State the law of conservation of electric cayig+eo : ailiie12 jm3 /a50eharge.

  Is it possible for two negative chargepr8i )qweg 4-gvtc:kyea/68ymu; , kzs to attract each other?

  Is it possible for a positive and a negative 0fbaa0 t+g-(ly5jn6kb3 gy lfj,i6g scharge to attract each other?

  A glass rod is rubbed with a piece of silk. r b8u/grn6wp: During the process the glass rod acquires a positive charge : bru/pgr 8w6nand the silk

  A proton carries a

  The model of the atom shows.s 4 drggv)2ujlam 26s a

  A neutral atom alwaygj3rvi6 4roalf1wqh+jgjz w.8n +q. 3s has

  An atom has more electrons ttwwc; mz)d*wb;n-s n bh7o92izju:7k han protons. The atom is

  Materials in which the electrons are bound very tightly toenbtmaw7 ;*s)x; ) ylu the nuclei are referred 7 yub)at e*sxwn;l);mto as

  Materials in which the electrons are boundo-gkaia: z ln7: arzpr .gm, qu/,d;x+ very loosely to the nuclei and can move about freely within the material are -k,g7p/ .rda niorl;uq gzz: m+ axa,:referred to as

  A negatively charged rod is brought near one end of an uncharbmxm7 )rvck.*0f kz 5ltb6 gr6ged metal bar. The end of the metal bar farthest from the charged rod will be cxk). trbcr 50zmf67*gm6klvbharged

  Sphere A carries a net positive charge, and spheu19kcf)9evd ps a63agaork12 re B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire tr93a okpa edk1 s1)uf avc6g92hat is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope pos ur9me+ao.2xditively?

  An originally neutral electroscope is brieynv zhe02bqh1/y pt8 3fly touched with a positively charged glass rod. The electrosy2nhq/3 zy bh8e 0tv1pcope

  An originally neutral electroscope is grounded briefly while a positively ch8vris- 0 ogeiu)wcy*al43 w69eb5 gewarged glass rou wg0eg e9 wvi65o-e*4b3s 8riay wlc)d is held near it. After the glass rod is removed, the electroscope

  A positive object touches a nvzbr.rmx) nn 5sz *+y*n6-v wneutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Whatvs *n*xvbynn m6r)z n+ -w5zr. happens to the leaves?

  A large negatively charged object is plapn+upr *e hv k)fu9o-)ced on an insulated table. A neutral metallic ball rolls straight toward the object, but stops ben*u)ovp)pehu+rk f- 9 fore 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 the final charge on each ball?

  Charge is

  What are the units of the Coulombqegqiw31op u8,vf uzf,xh0 75cq3 z s; constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distaca ac56dzon n ;*si8/snce d. The first charge is larger in magnitude than the second/8d6ncaasz *sio5 cn ; charge.

  Sphere A carries a net charge and sphere Bhqj7e ewc9712 dsp05shl ce*d is neutral. They are placed near each other on an insulated table. Which statement best describes the electros1*j e 2wpccq0 795hds7dlhese tatic force between them?

  Two charged objects attract each other ; 9eoghn-xdkv*7b8m.r(b gljvj - 3olwith a certain force. If the charges on both objects are doubled with no change in separation, the3nobvg;or lb e vj lm.-dg-kx 7jh98(* force between them

  Two charges are separated by a distance 6snyo xo6e3q6 83pl mmd and exert mutual attractive forces of F on each other. If the charges are separated byxoep863 y s3 nml6o6qm a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to 6h-ljh(ffv ) yjn md 59hn,du1the 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 original value? The force is nof(vnu1-5lhfh6d ,my9)h dj jn w equal to

  An electron and a proton are separated by a distance of 1.0 m. Whatq5li4rh k* jt:ws3s5sz4 -plg happens to the magnitude of the force on the proton if a secj:4ws p3kti s*-qlg r4 5hsl5zond electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wh/fnwhk qi: kfxd nq2 5c+.nr-1o1oi0kat happens to the mf -:o5i ckih/x1nn .01q kqdnfo 2wrk+agnitude of the force on the first 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 hapi2u* ./mlg lelpens to the size of the forcei.*2eg l /llmu on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second pointjk7ccy4 sx*3 v.xv t5y/syof/ 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 electrost*y/styc o x/xv.4jk3 vy cs75fatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilatbts b x;ar*k4pz(mi 8)m5,zmueral 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 )mk,xpazb*mz4 btui;m8sr5 (a third charge of +Q placed at one of the other vertices?

  Which of the following i:c-hsmnytn +) i ;,uc.l j mn;m7tyyu/s not a vector?

  At twice the distance from a point charge, the strength of t-*4cq rcnxg 63lp0 uvm17cbsyhe electric field

  Is it possible to have a a7n8y)h) c.zj cd,k65ww v ejmzero electric field value between a negative and positive charge along the line j7jkc m )jn.8 d, w)6wavy5zehcoining the two charges?

  Is it possible to have a zero electric field value5wzb btq *f3n. between two positive charges along the line jb b5ft3q. znw*oining the two charges?

  Electric field lines near psapw6 dzns 5i;-ebfwe5 ,r .y3bitive point charges

  The electric field sho67gxmylh 2nx(g -(* 6:5ub42pqgaa jusv tkhzwn

  Can electric field lineuer 1r hg;*:ca3:n0hg 6sozldk zx 3x4s intersect in free space?

  A solid block of metal in electrostatia kpv;zgh f4l +k:61jxc equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the x6gl aj: 4;1kk vfzph+block's interior.

  If a solid metal sphere and a hollow metal sphere of e() p 9x w1;ygmidypb;cqual diameters are each given the same chargeyg pdpw 9c)yimb;1 x(;, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rl2lvx otug0 .w z0uu)l vbl 4s9xo:0i)ests on a wooden table in a region where a uniform electric field is directox2lo:tv uuz0iw)90. 4ls v)bu0gllxed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostat ubsgcpl*5 (qvd8xq9 8ic equilibrium near an electric charge

  A positive point charge is enclosed in a holloo b-fnn y:971z*qzs5ha7fl ngpbur-;w metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directlyo-b* sqlfbufng:5 7yz n 1r np;-z9ah7 above the hollow sphere has

State three properties of conductors in sz;)qam:sz e bp/x4/elna v8e+tatic equilibrium.

State Gauss's law.

  The charge carried by ob0,hg vwg)is1ne electron 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 ma b geb ;9w.qh cx;o-dv)2two0kny more protons than electrons ox) d t-;o;g.w bh e0w2cb9vkqdoes this piece of plastic have?

  What is the charge on 1 kg of p)wxct glpysi3 2v0 h6p: ;mhf5qc.u 0yrotons?

  An atomic nucleus hane.q *hc7o5has a charge 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 and -4.0 mC,9*qcf2a -u*skc yx*ec respectively. Whatq u**9*cc afsxky2c e- is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between tht) p9u+lxf 5lpem is 1.0 N. What is the magnitude of the second charget puf9 )+lpl5x?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart arduo o:)6 j/ab34pr k opeg95uye they?

  The force between a w t1ipgap//u:$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 clz th )ue sk05+b08c npx),fnbm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betub0c,z h t8kb) xnn05f+e)lps ween them?

  Three identical point charges of ui7eob1kqan*r 9ny13)m,x kv 2.0 mC are placed on the x-axis. The first chargekq3y7x aer1nk1u ob*m9in,) v 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 acts on the charge at the origin?

  Three point charges are placed on the x-agq(m /7od9vmx xis. A charge of +2.0 mC is placed at the origin, /dv g9mo( 7xmq-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 acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.0n9a 6cds10a:0tr ah ac0 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. Wha:dtsar6 ha01 0a 9cnact is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at t*svfdj y10o rpq,ceajc* xhu;y 8t/ 0+he center of a square, and a second point chargyho d;rc s0ac0* jt*eup, /yf vqx81j+e 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 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..,vk46 l pyv2h8zg uwz0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What2hp4zyg kl8, z.6vuvw 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 (0z e6l;ohfl 4e) xqza)0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direcz0fh4eq e)z)olx;la6 tion of the net force on the 5.0 nC charge?

  Three identical charges of 3gpbo)if uh+2. .0 mC are placed at the vertices of an equilateral triangle which measures 30 cf.+o )iugpb2hm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges ofrz ua k3uas-9:zjx 1wva0 nnu 9,*aj.r +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 xr *-ja n9na, 1 aa0.:ru3kj v9suzzuwthat 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 xs9:mt,ffmce4xi* d;do1pb1(d(slqc = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is ze 1o(idmc1dm* :9t;ds4(elqxpsff cb,ro?

  Charge +2q is placed at thoi woh(q 5.q:hnc0 f6oe origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed on6 :i05(oqho fq wh.cso that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total o(u k)v onpq*k m(c)0jdf $4.0 \times 10^{12} \; electrons$ 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 the3elrohsq zzjjd(ug a)b .,5*a7h 5gn- force of gravity by the attraction of a fixed proton some distance above it. How far above the electrondhnaj zgheos.5zl3aj -)5( gr7ub q,* is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threadswr-g ga 09/bvu which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces t-v9 wgb/0 augrhem apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has aaw1dxd/;mnd9p u ;p6d charge of +40e. What is the magnitude of the electric fid;x a p;wmdu6/1d9dn peld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field atunr r7*v+u d)aqx4 4bqhj47l a;6bre6v.tx wf a distance of 1.50 j4rwd.nvx*r;qa l6+huebfr b6 auv74x )47qt m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Wv2b9re2x, fyk -dqi) /cjsso 1hat is the magnitude of the electric i1j v-osrxf 2c/sb,2 de9q)yk field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What i3,zqgp-sq wq;s the direction of the elezw-qg3q,spq; ctric field?

  A 5.0-C charge is 10 m from a small test frpf0k)w 0s0scharge. What is the magnitude of the force experienced by a 1.0 nC chargerf)0f0s0 psw k placed at the location of the test charge?

  Two point charges each have a valueeia(5f9*f*yc ef h+ct of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betwhi5tc e *(fyec+ 9*fafeen the two charges?

  A 5.0-mC charge is placed at the 0 cm mark o h;c zd,dkl.b9f a meter stick and a -4.0 mC charge9,chd.l bk;dz is placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at tmq)-baa w-)dm he 0 cm mark of a meter stick and a -4.0 mC chargemaa mq-))dw- b is placed 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 mC and -7.0 mC are placed at x = 0 and x = 0.20 m.3w ,2mihs.j22xkqfe51v cugd What is the m wshjvq2g .13ci5dxm ue2 kf,2agnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of(tghpcqq 2 g s*a, k9w-b9rt8q a square of side 0.50 m. The last corner is occu sqg*h2w8-9rq,9gpac(tq ktb pied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the)hb4qf*inr9q p ncq (2 corners of the2p(nn hfq4r9)*qi qcb 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 square's center?

  A force of 10 N acts on a charge of 5.d4z/ u7k1bz/t rz5 p8).je v gmfsg-s,smoeo;0 mC when it is placed in a uniform electric field. What is the magnitude of this elv4ezokm/dgms1 sf.p5; e8u ,rz7 zob-j gt/ s)ectric field?

  A particle with a charge off0c ucjjvmm; ldte *q)9j (0+i 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 placed in an electric field of -d 44nywbd g,o3.cilg 6000 N/C pointing downward. W4yigbc nd4w-, .dl go3hat charge must 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 is placed ii w,cg99lx)vf nside a uniform electric field, and is suspended against the force of graviti99wfgxc,v )l y. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries vm2+ 0;ibup,zaq7um rpri1f.a charge of +2.0 mC. What is the magnitude of the p .7ip;mfu umzbi rq,0v+ 1a2relectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries sv. ie4 xkpc-z/w1f,zn c3pp6 a charge of 3.0 mC. What is the electric field 6.0 cm f.z 31,4-/zppsc ekwvc 6pfnixrom the center of the sphere?