State the law of conservge)4 bu g.xa4 qlkod (kob2(a:0olp:zation of electric charge.

  Is it possible for two negative chaj:zk/ hb ( /zw w8/(m 8/abpt/gepizpjz+ xy,zrges to attract each other?

  Is it possible for a positive and a negativegkyfxs8j:h, p y4 (/if charge to attract each other?

  A glass rod is rubbed with a piece of silk. During4s5l gfl 0he fj.lo01w the process the glass rod acquirl4gsljh.w folf 001e 5es a positive charge and the silk

  A proton carries a

  The model of the atom shu: t81,7l.y5p2hyu-sfzaofjl sf2h wows a

  A neutral atom alway,6/ 2lgdfm5u qrz cip3s has

  An atom has more electrons than protonsq0:heq i1nd5d. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are ref.z ibvt (8tz: qk3nce/erred to bec(v ntk:.i 83qzt /zas

  Materials in which the el x2nvt4hq0 k((93p grvtt:w kxdo76 leectrons are bound very loosely to the nuclei and can move about freely within the material are pk3tx7 (htxvdkwnr(:6 qtg2e vl904o referred to as

  A negatively charged rod is brougu/:b h-voi(mtc -6t fcht near one end of an uncharged metal bar. The end of the metal bar farthest from the charovt fmc-b-t/c6u: i h(ged rod will be charged

  Sphere A carries a net positive charge, and st m8,ip rwhqy((zi,ti:5ho,b phere B is neutral. They are placed near each other on an insu(h,rt (tz ib,io8ih: m5w y,pqlated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosco-a.sg.ihp)x1v 7;vlf f0w nbype positively?

  An originally neutral,q( 1qh3t w,le4 btxheps*7pt electroscope is briefly touched with a positively charged glass rod. lhqt4bpe,7(tt* p, s1wex 3 qhThe electroscope

  An originally neutral electroscope is grou .(pok ndi -6wybtyb2b9ysr57 nded briefly while a positively charged glass rod is held near it. After the bb.(76-5nystkro2b py 9 yd iwglass rod is removed, the electroscope

  A positive object touches a neutral electroscoj my;l .b7mb-spe, and the leaves separate. Then a negative object ;7m -lysmb.bj is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged obj+0jp : /kzttsr//(kuzfa b 0uyect 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 thkjuar fyspb:u/0/(z+ zttk 0 /e 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 consta,zuy;ro.u c2tk15fnt w0:,py lvj (bknt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fir4wdukwy d/3b4gpw;;ot/i s )mst charge is larger in magnitude ;w3 ;owk4 i /upt4)bddm/wgsythan the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nea9nz)j52.bshd n/ js4+ ykw hgkr eac5zwk /hjs4 gy9).j2nns+kbdhh other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each othes:cy 9q, pzw/pr with a certain force. If the charges on both objects are doubled with no change in separatio qs/ywp:,zcp 9n, the force between them

  Two charges are separated by a distance d and exeu)n5yqd:wogub*qnj,(,xo 2jrt mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual bujo:,*odwqqy, u n2j5(xng) forces?

  Two charged objects attract each other webl( xy 2f3*5+c jdacyith a force F. What happens to the force between them if one charge is doubled, the other charge is trip2ycj5fx3by ce+a* d(lled, 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 separated by a distance of 1.0 m. What h r5*hl z tfcrqz.g7:9nappens to the magnitude of the force on the proton if a second electron is placed next to the first electr *hqr.z7 59lft:nrzc gon?

  An electron and a proton are separated by a distance of 1.0 m.uwjag:0df*kb v*maxz h8a81he3; b 6 ut: wf0w What happens to the magnitude of the force on the firsu ah8:d ukjg w*0 *mf08 xa63zw b;v:wt1feabht 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. Whagcwzf 61bcu:y * 9eb6ct happens to the size of the force on the proton if the electron is moved 0.50 m ybg6w 6c ef*9u1zcb:c closer to the proton?

  A point charge of +Q is placed at the center of a square. When a secotge:5+ okk bzr*c* v rwc(bi+*nd 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 acting onrccz gvte kok+r *i(w+*bb*5: the positive charge at the center of the square?

  A point charge of +Q is placed at the centroi 27yv/ r29gp ws(wpevkd of an equilateral triangle. When a second charge of +Q is placed at one of the trkgp 9r wvswv/p2y7 (2eiangle'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 j7z ;, tqcq 3n)5da.p2fpy7+mmgd3d mjpwl+v is not a vector?

  At twice the distance from a point charge, ul9 muc pf1,0)xtad;wthe strength of the electric field

  Is it possible to hai ;av/:cau,hxve a zero electric field value between a negative and positive charge along the line ;ha c/vuxi,a: joining the two charges?

  Is it possible to have a zero electric field value between two positive. m z7atarik80 charges along the line joininzkm.a0i7ra 8tg the two charges?

  Electric field lines near psitb( otpjt6u j0eh7xa )0ive point charges

  The electric field showncxbh+0 z;4pzqe6 zh,j kc 7o6v

  Can electric field lines inn rbxyl4p+-s*.v,zvaku*/x fu+ v i8 ltersect in free space?

  A solid block of metal in electrostat90xd6 e) ojvccic equilibrium is placed in a uniform electric field. Give a statement concerning the electric fiod)0xev c6jc 9eld in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameterssv9 fr,w mq0n; s(5vs *y5nkcd are each given the same charge, the electric fq rs(m v;fc,5sw0n*yv59 knsd ield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wood :tbuvdddz9ms /r xj+l8 0y/8t .gc,s*yfj0i ben table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on th0ls y.:i8 zm,x9* jdj+ b/ b0ttry8sgud f/dvce block's top surface?

  If a conductor is in electrostatic equilibrium 2u ,9ikt qi.arfbrkr.;nrb*- near an electric charge

  A positive point charge is enclosed ing17hpzkmz9 b. a hollow metallic sphere that is grounded. A m kz9z1.h7pgbs compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of condggwi i./i v-s 3a1hs56w adz,rvpf3 :xuctors in static equilibrium.

State Gauss's law.

  The charge carried by one ;kxlr g )dty*0ql )8nmelectron 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 +i9 rwra51 yjx02.00 mC. How many more protons than electr r yj0iwxar159ons does this piece of plastic have?

  What is the charge on 1 kg of protons?9loqcy )p;radsr/.:th (m 4w r:8oz hg

  An atomic nucleus has a char*)l 3yfr ,b63jwlomu oge 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, havee-*q4 ch yke9m charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force ckm9 e4eqh*y- between them?

  A 1.0-C charge is 15 m fr 32hit;v nhszo..kdw3ah- g *vvll,;rv3k mt:om a second charge, and the force between them is 1.0 N. What is the magnitude of the second cha.hn-sh3a 3,wk23ti tlv;kmg r*:d ovvhlv.z; rge?

  Two 1.0-C charges have a force between them of ffm 4 :wa(vo ex*id:pm;. d3mt1.0 N. How far apart are they?

  The force between a r9j3.1wibo9 ncn 8a ur$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initialgs: c,r,r; pbu0zyos ;yg q;/hly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cmuzb y:;o/cs; ,rq gg ,sy;p0hr, what is the electric force between them?

  Three identical point charges a4; hyd) m1kgims/-x iof 2.0 mC are placed 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 atk hmixm/da )1g ;i4sy- the origin?

  Three point charges are placed on the x-axis. A charge of +2.ko pe f+.iek;(0 mC is placed at the origin, -2.0 m C to the righp+ ko.kf iee;(t 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 charge at the origin?

  Three point charges are located at the followq:)26: jwdb7wa lc qtning positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x =ct)dw6q jwb7 qn:l: a2 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 placed at the cent5 h; q4rxxum6o. 5cxxver of a square, and a second point charge of -Q is placed at the upper-left coxc6r.x m x5q5;u4vhxo rner. 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 = 5.0 nC is at-qotj78 wus e8 (0, 0). What is the magnitude of the net forceos-qwe t8u78 j on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC izq(dc ir /- 8q*,pjovj3hd kf6s at (0, 0.10 m); Q3 = 5.0 nC is atovz6jf(ckd/,8pq- j h3*idrq (0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vo.1/np ux,d :fg z grrgo40vx0ertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any oneooz: vg/xr00 p.,4gufx1gr nd of the charges?

  Consider point charges of i7fojkqiu* +)pe 9mo 4sy(c9l1p b3 cw+Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be poipu1 +cm ke93bof4*yw9oq )lsp 7i(c jssible 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.;(lo-m (tqnz z0 m. Where on the x-axiz ;qt(ml n(o-zs can a third charge 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. .skk fq3 v4b4f)n2dyx Where can a third positive charge +q be placed so that the forn.3x4y qbk fsf4 vk2)dce on it is zero?

  A copper penny has a mass of 3.0 g. A to7q 4mb q42ubeftal 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 for9 b:9t efzgbt1ce of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the proton?ftt 9zb:e9gb1

  Two 0.20-g metal spheres are hung from a common point by nonconogn 99g*q0zn,lbdh -j ducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forch*-, n9jb zlgd0 qngo9es 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 the elecyfod /e iseu y*+ f**dal*u3)iad0j r4tric field at a distanlu3eo/** jiy )**fy 0 dai+a4rfdsude ce of 1.0 m from the nucleus?

  What are the magnitude and dioy41rgl1a uan h brpdk :./0;erection of the electric field at a distance of 1.50 m from a 50.0-n1nku 4 a;0hderl o. br:gy/a1pC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude vm9 xn5m/oj6vm43xg bof the electric field at/ jom9xb3v5g6 mxvnm4 the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the difua-36-m(mxpfj ox e:u.)ylxrection of the electric fielamo(:-6jx -mf. euly u xxpf)3d?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudrn)nuqjx3hl1,:x m*w2 prgkda 0 f1w6e of the force experienced by a 1.0 nC charge placed at the lo 10nrax)fjgh*l1nq6:d , wkxmrp 23wucation of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a:zsb *kbm)i8rowka:;z4qnmxb1 5vm (nqi9y: distance of 4.0 m. W* 9bzkravs;b4n(: ky ixmw)nm qb oi5m18 ::qzhat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the ereh ubwfosc jor,u 041:8- 8a0 cm mark of a meter stick and a -4.0 mC charge is placed at the 5jhef,1so80u ru w-:4rcoeab 80 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is plal 5bcjbtm,; 9hs7ys.mced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm hbjm.;l y tb7sc,s5 m9mark. 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 plalsab(qide0g ab2t5 , cejq+90ced at x = 0 and x = 0.20 m. What is the magnitude of the electric fi0 qeab+j 9si2 t ce0adl5gq(,beld at the point midway between them?

  Three 3.0 mC charges arex*yg6ebc+ 8m 6k59xxzp7jsa- w8,bbllezi-w 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 of75 86xg- *leez bw, 8bzkmywc+ lsx-69ixpab j the square.

  Consider a square which is 1.0 m on a zf c/kz/eyk0ffl0b-h;zl 5z8 side. Charges are 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). z0fzf/zyc f 0- zekl5l;8h/bk 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 uniform electr49(ocvxn+brzq6 .p y m:rpm)i ic field. What is the magnitude yo)z( 6brm49q.cv:rnixp m +pof this electric field?

  A particle with a charge of 4.x+9g6(9 evospyqtqn5 .k wd az-3kvx70 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 electric field of 600hr44z e+-9f 8kxe* eumc2*i laph )xbb0 N/C poinzlb9rxu k*4p2 beh+ m -fa8iech*ex4)ting downward. 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. The+zi 4tpp0e6 n9ess9ri; j5ume ball is placed inside a uniform electric field, and is suspend 9pnuzt6 0ieip;9 em5es jsr+4ed 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. Whate.b l,gl hj ,9qnvxd28 is the magnitul8qv2n gbj,e. hd,9xlde of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is thegg: j 5rftp vxb). c8zou)e cc06)zl(h electric field 6 loub jgfc06rtzvcpc))gz( ) x:h e8.5.0 cm from the center of the sphere?