi+sxb2 6 ectric field?

  A 5.0-C charge is 10 m from a small test chaxzlirga /5+ci yp7 :l44cgmz +rge. What is the magnitude of the force experienced by a 1.0 nC 5m7+c gy r/z cl4:lpi+g4xzi acharge placed at the location of the test charge?

  Two point charges each hav/soa72g cc.wc0 h5sjt 8lkw w7coo7+me a value of 3.0 C and are separated by a distance of 4.7kct+7.ss7o l0ow j wmah 8co /2cgw5c0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed nb3ao5 k9b)ms at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at95mk anbso )b3 the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and k4 6urf p2f(dmiaa*j(a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field z( pjaidf( 2*mak4uf r6ero?

  Two point charges of +3.0 mC and -7.0 mC aru743x0,p+ayk :xw0wzybq g vh e placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fxuap4qwvh , ky3b w+zy0g:70 xield at the point midway between them?

  Three 3.0 mC charges are at the three corv rdxk/w ri*zf:7)xg9 - n9amgners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC cnr9rf-7/x:w*ka9 xzigg)d vm harge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m ond99ya+2r(y tbv+ bqb/ 5h eotz a side. Charges are placed at the corners of the square as follows: +4.0 mC at ((5hyv +b drbot9tyaz +2/9e bq0, 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 itwa:l4v,n 5ec2 7uu ;gvhmw su: is placed in a uniform electric field. What is the masa4emlw:g :5vnuuv;c u,h 7 w2gnitude of this electric field?

  A particle with a charge of 4.0 mC hasn/y 37r e9lo k:wmn/ow 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/C pzwd8*/0e4zqliw)* d wewx2scointing downward. What charge must be placed on the bawzc8l4e0z *wwwxd2 d qies)/* ll for it to be suspended?

  A foam ball of mass 0.150 g car eo)k5 b*dd,aqries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the5eobd dk ),*aq magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a char mp*j ng,*yt-cge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spmn*- pc,yt *jghere's surface?

  A metal sphere of radius 2.0 cm jyd9:)ww1 1 ktx 4rb7yw6 noxfcarries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of thew74 fnwyo1y6wtj9 ):rb 1xxdk sphere?