State the law of conses; ;m*6xaipmt p+dtvs ahd;30rvation of electric charge.

  Is it possible for t )ygcepef gvos3 4zu5d p2:4x.wo negative charges to attract each other?

  Is it possible for a positive and a i 5pw:ys6 fb5wkrx( t-w -oab(negative charge to attract each other?

  A glass rod is rubbed withb*ohw+dl8( na 1n, mb9: dtvcy a piece of silk. During the process the glass rod acquires a positive charge votnl m c8dban 9+:yd( 1bwh*,and the silk

  A proton carries a

  The model of the atom*zd3ar v(k7tb shows a

  A neutral atom always cc/f. (,c*i a ghbn9hvl2/9lg jlnt5y has

  An atom has more electrons than protons. The atom c60j uqor5-i/k:lshi 0kn8hq is

  Materials in which the electrons are bound very tightly to the nuclei are referlm q7aa ( 5b cz1c4 hychdh36pld-9ix6red to ay5ld6iclax7 139bcd( -4hh 6h pqaczms

  Materials in which the electrons are b.rd6 km tvt2/kdkm6 f/ound very loosely to the nuclei and can move about freely within the material are referredf. rm2/t tkdk66vdk/m to as

  A negatively charged rod is brought near rk*b1)a. ub;mku-tl6ocm )m gone end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charged;6-gmbu1)k.bkl cmm )ou * art

  Sphere A carries a net positive charge, and sphere B is neun1pzqa+iq d5) ij1gs6tral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grou1p+zngd s)j6 qq a51iinded. Which statement is correct?

  How can a negatively charged rod charge an electroscolg+nhvmuqav m191( 8jpe positively?

  An originally neutral electroscope is brig/jyrdzdq zm );;5h 9fvh 54bnefly touched with a positively charged glass rod. The electroscop4;)fznjrd b5zd/v m9 g 5hyhq;e

  An originally neutral electroscope o2rghf 4,tcoth ;5p 5ois grounded briefly while a positively charged glass rod is poc;rtho, 2g5 4 hf5otheld near it. After the glass rod is removed, the electroscope

  A positive object touches tt,e1dp3xx+ ra neutral electroscope, and the leaves separate. Then a negative object is brought nttx p,e 1dx3+rear the electroscope, but does not touch it. What happens to the leaves?

  A large negatively ch2x,7 e6cf uzn3ndq kq2arged object is placed on an insulated 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 stop6n qzcqxke3 2 u2nf7,ds. 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 Comvr njyncyv15. j v,q0a71n s(ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a d)+ 9c:jmx zy1 3 uazoy3(cnwxjistance d. The first charge is larger in magnitude than t3z9azw )(yj yc :uxnoc1jmx+3 he second charge.

  Sphere A carries a net charge and sphere B vb*xi- l- 0yjxtp6wio, 9 q)na3ve8uyis neutral. They are placed near each other on an insulated table. Which statement best describes the elenjy lv9a w8u)x*ox0viq-et3 -py 6,bictrostatic force between them?

  Two charged objects attract each other withg87 esf4f-exqy ol 67h a certain force. If the charges on both objects are doubleef g-eh y4q77sxl86o fd with no change in separation, the force between them

  Two charges are separated by a distaj lr86vv :h4u x.w/tmmnce d and exert mutual attractive forces of F on each othe.jm:mvu4 8wh6 /tlrvxr. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eac bp-1mb3* uaqgh other with a force F. What happens to the force -1 pb 3aqmu*bgbetween 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 separated by a qf2h :t d,k/esdistance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first ele2q/ ,tsf dh:ekctron?

  An electron and a proton are separated by a ls* gg9pnao pxp9 d(.(distance of 1.0 m. What happens to the magnitude of the force on the first electron if a se9 n.gxds*pap(p g(l9o cond electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What ham) lb bvj*yxtwov.u2.wc zv42 yvz-24ppens to the size of the force on the proton if the electron is moved 0.50 m closer t.l- t4u.*y) 2w ymj4bvz v22 wovzcvxbo the proton?

  A point charge of +Q is placed at the center of a square.0fy,xv0p,g sly:oc( qtdj/ c0+3urq t 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 ylr q:,/xy00q( ujtvsp0 3 coctgdf, +magnitude of the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed a c9(cc3ro l8xml2h ;qb5byb0c t 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 cb bhlq8cbyx3c m9lro; (0c25N 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 x9(m6*b sr rayxr4kzc5ml /f,a vector?

  At twice the distance from a point chargw3(b3 / q -6syfwh pfxl8idcb4k0)at le, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and po(+aw ah.f-yp g2zr0a ;zmmhcl. m,oc 2sitive charge along the lzg.y+ma2r2h;hmpo c -lzfw(0,m.ca a ine joining the two charges?

  Is it possible to have a zero electric field value beqzg.fznk/lh+/ /t nj;tween two positive charges along the line joi/j gnfh/n+.q l/z; kztning the two charges?

  Electric field lines near xd ))nixw u (ecdv85s-(u2 icw. frg*mpsitive point charges

  The electric field shoei;rwl k4a)zdjx:z.*j5tf ( gwn

  Can electric field lines intersect in free spasapcpbn)s 28 ,dp g(n4ce?

  A solid block of metal in electrostatic equilibrium 04w6: yc0ccshmxtfv63f+fat8fl zl. is placed in a uniform electric field. Give a statement cov6a sfct8w46y ffx 0 c:l hmt0+3flc.zncerning the electric field in the block's interior.

  If a solid metal sphere ae(nd:x5 j9b* )h7zq6yxhfy6j9itr a 3 w/ybilnd a hollow metal sphere of equal diameters are each given the same charge, thejz)y/* r9h na :l d76i b 6ytwjqi(39exxyfhb5 electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woodeur fwl6.owuq *jw-+h7n table in a region where a uniform electric field is directedw-rh+l 7ju o*6wqu.wf straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric mzckjq :euw2 d(g 3vc2h5 o-;acharge

  A positive point charge is enclosed in a hodd 4il,8g fshplwn 59g +7n.oillow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above h85+ildglo,i.n fpw7sdn4 9gthe hollow sphere has

State three properties of conductor 4a9p51tzczg zs in static equilibrium.

State Gauss's law.

  The charge carried by one eledwgzqi9/vqdp +s).* v ctron 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. How many more prc )h)9 4v4deqn9mwu3nys; jbk h8l gsma1*3diotons than electrons does thisakhi1 u*y4lc; 3d )e qjhs9)38nbsndw49gm m v piece of plastic have?

  What is the charge on 1 kg of protons/mm3jgrt(3i 8.m mwfk5x:f x x5 ug*ua?

  An atomic nucleus has ahrrl c/6 zp2*r0c li(cdqj3 m1 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 and kcu xxr+oiy- f 7d7ol5s2zp(8-4.0 mC, respectivelydfxl+2k 8 uo-(poc7xz isr y57. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, andn wh 9dkusng3m7z6nsu/.22s w the force between them is 1.0 N. Wh2.us2dwu 6m7nknsg hswz9n/3 at is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart at.lsmn81se sh4jk5c,owwu*2 re they?

  The force between a ur w sk7uy,d93 *9vkrp$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apar -68ozo k ei*ra,-z vxd(f5uwtt, experience a 1.0-N force. If they are moved toio 6uzka(ozx5*wt-d 8 fe,vr - a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the7by q/5w39*kpdkf f6xckp4 ,rm 6mb:ck*gwor x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third cm ,oq*k6x*79 d4ky/p3kkwbgcf m6w5fbpr :ris 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. p jaj(i4vk)ix6 y1vc- ucc 35mA 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 cm mark. What are the magnitude and direction of the electrostatic force which acts oc 1(ua5j3 cj4cik xp)6mv- viyn the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.0zf)7+)wds ajd0 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 magnitude of the force on the 3.00-mC cj7dwz)a )sf+d harge?

  A point charge of +Q is placed at the center4ezt,t 5ry7:uhczqc+ tb 76zr 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. :z67zyte +5 tt4,hcrrbq7u czWhat 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 ckglw7 vgr8pgjm;h7r/ u)bh6 ka)l1 3m); Q3 = 5.0 nC is at (0, 0). Whah u)71lg avc pr6bk;8kmh)/lg3 7grwjt 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, 0.10 m); 0d -n isp ykfsviat,,0.ex 2q:Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the :x.s ne qaf20s,kvity,d -0ip 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an ebicrn/9gia; 71vv mk; quilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the ch mgb1c;9vi7irn ;ka/v arges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what poij)0ed *i, y :/pm xvm+u3tvm jyc99inmnt, on a line between the two charges, would it be possible to place a charge of -Q 0me m3*uvvy9x/nmd tjm pj+:),i9 iycsuch that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at toq a c6k 9ao8cauj//cdn05 ;ihhe origin and a +9.0-C charge is at x = 4.0 m. Where on thec 5/ki/6no0dacqah co;9 8jua x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and m m9s4cifq7k 9jdx4, ncharge -q is placed at x = 2a. Where can a third positive chn4xkmc fd i97 qjms,49arge +q be placed so that the force on it is zero?

  A copper penny has a maymuycead) 7 opk9;e/ 3ss 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 by the attractkk,r k8w9, +aq1qigq wion of a fixed pkqr qk,ga+k1,9 w 8wiqroton 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 nonc-ofi)b t0z6hy o3qvp z/:ycp 6onducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forch3 ) qo0v: 66o pytyb/-pfzzices 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 +40e. What is the magnitude of the electric fj oyw2d4x u(qhr xgv+a 9es70)iaz 6)rield at a dg72 9u x+( e4ov0dwi sqzrxj)hyra 6a)istance of 1.0 m from the nucleus?

  What are the magnitude ak3x/04y lxdps* juid/nd direction of the electric field at a distance of 1.50 m up* d4j/i s/xk0y3d xlfrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of zbx2a4r95t /s sicio2the el/9oaicx sz b i24ts25rectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dishn)(g 2ixymgrf. .8urection of the e n 8fxmuh2.s r)gi(gy.lectric field?

  A 5.0-C charge is 10 m frpgi4-z4)g. kcn/1 xd hc f5ogvom a small test charge. What is the magnitude of the force experiencedf5n pz-) i. okg1gcd4gv4 /xch by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value 4tj :xrd+o ju4h6lb.x of 3.0 C and are separated by a distance of 4.0 m. Whatur o4x.+dlj 6hxjb4t: is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm ma57c0 pd7;ek(imcxe n ark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm(emac5kp ;07 dx7e cin mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 z4g p2 fmj/;cxmC charge is placed at the 50 cm mark. At what point on c fp 2;/mjgx4za line joining the two charges is the electric field zero?

  Two point charges of +3.0 ;5yqx(jd/ynq2o/se k mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between thy5k;j (/ oq2nd/ xsqeyem?

  Three 3.0 mC charges are at the three cornersri:hu-tq c; g3ni ihm9zt3-j 4 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 t i i -g3;r-huth:m n34iqj9zcthe square.

  Consider a square whkq -qmr 1m:+exich is 1.0 m on a side. Charges are placed 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 square's cent + m-erkx:mqq1er?

  A force of 10 N acts on a charge of 5.0 mC when it is place;s 1t*2k7 uiml1crb wbd in a uniform electric field. What is the mai21lbbws;km r 1*c t7ugnitude of this electric field?

  A particle with a charge of dvl3fg8, se 17mpb h t*i5zfz54.0 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 pl;y+ ;.sllt u *m2kslz;b.f ldaaced in an electric field of 6000 N/C pointing downwar fts;+y lkudl l.bma*;l.zs;2d. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a cha4avil9 rh 33z:vseb:c rge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspeel94:sb viac :h 3v3zrnded against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is n rvk5 nsi5 +.ymk yn*35a)ltxthe magnitude of the electric field 5.0 5iym.n5*rk+ lk5x3aynns tv) cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries+)npq2rcff 2iw5f ;wu: mgm 0zlj p17g a charge of 3.0 mC. What is the electric field 6.0 cm from thewmu 0g2ppi lf;:+q)j n fc1wz 7m2r5fg center of the sphere?