State the law of conservation of electric charge ;/ 1f xn ynvtrkt;kb:*ue1lz/.

  Is it possible for two negative chac aposlctcx o5;6.f/d 6y dr+:rges to attract each other?

  Is it possible for a positive and a negative charge to atyur;0k) fwy4953 tkdz tf:c 5xvd oaq)tract each other?

  A glass rod is rubbed with a piece of silk.ti2 /b7.gph cwnm0x0ya i))w p During the process the glass rod acqwnp)c / xw)t0bai2mgh0. y7ipuires a positive charge and the silk

  A proton carries a

  The model of the atom shoz0y24 l ;pw).w ,vtj )mvqslfxws a

  A neutral atom alway avb8t g,xq5tj7j*1sh s has

  An atom has more electrons than protons. y5y4w l-yj7rh ,xz hh)q :ox6o The atom is

  Materials in which the electrons are boun9y +ap) w4bvrxqvwy56 f7j,hpd very tightly to the nuclei are referred t yf 9, bpvpx+7rq)j a65yhwv4wo as

  Materials in which the electr..c pn4 my.gy 3ps3xexons are bound very loosely to the nuclei and can move about y.. yep.x43 cm3xngspfreely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. sf-1cc4qy9 oma vbi )3The end of the metala- yv4q )9cmbcf so31i bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, andv c- ,rfja ikzm,q, ,o;-yed.l sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which stafi-kv; ,q,r y ao.zc ,me,-ldjtement is correct?

  How can a negatively charged rod charge rupv ph-;,a( 83 b ty4ha7f3joeraou-an electroscope positively?

  An originally neutral electroscope9+pyowd4j4qru, )2/gjejb gr is briefly touched with a positively charged glass rod. The elec 2 u)yb4g,/jo9pr jedjr+g4wqtroscope

  An originally neutral electroscope is g (757jm/n7qqk+xnmcteu :w 2nv hxzo9rounded briefly while a positively charged glass rod n x:hv9(+7wu5 xnn7eq 7/m kjmoz t2cqis held near it. After the glass rod is removed, the electroscope

  A positive object touches a eb-:9jue; tz qneutral electroscope, and the leaves separate. Then a negative object is brought near the electroscopeb eq:;jz-9eut , but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulatedndlv2rrucht b x)b6l v6g,2swt.5 7j2 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 .b2 rxd tn2u6 w6vth c7l),2rs lbgv5jrolls 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 csp3i c b3ix;gj -2iap7onstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The bpy28d3 u;c0dyebx 1r first charge is larger in magnitude than1bp 23d8bcxd yer0yu ; the second charge.

  Sphere A carries a net charge and sphere B is neut.nuyvzoy-k.)8u ( yi5: j 05re nrswdzral. They are placed near each other on an insulated table. Which statement best describes the electrostatic for5 .d0kry ne:v w)iusj5uyzonz 8-( ry.ce between them?

  Two charged objects attrae40g1 9wgmju;4zn p pict each other with a certain force. If the charges on both objects are digeg0p4zu4;pjn m19w oubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive m(wom ip)v3. bforces of F on each other. If the charges are separated by a distance of d3mvm(b )po .iw/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What y 6r5w hv.vw +:e2pws7;kk xdbhappens to the force between them if one charge is doubled, the other charge is tripled, and the separation did :wb ykk6h. v2+5vwxw;es7r pstance 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. Wh(cq3bvs6tig a nq.86jw6b/fp7 aqvz1at happens to the magnitude of the force on the proton if a second electron is placed vpb6w873aa q(scgq.q/tv66 bjf1z ninext to the first electron?

  An electron and a protov0 c l7h6n.jysn are separated by a distance of 1.0 m. What happens to the magnitude of the fy0.cnvls 7h 6jorce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.ljk-l11hzq5/th;ph7b g0v, rb tjn f, 0 m. What happens to the size of the force 5ztbj0vrk,1-hj1fh ln lb7 qpht;/g, 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 square. Whe0tjtkj2-k: 1 /mzztqin a second point charge of -Q is placed at one of the square't1m/ q:jkzjt0 kt2zi-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 square?

  A point charge of +Q is placed at they9 zor,fla:+u 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 the magnitude of the force that acts on the center charge due to a r9a:z y+ o,uflthird charge of +Q placed at one of the other vertices?

  Which of the following is not ap 25;bh( eggud vector?

  At twice the distance from a point charge, tn+n3a.x*d 0l) uoo7 q(nlal zzhe strength of the electric field

  Is it possible to have a zero electric field value betweenl++pii 6wydx5 0jg-ll a negative and positive charge along the line joining txj lpi- y6+0l5lg+di whe two charges?

  Is it possible to have a zero electritfi:mrvmy3(6 2 7c fljc field value between two positive charges along the line joining the two chargevf2 tjfml :(c3r6 miy7s?

  Electric field lines near psitio5q77w zvsz;v ve point charges

  The electric field s9d*:gqfkgt.8 m p0kdrhown

  Can electric field lines intersect in free v- g5;gf9mzdp b)6ot mfr af*ufst,:2space?

  A solid block of metal in electrostatic equilibrium is placed c uxe1 eet- (1a54hxm ujn01vtu)9qmwin a uniform electric field. Give a statement concerning the electric field in t0 txxn415eu(jtq)euh muwe-11 9a mcvhe block's interior.

  If a solid metal spherej3l(ob4* /gic skvfqnt92e ,t and a hollow metal sphere of equal diameters are each given the same charge, the electr3, kgjqtoe2c4 (*n v9ltib f/sic field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform apr *po pimk ;bx98+l-electric field is directed straight upward. What can be said concerning the charge on the block's top s; mlpxrop+*98 a-bkip urface?

  If a conductor is in kk-n d)jka i.cbm-d (+electrostatic equilibrium near an electric charge

  A positive point charge is enclosed in4w coe+7.bmdb- 3/xp0j4tbohxo ax ;azf.8nc a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the x .h wpb0 xn-jd8cxt4 z4 .oooaa f+/bcme3b7;hollow sphere has

State three properties ew; d4j:nfpe8of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one ehdrk 6jlr *7-sayx.aj:0f -j ylectron 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. Hxyc;;f+s + 4iocvs:gtow many more protons than electrcxvgs+ ;co+tifs;:4 y ons does this piece of plastic have?

  What is the charge on 1 kg of ipdn/tcv7 9j6protons?

  An atomic nucleus hasel v/ ffqb ru3,hvwae/+k/4 cxok: e3v2fuq1. 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 1.5 cm, have charge values of 2.0 ain9x)*hh;ciq ebl 5l5nd -4.0 mC, respectively. What is the magniilb 5lh;n 5xqche*)i9tude of the electric force between them?

  A 1.0-C charge is 15 m(txnfq+m * u6t:;0w yycu cwr8 from a second charge, and the force between them is 1.0 N. What is the magnitude otw:0rq6+t cn(* 8wcyuymfx; u f the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. ly6-5v jm02jrno5fzvHow far apart are they?

  The force between a uln5dw.s) x6 b$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially o)rh-cn32 cz.f1 /n dkpxudz,2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8p3h zdof, )- dcnnxkr2uz/c.1 .0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. icn:vvojk 4bad t /)u9x*83bmThe 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 at the origibvb*v xn:tu9 3)dkc8ji /oa4mn?

  Three point charges are placed on the jur8rs*ej49mz adaw /*hs4- zx-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +a/zjmdzjw9 *er8- uhs s4a *r44.0 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 tk)6qdvw/ t a)are located at the following positions: Q1 = 2.00 mC at x = 1.0tq/v))wtd k6 a0 m; Q2 = 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 placexn-0,x1hacexu,a zs9fm7c)3g m .zce*0jcw gd at the center of a square, and a second point charge of aa -cx, m)ze3g9x w 0cmjsg*fz. e,n7huc 1x0c-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 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); Q3 = enzrziam1 tx4 mvjpvl .2 +)8-5.0 nC is at (0, 0). What is the magnitude of the net f)j2 48+xm i vzv1tlanmzr-p .eorce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nn1vf 9t* ejl)qC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nCtn1* 9lfej)vq charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaten 2kzv(f:csbkua. l 5+ral triangle which measures 30 cm on a side. What is the magb 2s:nafck.zu (lv5+knitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +a f-6rfj+b)g0yy v 1dwQ and +4Q, which are separated by 3.0 m. At what point, on a line b1)j6 -w0y+ygdbr ff avetween the two charges, would it be possible 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 -uktc g, (x0ildrf9d;is at x = 4.0 m. Where on the x-axis can a third(i;dru x9ck - 0lt,fgd charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is xc:lkfo j2/r 4placed at x = 2a. Where can a third positive charg lc 4ofj/2rx:ke +q be placed so that the force on it is zero?

  A copper penny has a 8 h62ow;u tlny.e-piymass 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 against the force of gravity p5exb5ao3ajh-cniacg ),: ft -iz7 .sby the attraction of a fixed proton some bx.ceatifp-c 5 ,:nosajg)i53 az-7hdistance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thsyh *8-x avyn5reads which are 30 cm long. Both -8s5 y yanxv*hare 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 has a charg. evg khr21wt a5uo.x;e of +40e. What is the magnitude of the electric field at a distance of x1t e.g2vo.wa ru;5hk 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance omi skc5;rz5 a+zpu9d8 ) i,flzf 1.50 m from a 50.0-nC chargezilz5s)dr+z f95 8k; p cua,mi?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the e; pegke86j md,lectric field at the location ;e p m,kj6eg8dof the test charge?

  A 5.0-C charge is 10 g b7sjvr7 gmcx/5 f7f5m from a small test charge. What is the direction of the electric fiesg7vf7r g7j/b5cx5mf ld?

  A 5.0-C charge is 10 mfli :aq(2-f6j q atn:: nhbul0 from a small test charge. What is the magnitude of the force experienced by a 1.0 nC q:- :a62fjni:flq(l0na utb hcharge placed at the location of the test charge?

  Two point charges each have a value of 3.0v/( ry 4iov(m9s0xjcc 6,3utp pcso- s C and are separated by a distance of 4.0 m. What is the electric field at a point/cj,s ( ( pv06roc-tmv osuys4picx93 midway between the two charges?

  A 5.0-mC charge is placds- hpybf)4d6ed 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 at the 3sd4y6- dfh )bp0 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mprfb 1)zff; a;C charge is placed at the 50 cm mark. At what poi);z1b;ff pr fant on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are **skwq+ka xm wbxs3el c/t:k:/ p: p5vplaced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at kvt:5 * +ks3qx/ w*pla pk:emx/cb s:wthe point midway between them?

  Three 3.0 mC charges are at the three corners of a square /hldb9zng;lvr.yx+oq t; z3 +of side 0.50 m. The last corner is occupied by a -3. z;d bl3v;tg o+9qxh./+lnrzy0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges aret :/tj7xp77 h1f,i dt/igpj dw placed at the corners of the squadxg1jji/ttp7tfhpd7 iw :/7, re 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 square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placep1 k8q7zizx7bd in a uniform electric field. What is the magnitude of thiq k1p7 7bzx8izs electric field?

  A particle with a charge of 4.0 mC has a ;z:.p.wd yuermass 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 lzw av05)zfbp ,m4ciu 4p ;zp*6000 N/C pointing dobpz5,z4 fwizvcm;uapp* 0 )l4wnward. What 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. The llt,r3+y+gc;zs;dp( pnw8 n eball is placed inside a uniform electric field, and is suspec z8n(l wy,s;prp+l+ ;tg dn3ended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radizpwn*u*-wq3 z7gi4vlsh zm . 7us 10 cm carries a charge of +2.0 mC. What is the magnitude of the electzpz h7 *zni7w3sgquwm*v l-.4ric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0h8x:l2j mfwa - cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the spj-l:2hm xfaw8 here?