State the law of conservationr,/ +gmeied;3z)2j 1jrhkdyl of electric charge.

  Is it possible for tcnf.c)xh. a x3wo negative charges to attract each other?

  Is it possible for a poitha.qakkz1m+2 k-j 0-toz2csitive and a negative charge to attract each other?

  A glass rod is rubbed wit (x6a6mw84olbs) m gfwh a piece of silk. During the process the glass rod acquires a positive charge and the silk(lg6)fm ws6b a o4mwx8

  A proton carries a

  The model of the atom o:hbgxn+/p 6z shows a

  A neutral atom always jidadx+p7-j 2 has

  An atom has more electrons thaxftfzsrzu/ 5u ,8 /t5en protons. The atom is

  Materials in which the electronsn ;l45.xce9wl-trxs7g5k8 m *t u.5cp pyfkc m are bound very tightly to the nuclei are referredpwpy *8- 5emr.cm5n7tc; c.xl ul9k4 xskg5t f to as

  Materials in which the electrons are bound very loosely to the nuclei and can b ;f ,:0ictnhmmove about freely within the material are referred hmfi: ,bc0;ntto as

  A negatively charged rod is ba+ jk.cfz7.i urought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod zjfck +iu.a.7 will be charged

  Sphere A carries a net positive charge, and sphere B is :./dh; 1kf9wsirl)fix6zgrl f, vy1zneutral. They are placed near each other on an insulated table. Sphel1grz 1srx.;h)yivkf, zi6f/w:l 9f dre B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an eleco ,pksivfd , 7o,+xt*qtroscope positively?

  An originally neutral electroscope is briefly touched with a positiv 9j:oc/f wmyt(ely charged glass rodytmw (9f joc/:. The electroscope

  An originally neutral electroscope is grounded briefly while ec07h y yfm+6va positively charged glass rod is held near it. After the glass rod is removed, the yy6h+7evf0 mc electroscope

  A positive object touches a neutral electroscope 81pq7.brwrp j- .dwrz, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens -w7przjr8r1 bp . qdw.to the leaves?

  A large negatively charged object is placed on an insulated table.e( ,l*sg y(,qidsd vx*;s: ehf 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, bu* gfhd;evqxi(*, dls ys(s,e:t 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 Coulkr zh*yl:u( q6omb constant $k$, which appears in Coulomb's law?

  Two charged objects agu/ 5o:umhl h.1l2quuqr6q z)6q tc/ are separated by a distance d. The first charge is larger in magnitude thanu2/t. lr6 uq/uo zhh5q1ag q6c ):lmqu the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are p j kaiaa.h d7x49joxn1i2,ehksf/ 7y-laced near each other on an insulated table. Which statement best describes the electrostatic force behka sjfah7odj21kyx a9,/4n e-. x7ii tween them?

  Two charged objects attract each other with a certain h9sahp;x0 as /force. If the charges on both objects are doubled with no change in separation, tha/;0phx sh 9sae force between them

  Two charges are separated by a distafznj)u(. *pnence d and exert mutual attractive forces of F on each other. If the charges are separatep*.fzjn) ne(ud by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the fh6 rqd1u ;m+doickjdf+/ -xy(orce between them if one charge is doubled, theoj c6d;u+fyh -x m+d qki(1rd/ 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 distance ,p4 m bs6(pfrsof 1.0 m. What happens to the magnitude of pbp ,f6mrss4 (the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a dig1jw(*,t) ns ) grcmxistance of 1.0 m. What happens to the magnitudexgri)m, gctn)w( j1s * of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separa/t y4njb-tu 6;op5x noted by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0. onpb4t ynjo6/5-t;xu 50 m closer to the proton?

  A point charge of +Q t+.g yrx(j3ibrpsw/:5 smk m+:c1cul is placed at 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 the positive charge at the center of th imgymluc+xsc:5 + .s b/kwr(jr31:tpe square?

  A point charge of +Q is placed at the centry--yv dlo*t)d5p:di l oid 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 magnity) di o tl:5dpy*--dlvude 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,ma9q yii4kjo6/ vw/s is not a vector?

  At twice the distance from a point charge, the strength of the electric fieldoni8yc ic) epjk,)9(rz sfm;.

  Is it possible to have a zero electric field value between a negative and pos4 b4yzb tfpmspns(v .//4 ;kwtvnz7) zitive charge along the line joining )f4 btypwv4( zzs /;n7/b t4p .mnzsvkthe two charges?

  Is it possible to have a zero emd-r2d5h z+yxlectric field value between two positive charges along the linedm-r d+y5z2x h joining the two charges?

  Electric field lines near psitive point +rwa)tuw tmg,w27 v h/charges

  The electric field sho) eqrz9,jtq8z5no4k uz ofkp3 xx(26 fwn

  Can electric field lines intersect1zfap g+59y7pu vjt -x in free space?

  A solid block of metal in electrostatic equilibrium is placed inzq )q9vf0 hl:u a uniform electric field. Give a statement concerni 9)u:0ql fvqzhng the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diametersewdk*4a) -tx9jlbg6 6 e nri1i are each given the same charge, the electric field (E) midway betweeni61dir) l-j9 t6*4wab exnegk the center and the surface is

  A cubic block of aluminum rests on a wooden t9 1qw ze1 bl0*3schdtoable in a region where a uniform electric field is directed straight up10 l13*z9edwh obs tcqward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an x x z;iil:) (wzkuet. cx5. dxqco)j76gngu78electric charge

  A positive point charge is enclosed in a hollow metallic sphere aw9 op, : ro/)5ti t5xh5s(ug3fv svdkthat is grounded. As compared to the case without the hollow sphere, the ex(rtdf5p av:k sso 9u t5g/h5i,vwo 3)lectric field at a point directly above the hollow sphere has

State three properties of conductors in sta4jwzq7;yfcs d.je.+z+ ( zeywtic equilibrium.

State Gauss's law.

  The charge carried by one electr j) wrmc2jv21pon 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 netbk-b-.x4 gno+++ltctaa y.yt charge of +2.00 mC. How many more protons than electrons does this piece a++byby-ltx o4t k. a-.tn+ cgof plastic have?

  What is the charge on 1 kg of pch p8ci*/y fl9iz5wz z7 q+s3mrotons?

  An atomic nucleus has)i- eu- 7ry.d:mxxjozya m5jj9u;i/c 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 1va+*zi-+kn d v*wtes1.5 cm, have charge values of 2.0 and -4.0 mC, respecti z a*+vtvewi1+dskn*-vely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 tar 46z8oj +d(xs,ydz ,g;cbfN. What is the magnitude of the second cha(4 + dg,zzc b6frsdy8xj,t;oarge?

  Two 1.0-C charges have a4p v;jguer9r( force between them of 1.0 N. How far apart are they?

  The force between a uo)90uzg 7jh o$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experkgmg)x0:3 a0msxvk:qience a 1.0-N force. If they are moved to a new separation of :g avmxs)qk k3mg0:x08.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fi vxg6je5bg bc/v:4dw 5rst charge is at the origi/5 vg g:wbx4vj 6bc5edn, 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 are placed on the x-axis. A charge of +2.0 mC -px2 h x;n.cmpis placed at the origin, -2.0 m C to the ri;-cm h.p nxxp2ght 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 charge at the origin?

  Three point charges are located at theituulvpl g,lb6y 6;9+ following positions: Q1 = 2.00 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 ill+ p6bu,g;yv9 6tul 3.00-mC charge?

  A point charge of +Q is plac.w wmab: 7,gc,guuz(sed 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 magnitude of the force that acts on the centeuz ,.b ag ,mwg:suw7(cr charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m,*wa)sd r4t9ee 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 ne w s*d4reea9)tt 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); Qu,y h+68yi cva*k jv:a3 = 5.0 nC is at (0, 0). What is the direction of ta u6: *yvvj+ki8c ahy,he net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed -qyx-bft3/ mjat the vertices of an equilateral triangle which measures 30 cm on a side.yx3/-fj-m tqb What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are7m5oq7*xp*u3z h3mp,ub8ljas i n*sf separated by 3.0 m. At what point, on a line between the two charges, would it be pos*o3*j,n8 smu 3hz7 u5iamxlp7pfqb *ssible 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 origifa:8u7w kvqd 5n 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 nwu df78ka v:5qet force on it is zero?

  Charge +2q is placedgo5nq1k vse/1 at the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force ogvq/eonk 51s 1n it is zero?

  A copper penny has a mass of 3.0 g. A total w93um/ i0ykgn 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 attraction of a fixed,j.4cs)jc8xsjqae t ) proton some distance above it. How far above thxcs)e4a.t sjqjc 8 ),je electron is the proton?

  Two 0.20-g metal spheres are hung from a 6opry1q7 yr5jcommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the yr6yr5 o1jp q7electrostatic 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 amwi(h-8 w ta5x charge of +40e. What is the magnitude of the electric field at a distance of 1.0w ti( -m8x5wah m from the nucleus?

  What are the magnitude and directionk;xuzk2b 3 e4x of the electric field at a distance of 1.50 m from a 50.0;x k2u eb3k4zx-nC charge?

  A 5.0-C charge is 10 m from a small test chargex wz3ty-x (hjm*;l h3,u.jcdphcm,n 1. What is the magnitude of the elecm,j ct*-z nul,3j p.hhc;xxyh(d3wm1 tric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is th+ mx j37on,keu,0 gjuke direction of the electric fig30unkj j+,,muek x7 oeld?

  A 5.0-C charge is 10 m from a small, 2jv2g; n79 y v pc:9e/x,mbiojvrcpe test charge. What is the magnitude of the force expic ,e rgv bjx:72v2mnp9v,ypj/e; oc9erienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated byj;88h 1 ghka7akslok0 a distance of 4.0 m. What isohk l;87skjhg1 80a ka the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at thnfk;g e 1zg/w,e 0 cm mark of a meter stick and a -4.0 mC charge is;wz/1 kfg,en g placed at the 50 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 ;6ipwc8qq pjmeezz(s4mw1 * ) stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electc;ei)(wspqj16 8qp*z4zmmw eric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and+6sj zzu i(/. zcmyuk: x = 0.20 m. What is the magnitude of the electric field at the point midwayizsc.(k 6 uyz+umjz/ : between them?

  Three 3.0 mC charges are at the three corners of a sq hpns*z,3(p fmuare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field afmhsp( p3*, znt the center of the square.

  Consider a square whiw w8x1 j 6gs.y(cd,xltch 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 8s,(w1y .dw6gxt jlcx(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 unifohk xf7 f.2):;fmh/skwwi z lr/dzd-g*rm electric field. What is the magnitude of thws-xwrgk;m z. f)d72fhi:fzd*/k/lhis electric field?

  A particle with a charge of 4.0 mC has a 1y9jqs 9ttjx+e+jsm3 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 ankagnm .jgm*o ;.3kyn- electric field of 6000 N/C pointing downward. mm *..ko;ggk -nj3nayWhat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charg.iu9s t0cw 7jr2mqh d;6/ muebe of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and .ur 7hi;qd9j6c stb2muew /m0direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the 0in :1rydf) jfmagnitude of jdfr1n :i)0yf the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the el+, ai-mnq*y y/1ax wftectric field 6.0 cm fromiy-*n ,wt+xaaqy 1m/f the center of the sphere?