State the law of conservation of elef: 8l6y0ufuveje;lr z : bg*.pctric charge.

  Is it possible for two negative charges to atts 3wzea+6b .b,bvltx)ee(q vow ) bj67ract each other?

  Is it possible for a posit ,l3r bv:k7wq;ue tzx: :7ajmpive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durik z)k lwoo2an-.hm83gng the process the glass rod acqwakk)lhgn3 zo.-2o8 muires a positive charge and the silk

  A proton carries a

  The model of the atom s (3/kzd.hkgohmgu(8j hows a

  A neutral atom alwayd-2ik x3xy4d hs has

  An atom has more electrons tz1/myges0 m4 9han o u(d+2palhan protons. The atom is

  Materials in which the electrons are bound very t3ew8s f 1gol*ppd 7.smightly to the nuclei are referred 87o*efgwm1 3dps.p s lto as

  Materials in which the electronv j htkmr9q65 6c mnb(ujf7m-8s are bound very loosely to the nuclei and can move about freely within the 6 m7 rv5b mcnuk(f89 jq6jth-mmaterial are referred to as

  A negatively charged rod is brou m.b n9o/wzb+kght near one end of an uncharged metal bar. The end of the metal bar fartb 9/on .wb+kzmhest from the charged rod will be charged

  Sphere A carries a net positive ce 74uhv eit:*dharge, and sphere B is neutral. They are placed nea* vd4e:etu ih7r each 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 electroscovina7q) q )lpwan 9y6;pe positively?

  An originally neutral electroscope is briefly touched with a posit2:i niu*+qj 4uq.zi auively charged glass rod. The eleu4i2u: za nu*.ji+qq ictroscope

  An originally neutral electroscope is grounded briefly while a positivcv4h18 :up::fwx ta n xx;s)ghely charged glass rod is held near it. After the glass nwxh xc ;t18spvauh :4:)fgx: rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate.4t15f 9xicvst Then a negative object is brought near the electroscope, but does not touch it. What happens to the lea9 x145tsvcfit ves?

  A large negatively charged object is placed on an insulated table.*-sl rl mk/qtf0) ktg; 7/ohjq 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 doer -jht)l tqm7kk ;f0/s/gl*qos either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Cogg vwt u /25tzh(m7o0culomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger u 9oke +y.t.wq(wu m/din magk u+e.9.tm/do( w quwynitude than the second charge.

  Sphere A carries a net charge and kd5bmyt-qxs ,1h44x 9 sjp1qzoh2e*w sphere B is neutral. They are placed near each othkw-s4p sh,mt4o*2 5bd qj9e hzxxq1 1yer on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges on hfo13q- n5nyu both objects are doubled with noynq3o 1 nhu-f5 change in separation, the force between them

  Two charges are separated b:n*hxn/ ,nin (l asv)g1in.+yr n 4htdy a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forcx n* ydhisr h4na1v.gi,:+n(n)nl/tn es?

  Two charged objects attract each ot).k avk1slu g/her with a force F. What happens to the force betwe k)1vks/u ga.len them if one charge is doubled, the other charge 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 separated by a distance of 1.0 m. What he rkt.;+q :mciqr :m9gn sw42nappens to the magnitude of the force on the proton if a second electron is placed next to the first electron?imwk94 q c: sg.r;tn:ne+q2 rm

  An electron and a proton are separated by a distance of 1.0 m. yts*u 1k73gwwpa3u8w What happens to the magnitude of the forcp33suuy 7t aw *wkgw81e on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separatedm* ep3 (2tif04pdqev r by a distance of 1.0 m. What happens to the size of the force on thepe24fpev* 30trid( qm proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at s+ s+c*twlgnd3o* 1t zthe 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 of 2.0 N acts on the positive charge at the square's center. Noc ng3t** 1szlwot+ d+sw, 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 equila 6qerf:ikm+; ij3eddra (:k( iteral 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 charge due to a third charge of +Q placed at one of the other verticesi e r:imre:jk k6;(qd(+ di3fa?

  Which of the following ivche8tq :h5:v s not a vector?

  At twice the distance from a point charge, the strength of the electric fqd(roew)si: .+f gr(wield

  Is it possible to have a zeroqga+c vpswe35bl. (w 0 electric field value between a negative and positive charge along the line join5bgl3cw.pvqe sa 0w+(ing the two charges?

  Is it possible to have a zero electric field value b, rn63xamoe 6o9 zgdh6etween two positive charges alx3zda6 g,e9m ho66r noong the line joining the two charges?

  Electric field lines near p d3:0qwh+kejrsitive point charges

  The electric field shown ) u u08t7z/oxzt ocz-c,vb6lg

  Can electric field lines intersect ik0f)s 0 bon;+b5 ofhg yyoz*+qn free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elect-1c moc063pq pplhpx0 alb65fric field. Give a statemeab0m6 ppcc-l5 qxfop3p1l 0h6 nt concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere ofwl2: im/fs- fr .,qlon equal diameters are each given the same charge, the elecwls:m/ n l ro2qif,.-ftric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region u kx*5b bssj ;0*blb9owhere a uniform electric field is directed straight upward. What can be said concerning the charge on th; b l9 *0kssubjbo5*xbe block's top surface?

  If a conductor is in electrosg/qug/ 4 w5scyxr h7dbvk65 f2tatic equilibrium near an electric charge

  A positive point charge is enclosed in a ho5 0vgri ikc0*:9bzz j m6sjs.(4uszin llow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directlb5jis i9s:6sm(z.i0cj0*zvrgn 4zuk y above the hollow sphere has

State three properties of conductors in stati-d ,, . f1f ogmkr3)ps(kgirsjc equilibrium.

State Gauss's law.

  The charge carried by one electron)s+tuq, zq. r 8d3i dkt:jz,tkcrjg; 4 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 c 0ph15i x+jmh d0m7 gqlm0ck)+2.00 mC. How many more protons than electrons ix)1q pkd0mgcmj h0l57m+0hc does this piece of plastic have?

  What is the charge on 1z30 yayt ac24f kg of protons?

  An atomic nucleus hangs9ctj:w-t 0(2zkp agogf4(ux+/vus a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepnmjqm9 8w cp hry25honez(lr*:x ;6h: arated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forcwzqx :lj ym(nohe5* r p;c9n2m:6r8hhe between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 2wn.fn jwl m 1px)vx:31.0 N. What is the magnitude of lpwx jn )mn.v231:xwf the second charge?

  Two 1.0-C charges have a force y m28/i6et acf g*gs-mbetween them of 1.0 N. How far apart are they?

  The force between a dhtt1r;y;-)jf3 j vmf$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm a d.j8rs2;r. ti gonw4xpart, experience a 1.0-N force. If they are moved to a new separation ofi o. wxdgtr.2;r4 sjn8 8.0 cm, what is the electric force between them?

  Three identical point charg 5+6hro9ba+ 7jz-pht qitg4 b26yvbn ves of 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 th6 9pvaqn -big7t4r52+b y6b jhhvozt+e 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 thp,yx2wim z2jz;1ki /9 ue0u hke 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 andi x; ek29y2ziuj pw,mk0huz/1 direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the followinhwids)rta 30-9:n: 0zvqv xgtg 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 the magnitude of the force on the 3.00x wd:-:vg 09rnzsi t)hv0t3aq-mC charge?

  A point charge of +Q is placed at the center of a square, and a second poc- 0: *k truamgv/hs2ik q*.kjint 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 is placed at the lower-left cornsv /*ta :0 hrqckm*kji-ug2.ker?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC -j;.it raa0.: enteuz is at (0, 0.10 m); Q3 = 5.0 nC is at (0,i:zr0a j e;au te..-nt 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 m* ok.iwnfj*1-owu40 fj4w mwm ); Q3 = 5.0 nC is at (0, 0). Wh4ojww.i * o*wm1u 0w4fnf-mkjat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an eq 2j0,;jre;xineipqt *uilateral triangle which measures 30 cm on a side. What20 tqpn,ijx;i*jree ; 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 p)j b lw.njvoiqh:;np0y n76/moint, on a line between the two charges, would it be possible to p;ny7nl0b phj o)q./:wjinvm6lace 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 digt m4;4)+ts,8x f ;r+qq :msyatckd+9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is tsdx)4q4fs, ;gac+ dt+mk;irq8 : ymtzero?

  Charge +2q is placed at the origin and charge -q n;5fywq r6rglo40vy-is placed at x = 2a. Where can a third positive charg qrf0-wn5 6 lyryvog;4e +q be placed so that the force on it is zero?

  A copper penny has a mass of 3 c0mjgq;1bm+t.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 attra. c1b ffemx4a3ction of a fixed proton some distance above it. How far above the electron is thb f34x ca1em.fe proton?

  Two 0.20-g metal spheres are hung from a common point by noncondm9g4 hjvbqg) (ucting threads which ar (4gjgb9hv )qme 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 +40e. What is the magnitg6)q ukug3f 72w ;gvuzqw 4uh;ude of the electric field at a distance 3;wkq6 g4z)qf2u7uhg uw g vu;of 1.0 m from the nucleus?

  What are the magnitudeqrj0l6zpb5; k+wd1ps(bmt 7 v and direction of the electric field at a distance of 1.50 m frwtpvjrlz6+ qkb;1mb ps05(7dom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of th42o 0,kawjqdu 5rz)j ce electric field atdjqw5a)0 zc , koru4j2 the location of the test charge?

  A 5.0-C charge is 10 m from a smal36ebf4 .js .e auiw;lnl test charge. What is the direction of the electric field.l6ne. suw ji4f;3 eba?

  A 5.0-C charge is 10 m from a small test chatfkr7 4eo z4iu2l,ui1c tjt06rge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargi46reu42i1jkt7l tf zco,tu0 e?

  Two point charges each have a value of 3.0 C and are setnn9:8;z axkaeq :e 5f+mo 5typarated by a distance of 4.0 m. What is the electric field at a point mid8kya5o9fne5xqa+ :tntm :ez;way between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sez-zho((+4 yb6+s sqxrwh9p a f)xm6htick and a -4.0 mC charge is placed ahq 6xhs(ex-zmf9 zbrohpsay++w)64( t the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placeprklrt-ef 3rx*..3 yfd at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joryx*r.k 3f3f-lr.p teining 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 = rsij3yjn x;eeva*2(iy: v*t . n0qq1t0.20 m. What is the magnitude of the electric field at thet i s0j:*xi;qq r3njyn2 1(.ev ev*tya point midway between them?

  Three 3.0 mC charges are atzod)* dv(wy 0:d-9pam4w xuic 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 f ud-( zcap)4w 9xymd*:wdio0vield at the center of the square.

  Consider a square which is 1.0 m on a side. b9zk 3r notgl++qwd4 1Charges 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). What is the magnitude of the electric field at the square's cw9lk1oz+qnrbd+ 3 4 gtenter?

  A force of 10 N acts on a charge of 5.0 mC when it v,zq(nf4: j/tse7igs cade2 -is placed in a uniform electric field. What is the magnitude 2 /eaz-,fiq(7:se jdstnc4v g of this electric field?

  A particle with a charge of 4.0 mC has a mass ooz0+i-mdgt d6f $5.0 \times 10^{-3} \; kg$. 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 6000 N/Cc 1,z,zomdm2 w.kcv7g pointing downward.zz, wmcoc,7g1 k.2mdv What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrierlb,h 3dzn-g21l70 bhig om/h s a charge of -2.00 nC. The ball is placed inside a uniform electric field, al -1dgnbgohmb 73/, 0ihhlrz2nd 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. What is thx:: h(qcvwuio7x n *sj 9z.h1we magnitude of the electric fiel:v xx ho1*i9:(hn.qw7czjusw d 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What ir)i9-pmpdk0gvl k9 j5s the electric field 6.0 cm from the center of the spklj5m0 di9kg-)p p9rvhere?