State the law of conservation of electric ch9jmoda)o11fxeg m:* narge.

  Is it possible for two negative charg)wc7v+mh1lwqjo: a 3v*q- fvyes to attract each other?

  Is it possible for a positive and a negative charge to attsfpe/, dm,v /ne p:5llract each other?

  A glass rod is rubbed wit+8t+ne e rmq*th a piece of silk. During the process the glass rod ace8 +r tqm*tn+equires a positive charge and the silk

  A proton carries a

  The model of the atom s5)o+,,w h nqs2ct x(r/bhn8 h r2bywvwhows a

  A neutral atom alwaysodaom m r2-+)ru+8ehm has

  An atom has more electrd z3pwr(o7cyl*cv4 t p;g 9g+vons than protons. The atom is

  Materials in which the electrons are bound very tig-sn ;qe(mzmz0 htly to the nuclei are referred tnz s-0 me(qmz;o as

  Materials in which the electrons are bound very looselnh*:vqslpnx.5 bu3 w;y to the nuclei and can move about fr3qb* wp.x 5:vh;nlsnu eely within the material are referred to as

  A negatively charged rod is brought nekf/pn;h 1b+jk-+imdrar one end of an uncharged metal bar. The end of the metal bar farthest from the charged brm1+j nkkid-p ;+/fh rod will be charged

  Sphere A carries a net positive charge, ansb3a.v rz;yeioh7i5wc in.9uu (hi, +d sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a , wyib( 3oe597cun+.h .;si zaivhu irwire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posz2 0couu)saw16tyc8yitively?

  An originally neutral electroscope is briefly touched wdtys5 h fo-/trm:92ti( lv ly;ith a positively charged glass rod. The electrol; r:/h i-ts yo 25(vtd9mlytfscope

  An originally neutral electroscope is grounded briefly while a positively chargo6k 8q 5)hvnbued glass rod is held near it. After5 kub)v 8qonh6 the glass rod is removed, the electroscope

  A positive object touches;ph12i)lyo kn a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Wh;kypnol)i 12 hat happens to the leaves?

  A large negatively charged objg8yh k( 4+;fj1qq x6ugobki u.ect 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 stops. The first ball rolls foqu14ik kox y ggh8.(+ qj;ubf6rward, 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 con-re t3sqh5yfp2p -+okstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The f-ws;)3r iv yapirst charge is larger in magnituawi3ys)-rv; p de than the second charge.

  Sphere A carries a net charge and sphere B is neutralx)f7 k7c jb+ad0gc)z f. They are placed near each other on an insulated table. Which statement best dezdfa7c+) k)0cb gxfj7 scribes the electrostatic force between them?

  Two charged objects attract each other with a certain fode20j w th50cqt.kg 6ip jj/t3rce. If the charges on both objects are double 0 /k t2t65tei0qjhwj.jd3pcgd with no change in separation, the force between them

  Two charges are separated by a distance d and exertn2q5zla bwf:b,v lzma4c9-po,* s9cs mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what,vaoslazp2mz59 * ,q4w9fc nbl:c-bs are the new mutual forces?

  Two charged objects attract each other with a force F. What happenj)zy o(f2m.ijd f(iw4s to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is red4f jm (2yd (izfi).wojuced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a diswzg1yd2785 ,6k:vgjm foe h tgtance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed hef86tmzy, gk:5dvgog7 j1 2wnext to the first electron?

  An electron and a proton 1fj4l exso9l 8l vdd0bgom23,urnv,: are separated by a distance of 1.0 m. What happens to the magnitude of theo:dx92vln bf4 e rso,ldv38 g0lm,1ju force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated bfu g5ytztm3 7k x98e0ky a distance of 1.0 m. What happens to the size of the force on the proton if the electron iu mx78 z t9fk35teyg0ks moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When2lln k(uqj, sm)bt.:ed 8wk-r 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 act 8k2mlqnebjs.r (kd t-wu:,l )ing on the positive charge at the center of the square?

  A point charge of +Q is plac4/.zn4 ki pexzed at 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 N acts on it. Whatk4i/ xnzp .4ez 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 kfs,t5l r3k e,vector?

  At twice the distance from a point charge, the stre5 jyv,/8ai;w 4 l u(:xvblsezongth of the electric field

  Is it possible to have a zero electric field value between a negativ9lne(z x66x3gd .lp xme and positive charge along the line joining the two charges? e6l d l6xx(3m9nxg.zp

  Is it possible to have a zero electric fiyz4ko-p u zi.-b gw3gg97b 5grr6p,aw eld value between two positive charges along the lineu. ziog37zaybk-54,gwr - 9w rppggb6 joining the two charges?

  Electric field lines near psitive point chpe8g6gbik * ;warges

  The electric field shownxqgk9ng ,-/n bn7z5do

  Can electric field lines ff+ yu(d91k3-d:ftsj )lymcp intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform es q(jy -kyff+nq4k/0 jr6 /rf54a* 4pekpjornlectric field. Give a statement concerning thejp( -pa44y sj4r 5*er6nkn0ofjy /qk fr+f/ qk electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of p a9) m3 ey27neq(q)nyixb;teequal diameters are each given the same charge, the electric field (E) midway between the cexetpq 3y mn)e; )(ya 2nq7ib9enter and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a 7 d11rb d9o0kljv ng4runiform electric field is directed straight upward. What can be said concerning thn0497 g1 r1odlvbrjdke charge on the block's top surface?

  If a conductor is inur;qq +t4d)( z9k hx6l+ueuk p electrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metae,a8m4)v xrek llic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at aekm8 verxa4, ) point directly above the hollow sphere has

State three properties of conductors in statp. )zv5 gpggzcv214 atic equilibrium.

State Gauss's law.

  The charge carried by one electron i f 7q.ibkh2u( -.vzvnl4tk1kjs $e = -1.6 \times 10^{-19} \; C$. 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 prdc6scw hcs ,m j)3g5m3u 7py;imx(4 edotons than electrons does this piews;6x5)sm 7 dp34i3(myu c j,e gdccmhce of plastic have?

  What is the charge on 1 kgt rek,me568+arr v fp+ of protons?

  An atomic nucleus has a chd*uu4 2p- vfqr kv3 0ab(zy*ftarge 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 -6m j7n*(h cwriy/mv,w4.0 mC, respectively. What is the magnitude of the electric force between themmw /jrnciy ,m *(6whv7?

  A 1.0-C charge is 15 m from a second charge, and the force between ka , )*ivzcw-sthem is 1.0 N. What is the magnitude of the-wak,sci z)v * second charge?

  Two 1.0-C charges have a force between thema*f 7qd6djoc * of 1.0 N. How far apart are they?

  The force between a 8r sj pjof7):x$30 \; mC$ 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 1npn *:naey 9.o.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between them?e.nonya *: pn9

  Three identical point charges of 2.0 mC are placed on the x-axis. u) i.kijz+j-+l:rl by The first charge is at the origin, the second to the right z+kb j rj:+ iyu.)ll-iat 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 chargeh 6wmo 6r5jpmi(1+ycb.e7 j d,3xsrz wihek31 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 die (myoxdic3.j pz5 13wk+hs6,br1 7 wh 6ierjmrection 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 jepsjw d * kfnymqk/bz- + qnj:v-85-8at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 /y k*w5-j+nn-8 pjq q: kesz-fbdjm8vm. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q i,4 ao fys67sdhs placed 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 acf6a,74 dho systs 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 axb+0fb.b k0ye t (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the mb+f 0ybkx.0ebagnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nClsgw/u(4-ss h 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 nC chargl( s4ss h-u/wge?

  Three identical charges of 3.0 mC are jg1br lu-xd96ud *r i9placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any oned gj*xbu1r- r9liud 96 of the charges?

  Consider point charges of +Q and +4Q, which are separated by q dr u1kwrt35-3.0 m. At what point, d1rq 35twu- kron a 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 at x = 4.0 m. Where .*8h j x.e 8tksdy- vyskj)h1ton the x-axis can a t vjt ). jhsdytx*kk8yh-.1 es8hird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pla49 tdxphmr7+/w- ozgjced at x = 2a. Where can a third to/xzrh7jw m-49gp+d positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totaf1 o ndhj)sh+6l 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 (o ocn(/ y ,8fiurft+pattraction of a fixed proton some distance above it(8fpy /i,+n( cufroto . How far above the electron is the proton?

  Two 0.20-g metal spheres are hung fywi x7cze76k6rom a common point by nonconducting threads w7 ie6 yw6xk7zchich are 30 cm long. Both are 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 charge of +40*:h8,tvsh p26ad m, ukpd5fn/sasi /s e. What is the magnitude of the electric field at a distance ofsd:s h na,u m*5d6/sv2tp fh,ik8psa/ 1.0 m from the nucleus?

  What are the magnitude and di1umhy)0y+6eme r 6pf k wg6-kprection of the electric field at a distance of 1.50 m 6kem6mru6gy)1-w p+hf 0 yepk from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Whaslmr;55y 2 mfut is the magnitude of the electric field at5;ml my r2fsu5 the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction)axlf4 lt m-l1 of the elecflax 14)l lmt-tric field?

  A 5.0-C charge is 10 m from a smas6 cwn(e jd4 7ua.9tn2 cg2a*hm gj6tsll test charge. What is the magnitude of the force experienced by a 1.0 nC charge p g6tas sutc* m (j26nehd9wnj.27ga4 claced at the location of the test charge?

  Two point charges each have a vadbd 6uxgfq2 bek ;v-tao7., 7y 4el*sblue of 3.0 C and are separated by a distance of 4.0 m. What2u-v7o 4;l,ke.bbd6 *efg tda7qsb xy is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC ct.sbklop4j k ,8oe6+ug)n7y charge is placed at the 50 cm mark. What is the electri 8o.gksbp)len u76k+j4y to ,cc field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a m9 (amk j93*gb bldocil):ijd1 eter stick and a -4.0 mC charge is placed at the 50 cm mark. At what poink b)iao9*cmil9j l 13gb:djd (t on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed lw p5 5g+hksdk 1v62 k93rxfvuat x = 0 and x = 0.20 m. What is the magnitude of the electric field at the poin+ 9hr p16fk55l3x sgwdkv k2vut midway between them?

  Three 3.0 mC charges are at the th nkb.wnyi9y4j)4 ea f;ree corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fi ny)94wyf;ijknb4ae.eld at the center of the square.

  Consider a square which is 1.0 m on a side. Charges(m aq+wjkclt, 4iov + nlhq,2k;:ir0 d are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mCmkq;,+4w(cdilja n2rqv lio,t h+ k0 : 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 i)fopk.m/mp uc4 vm/ +of 5.0 mC when it is placed in a uniform electric field. W4 /pmu.m+c/v fko) pmihat is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mal3yub 17q,k;plh ki k*ss 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 electrc n,1v5htskm: y1 re8mic field of 6000 N/C pointing downward. Wh1kvt85 yhe:msm,1 crn at charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 rzrvmo* :zx: , 7)zyieg carries a charge of -2.00 nC. The ball is placed inside a uniform electric fiez: xyi ,*e7ozr:v)rmzld, and is suspended 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.,vz3st6/lw qxgocxp6*b 6sv asch 9- ) What is the magnitude of the electric field 5.0 cxhs 6s6 c 9-/),tzq 6wlxbpsv3vo*g acm from the sphere's surface?

  A metal sphere of radius 2.0 y1f0ma/0ms yz (3:mp0c ;ll k2ierejicm carries a charge of 3.0 mC. What is the electric field 6.;i0 jiel100(zf : smkp2a/remcm yl y30 cm from the center of the sphere?