State the law of con2qf9e.qc lc8ay;l7 b2 p 4g6+blry ydkservation of electric charge.

  Is it possible for two negative charges tvy1::pyulc.* s 0jy)pg wte* jo attract each other?

  Is it possible for a positive and a negative charge to attract each us- /; p-8mocrcmc ok-other?

  A glass rod is rubbed with a pieceyr4u bd9(+g8 i/iomr t1 x0uxp of silk. During the process the glass rod acquires a positive charge and iubd0iy o x ru18/gxtrm4(9+p the silk

  A proton carries a

  The model of the atom shoy uzxli8djcgq)5t8fjb1vv e12f0q l3 +pp.,tws a

  A neutral atom alway s2tosj8w tjy:1a1)los has

  An atom has more electrv,jmk(j:qh .k ons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei /) fw wna*wf(3cgw;4v2u45d dojjxhf are referred to)34* o;wjuwx 4 fdd/wgc fajf25n(wvh as

  Materials in which the electrons are bound very loosely to the nuclei andi ..ss pi4leo ak1-:*iso;z yv can move about i -a :.;ikevo.pss1s oizl*y4freely within the material are referred to as

  A negatively charged ,gll(ge9,0 z/bfmast rod is brought near one end of an uncharged metal bar. The end of the metalgtsm0,z/elbfl a( ,9 g bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are placewi,i0 5hkpe -j0 ,un,yk9va hnd near e5k9peh-k,,0,vi wn0in yuhajach other on an 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 electroscopef nn 78gv,zze6stac :* positively?

  An originally neutral electroscope is briefly touched with a positively charged hi67p2 m/rlxxglass rod. pmh ir/l6xx2 7 The electroscope

  An originally neutral electroscope is grounded briefly while a positively charg 23l,aye+ qcf1ybklr hz8 uq sj0j.j)2ed glass rod is he zjq 2+ye. ,l0u)kh3j j82rqclf b1yasld near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral elew 6 /,hju+viiqctroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch iti h+ j6u,wi/vq. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral sx0thon49 uw :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 objuxs n:wh0o94t ect. What is the final charge on each ball?

  Charge is

  What are the units of the Coulo xn(tqf+ 2/;urqw;uvh mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancepd4n dh 2 ; 5ma8nscu.v;1exow d. The first charge is larger in magnitude than the second c ;w5.;xcuse2n4adp dmvohn 81harge.

  Sphere A carries a net ch ,25rqxq+ywv 4kert04x bxhg/arge and sphere B is neutral. They are placed near each other on an insulated table. Which statem45+ xw0/qk,gxy4 h2xveq tb rrent best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chare-d 5gj sywftsk )3axt1,s1)hzrd f 75ges on both objects are doubled with no change in separation, the force bejw1sseh d-)1 ,yst7 k3rt5xf5azgd)f tween them

  Two charges are separated by a distance d and exert mutual attractive forcen/ re92ql7v bos of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces2/bqr9 eo7vln?

  Two charged objects attract each other with a force F. What hapx;lb6rp/3xp 2pb7 v3jru scb(pens to the force between them if one charge is doubled, the other charge 23x3urv p p cbbj p(b6rxs7;l/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 sepvd0ddsbkwvqte 9+6hlt,/a uft)* . f *arated by a distance of 1.0 m. What happens to the magnitudedvt) h6qv* 0*t,b9ta.fl fseuw/d k+d of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated z htg*b*n :8-rr)9fdrsxa l9t by a distance of 1.0 m. What happens to tt:s dr9grh * fr -)8n9ztalbx*he magnitude of the force on the 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. Wxi/0- + ypz6u ip0ifoqhat happens to the size of the forceiq yxii+o p6zp0u/f -0 on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the c)k -zb 1v9gdgh+pk; pwenter 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 square1+ p9 wp;khb)gvkg-zd. 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 1ghnue jpte,q0z 6y( wiym(rc:,4gw6the 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. What is the magnitude of the force that acts on the center ch itp6g0u w,(n4,ey:(61c zwjqg yr meharge due to a third charge of +Q placed at one of the other vertices?

  Which of the followinoxvuy+z2k5s+z5 .1dj:j6 7spttagxfg is not a vector?

  At twice the distance fros9pzjwao 3fqjzcx7,p . h8skx :*3(tcm a point charge, the strength of the electric field

  Is it possible to have a zero electric fyr7z)s1tke p8 ield value between a negative and positive )8y1p tr 7keszcharge along the line joining the two charges?

  Is it possible to have a zero electric3(.1zt pob4g y a1bjju field value between two positive charges along thegutbj4a1 1b3j.y z(po line joining the two charges?

  Electric field lines near psitkxc6 g j-i:0ceive point charges

  The electric field shownnq lk(how(yn53z gs gs.tyx g99-o w9)

  Can electric field lines intersect in fh g2uznj,0 lq5ree space?

  A solid block of metal in electrostatic equilibrium is placed ipxx.d-:j h122 zbs owgn a uniform electric field. Give a statement concerning the electric field in 1wxb.p:z22 -hodx sg jthe block's interior.

  If a solid metal sphere and a hollow metal sphere of equal hfk9 3a1luw/b diameters are each given the same charge, the electrif1a w3hu b/9klc field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tablsf* ;d)j kr-m6-mphha e in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top s ak)--hmpmdrjf *h ;6surface?

  If a conductor is in electrostatic equilibrium near an electrs0m1r..rgm*se y cdz5ic charge

  A positive point charge is encloyoyyyq 44.8 zgsed in a hollow metallic sphere that is grounded. As compaoyyy4q.g yz48red to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in4ye nv an2 (uxvd002lh static equilibrium.

State Gauss's law.

  The charge carried by one el,5ek0 (qwfg1v; htz pgectron 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 c :ilht x9ps8h n8purcz.wd;/ ,harge of +2.00 mC. How many more protons than electrons doh w lh9 /nrs;:8dp uz,p8it.xces this piece of plastic have?

  What is the charge on 1 kg onaep2r h jx9msk j: vfc,;n;+6f protons?

  An atomic nucleus has a chargenzb 3 ;1zo4sygkcre6hp 6c/ p4y9 /dvw 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,vb9s2 /:ilbh9f3-jvm17 rj wzmh1kul have charge values of 2.0 and -4.0 mC, respect/l 9 mv 71 sl2-jb9v1b:3hi fmwkrujhzively. 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 bet0-gs xz-k2am dzgcu5gr:/+dx ween them is 1.0 N. Wh-g zrsg-5czx/xk a: dd0um2g+at is the magnitude of the second charge?

  Two 1.0-C charges have a force between them o1:gc ax vf2f,nf 1.0 N. How far apart are they?

  The force between a s6t; hqw8+xvix*d w,c$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exp*e h3;z lakvbm9zv3z.erience a 1.0-N force. If they are moved . zzvm*hk3v el9az;3bto a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are plar 0 femc3;jkdw*q *q la2 h9czty4lh6.ced on the x-axis. The first charge is at the origin, 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 th6 4q2.0t* 3 acwckmd9r fjl;hyel* zqhe origin?

  Three point charges are placed on the x-axis. A charge ofszl)vpa50e wx -ndy *1 +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 f)dey z*0x51 a-pswvl norce which acts on the charge at the origin?

  Three point charges z po dzch08xhs3 4v(.oare located at the 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 s(8vhxo3pzodzhc.4 0 the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed i 9euzp1)puua 0neh/i2gbt, 0at 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 center charge if a third charge of -Q ise/0unpg ,)hbt 12ipz09i euau placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Qdkmy7u; :gej1byd gx;u6 :/7jsjq mlc p1u7k /2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude o/;;m1y: xbjjpykge6 uu7d17mdkq lu/g7s :j cf the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0/ic8 tp*v8ubm c7ur. g.30 m, 0); Q2 = -1.0 nC 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 charge?mcip*.88rb7uc ugvt/

  Three identical charges of 3.0 mC are p;x6 tze)z r0dglaced at the vertices of an equilateral trian6t;z xde)rzg0 gle which measures 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 what pow)y3xmg86sn jiv-c.q int, on a line between the two charges,6nc)3v mqwx -8.i jygs 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 o h74qp, (* u.mgmzzt7oxzb d7and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third 7,mz.gbq u7pz4*o td7( hx zmocharge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where i0 -ckl*2*czyedxn);3 bc cjq can a third positive charge +q be placed so that the force lx3 * cjcqc*c20ezdi-); nkb yon it is zero?

  A copper penny has a mass of 3.0 g. A total ofq 6; er;o):(ho ue w/fi(xecgl $4.0 \times 10^{12} \; electrons$ 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 ork: .m1fx nj6gravity by the attraction of a fixed proton some distance above ito1frm :x6j k.n. How far above the electron is the proton?

  Two 0.20-g metal spher j7 a01xnee)cet a1z4xe5vd+)y+qxgq es are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces theeq)c y v j1ax e+g0x+na4 75z)dex1qetm 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 of66a-z/ g rz.1txwlbh c the electric field at a distance of 1.0 m from thel6g1w z6h zbta .rxc/- nucleus?

  What are the magnitude and directwxvdtv 7;pdeiii737 yg2(b 5x ion of the electric field at a distance of 1.50 m from a 50.0-nC chargepedgw37idt (; i2vx 7bivy75x?

  A 5.0-C charge is 10 mxmj+qx8q1z vyl4: r/m from a small test charge. What is the magnitude of the electric field at the location of the test chazx4m8:j q1 +m/rlqvyxrge?

  A 5.0-C charge is 10 m from a small test charge. What is tf8mgf .+-urr 8x auqt1he direction of the electric field?ufx ua tfg-8r+8qm. 1r

  A 5.0-C charge is 10 m from a small test charge. What is thej4 x 7ym6ns2 n7dn*u,n wsfit3m77keu magnitude of the force experienced by a 1.0 nC cf7kn,4utsy2i7 wu6s n7j*n3dx em nm7harge placed at the location of the test charge?

  Two point charges each have a va+9lkq0; ko fznlue of 3.0 C and are separated by a distance of 4.0 m. What is the electric fiel 9+kn0z;koqfld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mary- hd)2o q; /sp*hmihnk of a meter stick and a -4.0 mC charge is placed ;id/ns*om-hh )qp2y hat 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 stick and a -4.0 bhbcf5qd*wgu,05 d8g mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zd5b*u5,hd8wf qb0 g cgero?

  Two point charges of +3j + h8 blkpi3)j1 5w)uh;loa0o vpcr8q.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is wl8ivhj1 0 bqu;+ 5ap 3 8)jlprohoc)kthe magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the thr8rl6 bgk2h3 -j,dsvbp ee corners of a square of side 0.50 m. The last corner is ,v36 hk-bdspljg b82roccupied 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. Charges are m.v*5dyhh glapiiig3qhx/ p2+r a80 ) 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 (0, 1). What is the magnitude of the electric 2qpia h . xd3g/ ahl +pr8i*hy)v0g5mifield at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a unq5 r mqf0 0puq:jxt8l-v75tm eiform electric fiqu -t7em j 0lqx8:5mqvfrpt50eld. What is the magnitude of this electric field?

  A particle with a ch3u*1x xzm8iq4(6s lsnnz3 hobarge of 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 plr uhyb2ff ( .szf-vr,(aced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball fs,(hrv uf.-y( fzr b2for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placedc.buh/.ny. xp inside a uniform electric field, and is suspended against the force o nh .c/xpb..uyf gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cmg+hajfg86 r:3 fvkpx(tu s2shs )yg+* carries a charge of +2.0 mC. What is the magnituvy fsg)+j6a fk8h(xtr2h g 3*:+ ugpssde of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries : qttp ik0lo3riix0/:vr:mkrim-5 g2a charge of 3.0 mC. What is the electric field 6.0 cm from the ceor2:kivptimkr-i5 tm 0 3riql/: 0gx:nter of the sphere?