State the law of conservation of electri 7 uey0fk ,wt syv 0m7hr 8vdqdnnm/)4225imafc charge.

  Is it possible for two negat5 qiz4vrnkj .5ive charges to attract each other?

  Is it possible for a positive and a negatgubr m l()t4j .vv)km(ive charge to attract each other?

  A glass rod is rubbed with a piece of silk. During thephbe ,(6f4 -j6lphhkm process the glass rod acquires a positive charge and tf jml6hep,h6pk -h 4b(he silk

  A proton carries a

  The model of the atom showi h(f48;q9 lhoshkhl6 s a

  A neutral atom always haslz;tjfz k(ya /9 :-pqa

  An atom has more electrons thajqw/m xx0+vxnbs +/hki:t a*a7 gy 4.an protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refers t4 tw31uuektr y603vrews1tt uu0y34k 3r6tevd to as

  Materials in which the electrons are bound vetdav 19hj-gd mpjr n)ry 2u:mmmf,33,ry loosely to the nuclei and can move about freely within the j 3h:a)m- 1dfmrjpmnv329u,g,tdy r mmaterial are referred to as

  A negatively charged rod 6xja) k/t/ w9jmy+t ,vbnn ,klis brought near one end of an uncharged metal bar. The end of the metal bar farthest from th69tx v,nk anktlwbjy/)/,j+ m e charged rod will be charged

  Sphere A carries a net positive charge, and sphere B df92 5g6zgtzsis neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is corr25sfdz9 g6t gzect?

  How can a negatively charged ro qer(*mwd(q7c;49dc gtpfe: zd charge an electroscope positively?

  An originally neutral electroscope is bribazcnod 8 ::f3xw )z)befly touched with a positively charged glass rodoz:z c:anx3)fdbw b8) . The electroscope

  An originally neutral electroscope is grounded briefly whiowjgo hd+fzro1/a3j 3r*/fm89cc re 8le a positively charged glass rod is held near it. After the glass rod is removed, the*/j3zo9+w8 a18 3/gorhjffrcc r dom e electroscope

  A positive object touches a neutral electroscope, and the w/j0q9xil * efleaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?9ji/xqf *ew0l

  A large negatively charged object is placed on an insu g7t6rns/cu h58i3xgvlated 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 forward, but does not touch the negative object. At no time does either ball touch the negative object. 53chxgg u v87/s6t rinWhat is the final charge on each ball?

  Charge is

  What are the units of the Coulomb cogy0 hc ap00dmncn7; p1i+;nyrnstant $k$, which appears in Coulomb's law?

  Two charged objects arm) /cfnx-mm a)ct 7klwh01 w(be separated by a distance d. The first charge is larger in magnitude tx7wl/ tbm-mck 1cawfnh))0m ( han the second charge.

  Sphere A carries a net charge and sphere B is neuxif xcr+,9x tbdd7,;utral. They are placed near each other on an insulated table. Whichf9c7+xu, b;xi rt, xdd statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargen mq2:4n;f(b xl(brr ds on both objects are doubled with no change ;lrbq( 4xr2f( ndn:mb in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive foe gl;t.a7trd1 d9u;ld .or 2ivrces of F on each other. If the charges are separatedtddird uol..l;t ev;r9 2a 1g7 by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hapr nw3c)b/ix- cpens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between t 3ncw/-b)c xriheir centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separatw h00+uti qpm+21se ut1-jjge ed by a distance of 1.0 m. What happens to the magnitude oe 1jge su-0hmj+t1qtu0wi+p2 f the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are se oxeju 5.rn;lg-y; 9yy:p0co vparated by a distance of 1.0 m. What happens to the magnitude of the force on the firs.9jx05oyvp;nlu r- e:gc ;yyot electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distanc ee/yms5.5ztw/ si ,q,8uxzvye of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50ytvysiwus/ze xe5,q z/.m,5 8 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a seg45di1 +gy7 gwz0iv 8 ol *ckmg9,rudecond point charge of -Q is placed at one of the square's corners, it yv87z4+ wmludr gd0 ck*gi gg5oi,9e1is 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 the centroid of an u/x2a lt0fr1t equilateral triangle. When a second charge of +Q is plf/ tx2lu1ta0 raced 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 vertices?

  Which of the following (dqbm5a hw.9 ois not a vector?

  At twice the distance from a point charge, the strength of the electy 2bjtesa*)vu; bux9,ric field

  Is it possible to have a zero el* yx)ok hk-v(tectric field value between a negative and positive charge along the line joining the two ch(tv -*yox)kk harges?

  Is it possible to have a zero electric field value between twoqy dj f2 ultqer:w;95;p/yv )w positive charges aloy/dwq9qlwe:f 5; vt)py r;u j2ng the line joining the two charges?

  Electric field lines kfmp zcn.oooh:i:z-+ +8k rl8near psitive point charges

  The electric field shown b .bg8b, fad2r*rs5r;qag,sx

  Can electric field linec3qgf3,c wydui+p07;j vh- bzs intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in /nsmqk9g z-+8 6fmyw+ols u/c a uniform electric field. Give a statement concerning the electric field in the block's inte/sqm9ykuof+- wzm8c+6 l / sngrior.

  If a solid metal sphere and a hollow metal sphe v/w+mx 8mjqr7re of equal diameters are each given th7 wx8jmvm+r/qe same charge, the electric 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 u axi:.e;jvj il 3qc(-mniform electric field is directed straight upward. What can be said con.i3 :jxl;-q jaciev (mcerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium n4,pl j2vi2 ,eas/nzhcear an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is g3 yydc rib umcc5h*8za5:92g* q zue;mrounded. As compared to theczg* 9y2b:au*uzrc di5m3eq 5yh m;8 c case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stjdp6o7 77a/ hyv(aoxgatic equilibrium.

State Gauss's law.

  The charge carried by one electronc7jfvu*.r3n n 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 chaa a1 1:fj4z /csglwl6i*v(cxirge of +2.00 mC. How many more protons than eleazcwjal11 i s i6 *:fx4v(cgl/ctrons does this piece of plastic have?

  What is the charge on 1 kg of protxdzxc;+6k z-y4v+o s bons?

  An atomic nucleus has a c0 yre7k fg xm((4cqsn4harge 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, hal*dz 8l/x2f ndve charge values of 2.0 and -4.0 mC, respectively. What is the magnitude odfdl x/nlz28*f the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between themw kza qxl70mk9t 2y :(pe+qv.l is 1.0 N. What is the70v(aqekqwk z.:x l+l p9ymt2 magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 Nf/i;lzc6 y/hm. How far apart are they?

  The force between a klwm:tjo(m dg : m45dz2;n8 fq$30 \; mC$ 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 1.0-N f;b avei9*/b sjorce. If they are moved tb e;/9bs* javio 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 the x-axis -mvs 71t;xyme2ds9 wv. The first charge is at the origin, the seconm-svtxvyd; 9 7e wm12sd 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 themv j)ewmbn1e e4* o/jc 0)c9oe 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 mark. What are the magnitude and direction of the electrostatic force which j e 1e*obcjwe cm49))v/mn 0oeacts on the charge at the origin?

  Three point charges are located at the following positio/ ( ue.w(i4x fl1eprwqns: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -54( q1ep r( /lfw.euwxi.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 placed at the center of a square, and a second point c5;2vgm lt7fwz1g sn7 g:jvd1d ml8.jcharge of -Q is placed at the u7cn5fd 1.ljmg:;g gl vwsvtm72z81jd pper-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 = 5d829n9szwaohdd: +j n.0 nC is at (0, 0). What is the magnitude of the net 9+n a:hwdoz2s9dnjd8 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); Q3 ssasg;fl 4)h0 ryft *fml-0p5do0y1s = 5.0 nC is at (0, 0). What is the direction of th5 lpl-gsa0m)syh10 ytf r *ffs4 ds0;oe net force on the 5.0 nC charge?

  Three identical charges 0wyql *yx) -octs to70)z*fkmof 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the mag 7c*x0 t)qsy 0* ykwtzm-f)oolnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q ln63n j w:7gqband +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting ow:gnjb7 lq6n 3n 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.cdd6s fgln g6sh6zqpuc).0v qg6.ir27a*wk: Where on the x-axis can a third charge be placed so the net force on it i7) g.rgsflzn i *p qug :h62wak6cdv6cdqs06.s zero?

  Charge +2q is placed gm5sss qe 9(7dat the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is97 (mses d5qgs zero?

  A copper penny has a map a2k hccq*lk3iqb6a vvw*i*h.28( hgss 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 attraction of a ftjkzp58 3 u9ftixed proton some distance above it. How far abptk3tuj8 z59fove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threr50y omr/ww6oads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion/w 0w6rrym5oo 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 +40e. What is the magnitude of 2tc0b /c7c9(oikl khwthe electric field at a dist9/ ckcohk(cli207 wbtance of 1.0 m from the nucleus?

  What are the magnitude and diq9 fzu i+nk2f )kb1o-irection of the electric field at a distance of 1.50 m from a 50.0-nkufoqz9f) b -iki+ n12C charge?

  A 5.0-C charge is 10 m from a small test charge. khx1rtq / eqg.ym 3(9fbdexy;9u2 a8sWhat is the magnitude of the electric field at the locatimte9y x3x8.bh/rs91e2 d u g(q ;yqafkon of the test charge?

  A 5.0-C charge is 10 m from a small test char12sg(4qtc.y gds, dg rge. What is the direction of the egs1t2q4 dsgc(r,.gydlectric field?

  A 5.0-C charge is 10 m from a small tewdqr 4ds vu+,2 b2uqd/st charge. What is the magnitude of the force expwd4/2uv qb us+rqd, d2erienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3 +uz4cu xyeqg82rk2.k (emo+u.0 C and are separated by a distance of 4.0 m. What is c+ryx82zgq 2+k(4umu koeeu .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 o wfw s6nzfzm0wl5c4,g 0os4+charge is placed at the 50 cm mark. What is the electric field awzowcf4s,6 go5mnszl 4wf0 0+ t the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -bq:v-fi9u gpyqi ljkv1:12a. 4.0 mC charge is placed at the 50 :2:yvkvjlp f -u.igaqb1iq 19cm mark. At what point 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 at x = 0 and x = 0.20 m. W gxq,5jtcsl2tz )u p7;ldcl6-hat is the magnitudjc ,-g;2ql)dz c 5txp67lls ute of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a sqaqtj k(yec;gqy.0l 2 df+ z2)6cf( sxyuare of side 0.50 m. The last corner is occupied by a -3qg(ff xyqydc.t azy (2; 2j6s)ec+0kl.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a s.zl (5cplt ,jvide. Charges are placed at the corners of the square as follows: +4.p(lvjc5z .t,l0 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 utu a8x 0botbus1czd; 1h 0p+)of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of thx18 0p uu0c;od )bzbta1 thu+sis electric field?

  A particle with a charge of 4.0 mC has+k8/ aqc 4teyy-kg;-cm3wie9hh7 lrd 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 in an ed qd9 eo8kd.90qlm3e*ub c:lelectric field of 6000 N/C pointing downward. What charge must be placed on the ball for it tm9q9ldo u 0eq.l8k:3 bcdde* eo be suspended?

  A foam ball of mass r b5sthno3+*d0.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electns53br* ho dt+ric field, 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 .-sl q9xpbaz7+2.0 mC. What is the magnitude of the el.l xp9 bzs7qa-ectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cmolc/w laoklb ec7 ef7+ y e2kn6l4b.apq-j,25 carries a charge of 3.0 mC. What is the electric field 6.0 cm frol6-27c jaef52wn ob/ .kelyc,k q47+aolpbel m the center of the sphere?