State the law of conser td :swrd8 6py7n0 vnlb1kd3+evation of electric charge.

  Is it possible for two neguw iu e y5f/u/4(qwiv1ative charges to attract each other?

  Is it possible for a positive and a ned7xnj,9dttmvr3e f b hwa/p )+;y3r 5vgative charge to attract each other?

  A glass rod is rubbed 6ijemt;( 3yca*9ksxo9q eys6 with a piece of silk. During the process the glass rod acquires a p * kyy9c3 9ojeatims(6sq;x6eositive charge and the silk

  A proton carries a

  The model of the atom showo7c2sb.edmdb-za4.t / bl a q4s a

  A neutral atom always happmw6ym)3mbnub4 (/v s

  An atom has more electrons than pmjq:x t( dji22rotons. The atom is

  Materials in which the electrons are boundf, y6ltqtb1 )cvgo+m8 very tightly to the nuclei are referred tm ,g6b l)yqc ov1tf+t8o as

  Materials in which the electrons are bound very loosely to the nuclei and 3bl de e0zifpljq6 .b(5t:(hocan movb6z:.dt(5h(f0 le ljbi opq3ee about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metald2-myvh;+ 2zczr8 smv bar. The end of the metal bar farthest from the charged ro8-rz +dc2z; 2 mvhmsyvd will be charged

  Sphere A carries a net positive chaw:q +eonnus6(rge, and sphere B is neutral. They are placed near each other on n +we:( 6qusonan insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrh9y1q;t h .v dfukyt)s)3gvz(jug 50-fqd0 eioscope positively?

  An originally neutral eyap bgc q 5t3p((xd/*wlectroscope is briefly touched with a positively charged glass rod. The electrosc3pbw5c * p/gt xq(d(ayope

  An originally neutral electroscope is grounded briefly while at y+mc0 )t.;acwt :taf positively charged glass rod is held near it. After the glass rod is r)atttayctfcw. 0 m;+:emoved, the electroscope

  A positive object touches a neutral electroscovelns.m6 v-i 9wv) z;ape, and the leaves separate. Then a negative object is brought near the electroscope, but does not tou.) m9svla i 6zvev;nw-ch it. What happens to the leaves?

  A large negatively charged object iosu/.v 5*i/goplc3lzs 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 forward, but does not touch the negative object. At no time does either ball touch theoslviucgz* o/5 3l./ p negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb cons84ej0ojg3-i xu)h oi utant $k$, which appears in Coulomb's law?

  Two charged objects arela--f.t*k x 4rke he-j separated by a distance d. The first charge is larger in ma x-ake*ltfe 4r.k-j- hgnitude than the second charge.

  Sphere A carries a net charge and spl.+u4zd h+ b-impczq6here B is neutral. They are placed near each other on an insulated table. Which statement best describes the eleq+z u z4i.6lh-p+dcmbctrostatic force between them?

  Two charged objects attract each other with a certain force. I *ukf rvu3w :ru)lxq.8f the charges on both objects are doubled with no change in s xlruuu 3.8 f:)*kwqvreparation, the force between them

  Two charges are separated by a distance d and exert mutual am/ fc7 )e.e k;-nikussttractive forces of F on each other. I;s i.em7uk /cs)f-knef the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attra, res,-bahem)1a2 ( qhs/ztl gct each other with a force F. What happens to the force between them if one charge is doubled, the other charge iss lb trmza,eh- gs,(1aqe/ h)2 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 protov3gwglt5b*+-amn 2x rd syh 96n are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron a6ryxv2- gl9s t*hw3d +5gn mbis placed next to the first electron?

  An electron and a proton are separated by a distag2(kdc 3aix8oajty2 - nce of 1.0 m. What happens to the magnitude of the force on the ox8 dc2jt2-g(k3i aya first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What haz 67 ),d5zoinxr5g6ou.hb o hxppens to the size of the force on the pr6b,on z)56 oxrhdozh7 g.u x5ioton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q iz /fy(n(nhpuwld,4 *ds 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 ofn*hpl,y u (d(nf/zdw4 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 cenxmx0sn8j wc/.troid of an equilateral triangle. When a second charge of +Q is plawjxsn 0x8/ mc.ced 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 is not am6s-4/x yi fwu vector?

  At twice the distance from a point charge,fad8cgd85m(xqjpb )gc)9:gyd:k2 gu the strength of the electric field

  Is it possible to have a zero3 d 6jpwo1fx4k electric field value between a negative and positive charge along the line joining 61kxwo jfd34pthe two charges?

  Is it possible to have a zero electrp16b4 ebm3 vn*zs kut y4k*h6oic field value between two positive charges along the line joining the tvpmnk kby e361s*uz6thb4 4*owo charges?

  Electric field lines near psitive , yhhe/3akpg*w() qatpoint charges

  The electric field shown w2civr++z 0n1llwnb7

  Can electric field lines intersect in free sfhdu-nt rh;-00 he 8xx wz* 7.zemp9kepace?

  A solid block of metal in electrostatic equilibrium is placed in a ub0,saw9 w48dz vuk b6aybmlf:w:a )u*niform electric field. Give a statement concerning the electric field in the block's i )ylwd,fu:b0*6 :m8z4a v buwab9w skanterior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gidw0*dfmnz pgd m((h8+ ven the same charge, the electric field (E) midway between the center afw((gm+d*0zd pn md 8hnd the surface is

  A cubic block of aluminum rests on a wooden table iv 1*yw3 vw6dwxn a region where a uniform electric field is directed6vwd xyw13wv* straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an ele7cbbp xv-,gn/ctric charge

  A positive point charge is enclosed in a hollow metallic sphere thm.n1nix98 iv;onm qa. at is grounded. As compared to the casnn9n;1 mi8xi. v oqm.ae without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilqid b 1kt8kmo5s:p+n.3 ytk w2ibrium.

State Gauss's law.

  The charge carried by one elect z(2zbt+o fkw2ron 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 mannm.gx jux 5 jsj(*u/f;y more protons than electjgu/n f.us*xjx 5j(m; rons does this piece of plastic have?

  What is the charge on 1 kg of lp/ chac1(mg8 ;k* 5oxc b.-ijq+kxddprotons?

  An atomic nucleus has a chx)-fay43,mpk m1zae:x b6obdarge 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 -4.0 mC, h6 ,fy43hjflwez /a p 9jrrc+2respectively. What is the magnitude of the electric forcz6j p+4y2re/l9w, jf 3 hhfrcae between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.ik*y*rgc9i i *fk.u f)0 N. What is the magnitiyu*if*)kcri g *. fk9ude of the second charge?

  Two 1.0-C charges have a force between thev(k :x-ijx t+gm of 1.0 N. How far apart are they?

  The force between a y1s1i/sbf,jw pu:oq .$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apari5hq p 5gxkws2s f;51l)bv4vat, experience a 1.0-N force. If they are moved to a new sepavqg2;k4h 5ibxl 1w fap5vs5)sration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed h:3b)l3tov x86nye y6 o;efu. gvizv2on the x-axis. The first charge is at the origin, the second to the right at x = 50 e ;oiz: eht36v)26gbyo3n.y u8lvvfx 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 chaad bd20)r6tt v0ddp;drge 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 on the char ddbp2 dt;dd) 0v6art0ge at the origin?

  Three point charges are located at the following positions: bj/18h kae,os Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC akeb,18s/ha j ot 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 secon z:w2xtqr ,y1z 9lixf1d 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 center charge if a third charge of -f1,i z rytq wl9x2z:x1Q 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 = 5.0 nC is a go r3m um5lie2jx):s.ti uo2j)5mgsexr3:.m l (0, 0). 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, 0.10 mowd g +2g;arfav8;g/v); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nCw+/dag g;av82govf; r charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral tw7-amg)slf 7sriangle which mea ass7g-l)7fw msures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At c (o e7 1n1;oti3tqm0hf gjt4pwhat point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force4;t nm1 7ogtfjctqh o(e0p1i3 acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 8ej)uh(icu :r 4.0 m. Where on the x-axis can a third charge be plar8)(eijh uu:c ced so the net force on it is zero?

  Charge +2q is placed at the origin and charge+cr ao;amq ux6uamp5 t3y6e0 a;o/qg1oo5e; s -q is placed at x = 2a. Where can a third positi6m auxmr3opa6oo yq+oca 5aeu;/geq1 0;;5tsve charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 37rgl ki r9+tah5kff,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 grav 7;c 2lt cs(up9kwxig1ity by the attraction of a fixed proton some distance above it. How far above the electron is the proton? sut71 k xwig(c;29plc

  Two 0.20-g metal sphayslrzf./w:nq ve : /de*z rj6g3 7a su2oq21ueres are hung from a common point by nonconducting threads which ar / 1:gu 7/o*qduev sr2w3.n6 sz:qjra2 fyezale 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 hashnv5q ,fpwl* ; d7i(tf a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m fdfpqtv h,;nl 5(7i *fwrom the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.q 8m(1wmzv ku3vv+we5 dku /m:50 m from a 50.0:5m(3mqzd kuv+8/k w1me u wvv-nC charge?

  A 5.0-C charge is 10 m from a smallo j0r43nht+*v jvft :efjp/ p* test charge. What is the magnitude of the electric0 jf+tn t/vhpp*4jef *:ov3r j field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dir )mjea+vz29y b2cfs3c ection of the elect9jzce)2v fsbm+c a y32ric field?

  A 5.0-C charge is 10 m from a small test charge. What is thet :4hk b6y4sv2w eht8+iy5feo magnitude of the force experienced by a 1.0 nC charg4 ebiyy 4fto2t6v85hs:ew hk +e placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separa;x+dxg zj: zyb20hi 2o/hsg3ne. 5x/zc8gf utted by a distance of 4.0 m. What is thhsyf/+cx5 xd. zn;bi gu2/ gjx0t:8 z2zog e3he electric field at a point midway between the two charges?

  A 5.0-mC charge is placew3cyp8 e,()oxsie7 a+bxdii .d at the 0 cm mark 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 3iwx ,8abd oceei.xsp+i) (y7cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and agz-ze dq 5jt80hfnn97z70vjg -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zerf9g7ejjzh-dg7ztvn500 n8q zo?

  Two point charges of +of 42:v cto*jvcs+ )yw3.0 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 :4j)c+2 wv*syvt co ofmidway between them?

  Three 3.0 mC charges arl670gf 4uw xjwe at the three corners 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 o7j6wf w40gu lxf the square.

  Consider a square which is 1.0 m on a svser5 n0h-q;z ide. Charges are placed at the corners of the square as follows: +4.0 mC at snr zqv;he0 -5(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 of 5.0 mC when it is placed in a .fn8t98zyyml e pv9q6uniform electric field. What is the magnitude oftm e6p8zq 8yvfny9l9. this electric field?

  A particle with a charge oh6dg 4k-*k0 j,q arwpff 4.0 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 in an electricq 1 r91uzwddz6 field of 6000 N/C pointing downward.1 uwrdq9dz 16z What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. at/qn/zv 2dz s+,x:ye The ball is placed inside a uniform elect2zda nq+ /y: zsvtx,e/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 cha h79/odwp- hi qm;e84 6yaylssrge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surface qe 7samw9s6-h;l/y ho 4d8pyi?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electrikoo:;88q 0pgz2xkc )puaxo /ac field 6.0 cm from the centezo: / 2gq;kxoc paua 88k)xpo0r of the sphere?