State the law of conservatpf ;hrfl,/yd8ion of electric charge.

  Is it possible for two negative charges to attract each other?*1uxa im9d8u8po)x4z v8 ceyp

  Is it possible for a positive /bs bnm01ow:u and a negative charge to attract each other?

  A glass rod is rubbed with a piece of0dqh;m6)q, n+gng t crhrep. ( silk. During the process the glass rod acquires a positive(q0 +hcr q.gpndgtn;me hr6,) charge and the silk

  A proton carries a

  The model of the atom sh)7zdkdj7 dlk /ows a

  A neutral atom always 6 7d0 txorlfl/has

  An atom has more electrons than protons. The atom idek4hq ;8n2yca0l)go s

  Materials in which the esk4-3gyyilh u h:2ujo3 7 4nyolectrons are bound very tightly to the nuclei are referred t :uk44l- h3jy3o27nio y usghyo as

  Materials in which the electrons are bound very loosely to the nuclei and c+x4khl g-kg 2qan movh 4 glqk+-xkg2e about freely within the material are referred to as

  A negatively charged rod is brought near one end q0gg:s./uv 3zufeq2 sdswr4 *of an uncharged metal bar. The end of the metal bar farthest from the charged rod willq wgqr 3g * uusvs4sfd/z:.20e be charged

  Sphere A carries a net positive cha+4rbdyq+ u*gda0w z.q0 f hvw4rge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefhdzqb+.* f v 0qd ywr0+wa4g4uly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positive+ 44euoglqh -ho.u5m r8f v81m chozi9ly?

  An originally neutral electroscope is briefly touched with a positivelyt g nk,mtwx )ibq-7r(: charged glass rod. The electr t t-(x7kmbrig:nq)w ,oscope

  An originally neutral electroscope is zwip:,ic,-gngrounded briefly while a positively charged glass rod is held near it. After the glass rod,-n, pzw:gc ii is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaq 1wklfg. q5f*ves separate. Then a negative ob1*kq.qf 5fwlg ject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table.(3vvd11vyv elgbl ul 5:n6s-er9g t9d 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 nes d9vuvl56v rt9ld lg gb1yv(3e1-: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 constt 2h 5e0ah3ahvant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a diz79.p ,m1 (hnlhg qbra;4iqrbni27xbstance d. The first charge is larger in magnitude than. qb qr,17in gnihb2pa9br(lhm;z4x7 the second charge.

  Sphere A carries a net charge and sphere8+gms k-9 jw tlb1tu9u B is neutral. They are placed near each other on an insulated table. Which statement best du ku-wjgtlt9 bs81+ 9mescribes the electrostatic force between them?

  Two charged objects attracmib9m qvl - ;o;rrd(doddpx8930 iqj 3t each other with a certain force. If the charges on both objects are doubled j(v9p d l;ddxm -dro3 80ob;iim9r3qqwith no change in separation, the force between them

  Two charges are separated bx;++.p/a(u kmjl zykiy4sq z* y a distance d and exert mutual attractive forces of F on each other. If the charu(ipq s yalkmx++k z.*4zy;j/ges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects ah u, fjm.3rzmq4t3 w:fttract each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to o4 tuhmwmj z:33f,q.frne-fourth its original value? The force is now equal to

  An electron and a proton are separated by f3/cc e+tqkmft6 qvi* e se-d:h3mo3+a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed n h ti3c6-*3qmsmo+efqt: vee3+k/ dfcext to the first electron?

  An electron and a proton are separated by a distance of 1.0 1.+koeijj *vy 4 *zbgfm. What happens to the magnitude of the force on the first electron if a second elec ojyf i.zb1jeg*+4*kvtron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. g/mt9lp0m4g n What happens to the size of the force on the proton if the t g m/ml4npg90electron is moved 0.50 m closer to the proton?

  A point charge of +Q a9wh gt-m+72)s7 xzfd; cqorpis placed at the center of a square. When a second point charge of -Q is placed at one of p9)w7c2t7dxm s-gfo+; qar hz 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 on the positive charge at the center of the square?

  A point charge of +Q is placed at the (mz wu1dwez(sq ;:zk2centroid 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 charge due to a third charge of +Q plac zw:q;z 1k(esw(d u2zmed at one of the other vertices?

  Which of the following is not a vector?kkw:wkdp; + juu95fr,( twax(

  At twice the distance from a point charge, the strengc: **/l/evv, .bruj7o lipyneth of the electric field

  Is it possible to have a zero electric field value between a ns8;o5 wcr3gll k4 w(oyegative and positive charge along the lilc ys3gl(4 5o;wr8w kone joining the two charges?

  Is it possible to have a zero electric field value betwe d mj+puu)gkl;yof )-0en two positive charges along the line joining the two cha -dup+mgy;ok) l 0u)jfrges?

  Electric field lines near psitive po sgo6dz(d-. +d8glsq nint charges

  The electric field shown alo,l6u t:fh3

  Can electric field lines intersect in free skd+s0g3 mn -kfpace?

  A solid block of metal in electrostafl;v cfuujs; u2 yr1v*:7t27l ydzlc6tic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the blo62vty jvy:lcu;*2ld7szff; l c u17ruck's interior.

  If a solid metal sphere and m bdb)* owxo1nw(.2ska hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the cenb(1wxnsmodwb) ko *.2ter and the surface is

  A cubic block of aluminum rests on a wooden table in y)7: sv brvsjli5h,9l a region where a uniform electric field is directed straight upward. What can be said concerning the charge on they: j) s7,bsvlihvrl59 block's top surface?

  If a conductor is in electrostatic equilibrium ne1y92j*x pttf mcar x3o7a5.kw 8o,wwsar an electric charge

  A positive point charge is enclosed in a hol* be, m.pa9sl8 (biu ic+m6hhalow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric fie .u m,pbheisb+a6i 9*a 8(cmhlld at a point directly above the hollow sphere has

State three properties of conductors in stati ex f3b/it8,bdvl:p6, xluv+lc equilibrium.

State Gauss's law.

  The charge carried by one h5).xl4 iol axelectron 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. .( msdvp)f )x19qch7v7.ftlj zaaa z9 How many more protons than electrons does this piece f.lzhc7a 9 x.mdzv1q af t7(sa)j9pv )of plastic have?

  What is the charge on 1 kg of protonsa87xxkde/wcs8(ib q .; bta5e?

  An atomic nucleus has a charge pnb69b)+ b,m 41/zu ctnszeyw 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, sf.cd818 a13aw0/hv y6v o r/onr7w py/wdvqw have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of6 p8v f/co 1wwoaysv 71/ dw.vr380rq/wyda nh the electric force between them?

  A 1.0-C charge is 15 m from r8s( ()z nhgibudda( a( kwyzx- +o15ma second charge, and the force between them is 1.0 N. What is th-(8dao)1i ((bn kazg5m(sxz yudw+ rhe magnitude of the second charge?

  Two 1.0-C charges have a force between them of:phsx,uuk aj:gd rx:3o6y+s / 1.0 N. How far apart are they?

  The force between a rc-7:n 8 bskvc 1v7gqm$30 \; mC$ 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 1.02c b, vf9 y,blngzv qtgu3/4w3-N force. If they are moved to a new4z3vyv/ 3lu9tcgbb wn,g2, fq 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. The first 9:pq)h tx2fi ycharge 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 direct2)ix qt9y:fp hion of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placlsnunld d-37e6 9sdyh+3 tw 4qed 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 ad+n s3hqt69 wu l4n3d7es-yldnd direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located;jmky1 d9e hh.z- +ng,tgnh1 h 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 isn en1ghzk+ j9,hh1gm ;-yhdt. the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center om6eibc (2 qg enot29fivw4l7/p xte7 ;f 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 thlt6qo v2;ne77i x4iwt( ec2b /9gm fepe 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 (sgwogn .0m1 q+0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is thqg+0.nws1g om e magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.3u luu hg:g/11:h txz(m0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the u ::1uxgtmhzg1h/ul(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 equilu b ay06-qege2ateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the chargg2a - 6y0bequees?

  Consider point charges of +Q and +4Q, whichpg+cy9 d*4/n dp6 el*xf2fi vix9ih+n 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 electrostiginff+ 9 h/pvpdlx *6+*yd2n9xce 4iatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is xi/usao) rx74xh)p9he*m 3 b( t/yamy at x = 4.0 m. Where on the x-axis atx e/xa b*4 mmups(/ h3h9 )xyo7)ryican a third charge be placed so the net force on it is zero?

  Charge +2q is placed at thco( +m kx-7axtigrn d1gx /y::+slp4c e origin and charge -q is placed at x = 2a. Where can a third positive charge +q mt1gkx g:4xl n7o:c- d( i+x+cy/prasbe placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. :f,-to / f,u1ht )zygv+*oadg9wbnws 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 bykqhcggm v,)9*il y /(p the attraction of a fixed proton some distance above it. How far above the electron is the protoy,( 9m kg/licgqv*hp )n?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thrc zsgwnm u7onau:, .km ,2rc c-(z.*zeeads which are 30 cm long. Both are given identical charges, and the electrostatic repu u2zz,,n:a7nukco m(zc.g r-mws e*.clsion 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 8ril r lf(mq( m +.ojzwx:gin4(5hdc 3the electric field at a distance of 1.0 m from the nuclwr4q3 m(l5nild (oi gx+.mzf 8:cj( hreus?

  What are the magnitude and direction of the electriczy q+ me*)(qeir7jas/ field at a distance of 1.50 m yzr ( )/qim+7qaee s*jfrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. h t.zkt kl7m)v3;ut.w What is the magnitude of the electric field at the .)37uv w;.k mz ttkhltlocation of the test charge?

  A 5.0-C charge is 10 qbx3uhx7t 8h .vyin),x*x fgn6nc + z.m from a small test charge. What is the direction of the electric +cx7y )v3uin t. fx6*bnz8gx,h. qhnxfield?

  A 5.0-C charge is 10 m from a small test charge. What is the ma :+q8redxk3 wg3uscrnb 44u)sgnitude of the force experienced by a 1.0 nC csw)n:rcgrq e 38ksuud3 4bx4+harge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distanc;ctv39 i p5qyws-(lmce of 4.0 m. What is the electricmt p qi5y-cl(3wv9;sc field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 ).8ae x yqgg/hcm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric g.)h aq/ x8ygefield at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stc yp7olqaz/ jrle+ -71ick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the ejyl /qa oc 7er+-pzl17lectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 mi ip+4msyu 28t. What is the magnitude of the electric field at the pointi+t p 4mysiu82 midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. T ozul (xwwus.zz8:d 14he last corner is occupied by a -3.0 mdo su(:lx 8wu wzzz1.4C charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a (t391meohrfn -la 5/mnjpog /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 ojha m n(59r-3et1l/fgp /mon 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 pl b6jtbj ;g*k0 hip:ntto uq;(,f/qpy+aced in a uniform electric field. What is the magnit hj0;ut : i bj(t,;gq*n/ kpqby6po+ftude of this electric field?

  A particle with a charg8y 14zo*bs6ltfwn* vme 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 placeduhkbrm(+ c; a.lfd6q 8 in an electric field of 6000 N/C pointing downward. What charge must be placedmq+f8(c.adu 6k;lbr h on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrig l) ivhfi8s/ aob(0*li3v mv*.yzzr7 es a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravi/*sa)mv8z h(i l7rl3oyi 0b izv .gf*vty. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC.zz nr3* g.eaq5 What is the magnitude of the electric field 5.0 cm from the sphez.ra5n* 3q gezre's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wh+- 9h( khsza:dfqio)g at is the electric field 6.0 cmhq hozd (-fk+as 9i):g from the center of the sphere?