State the law of conservation of electric charge i tnvd j/po*/q895(cygo h-1wzog( rv.

  Is it possible for two negative charg;txov)s 9zj,v- -bm1gvpx h(dq gi.n 7es to attract each other?

  Is it possible for a positive and a negative charge to attra i6 s7hu2whs7vct each other?

  A glass rod is rubbed with a pie *8ne, huuy+x*htvo np--0wmquvk7 r26* h eukce of silk. During the process the glass rod acquires a posi 6ewn2k 7h,v*-*umk*+qup x rnuovye- 8uhth0tive charge and the silk

  A proton carries a

  The model of the atom shows . ;++ f8vo k mxayn(dm:gwjt:ga

  A neutral atom always has(n:6wuxhfa 7fimo*- w 0tooa,

  An atom has more electrons than protons. b:2u nk0h8: a b1lmfneThe atom is

  Materials in which the egf7 i9 kj3t1knlectrons are bound very tightly to the nuclei are referred to31 k kfn9tgji7 as

  Materials in which the electrons7 qu ju;8 ywv:ol8oi:g are bound very loosely to the nuclei and can move about freely within the material are ref; 8:viql8:7ou uywgjoerred to as

  A negatively charged rvpv oj 4+:hz7p31oq1 x i jov6:sad:kkod is brought near one end of an uncharged metal bar. The end of the metal bar farthest fr 4j :i p1d6svkjvvxhoqk1+zop o7::3aom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are placeaovqnnx5 lb/as 9/0n(j2 .qsqd near each other on an insulated table. Sphere B is briejs s 9vb xlnq/(n/.2o5 a0qnaqfly touched with a wire that is grounded. Which statement is correct?

  How can a negatively ch+6-batg:ti)1x62t xqw kibs f arged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged 20o/g+ hbeia:. 1q4ho19tto get;ezirh p-sbglass rod. The ei0 t2ez o;.1q hbtp-hr:to o a+hgse/beg491ilectroscope

  An originally neutral electroscope is grounded briefly while a positively charg8,*/uosexo1y*o 4rt ua)ihbl ed glass rod is held na)e*io8obs 1,uxruh l/y o* 4tear it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscopzbh:nqoev 9/ s5rv7l4 e, and the leaves separate. Then a negative object is brb5/ezv9 h7:oln4 v rsqought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object iseohgf-t c s1n.9nfwmf(8+y:z 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, and stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative objes8ywh-fe n zgf +(.9 fnmo1t:cct. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constant x0ayx /gbx9/v3gfai ) $k$, which appears in Coulomb's law?

  Two charged objects are sepdo4npqn+dp +5arated by a distance d. The first charge is larger in magnitude dnpqd+p54 on+than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are pl-n*fp+ 8gwo)nd8f5akwd ,wtgaced near each other on an insulated table. Which statement b d5+d g, w8)aw*8ptkfw-nognfest describes the electrostatic force between them?

  Two charged objects attract eabklfl6xt i4( 3ch other with a certain force. If the charges on both objects are doubled with no change in separation, thbix tll4kf63( e force between them

  Two charges are separated by a distancem7qns :uos 72a d and exert mutual attractive forces of F on each other s qasnm7uo:72. 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 fo/c li y a0wlsktq993/ bd+r2hprce F. What happens to the force between them if one charsc+r wk2adl0/ qltiy39bp /9hge 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 distanckozlpbov5 5d -o *-iz,e of 1.0 m. What happens to the magnitude of the force on thz5 k-odv 5z,pol-ibo*e proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Ww rryj)o 0 xf8jgdy9re)li mhb2+ m,p2sj6 f4*hat happens to the magnitude of the force on the first electron if a second electron is placed next to the protoiorwdf 6p8l* mjj)0 hgs9mr4)yy 2,ref2+xjb n?

  An electron and a proton are separated by a distance of hyan sr2 :;9dwwcym ;:1.0 m. What happens to the size of the ;d msw:y9 wna: rc2hy;force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is pla-pku x w43ut8 0x4m (s8bvvonhced at the 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. 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 th4vkw usx mtvpo40 x3b(-8 n8uhe positive charge at the center of the square?

  A point charge of +Q is placed at +) n3samehi:i the centroid 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 nea+s)3hmi :i magnitude 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 following is not a 6/b) )uq bfepd/i;j c5l eqkv6vector?

  At twice the distance from a point charge, the strength of the electro(n4xdpk h5a.ic field

  Is it possible to have a zero electric field vl mq5cfryvx,a8o 4s tqa2 0,g.alue between a negative and positive charge aloqsglfo. m24y5cx0, v8rqata, ng the line joining the two charges?

  Is it possible to have a zero electric field value between two poslug0r 0osdo -1a2,4xhkzlxwi 6x9j/ kitive charges along the line joinin suwdxo40/ia,g-olx12l x0 kj6h9zkr g the two charges?

  Electric field lines near psitivej3 gxd; aqq07g)qb*f y point charges

  The electric field shown s6 6ot yxp83rm

  Can electric field lines intersect in fr; oq18w pge vc by+b+2y:bij9k bcx;f-ee space?

  A solid block of metal in electrostatic equilibrlcxp,s g0 +s cxcm.;2.xki:e iium is placed in a uniform electric flx;g, ssx c2i.c +ix.m:epc0kield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow mayd 7 s5ch:92ho;-zglq ynhh9n a3+h*i1cxvfetal sphere of equal diameters are each given the same charge, the electric field 3d25nslqh9 ;c :*h v79hnfh1-yyah xzaciog + (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wij5 ewzyafv9c: 2k8h;ooden table in a region where a uniform electric field is directed strzv;5wj9i8 fy2ech: ka aight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charge kq lk,vex:)pj-4 lpfnh)u1h1

  A positive point charge is enclosed in ak-i,, uvf5( ghs td6kn hollow metallic sphere that is grounded. As compakns5(i,-h6f, k tv ugdred to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertim k4x39 pveyhef-gw/+9e4i kif)+dkl es of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one elelt x tn0j:np:(4hman (ctron 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 more protons thalj2x e7 3v)pqbn electrons does this piece of plastic hav7)3qblep2vx j e?

  What is the charge on 1 kg of qwm+d0f+f:gm r-5g jkprotons?

  An atomic nucleus has a charge of+ztampl4 a9ah.:f l5o $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated byi3at, :7mjokjdm0 j ,yx+p om;hz;r,e 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magniti j e 3;mj;kop,har7o+m0m,t jd,yxz:ude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between themdkvd-6ge ,tq )p)4 ke,zxzkbymxe z)2pg)7/q is 1.0 N. What is the magnitude of the second charge? xxvpezztp74 ),bqqey-6kmk2zd)) kdgeg/ ,)

  Two 1.0-C charges have a force between them of 1.0 N. How far apart l-xjxdj23jdox 1:4 ky)pgoz7are they?

  The force between a 3aff*v q(i.-c7j zz cd$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially +o1*epb h w:ty8o81oihl mfq( 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the ei1 *8q8 w(p+1ohf mt:eobhyol lectric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firstbr/5d 0rl3 y3uiy8 h/skq-uzf charge is at the origin, the second tq/5 lf 8 rk/ 0bdz33hs-yuyuiro 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 are placed on )4p3yqn jwjlu f 8i 69cunp7cd3ulx-* 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, and6cp yunqu w)-jf * cu34 llpnj98xi73d +4.0 mC 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 followin ul4k5 ,wlg-vb8 zy;vug 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 of5 lz,8kwlvu ygv-u4b; the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of )r r(m),xzen1wg(:v;dlnus b 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 ex vrg:zm,))sld(w ;nu1n (brthat 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 = -1.0we*b53bo,b* y c z/efr nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What i3r5b zwce b/ *,of*eybs 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 = 5ob/80dvn(5afwt kfj ;.0 nC is at (0, 0)dowff ba;0v(k8j/ 5n t. 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 verticn+1yn/ o0u id9zgle1h es of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges z+ iod9u1hyge0l n1/n?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wha,iih:v 3 mmua- (ut2hgt point, on a line between the two charges, would it be possible to place a i,t ha(mgum v:uh-2i3charge 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 cha h f i,a-wj6eo(k1bs)irge is at x = 4.0 m. Where on the x-axis can a third charge be placedje w,6()1hikbfos- ai so the net force on it is zero?

  Charge +2q is placed at)az+gwc6r(18nrlr gj ri:.v x the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the 81)i6grrlgrn.crxvz :w+a j( force on it is zero?

  A copper penny has a mc5izgefdyii- r 35qbp++8 /jz:y:s z dass 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 forcec, ftx4vk n 4/ b0ajidl1wg.o0 of gravity by the attraction of a fixed proton some distance abovd wjtcfg l k/oa. 0,n41xv4ib0e it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common l je3umcr8(u i9-4sh hpoint by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between thel4-(3hr u c jihue9m8s threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitudep*)f :+k zyprnjq6de+ of the electric field at a distance of 1.0 m from the nucjr+qpkfz)np:e6*+yd leus?

  What are the magnitude and directionh/ gy:r5y 2vcvx0+f fo of the electric field at a distance of 1.50 :g v5cr fy+y/2hxv0ofm from a 50.0-nC charge?

  A 5.0-C charge is 10 m f7;aeawgvtucauz l)9*r fr-/ l roy3x(c5+be(rom a small test charge. What is the magnitude of the electric field at the location of the u)l; -x*fayc3v9e bzlr oge t+u7a/((crwr5atest charge?

  A 5.0-C charge is 10 m from z+, bh,3nq +*k/uo5*n,i uryu iovqpda small test charge. What is the direction of the electric +u+ v ud,z i*koq,o hpn3bn/yqriu*5, field?

  A 5.0-C charge is 10 m from a small test cha2 er1t4sp/wu1gtb 0farge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of 1pawfbtrs12u4/ tg 0ethe test charge?

  Two point charges each have a vazfd,9,1 5ul + rmzoavulue of 3.0 C and are separated by a distance of 4.0 m. What is the electric fi,rod z lm+avzu5,19fueld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC ++br) 2y48rh cjnkdx wcharge is placed at thr2n 4b xyc dh)j++kr8we 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 5oerde81sa5 q -4.0 mC charge is placed at the oe8da sreq155 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are place -*dcngccdkg5 vgkv15 -*2 ukdumk,k/d at x = 0 and x = 0.20 m. What is the magnitucckgd2kgv 1kn5 -mdu*v5cg,*-k duk/ de of the electric field at the point midway between them?

  Three 3.0 mC charges are at the threexe)rm6ede- *+ hoxba3 corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the eb eh+)e xa3*6o m-dxrelectric field at the center of the square.

  Consider a square whzx(hyf7ysa:diw ob vi/423m+ ich is 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); -3.0 mC at (0, 1). What is theih fsxz wy/ 2:(7dmavo4b3i+y 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 in a 264fq8rphaa/9 /g pvhk 7.p5ar..tksn qa twv uniform electric field. What is the magnitude of thik68whq t/hfnkvv..a aq a 4 sr/r 52p.agtp79ps electric field?

  A particle with a charge of 4.0 mC s5 fu95+cq oqmhas 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 placed in ansxt- *ih k c1vy+joz:+vh:fp62zbt)y electric field of 6000 N/C pointing downward. What charge must be placed on the i s1 kvoc:)y+hvj6p- *+z:ytht xf z2bball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nCm f;/t q *2m6wq;riullgq23ej8ordd+. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electrtl ri w;dr q8gqjdl23mm ou+*6fq/e2 ;ic field?

  A metal sphere of radius 10 cm carries a chf274; r9 sogslda hirh )*2rubarge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's 9i7f22;obur*gha dr)s 4srl hsurface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electrj 1+ ddqrmof- 038knpz4ofh 7iic field 6.0 cm from theh0jd 7o8roid +fmfz1n3 4qkp- center of the sphere?