State the law of conservat2x5vwhdc *8 h/7f rbbeion of electric charge.

  Is it possible for th xy h/.j:jack)1uq b2wo negative charges to attract each other?

  Is it possible for a positive and a negative charge t e uzcz;*231+lynf/ djccs0g2 wxz,pm o attract each other?

  A glass rod is rubbed with a piece of ,8nw+-y rlx bosilk. During the process the glass rod acquires axo lr-8bwn,+y positive charge and the silk

  A proton carries a

  The model of the atom showsybs/e+m ; 2res a

  A neutral atom always tk o0cm -0mxtwv)x q/0has

  An atom has more electrons than protons. d5 i(co n,nm(x The atom is

  Materials in which the electy+ o27rx,-ugki (birmrons are bound very tightly to the nuclei are referred7gbr , +kxiiuy2mor(- to as

  Materials in which the elet7wcj88z5s/es.ukk1 i9 leav ctrons are bound very loosely to the nuclei and can move about freely within the material ar8e15u j /sw 9ick.8ktsz7 eavle referred to as

  A negatively charged rod is brought nearxwipo d(, 9az,x 3rkkghpx*,xb-+ nd: one end of an uncharged metal bar. The end of the metal bar farthest from the charged,i3 ko,*9a :-x xxpn,dhbd+pxw( zkgr rod will be charged

  Sphere A carries a net positive charge, and sphere j 6m9ctbh4 wuu)4 y9b l6lfv xzng-5x+B is neutral. They are placed near each other on an insulated+6zfu-4bb g ly9l)xmxuvwj5cn4h9t6 table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod np on:r3(:isbcharge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivelh7 a9:dp 4f .qsvm) w+s omnyo2ir0q.ty charged glass rod. The+twqh0ov 7oy.ar4.f 9p)mnms iq d: s2 electroscope

  An originally neutral electroscope is grounded / 1 l o9a* ra79bwmmz02jlegktbriefly while a positively charged glass rod is held near a1 /bammg *kw7jr2099ol tle zit. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the jjr3-t4 x4hhh zojw3v-: wm-qt(c m4c leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What hap jhwr3h c 3-h:m(-t4wtq4z-vjj4cmxopens to the leaves?

  A large negatively charged ob 4(.rgk3qr6 cx (xyodbject 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 the first ball, a.go4k36 r(byrcx xd( qnd 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 Coulod t e0,ib,d6e12hbhd wg2nel+mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charg+e uh8 ppomj:1e is larger in mag8 +1omj p:uphenitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placeb m0tk-e d5xvil7z ;*emy/yj:k c4h f3d near each other on an insulated table. l em ky3*di4t0bh j7y5/vx:cmf-ke z;Which statement best describes the electrostatic force between them?

  Two charged objects atta)j n:lrw .q9:1lag g 5*yucddract each other with a certain force. If the charges on both objects are doubled with no change in separation, 5u9gw c1r.) l::*yqljadgandthe force between them

  Two charges are separatedkvkykzf9)r , 4 by 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 forkzf4)y9k r vk,ces?

  Two charged objects attract each other with a force F. What happens t5+:6gr 9covvij met8tm ab;i4o the force between them if one charge is do+imct6tr;ij89v:4 b o 5mavgeubled, 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 happeos;qi9 e;luk airt6 -w+ad ,1fns to the magnitude of the force on the proton if a second electron is placed ut;, fk o9d;wl1asqi+a- i6renext to the first electron?

  An electron and a proton are separated by a r9qac/5ccdzllt v*n:g a f5wg45rk/x5;ul/ r distance of 1.0 m. What happens to the magnitude of the force on the fir5ux9 dc;rlq r* a cr 45vn/f 5al/lt:wcg5/gkzst 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. What happens to z0ablsq gs9vdiii, 50t /gk*: .u;bjb the size of the force on the proton if the eaidsliz b ;vt5qib gub:s,k*g0j9 .0/lectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Whemzfc(nc nm g)i 8ib/a+cj c24k,c/q2cn 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 eln/ak/)4z2c mjg8q cb (+fm c,2cniic cectrostatic 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)xd7*hz l pmop7 fnzxtb p* g ei7j9t0nfi*2-1teral 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 oz ii12z9otm n dep0jx* t7p npf7*bhxlf*g- 7)ne of the other vertices?

  Which of the followirl/l)j x,-2q;vk aiyzng is not a vector?

  At twice the distance from a point charge, the strengt7**b,xwu xbd):6u8a 8 wsk)joxngc yuh of the electric field

  Is it possible to have a zero electric field value between a negatzr.ah8bw*f:0 e3 k4vxg+r dxxive and positive charge along the wrd3k :f0b8exhx ag+x.4 vrz*line joining the two charges?

  Is it possible to have a zero electric field id ,a/xyhs3i *value between two positive charges along the line joining the two hi, xsiad/*3ycharges?

  Electric field lines near pq(1dv c0k 9l0yzc f9dcsitive point charges

  The electric field sho0s+,zd efozpeff p tj,0h4 :0dwn

  Can electric field linesjzsu e :rjkf.52h 8)yz intersect in free space?

  A solid block of metal in electrostaticpc pn;h jy8co83 w(0mw equilibrium is placed in a uniform electric field. Give a statm(8w8nc pc3j hy0p ;owement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gi ,,dbzwh*qa7(uf9lx gu,z7 khven the same charge, the electric field (E) midl baud7 wh,zx7uz, qg9 (k*fh,way between the center and the surface is

  A cubic block of aluminum rests on a wooden t5ja+r alemxvd: ( q9t,able in a region where a uniform electric field is directed straight upward. What calq +jr a, d5exm(9tav:n be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium nearvow-; g:clt: w sgb.4qq* pf+e an electric charge

  A positive point charge is enclosed in a hollow metallic sphec(l t:jk*v;xv re that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above thl*; v kcxv:(jte hollow sphere has

State three propertim bb:yvhm0m/4:xydc- es of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one e5 q i.r(x*snoj3h.3jad+rp db lectron 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 e ,1-fz gecg9r uc8:eeedy*1z.00 mC. How many more protons than electrons does this pirg1 98*gf :,c-e ezuezecd1 eyece of plastic have?

  What is the charge on 1 kg of pr7xhcc2m(b g6 motons?

  An atomic nucleus has a charge o0e .6ta t+sfynf $+40e$. 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 oep)bg lc93s0 of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between thepge)9co3s 0 lbm?

  A 1.0-C charge is 15 m from a seco1nynpw x;hym 0mot9*/nd charge, and the force between them is 1.0 N. What is the magnpx/tnhw m y01*;my9 onitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Ho *4j)ct ma9m3;ry3s tsybnxr0w far apart are they?

  The force between a ..juc uvnq,sb*zbq ,;n- m-bn$30 \; mC$ 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:- j8sybnj c41u b9rop 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electricbb 18ou-jypscj9 r4n: force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis7 iesss*qi(8thrls 1 0psx/3 f. 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 ac3* tpr0qless f h17sxssi8(i/ts on the charge at the origin?

  Three point charges are plhb/xy d1iaz7s )4 y8cjaced 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 mC at the 100 cm mark. What are the magnitude and direction of the electrostatic force which act7h8acy 4)bzjdxys1 /i s on the charge at the origin?

  Three point charges are located at the following2it)pbb0. db q,r q8qs 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 thebqd,q2tpbr q i)b80s . 3.00-mC charge?

  A point charge of +Q is placed at the center of a square 51**o hfn bz5cwjxjj+, and a second point charge of -Q is placed at the upper-left corner. It is observed that an elj nh1 5wf jjcoxb5**z+ectrostatic 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); Q-efl5jq ir yu825gtv*3 = 5.0 nC is at (0, 0). What is the mag qg* vuf2- i8l5j5eytrnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.3lco):o (r.b z go fic/4yc)o1v0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the1( ofcl igr/o.vz yo :obcc)4) net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at 8mt6hue 6+fd)x8kghmthe vertices of an equilateral triangle whicth )6 mgf+ 68edmukxh8h measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges k uqtf6ryn8c+ -it x7q4 lj,g6o(i5beof +Q and +4Q, which 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 electrostatic force acting o8ji q+r6 tte -lo7ik(,c5fn u4gxb6yqn 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. W+ ee+l5 jn4:m+lqqd wphere on the x-l +qqelp5wne:+djm +4axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q ikkx67. a:n y f( uu-1gvckyucxo j0b1+s placed at x = 2a. Where can a third positive7 : c16v+(1jaug k-xcnkobu0yu yxf.k charge +q be placed so that the force on it is zero?

  A copper penny has a mass xj( rt iok3i7gzyz+.( of 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 grwu; d /zopy ,me5cta+ 8(hs0okavity by the attraction of a fixed proton some distance above it. How far abt+oo0w;y emhuc5p z(ska/ d 8,ove the electron is the proton?

  Two 0.20-g metal spheres are by0 khriulhxnztn( zau6i54z /z 8+:3 hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostiz0nt+4y6z : nzixbh/rh u(8l 5za 3ukatic 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 erw3/m g rnl(i0wzd,b6elq5s*lectric field at a distance of 1.0 m from the nucl5ge3wb sz06mnwi/ lrdrl(*, q eus?

  What are the magnitude and direction of th qsii2v62bz;nkd ,cf gf/6)lre electric field at a distance of 1.50 m from a 50.0-nC charge)zf sv iq,r2c d2l /;fnbg6i6k?

  A 5.0-C charge is 10 m from a smalld2waay8tq/,:p l/mg:zc y /px test charge. What is the magnitude of the electric field at the location of :: y,2z/aql c/tmp pax8/dgwythe test charge?

  A 5.0-C charge is 10 m from a smkewk -;6*p7lfp6db18jri cj lall test charge. What is the direction of the electric fiel 1 c6 r-p d7*8i;elf6wkkljbpjd?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of th:o 639- mr ,aky qv0n ahr1k)jxmlxjd)e force experienced by a 1.0 nC charge placed at the loy har-,6m1m3lxqjv9x :rkna)ok) 0djcation of the test charge?

  Two point charges each have a vkhwdojb1l43 ;oi )e6ng he2 d(alue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point4deob31n ejl kh6(w2)o gdi ;h midway between the two charges?

  A 5.0-mC charge is plac0pi zb;xj 0:n.z9ttjhk9i 4i ded at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at thii 94t.hx;j0 dbnj :kzitp9 z0e 50 cm 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 meter stick and a -4.bav,s +0 ;ewek0 mC charge is ple k;ae+w0b ,vsaced at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mCp9wju; hqm :+y and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway bmh p wq9y+u;:jetween them?

  Three 3.0 mC charges ar)wn-b x4lk.6 5wm*t-abo5yrjy a f3ble 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 of aby.-mxr3 )54w obl -kyf6ba j*t5nwlthe square.

  Consider a square which is txm ufncu7-fjhj9t/ q +yh(6 frel75* 1.0 m on a 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); tjuq+f9- u7h/h7jtrey (x6n*5ff lm c -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 on a charge of 5.0 mC when it is placed.d4r1gqug wp ; in a uniform electric field. What is the magnitude o.4d1 gqupr;g wf this electric field?

  A particle with a charge of 4v3 w,n cikio9ha96n2u.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 pboddsp g3u+; i,. ab)z ,(rrmplaced in an electric field of 6000 N/C pointing downward. What charge must be placed on theu;s3 ibz p., rrdgma(+)p, dbo ball for it to be suspended?

  A foam ball of mass 0.150 g carrj(), n4 8id9hqc1)s w g) xyaaerh-qmries a charge of -2.00 nC. The ball is placed inside a uniform electriij-1hq) wga) ahrx8, sq rme n)c(y94dc 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 carries a charxq3bhpp)sh-3 ge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfp) 3hqhs-xp 3bace?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is..p ybr 8qtj+e-pf, zi the electric field 6.0 cm from the center of the .q-trfbypzj+ ,pe i8. sphere?