State the law of conservation ofnas* f73h0-borkwniv) z6 j1e electric charge.

  Is it possible for two negative 7b, vvg4k9tdh9w y2k t3hix9w charges to attract each other?

  Is it possible for a positive and a negative charge to attract efil,try4 iu*5v-j76 n xkki*mhd,wm -ach other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod51e*a5 w r .hriprchx) acquih5hr)x wi*p 5r1r. eacres a positive charge and the silk

  A proton carries a

  The model of the atom s tmi.:a*+whv.- luvwd/+ vs k+xhvte,ww:h -chows a

  A neutral atom alwaysri,ylja. g,o4qk+n 8t o:yx :l has

  An atom has more electrons than protons. Thepz1h e-;b l6k az3qvn, atom is

  Materials in which the elect* e+q.bz*g zncrons are bound very tightly to the nuclei are referred to asczbqn+g** . ez

  Materials in which the electrons are bouf2juaj+61te 7;hyk b ond very loosely to the nuclei and can move about freely within the material are referred 2 6j + h1ta7uefoky;jbto as

  A negatively charged rod is brought near one eph-+:2yani) dnpbxsbylx: /: nd of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charg: )yi p:sa2l+/y d:nh-nbxb pxed

  Sphere A carries a net positive charge, and spherlij,vgiu 1dm)khi *9 n+ic/8te 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 stateme,cm8 )invkl 9i+idhu*i t/ 1gjnt is correct?

  How can a negatively charged rod charge an electroscope xr:j7h )5vqp vpositively?

  An originally neutral electroscope is briefly touched with a positivel n5z ;/hnezvq0w (ng9wy charged glass rvwz/h5 en;qzg9(wn n 0od. The electroscope

  An originally neutral electroscope is grounded briefly/q/ 2dvmk4m(4obr 4 lh u+lzsz while a positively charged glass rod is held near it. After the glass rod is removekq/ z huol/(mm4rvbdl+z 4s42 d, the electroscope

  A positive object touches a neutral electroscop dim**zz/x5gd . vhvx6e, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leavesg.mdd /z x6 *zh*vv5xi?

  A large negatively charged object is placed on npqo;fnn,)y7f 2a to) 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 e to)7)q2p, nno;fyfa nither ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb consta/09 okgp b2l xw7g+zjjnt $k$, which appears in Coulomb's law?

  Two charged objects are sep:jz 9:n9p+1pp9lb,hwexkfdmd :. eq xarated by a distance d. The first charge is larger in magni99 :jdfqpz w kh m+9.p:e1 nexpd,lx:btude than the second charge.

  Sphere A carries a net charge and sphere B is n15kxw.v v1(am15v grg npq v8peutral. They are placed near each other on an insulated tab(p81 ax vqpvggn wr5v1 v.51kmle. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the c 5 fuo7*bp d:iepr7s-f(n)zpvmst:y:harges on both objects are doubled with no change in s5:duy:*p)vfm z-b7pot( fin7pes:sreparation, the force between them

  Two charges are separated by a ry1b4y*n ldt;n5k,z ur:t 8sjdistance d and exert mutual attractive forces of F on each ot yy:nlstbn41 ,8u dz ;tr5*rjkher. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force e2p6h xips7* n3q- x8rjz(djcF. 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 one-fourth its origic86e jrp(x-2n 7qzx h3si*jdpnal value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. Whaebh1 0c1 lcae6xv 4y*dt happens to the magnitude of the force on the proton if a second electron is placed next to the firstl1 ycb401cx6deh eva * electron?

  An electron and a proton are separaths3m* rs*( eoged by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed *3hoes sg(*r mnext to the proton?

  An electron and a proton an3odbee.qq 7- xwi .;g3czok8re separated by a distance of 1.0 m. What happens to the size of the force on the proton if the ele e dk3;q 87zw3goc i.qe.nbo-xctron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the ce;b 2jdcn2sj vjjbd7-sup/o:. k -uwc)nter 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 sd / nj;cbu:u-j b2vdsk2 -jpw)j.soc 7quare?

  A point charge of +Q is placed at the centroid of an equilateral trih- l.3me*mzvb angle. 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 thir-h elmvb z*.m3d charge of +Q placed at one of the other vertices?

  Which of the followi:)oohqe1 u x4myfal8-ng is not a vector?

  At twice the distance from a poi-ir)c fr7 5yqfllpk ;4 af;tpo xkez2c0g8-4pnt charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative ek6c*njtzb 2e d1v:+ land positive charge a :6t*cz + ej2vbkdel1nlong the line joining the two charges?

  Is it possible to have a zero electric field value between two positive chars v *blbm2peg-) ikw77ges along the lbew7g7-2 l ikmpb)s*v ine joining the two charges?

  Electric field lines near r3daoa1/ tm( valy8q1psitive point charges

  The electric field shown)i+(gacgx ; v bxzmi59

  Can electric field lines intersect p:ae7n ciy y*0in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifoip2 7 kho3spo1ff/ 6hdrm electh3f2fs1 /ip 67 phookdric field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow ,jq yv9u ;-5g po qy.kp+wz7qgmetal sphere of equal diameters are each given the same charge, the electric field (E) midway between the centegj q+7ug o,9-p; qyy5v kq.pzwr and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform elw(b muffm*8wb eiz;t2u,er. . ectric field is directed straight upward. What can be said concerning the chef ,u( z.ub.b;t i8mwwmef 2r*arge on the block's top surface?

  If a conductor is in electros fg*e yl+* fycy b8xji,wa*kxm+4+l4u3j0seu tatic equilibrium near an electric charge

  A positive point charge is enclosed in 9q4t6 cusp,f ua hollow metallic sphere that is grounded. As compared to the case withoutut,4s pfcq9u6 the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of7a6m(.tf5 ze0;kl4 f z fjkxo bj,ac,ig/(ide conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electvv/nkncma z9-)k4f -c ron 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. How many .r14atwems- lo .h/ 0 luzxw9imore protons than electrons does this piee.iu x -l/m w.howtas9zl0r4 1ce of plastic have?

  What is the charge on 1 kg of pu4x+gofl .vb e:3i73x p1ui enrotons?

  An atomic nucleus has a chaa/6wwitlb qj+,tp p23+1 yaw brge 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 cmw. 79 nlova:tv, have charge values of 2.0 and -4.0 mC, respectively7.o tnavw:9lv. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second c,*)6oged.s rvl)w:ly 6mnwkqharge, and the force between them is 1.0 N. What is the magnitude of the secon ,n:66kqm od* )wlgw.r svely)d charge?

  Two 1.0-C charges have a fo/ kvwnnk/4+ iarce between them of 1.0 N. How far apart are they?

  The force between a v:ry9nub0yep1,3k bv$30 \; mC$ 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 1.0-Nda7*fe*r uus +io1, fed2 0 l,mli,cxh force. If they are moved to a ielfm,,2a *sudil*d,01hue+ fx7ro c new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are pla,v;l n ro8u0x w:lbq+aced 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 rq 0+nbxu :lva,wl;8o direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on th )qveozo s780o. z:fjle 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 and direction of the ele 0)vqozosze7lj8 f:.octrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC a:4ae; hf/u (hmc bu ez:8ivb)ut 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 3.00-m bui8;bmv caeh)e4z:f u /uh(:C charge?

  A point charge of +Q 5hudip5cew:dawr ;p .zi /n 1/4gtsk8is placed at 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 magnipwdn5 1c 58 ;th r:k/ds api/zeu.w4gitude 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+mtu)eqf*7ciwxijw9su:mi3 tizmq+ i-: p, 3 is at (0, 0). What is the magnitude of the net force on the 5.0 nC chuje ii i397w mitw-x qmu:+3,sq+z *t:m) picfarge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m);egde8mrqsdu5 m4 4 q1(5hyr, n*zc 8te Q3 = 5.0 nC is at (0, 0). What is the direction of the 54ghmqds,8eur q rn1d(y4ecz5e* mt8 net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at thej8b4:7rtihd pp9 g)a v vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the elerh9p:8v 7jg4iadpbt)ctrostatic force which acts on any one of the charges?

  Consider point charges of +Q a.c ;v hw)wj-n/r )qhh 6x3yzxm8jqg/rnd +4Q, which are separated by 3.0 m. At what point, on a line between the )wwg;jz/xqq/rynx3jv6)h m -8c h.rhtwo charges, 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 and a +9.0-C charge is at x = 4.0 h9nnngd hgz)k:c(93w m. Where on the x-axis can hn9)(nhz9:cng k3gdwa third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin afzcq/a usr h;km3-r 4- e-xln(nd charge -q is placed at x = 2a. Where can a third positive cflsh-ke an -3mcr;q x r4u(z/-harge +q be placed so that the force on it is zero?

  A copper penny has a mass ofg;s3-z p/ku7uu,xko sgt 97of 3.0 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 attraction of*u8fh0o d1k dl a fixed proton some distance above it. How far above the e* 8dldfu01 hkolectron is the proton?

  Two 0.20-g metal spheres are hung from a common 6k d ueb2xx2 /+mqm*gtmto i,-point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatim*-g t+bxmi k,mx2ou/t6q2d ec 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 b51lhzo,hcq 6+40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleuszo,bc1qlh 65h ?

  What are the magnitude and direction of the electric fiel+ il6)du.:9px;x nuwlclvyq9rmls -vlj u/ 8(d at a distance of 1.50 m from a : .u 9rdc(n/u l-u+vllyi6pslx )xl9mwv jq ;850.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitud2vn14mo dc.)u bsgmr yl9+)v me of the electric fielg12 4um.r)v)n9yvbmm +s codld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test chara 2lf4 nhqz1..ac z;rhge. What is the direction of the electric fiel2q.h.zz4ca; n1r lhfad?

  A 5.0-C charge is 10 m from a small test charge. What is the magnk,d;/0 1priec2jdr. bk:hb xhitude of the force experienced by a 1.0 nC charge placed at the location of tkrb0 edr1x hbd k/2j;.i:,pchhe test charge?

  Two point charges each 44dc-xoui2tzfv 6vq2 have a value of 3.0 C and are separated by a distance of 4.0 m. Whatzvcov42ftix64u2dq - is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed 5d sb9xak z2)jat the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cbs2k z dj9a5x)m mark?

  A 5.0-mC charge is placed k(tv*ozbkz7l6)0yr(j/in vhg4h q dl3d.g q, 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 joining the two charges is the electric fzg4 / ld, 36i(v rh*qqjh.o0g ykkt 7l)bz(dvnield zero?

  Two point charges of +418/ex t z+8cu+1hdpyfgi )jn -g ztcp3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electricjn8p+z) tpzihc 4g 1efdt/8+uy -c1xg field at the point midway between them?

  Three 3.0 mC charges are at the three corm1lf.ne9hw )sners 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 of the squah)l.s e9nw mf1re.

  Consider a square which is 1.0 m on a side. x/pjgms/kmelt7p igl 228n33 Charges are placed at the corners of the sqkp /s8/2g j mlp3 7t2ine3lmxguare 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 center?

  A force of 10 N acts 3ed 4t9rjd7noon a charge of 5.0 mC when it is placed in a uniform electrojdd7et349 rn ic field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mastdg l.v ::,lurs of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of r7z4jqj)wt9b +ftmbur jd0. 6mass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to buj7m9bqt )6rjj +.0dz tbwfr4 e suspended?

  A foam ball of mass 0.150 g carrs 9 .yka e+7ieeaq);3ec4pf kries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended agc)9;yf4qe+ ee7rska 3i.ek paainst 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 the c - n 7h.wb-i;oxj1yjmmagnitude of the electric field 5.0 cm from the spwoxjjmb. 1yhi;cn-- 7here's surface?

  A metal sphere of radius 2.0 cm carries a c7 :k uo*ohr,udharge of 3.0 mC. What is the electric fir,7uou d*ko :held 6.0 cm from the center of the sphere?