State the law of consej )n2 .x4i*h80 syxhzxk1vrhmm ;(agqrvation of electric charge.

  Is it possible for two nxcmfay9l i:)ompxab3xmir 64o8 p(d r,ez7:: egative charges to attract each other?

  Is it possible for a positive and a negative charge to-b.a eaaz-a (f attract each other?

  A glass rod is rubbed with a piece fm)w(rhv *-zjof silk. During the process the glass rod acquires a positive char *wz(-m hj)fvrge and the silk

  A proton carries a

  The model of the atom so82 5j rft h(y;ixjzp+hows a

  A neutral atom always um+f53bms s2 s;o;ikrhas

  An atom has more electroa+,2rr 5 bpz bce913b jr5ujxcns than protons. The atom is

  Materials in which the electronwxmnx1l k2()w6) a6ya9kybp us are bound very tightly to the nuclei are referrema)1yup( ka66x9lx2wk w)nybd to as

  Materials in which the electrons are bound very loosely to thri jy6v.e k*klf/o25 ble l9f-e nuclei and can move about freely within the material a kirjov-e/blf k le5y6 *.l29fre referred to as

  A negatively charged rod is brought near one end of an uncharged.08ewr gebxpqx,u)2 g r j*h)y metal bar. The end of the metal bar farthest fp u)0*.wx 8xhre, qey2r) ggjbrom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plal-to;poi3 - rqced near each other on an insulated table. Sphere B is briefly touched with a wio; i-3orpqt-l re that is grounded. Which statement is correct?

  How can a negatively charged rod chargc9vb;/ dof x5we an electroscope positively?

  An originally neutral elec7 o f ic9))bqe1gkdq(mtroscope is briefly touched with a positively charged glass mcqo1 (79 )bfidqgke) rod. The electroscope

  An originally neutral 7d+xze l(:nb x4ain o7v;r y5*lm+ jgcelectroscope is grounded briefly while a positively charged glass rod is held near it. Afd z(y*:e4c +ix7;b ro l+m75nxngvlajter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the :o +sh8ijf7tzn+-t k pleaves separate. Then a negative object is brought near the electrosz7o-s ht kp++int:8fj cope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. i z.en s/cpb:(v8t-iq 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 the final charge on eac (/-8.csnz ipq :tebvih ball?

  Charge is

  What are the units of the Coul . 8gb90qx.o4zt5:n wtbqldvlomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a di++;imkb n- gdr8ol9rmstance d. The first charge is larger in magnitude than theomib8m d-r 9+n r+;klg second charge.

  Sphere A carries a net charge and sphere B is neutral. Theyx hb1ndo 7fo43bm/ zb1 are placed near each other on an insulated table. Which statement best describes the 3xbz bdnof 41 1h/ob7melectrostatic force between them?

  Two charged objects attract each other with a cer2d-skakf e8s)4f afx6 tain force. If the charges on both objects are doubled -fs )f2as d68ak4kxefwith no change in separation, the force between them

  Two charges are separated by a distance d and e+xrqr0 qvs6 8dxert mutual attractive forces of F on each other. If thrrd sv+xq 0q68e charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eachtgznn *fc+.cb dl v-11 wqz*k.p: v8fz other with a force F. What happens to the force between them if one charge is do.kfpnvvq.tzlzw* :b8z*nc g -f+ c11dubled, 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. Whj vbf8m:05fmt,gws z9 at happens to the magnitude of the force on the proton if a second electron v g ws0fz9m58,: mfjtbis placed next to the first electron?

  An electron and a proton are separated by a dista2sa7bb*m j 9qdnce of 1.0 m. What happens to t* sd7 ajmb2b9qhe magnitude 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 ofio(9qeu )vwh5ox(/ nw 1.0 m. What happens to thex(onew(h5/w)9uoi vq size of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q il88tp g3*7 x ky9wwyqfs placed 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 pospfkyt 7x* lq9gw8y38w itive 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?

  A point charge of +Q is placed at the centroid of an equ1otypfo4 -bwz+i + c(e()zpnhilateral 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 itpweo (phyzn b4o- t)+1+fiz c(. What is the 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 vecd* f7os;lfg /vtor?

  At twice the distance from a poiovx2:(0 2yvdipc.i emnt charge, the strength of the electric field

  Is it possible to have a zero elect,rn9 do o6y fmdq6sn1:ric field value between a negative and positive charge alongd:, q6df6o onm19s nry the line joining the two charges?

  Is it possible to have a zero 4k fy/-o 9o5wglq+fs zelectric field value between two positive charges along thglo y 9w +5zfo/-fk4qse line joining the two charges?

  Electric field lines nea/l crmd9c;5zg4 u6bpcr psitive point charges

  The electric field show7fi8 mdrxh s+y5rdnf z5*v*8c n

  Can electric field lines intersg)7 *zm. jbntzect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniforms6opv2km g6u, electric field. Give a statement concerning6gmo62 su ,vkp the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eaccxh wt. 9:kk3ih given the. tcx k9:3ihwk same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden 3ps /di.ktipi3+v1 u: ijj9ubtable in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block'sutvu:1j/ip3.j3 bdki+i s 9pi top surface?

  If a conductor is in electrostatic equilibrium nec y/oi :uskw ;b0 8ot-*ff6 pt6vsjzp7ar an electric charge

  A positive point charge is enclosed in a5l7p9;v neqvl q7gt 7t hollow metallic sphere that is grounded. As compared to the case without the holtv7neq v9lg; pq5 tl77low sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stat 8 x*cvok1bcult*;, kvic equilibrium.

State Gauss's law.

  The charge carried by one electron ip q-gawdv y5(hz,yn nehm;j(q8996 jcs $e = -1.6 \times 10^{-19} \; C$. 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. Hm3va:m2 k l0kvow many more protons than electrons does this piece of plastic havevkl 2:va0k mm3?

  What is the charge on 1 kg of 5; dvivkdqc6b9o*r l2jq3*x qprotons?

  An atomic nucleus has atkq fyu8y +cmrqs(6/ (cu5q0a 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 of4ve+4 sg4 .p)c*csz ki/dsf ga 2.0 and -4.0 mC, resga)4kfv dcg *s4+c/psi.z e4spectively. What 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 them is 1.nc:- -gu5q6ruph 1nzs0 N. What is the magnituuh- 6 1psncqz-gu:5n rde of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apafqmst8)1y ph,rt are they?

  The force between a h9p3k u:m8k /t+tyof8ufd2xf$30 \; mC$ 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*2he, yh+u1,a sxrzz iqlao+--N force. If they are moved to a new separation of oz,ar,hes+yz a l2+q- 1hi* ux8.0 cm, what is the electric force between them?

  Three identical poinlh jusvq-6 *xrj(cpndu:gkm 175(jl 3t charges of 2.0 mC are placed 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 and6sugl p*( mjc3(7u15kd- jjq:hv lrn x direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mng aqycejiqc waqt5 l*-/osx)0)* (3vC 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 electrostaticj0w5 )q)*cev qasonqci *- g3y(atx l/ force which acts on the charge at the origin?

  Three point charges are located atu6sgu yn(en 4z09q3 vf the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mCguqzu s 3fn6 v(4y90en at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and,t7 k/k r.wqjp goil60 a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.7jq,kpilt.k wor0g6 / 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, 0.1 1(uesn2;y2k*rb ukkx0 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on thsyb 21;rken (kxku*2ue 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.1x/n) v8qphsb :0 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net fbvq 8snp:/ )xhorce on the 5.0 nC charge?

  Three identical charges of 3.0 m0 n33-ryy +sshdtq3v2iq 6jo bC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic for0h n+3yr yb23djsqo qs3t6-vi ce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sepfqrchi/ 5dls9 p 4sy5.arated 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 forcy9/5flh4.dq 5sp sirce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.01wj7k ul dp*g) m. Where on the x-axis can a thik)du p*g7 lwj1rd charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x =exuc9 nxh1x0gpo+7npkc 8m:lg/v14u 2a. Where can a third pg01ccx xkmoe 1n 4/x9punuh8 g7:vp+lositive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totaljryw(5wg)oyhv - 8d1 g2fgr(q4 u:uku 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 attray) 6 -crgabf8hction of a fixed protoncy86b)fhr -ag some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondu5mh7e+a netkvc,r;p3 z4n2t wcting threads which are 30 cm long.c+7nw54rmv a nke,2et 3zht;p Both are given identical charges, 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 elemjbb94bb r 1s dz2olufpn ,3q (47dxi8ctric fdms1q4u 2ifbbl7zj(3xb o9nrbd,p84ield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric ,2diy0pni:wpbj s *j +field at a distance of 1.50 m from a 50.0:+i*2yjb, nwp i0 jpds-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of ,1l p:jxhbzpe 7wr3i( the electric field at the location of :pbi7r(h,j x3 zp1w lethe test charge?

  A 5.0-C charge is 10 m fro.9y-w ; - ;h one01k df7iy7qyzinxov-k.osjym a small test charge. What is the direction of the electric fijf.1 yi 7oyz . y; 0o--9eny;skxwkhind-o7v qeld?

  A 5.0-C charge is 10 m f;n,6 ginqv/2 kgfg --bobhs6from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of -hfq2g/ ns i;,o-vb fbk6ngg6 the test charge?

  Two point charges each have a value of 3.0 C and are separate9qfwrgcb+h s9, ,tnwjas27x ,d by a distance of 4.0 m. What is thsn,q,f ,9j7 9gw2trac swbhx+e electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a q;l)h; ;y91 t1nslc)wufqxi bi uzq).meter stick and a -4.0 mC charge is placed at thqbsn))i9yu;qlh; xz .1qt f )i1;cwule 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is p0 g,7f s-uzpdzlaced 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 t d -ps,u0zzg7fhe electric field zero?

  Two point charges of +3.0 mC ao9:2lvats rel(iz/ :l nd -7.0 mC are placed at x = 0 and x = 0.20 m. Whatll9r:zvt/ ilsea(:2o is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the threea3,re z)xj.l sybyi12* p itxfto6.f4 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 *b1e pfls2i4 ,3.oxrtijyfy. 6)txazthe center of the square.

  Consider a square which is 1.0 8+dnyx8i1e(g73/puymvt cec 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); 8yxmt78+yd g/u13 pc(cv neie -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 5o9jcjli1tdx ,,h )2sj.0 mC when it is placed in a uniform electric field. What is the magoj c j ,di9xjt,1sh)2lnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass9ae8z u+ txpa9 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 fnp.. sgp* d,w6skd;lan electric field of 6000 N/C pointing dk6dpls fwp . d;gs.n,*ownward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.h92 e)q9+y oj5qf xzmf150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric fieqf992+ hxfej5) m yzoqld, 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 carr cg)gq/c;nkc4ies a charge of +2.0 mC. What is the magnitude ofcg/cc4gn ;)qk the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a c8. rytja;p luj(0v 0x-qgst /tharge of 3.0 mC. What is the electric field 6.0 cm from the center ofxj g yt0t08pa ;t-u(.q vslj/r the sphere?