State the law of conseief etro0 e 9eeq0a3/,rvation of electric charge.

  Is it possible for two negative charges to attract eac ,speg3y 1-fh pm,yq ;snfb0.ow-hpy)h other?

  Is it possible for a posi4un*8p8zvj:3qy5cm u gztkb :tive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durin b2u wz:lqtkb61i/6 mig the process the glass rod acquires a positive chargekz /u:wi 2tib1qml66b and the silk

  A proton carries a

  The model of the atom shows a/joglym7il:fa )+bn 7

  A neutral atom alwayn,c7.-0guy px07o rp2dn mi )pqp7qm(dg;qd t s has

  An atom has more electrons than protons. Themx6.tkguzs* lp; hoji1n8,x* atom is

  Materials in which the electron k.clg1ucl*l /s are bound very tightly to the nuclei are referredcl1 /gll c.*uk to as

  Materials in which the electrons are bound very ll .nq-u*uv:5rbcnq,sg ey93hoosely to the nuclei and can move about freely within the materc.y u3q nq59e ,gnluhr s:v*b-ial are referred to as

  A negatively charged rod is brought near one end of an uncharged mel2*giouwds9,hu *f ; vvui)q9tal bar. The end of the metal bar farthest from the charg*su9oduwi,igv2lq *9hv)f u ; ed rod will be charged

  Sphere A carries a nhga 4bhft: b36et positive charge, and 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 sta4th 6bba:hfg3tement is correct?

  How can a negatively charged rod charge an el1hy3kzy(c k*nectroscope positively?

  An originally neutral electroscope is briefly touck2qh 8p2h)pc:j( c bwxhed with a positively charged glass rod. The elec(q :jcpc p k2wxhh)82btroscope

  An originally neutral electroscope is gr m5dkukx:k/)oy 3--kdgas w1 aounded briefly while a positively charged glass rod is held near it. Afk5dus:- 3xo kgd)-ky1/awka m ter the glass rod is removed, the electroscope

  A positive object to0 xycf-nj+et 1uches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the nx+ftcje1 y0-leaves?

  A large negatively charged object is placed on an insulated tabju7kjd2ts br2j /9 sxd:7nc xe).b -jrle. A neutral metallic ball rollsj7d x:u2jjcsn /2e btrk-rxb.d9 7) js 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 negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb const )pf;-d thpf ,;k1idbjant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distankpdg(n4g;r ;c.rube) (cwm , tce d. The first charge is larger in magnitude t(w);4de k.mrnr , gbc(c;pu tghan the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are plwk:d2..l8y fqfp xqf 0aced near each other on an insulated table. Which staty0 fkfxdwq. q:fpl2 8.ement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chug9s r: kx;mo1arges on both objects are doubled with no change in x:mkr ;sg9uo1separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive fy6cx; go-7s5g dtrmv;orces of ;y;5cx r mv-sgdogt76 F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What h*gl;bn.u +yjo + 6zsgkappens 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 ibok+lz n* ; y.u6gj+gsts original value? The force is now equal to

  An electron and a proton are sbaq5tw-fr;4r amd /w,eparated by a distance of 1.0 m. What happens to the magnitude of the fo/r;b-w,wafq d t4rma5rce on the proton if a second electron is placed next to the first electron?

  An electron and a proton am6wz/2 ytz ug37g ae5lre separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second elya6eum z 2/3wz7l 5ggtectron is placed next to the proton?

  An electron and a proton are separated1 g d,q:ful atsjfh1c98;ex 1b by a distance of 1.0 m. What happens to the size of thd1ja ut 8l xsb: 9;fc1,qge1fhe force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the cok2sa;pyw;xku/i 5* cnled )-enter 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 p;y /i u d-;aknex5woslkc)2*p ositive 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 the centrtjyi7t9.v-y k 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 magnitude of the force that acts on the center charge due to a third charge of +Q placed at one of the other vertyit9ky v7 jt-.ices?

  Which of the following is not a vectkupb ;,*mns 1lor?

  At twice the distance from a point charge, the strength of the electr9f)y10fie*n3f xolls e1 wjs8ic field

  Is it possible to have a zero electric field value between a negative and p5u -*nz051mi jy2sqidn/ aqiqositiv 2 i qus0nji-q*amyn15qid/z 5e charge along the line joining the two charges?

  Is it possible to have a zero electric field value )zi cevf..mfx m2;;k/2ae kdjf w9ls)between two positive charges along the line joining t kikewfc2azxdfmj sm;l; e)f).2/9.v he two charges?

  Electric field lines near p,2lt. r3y+goxgciux 2sitive point charges

  The electric field shown1k1 )ehjf3jq h

  Can electric field lines intersect in fr qg.:m ijfi:6/szqmr0ys)f 8vee space?

  A solid block of metal in electrostatic equilibrium is pt9( 8:f ojwgpbd 8kq*-t b/plelaced in a uniform electric field. Give a 9fj/boqdgb:(- l t*88ptkpew statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diametpa xh38dx12of ;vgko.5dqo7 duavey29v23ihers are each given the same charge, the electric2dfo;2duk 18h xi2d av yoge 5oq3v9a3.7vhpx field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region whermd:rlgrgn,(-t1jc y h(0pvw -e a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfacn:yc,pd-gg m-t( vrl0wjh 1 (re?

  If a conductor is in electrostatic equil)hl r39ha/ zslibrium near an electric charge

  A positive point charge is enclosed in a holdjoe -xo7j88sh cmj )/a ,vz2flow metallic sphere that is grounded. As compared to the case without the holhz v2mj/)-esojaf 8cj7 x8 d,olow sphere, the electric field at a point directly above the hollow sphere has

State three properties of con(vhbo0ux .g t fs495xgductors in static equilibrium.

State Gauss's law.

  The charge carried by one elec7 d * 1jywkil4 f2;p/xy0cxwnfv1ciz*tron 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 chargshu;cd :14amf8(tv cze of +2.00 mC. How many more protons than electrons does th1t: as cmzh4vd(u c;f8is piece of plastic have?

  What is the charge on 1 ;qtn*-vp0 dktkg of protons?

  An atomic nucleus hal.ys o 92e/bw,p nesz6s 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 2.0e9 4,pxd jzkq5 and -4.0 mC, respectively. What is the magnitude of the electric force between tkz,d qp49x5 jehem?

  A 1.0-C charge is 15 m from a second charge, and tvm3.b 7bubtb 6j.gaeunu1/.ff l2ldfz;9 l+ahe force between them is 1.0 N. What j d/3 b.+lanltugfbb6. l71b.u92zm;ff avueis the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. 6q9 c,jjet d)6jbr9lbw ; l1zj:4al zw How far apart are they?

  The force between a vh73ev(y9ud ypm 13h h$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a/.q6 5fda0w7 gpz box(0vpgwu 1.0-N force. If they are moved to a new separation of 8.0 cm, vuf w7bo z5q d6pg0g/xap0(.wwhat is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first k1bqh3umk;l1 f *z l6sk b-*efcharge is at the origin, the second to the r* z-*lk ;msfq1 6kke1ub3hfb light 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 p 2xb c.dv0tv:.k:pzy 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 cm m:cv2.dz b.y:tx0ppkv ark. 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: Q1 = 2.00 mC atfijf4un/naaup-e9f4r jl d,. an6-; y x = 1.00 m; Q2 = 3.ayuaj-,nd 6l9i n j/f;a- ru 4fnf.4pe00 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 plaqkvvqsqh+)j9c0md 2 : ced 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 + cqdv)mq q9skv2:j 0hforce 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 (apf0yp+- z74u*m u gtf0, 0.10 m); Q3 = 5.0 nC is at (0, 0)470zgf +uufppm-aty *. What 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, 0.10193x zsyt *iiz/)reqd m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on th1zti dxqi ye*3/rs)9ze 5.0 nC charge?

  Three identical charges of 3.0 mC are placed atpc h.y jx5194ibfmen( mfwvb3nz:8 *g the vertices of an equilateral triangle which measures 30 cm on a side. What is thfg(jc bn. f8:p4inmz ve*1mwy93x 5 bhe magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which 0czx vf585zfx8/dq prare separated by 3.0 m. At what point, on 55v8pfx80rfxc q /zzda line between 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 is at81kq zk3b5lc/z fbgg 0 x = 4.0 m. Where on thkq8gz 01 5/fblz3 kcgbe x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at tl57iw-4dn nu: kx5 :iya xtha cs2iv94he origin and charge -q is placed at x = 2a. Where can a third po2k v:5 iixxydn i w7nh:acs-4 ual9t45sitive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total 6- ww o y99-sgfxu4a+muavp /cof $4.0 \times 10^{12} \; electrons$ 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 thcjs 1wxo9n( ;ke force of gravity by the attraction of a fixed proton some distncwsj;o(x9k 1 ance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threab1jylvw:s hgn;4u8z4 ds which are 30 cm long. Both are given4j y4 ng;blhu1 wvsz8: 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 hasni:a iq 2a ;.o4p,mxjz a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the ;iaq:2m, p jza ixn4o.nucleus?

  What are the magnitude and direction of the elecc ix(1 +hes3 gixh;qhd9dl4/c*gw6k q tric field at a distance of 1.50 m from iccs;q6 wxhkgeh / 1hildgd4x3q(9+ * a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the mag i1hwdgzc:c+1w*sb p +nitude of the electric field awpwgcis d++ zh*bc 1:1t the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the d d 3lzfu7eb0n/irection of the elefle7zb0u n /3dctric field?

  A 5.0-C charge is 10 m from a s,*aj.pvbis9txzp3* 1o vkex/ mall test charge. What is the magnitude of the force experienced by a 1.0oa 31j. s*ptv,*vxz/bex 9pik nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dir2s592i, qtg. k pbp/;yup:ba+zbp pqstance of 4.0 m. What is the el+pqkt/b9s pqpbb .; 5 ,prg i:y2p2uazectric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter se6+knu g0*cs9jqggi a 0 thl.,tick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field a0n6g ,qs*utc+hj g algke .0i9t the 30 cm mark?

  A 5.0-mC charge is placed brup g-9. f1urat the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line join-urr.b ufgp 91ing the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 j a: y0xlh-e 2g2(lgrtucdl84m. What is the magnitude of the elet(-raxlh cu8e2d2:g jgl40 lyctric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 *pvzkj ) ztw2dwed-8qhy*l +9 m. The last cok tw *+* p)j8zqwzyelh 2-dv9drner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Chaf b h3jkmdhhe119r 3r*rges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1rrj h 3d1hh1mb ef*3k9); +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 wheec4mur 7i6q5+.qnvd(b;4 di idgc2 iu-ae ro ;n it is placed in a uniform electric fier ;a6q .5cedui7u +be2m; qngd4io (d i-crv4ild. What is the magnitude of this electric field?

  A particle with a charge of fyf)yk1ox 7g/c mj;:n4.0 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 placed ir*t,lsy5/ bbc te5d ;rn an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended?* cs;,r trl/eyd5 t5bb

  A foam ball of mass 0.qm. ( (a6npjur150 g carries 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 the magnitude and direction of the electric f(p(6rj q.manu ield?

  A metal sphere of radius 10 cm carrie jd 8j ypfns :sysddp,fn1.xw9/,kl je1m+9 /vs a charge of +2.0 mC. What is the magnitude of the electric field 5.01 jn ds ,1fydp/j.9wsnvx9se,ylfmkj+ /: pd8 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is t z.fc .wg9qd2jhe electric field 6.0 cm from the center of the sphq wgdfjc.9 2.zere?