State the law of conservation of lrdn1b.l-q;cs;emm: 6b2u i ur-zqny )9oas:electric charge.

  Is it possible for two negative charges to at+9a) .uq4 vn 2fkgkj85hh can+o) sfjbtract each other?

  Is it possible for a positive vzl fjt1.bg6c8d++icb + / mit31s sxzand a negative charge to attract each other?

  A glass rod is rubbed with a piece of 2p3jq myc8 4 1gbfd(mtsilk. During the process the glass rod acquires a positiv2 t(pjg4 fydm3bc81q me charge and the silk

  A proton carries a

  The model of the atom shows a, o:p*a pr6 rj-n8m8wh3:fczbae3 w:/ tlxjtx

  A neutral atom alway.kc-; zw6qedtt) r( *wjpfu.ds has

  An atom has more electrons tha u,i 5y(s2smqcn protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei5mz6n a9 (..z)g)ze tcgop cki are referred to iz9z) ..)6cetn gp5(zg co kmaas

  Materials in which the electrons are bound very loosely to the nuclei anlt s8h,rh gr ugf8;79hd can move about freely within the material are referred ,;hgstr 87hlu89gr hf to as

  A negatively charged rod is brought near one end of jkw7w 3k//ee van uncharged metal bar. The end of the metal/ek7w3 w/ evjk bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They azfv8i)f;.hmm,o7 j0 v 2wrzwfre placed near each other on an insulated table. Sphere B is briefly touched with a wi,zvhzmw0foj w;vm8 i7).2 rffre that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroqnp/d*ucgp4v by km6( /x ,*txscope positively?

  An originally neutral electroscope iz4e g 5 6ya)0tt72jx6jpvouzt s briefly touched with a positively charged glass rod. The e a567uj6tgoytv0jepzx)z t 24lectroscope

  An originally neutral electroscope is grourq- qp imw+uwc*y3bn:ll/ w9v*/ pu .bnded briefly while a positively charged glasw ulciy p vb/9ulmnq +*3w/b :p.*wqr-s rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches *qno0k.obbl1 3 c5 dvbz+z5tba neutral electroscope, and the leaves separate. Then a negative objed *q 0olbbb ct1b+3z5zon5.kvct is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insufqou.0z3mfp6e : to/ylated table. A neutral 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 time does either ball touch the negfmfz /pt6eu 30o:yo .qative object. What is the final charge on each ball?

  Charge is

  What are the units of tfa8)4mynotbz784y up he Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sra4az2dd j+5p8fgl t,evr /,b mk9e1k eparated by a distance d. The first charge is larger in magnitude than the second chargea,rdtb,jzva 581eg 4 9pd/kmkrl2 ef+ .

  Sphere A carries a net charge and sphere B is neutral. Theyhoq.8y,x+ df: dqiq +y are placed near each other on an insulated table. Which statement best describes the elec 8dhqy.:o +f, qdq+yxitrostatic force between them?

  Two charged objects attract each other with a certain force. If the c yc 7 amgs 2k8a0j.35mff1jjotharges on both objects are doubled with no change in separation, the force between tf a0cj.gof531jt 8m7k j smy2ahem

  Two charges are separated bym s8x zo mo8bjlq*6.m3 a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are*mz6 bmjmqx.ol38 8os the new mutual forces?

  Two charged objects attract each other with a force F. What ha(g)ofirae 2c: u-/omkppens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between theio(e 2g/cirm f-)u ka:or 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. What happens tmqw/9 ;wh1 sgro the magnitude of the force on the proton if a second elecw rgsmq9h;w 1/tron is placed next to the first electron?

  An electron and a proton are separated by azp,5k6 r9ixs6ky (qqs distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second sy9qz,5pxsk6 rik( 6 qelectron is placed next to the proton?

  An electron and a prots r6h4hmv6 s,y;jpak/bc6 gj no4t(g1 on are separated by a distance of 1.0 m. What happens to the size of the force on the proton ifna mv( tc46h4 s,gsr6/bh16jjgoky ;p the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed a/+1i9etxv nx ru*27/ ql(s2g dswz 0rwbprj -st the center of a square. 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 iw/ g2 l/97v(rdequ0ns x -s1zrx j2*rb s+wtpthe positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of ro1eej7l) ww2enw8/n an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertio17e n rnw /ew)elwj28ces, 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 following is not a vector?/f5 (p nry2ff5i0ybe s

  At twice the distance 28pts vi -+5ls 9jyz;heyiny ;from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between58h6*a-b 9rm .; ihj j zkb+4vfw(fw-zquz hcq a negative and positive charge along the b.* z8kwfvrj zu9-ca 64 +hqqjhz-5w(m bfi h;line joining the two charges?

  Is it possible to have a ze / h5d+v(gv9mhzr2h3zdkc4 cn ro electric field value between two positive charges along the line joinin2r /ck(hm9dcv+nzvhzh3d 5g4 g the two charges?

  Electric field lines near psitive point tkn2;li)p;, ciob g4 scharges

  The electric field shownya2ycf +s vi 982w we+rkxd(l8

  Can electric field lines intersect sfak mc6,zbxv*n6o, ) in free space?

  A solid block of metal in electrostatic equilibrium is placed in aj. yia/q)gpq*:v u a5f uniform electric field. Give a statement concerning the electric field in the block)5a.vufqpyg :j/ qi* a's interior.

  If a solid metal sphere and a hollow metal sphere*w/ d9,vk wet;d e3j1rn;khtz of equal diameters are each given the same charge, the elre;3wkh* 1nj;dwd/tze ,kvt9ectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tablei9 n 2f5fa+yr.dv.zv o in a region where a uniform electric field is directed straight upward. Whfv vo.n5d.2fiaz9+ryat can be said concerning the charge on the block's top surface?

  If a conductor is in electrost4hp ygj0r pl*7wa zk)1atic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic r5hkt .4qfqy0 sphere that is grounded. As compared to the case without the hollow sphere, the electric t5kqf q0r h4y.field at a point directly above the hollow sphere has

State three propertieyf8/ q yn1hsih*8 4oazs of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron iu-pv*3- ;dp9bsh 1uabyyj,e+ / olaqj s $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +qe9*,ey mr kdyz(;6ck2.00 mC. How many more protons than electrons does this pie 6cy rd,yq kk(ezme;9*ce of plastic have?

  What is the charge on 17nu) r ;jp6vlo kg of protons?

  An atomic nucleus has a charge o1iw5b vdn.7rqq qzh)*f $+40e$. 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 k5-h9fr-nmcr )hagnrjmpct. 8gb. , (b (zf4amC, respectively. What is the magnitude of the electric force between thf-zt,k)h-c mrggman4fb .(h5rb cp(j.ra n8 9em?

  A 1.0-C charge is 15 m frcq ds47lmqz1aog6 + s(om a second charge, and the force between them is 1.0 N. What is the magnitude of th mszdsg4l61o+ a qcq(7e second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are h9s:*v uq;o;obcw .o clul+z)they?

  The force between a 5wqfp g7a7ip348y lkts g ck,*yqi2k0$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart7jh1vjykh2e sg4n eju 80)/ ca, experience a 1.0-N force. If they are moved to a new separatiogjh aj)k 20/1 uv4eeynsh c78jn of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed:y,0oi sg5akw 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 y :aikg0,w5osmark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are0b9 a-kbu8 (+ju wqles 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 s8ej9-u lu(ba+kbqw 0 100 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 1f(8-;m cvcmh28fzg y gfrh0y: Q1 = 2.00 mC at x = 1.00 m; Q2 =1frf( yfc80hm zgg-h cv8y2m; 3.00 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 is placed at the5i5 -eaben+1c zm/u aeuci+9hpn vo., 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 onz-eem,ai i nn5ouc u/p +ca5.e 9vh+b1 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 at9yhkr.-kkmvg-j) kw 2 (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wh m)k r- 2hwy.k-gjv9kkat is the 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 at (0, 0.y6v,q db h9gb*10 m); Q3 = 5.0 nC is at (0, 0). What is thegdbbq9 v6y*h, direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices ol :hh24f1qtpk3wqn y. f an equilateral triakn: th. w412fyh lqp3qngle which measures 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 separated by 3.0 m. At what poio26)mf0 ymri qnt, on a line between the two charges, would it be possible to place a charge of -Q such th mq)m ryi20of6at the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin andy) 7oj) u)rhec a +9.0-C charge is at x = 4.0 m. Where on t7o)jche))yu r he x-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. Whe+myxy:j6 gav,hp r v.)re can my6r.g ,):yh xa v+vpja third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total o(e ldt g 90g(qknoq+-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 forcewn*e : d+ (pdqfus6v*s of gravity by the attraction of a fixedsw +d(fendv6**u: qsp proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by 620af ie gw4fsnonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads2 4fs60eawifg is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of tna za4 :egdn-g75v:5zz oupd,*xih9bhe electric fidh vuap n9ag,- :zdzz*b xi45on7ge5:eld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at uqjm) lt 8k/mu. -pme5a distance of 1.50 m from a 50.0l-pq/8 k.ue5mm)uj tm-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitzjo3z(zg:, tmude of the electric field 3, mtzjz:zo(gat the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whi tqy oq(d.v11m0.h mmat is the direction of the elec1vo .dyqt.m im(q 0mh1tric field?

  A 5.0-C charge is 10 m from a small test chac9 spk0 yryc5vjs(i- qlm q99+rge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test char lk cyy+9m9sji qqvrc0-p5( s9ge?

  Two point charges each have a value of 3.0 C and are separ4: 4b ejzj qtfc 6ij r3jg+;nmm;p7o1aated by a distance of 4.0 m. What is the electric field at a point mi1bzjqjic r 436fat me+7j:m ogn;p ;j4dway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick 8n a49w9yvjlmiz.,w n5*b6sz q/anzxand a -4.0 mC charge is placed at 6w9qm5nzzawx 4v.9bn n*y alj,8 i/zsthe 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cmwnk,ojn3az/v+u ; gzg8 2zhas)31 bt m mark of a meter stick and a -4.0 mC charge is placed at the zgabkvz 8 ,tjz 1wn23/mhn+)3o uasg;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./zp7mi*g j vx6.v9ayf0 mC are placed at x = 0 and x = 0.20 m. What is the pjz6g/v7vxam 9y *i.f magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three co:; mijw/t wx /om-2fxqrners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC wiqx o tm2;mf/w:- x/jcharge. 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 thns w 4d.1pt1je2 8xhbhe 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 a.t 12xhws84e1dhbnpj t (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 oae(zj7b a;)j in a uniform electric field. What is the magnitude of thi)bajoz je(7 a;s electric field?

  A particle with a charge of 4.0 mC has a mass lu0ad+:)pvs: i rjg+-mq .rwxof $5.0 \times 10^{-3} \; kg$. 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 el+nz 0*ubvsolz9 h urqv(ctp,l)t0 r8 4ectric field of 6000 N/C pointing downward. What charge must be placed on the ball for it (zzt orl 0*tv 04ruvls)+buq cp8h9, nto be suspended?

  A foam ball of mass 0.150 gfx2d(5ng yc7ue 3d x/b carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gr g27(5nx xyecbd/du f3avity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm card;(2 vugr)gyqf(a hv+.udo v1 ries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surd(dvqru (hg. u ;2)1vfavg o+yface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wwv0u plyvj22kf)d6 d5 hat is the electric field 6.0 cm from thew v2ud0 j65yvkf)pld2 center of the sphere?