State the law of conservation of electric ynv+zchy( 9w1a/la4t charge.

  Is it possible for two negative charges to 1tw2sc; .w uejattract each other?

  Is it possible for a positive and a negative charge to at uptk /3e 1ubbut 30tb.9-8cnc yfhqm)tract each other?

  A glass rod is rubbed with a piece of silk. During the o1xustdaw h 5 -gwxvb8p12o;*process the glass rod acquires a posit- ab1dwho *xuvo1x 52gw8;pstive charge and the silk

  A proton carries a

  The model of the atom sho*gcz6(+g xy 3zmgqyz 9ws a

  A neutral atom always hasscq//t u;o 3;x rgs0js

  An atom has more electrons than protons. The atomnxs,0hx t0z.m is

  Materials in which the electrons are bound very tightly toqnx-(a+f1qt n the nuclei are referred tt-+annxq f(1q o as

  Materials in which the electrons are bound very loosely to the n 8; jzk(qh3wr:ddyg m5uclei and can move about freely within td zy:8m;djqh gr3kw5(he material are referred to as

  A negatively charged rod is brought near one end of an uncrgo,5vjrt v ewb3y(./ g,9g zuharged metal bar. The end of the metal bar farv3tgvbyz59 g,/jg.wu(oerr , thest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphehkq-r,6 obef 9re B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correeq6hk 9ro, b-fct?

  How can a negatively charged rod charge an electroscooamnn pr cg2t3ox.mw7f; 4 74gpe positively?

  An originally neutral electroscope is briefly touched with a poa2wbp*a hi f;5sitively charged glass rod. The eipa; af 52whb*lectroscope

  An originally neutral eleclq 2 /tvpzy2,1krju (itroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is remov2,ip/ zv21t lyrju (qked, the electroscope

  A positive object touches a neutral elect 6g ;u)n5yevexroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to5yeu;v 6engx) the leaves?

  A large negatively charged object is placed on 6efjpo bou3-8 ogq7al:i3qi,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 the negative object. What is thqga83o 7ou, ifip-l oe3:q 6bje final charge on each ball?

  Charge is

  What are the units ouaf;t( qw6z6fw qxdi;3to( f*f the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by-muxq7:d*hs7*xzf cn a distance d. The first charge is larger in magnitude than the s77 c*qmnfhxud:x- z* second charge.

  Sphere A carries a net charge and sphere B 9lr(/2htk7y/ osxqd h is neutral. They are placed near each other on an insulated table. Which statement best describes thesq (h h/dtkoy/r 92l7x electrostatic force between them?

  Two charged objects attract each other with a certain forcosxt2 u+gh.ccf ln4, h 9f6z2ue. If the charges on both objects are doubled with no change igshl+ c9 xnch,2 u oz6ftfu.42n separation, the force between them

  Two charges are separated by a distance d and ey ; 3h -s)er*040 pkypdvgk:h ypzblw0xert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, whg zhd0ylrbph*k 4swvp;y3- :key 0p )0at are the new mutual forces?

  Two charged objects attract each other v ,*u.hvnf i9ewith a force F. What happens to the force between them if one charge is doubled, the other charge iu9*v .vineh,f s 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 d-u,x d8j u somp79pz1uistance of 1.0 m. What happens to the magnitude of the force on the proton ifpox p ju17m9 ud-,zs8u a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance l1z9f9s +ezzb;0fp uiof 1.0 m. What happens to the magnitude of the force on the first electron if a second electron i1 bz;zz9fu0 s+eflip9s placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What h-u v) 0l7*p ofon+mbplappens to the size of the force on the oblump vl) o* f-0+7pnproton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the yv020xizm)bdw3j 6itcenter 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 square. What is the magnitude of the net electrostatic force acting on the positive charge at the center of the square?0)iw 0t 2j6zyxdbim v3

  A point charge of +Q is placed at the centroid of an equilaterh(m9b: l 8xcm0sxs 7x9n,afe)f0neubal 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 magn7,(x 9 xesffb0 mns)um0hbecl x8 :a9nitude 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 followiney 6, ev- zxu0 mzzg:;k)lcj:bg is not a vector?

  At twice the distance from av-7:cx7 d jfj2dwpu-lrmx mmvr:t t73/fcy// point charge, the strength of the electric field

  Is it possible to have a zero ew*f;0rie q 7v csxzidg4b4:5y lectric field value between a negative and positive charge along the line jo7d civ4if4qbw:rs 5yex0 z*;gining the two charges?

  Is it possible to have a zero electric field value between two positive chargespekbd.4;7j fbu u * i:u3onz-c along the line joining the tn.zo*k buf e7b4: 3ipcd juu;-wo charges?

  Electric field lines near psiuavn pow+) /e*wb46x wtive point charges

  The electric field shown u6mox ;2oeu(b

  Can electric field lines fmar:4 eluv ; +z,-re8xbi)im3un;e sintersect in free space?

  A solid block of metal in electrostatic equilibrium is placed indh,wks rwl+d:it6b rmg1eh *14o/u3a a uniform electric field. Give a statemen1 mhre 1g3l 4d oa/th+b ki:rd,uw*6wst concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diame21u .,hkpojuppovda lgn93ij 31+ , rtters are each given the same charge, the electric field (E) midway between the center and the surface ihok, pr211 pjuo+giu jp.3n9ta3, lv ds

  A cubic block of aluminum rests on a wooden table in a region where a uniform ezjsktq 0)*z6 ok6nsx7ttgm-,jp9 qy3 lectric field is directed strank -q zs,630 m7kg96y)*jptsqot tjxz ight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equ ydv8/*sgw1 5y,o5(p,qc,y 0j iidc 2wbvtobzilibrium near an electric charge

  A positive point charge is enclosed in a hollow mj1rit ke.vvj34v 4 su/etallic sphere that is grounded. As compared to thvtu v i13s4j ke.4/vjre case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conducp,apkm c88lybp8kqk8 ;:t d,mtors in static equilibrium.

State Gauss's law.

  The charge carried by one e;hro b c:7ntgcg)1f7 vlectron 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.hyl,+o)bsm u ) How many more protons than electrons do ,s))lobm+hyu es this piece of plastic have?

  What is the charge on 1 kg n.3qd+b xnhm l mx :5q,rb*v/tof protons?

  An atomic nucleus has a c +9k1n pkjxig3cni )u)harge 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 hpa7mv ef 8e1ydq;(c/and -4.0 mC, respectively. What is the magnitude of the electric fyq;7/8fv pcd1 heeam(orce between them?

  A 1.0-C charge is 15 m from a second charge, and t , igtqzj7vtd,m2ns66he force between them is 1.0 N. What is thz7i 2nm,vjt ,t 6gs6qde magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.04(ahxt,se-ae nupf)v 9 56pcz N. How far apart are they?

  The force between a p(i31uz ar3zb$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially ;e4 su5 n9fep+xka 3zz2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the f4snkz59 aux ;e+3e pzelectric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firsgi2 b g-sh,sdr: e;,gbjo0,9qnd;vr bt charge is at ts0io ; -g,ns 9hb,2ddvgrb:b e, jg;rqhe 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 the origin?

  Three point charges a,br sm)z s xc9xbwh+6/qn;0sure placed on the 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 mmzbs/) h; rxb+ qs6un9,xs0wcC 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 following positions: Q1 = 2.00 mC at x 3fs1y-xav 2xqgqqj;+w,hpq abm1e kxd1 4 y+0= 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m.k1e0bj, 11xaq a 2xhqvy gqdws+4+ m;x 3pyq-f What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the cente8o fq hhi ywlj15o,t46r 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 oj 4o i,yht1ow86h5lqf n 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.; xrri8p5y f70tivfq1 a92lp y0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). qrfyp pixyr7a8ft i50 ;91vl2 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); Q3 = 5.0g;)cj iy9o+jdea*kb1mo p7;s nC is at (0, 0) 9)ep;odyg7; a1jij m+bk*oc s. 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 vertices of an equilate 8ki-3one w0 spcfb5;d5i mzwa1i61*up; zlxdral triangle which mep0 ;mi 35fo*ie -d1z 5lbkda w 6;pznui1xwc8sasures 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 6 i)ltnvzvh.5 point, on a line between the two charges, would it be p5)zvt hln6 vi.ossible 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 = 4.0 m. Wherh(1m0 2 jy pvt)0xqgepe on the x-axis can a thjv 1x m yq)p2gh(e0tp0ird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is plomt;9(0v6vr: jvk hzm aced at x = 2a. Where can a third positive charge +q be plvzvovh mrk 0:9m;6t (jaced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A 9 tacz/0f)tsore0,6yl xa zm: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 oekr ,0nzt,yw ae/rgbq 3:gy +1f gravity by the attraction of a fixed proton some distance above it. How far above the electron is thebe/ yeqr, k1r,y+gn3w tz0g:a proton?

  Two 0.20-g metal spheres are hung fr;d*-gzp6 )qo5 ur j1fxg*deleom a common point by nonconducting threads which are 30 cm long. Both are given identical chp j-r g5 lg1u*d*q)ezdxeo6;f arges, 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 magnitude of the electric f -252g5vaz p dbjen/beield at a distance of-davp2 b25/j ge5ne bz 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dist8-/qp2rtyt wzldl )c 3ance of 1.50 m tl)w2p - /q3dr8tl czyfrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magniet wv*aww oyi4 63v)r/tude of the electric field at the ve oi* rt)v4w6ayw/w3location of the test charge?

  A 5.0-C charge is 10 m from a small test chaaq .0kzj87mhj rge. What is the direction of the eleck8a7 j0 .jmqhztric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnit9(fpa) sl fo-lude of the force experienced by a 1.l)9 f-oa (slpf0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by g9 a 8vjix87dpa distance of 4.0 m. What is the electric field89gavj8 pid7 x at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick 4tlk2ix/ a z6tand a -4.0 mC charge is placed at the 50 ctt l/ax2z4k i6m 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 mete2v/h1wfxdj8l;gr fy5r stick and a -4.0 mC charge is placed at the 50 cm mark. 58lvdfrf g2xj w/ h1;y At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC ani j)l+vueu0 m 0i,ux *,-bejald -7.0 mC are placed at x = 0 and x = 0.20 m. What is ae)uulm xje0-, uj bilv,+i0*the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of st6 k6e/7 kewooide 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of6w oe/ kt6eok7 the square.

  Consider a square which is 1.0 m on a side. Chargevff*dsm 7 +ua(dln3z5sc,m1d s 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 squares7l+vz md,cuf*35 asdf1n d(m's center?

  A force of 10 N acts on a chargewah76 +b4wo2fgj*4ah( rgo kug/am w: of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this e7: a aw+gg6w *b(owfaor2hu k g4mj4h/lectric field?

  A particle with a charge of 4.0 mC has a massu evopte 39nfsnqg3*ie1+.- x 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 6000 N/C poimko js4/4 vwz:z (k/klnting downward. What charge must4l/o z:vmkw4z(jk/ ks 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 ball isqpiga1g7aja*io(:gc 4( 8 hzk placed inside h8aaz1ag*i47 g(:qp( ogj ckia uniform electric 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 carrih;5evm2 (g z q9nz ec/:sgm-t 8oveni6es a charge of +2.0 mC. What is the magnitude of the electric field 55 eenoq/ e6mt; h92g8ng: v-vs(zizcm.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charv/r iu 9pvhc56ge of 3.0 mC. What is the electric field 6.0 cm fr ri6v/c5h vpu9om the center of the sphere?