State the law of conservation of elec0 w(rd6uqkm7 xtric charge.

  Is it possible for tw fmhfb x.j04k,o negative charges to attract each other?

  Is it possible for a positive and a nfweafzm/ pqn 93(t lh-47bwqex .7;8q jr7n foegative charge to attract each other?

  A glass rod is rubbed with a pied t01lo afyhs96m fd*4ce of silk. During the process the glass rod acquires a positive charge and af0oms 6d*d49 1hftlythe silk

  A proton carries a

  The model of the atom shows af.:at-h ty uv:

  A neutral atom always1f(t hmdag *d3 has

  An atom has more electrons t 8meok6yw *q hd i-0xxqaj7apt+)3s8lhan protons. The atom is

  Materials in which the el tvdiwlj*15 ln cm81gy.)qz s3ectrons are bound very tightly to the nuclei are referred to 38dzywi .*5ns gj1c) lvtq1lmas

  Materials in which the electrons are bound very loos 4w,bdhl/e wm*ja7cb- ely to the nuclei and can move about freely wih7cade l4,jwbw*/ bm- thin the material are referred to as

  A negatively charged rod is brought near one en :m.gdzp 4u+vid of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chargedum+v:z4 pdig.

  Sphere A carries a net positive charge, anoxmp jq335f(df0 (aned sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched(oq 3j 3dnm(0fxa pe5f with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posit8 3c e8d ywj;k 4q*0yubc2wmwuively?

  An originally neutral electroscope is briefly touched with a positivel ;y6tu38jjqzl2wbag5 y charged glass rod. The electroscopj6qty2b j3 uglz5aw;8e

  An originally neutral electroscope is grounded briefly while a positik1 17ut)qb h s doh:/nswaig3( tbc-z5vely charged glass rod is held near it. After the glass rod is rbs:ut (s-wqt1nk)7ih5 hd/3g c1zaob emoved, the electroscope

  A positive object touches a neutral electroscope, and the leaves ssi,ijk*5pcim qp7u , /eparate. Then a negative object is br/s7i * uk5,qj pi,icpmought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is plac kesno3 x7id+ kt;+5wd im1k 0bf;15js.krtnoed 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 f5tk; om f.x10nw5ei3ksid b+jkd1;knot7 rs +irst 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 Coulomb constani+j k( f pw5+lqj.w+mmt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distak npx36v: 1y8yp/ /xqx+ zkjxdnce d. The first charge is larger in magnituy1/k/ zqx +jx8d npvp3xy6xk:de than the second charge.

  Sphere A carries a net charge and spherej hadm gkf/2z c:op-d: f.fc97 B is neutral. They are placed near each other on an insulated table. Which statement best describes dcfa9j:pm.z7-gd: fo hk2c/f the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the g+pi xxh60;i:q f 3bzacharges on both objects are doubled with no change in separation, ai h: xi0pf+g63;qxbz the force between them

  Two charges are separated by 6tsr * hp*neu8a distance d and exert mutual attractive forces of F on each other. If the charges are sn8u *pstre6h*eparated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens zf7x e3 sz1 rmmkud*2.wz 8k.xto the force between them if one charge is doubled, the other charge is tripled, and the separation distance betwek.w21z78z *mks3mdxu.refxzen their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a protf*j /*nkd+f(b) n4bg;vi ksaqon are separated by a distance of 1.0 m. What happens to the magnitude of the force)4gv*(fd/ *bfj isn+q kka; nb on the proton if a second electron is placed next to the first electron?

  An electron and a proti; k1d7etv eh)dua:i d+o+fi)on are separated by a distance of 1.0 m. What happens to the magnitude of the )veihoi)d+ia e u;:td7kd1 +f 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. :8oglk.b xef1 What happens to the size of the force on the proton if the electron is moved le:.1k bgxf8o0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second p8ej(8dn /eag qoint 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 centena (gd8qej /e8r. 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 a a0fox-ql.etf1e7uw8t the centroid of an equilateral triangle. When a second charge of +Q is placed at .1weo08x7uf- atqf el 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 one of the other vertices?

  Which of the following is not a vectorig)h0px,q x t1- gr k4nyq8sv2?

  At twice the distance from a point charge, the strength ofwbzima)e ; fz71zc2 /t the electric field

  Is it possible to have a zero electric field value betwe3sn (*wo8rtrc7 2xq3wnkjn ,cen a negative and positive charge along the lix7n3rjc2,(t rks wo8qn* 3n cwne joining the two charges?

  Is it possible to have a zero electric field value be+8c/fqluc2l4s jgz v)iqvl 10tween two positive charges along the line joi gv cqjl1iqflcs048 2u+l/zv)ning the two charges?

  Electric field lines near psitive point /-npxe8zmd 4z+iyvb+i 0gu8 e charges

  The electric field shown4 kul9 c.0xxrunve:)4(phd wy

  Can electric field lines intersect in free space?9f/,r+.g i af tbu3xzl

  A solid block of metal in electrostatic equilibrium is placla .( ,*:oqz*iucd bi m e+q+vd5e.oozed in a uniform electric fiebl5(o izm+doecu +z.aiq:qd ,.* e vo*ld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are s8 in1bc,/e;wn1hoh eeach given the same charge, the electric field (E) midway betw1/ w;nb18eno cihhes, een the center and the surface is

  A cubic block of aluminum ru.y d3k6zz5sm ests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block 6 5zdmks.yu3z's top surface?

  If a conductor is in electrostatic equilibrium7f8aog/n (upje3 oo05j 1ukkf near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere thaeevm) j042 i3p *8p clo0to4z gry(wnot is grounded. As compared to the case without the hollow sphere, the electric field at a point dir3 4lrt(8vg 4oi)wjpm c*ezye0o2on 0pectly above the hollow sphere has

State three properties of conductors i9 ngezvl * 8i0xxtzp:1n static equilibrium.

State Gauss's law.

  The charge carried by hsd ig +5y; vxnog-;k(one 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 man6lv9g /-vf5qzdt(xjt y more protons than electrons do6g9 t5(/xj vlvtdzfq-es this piece of plastic have?

  What is the charge ok o3m p;z35um5 bsyksfk+)(uun 1 kg of protons?

  An atomic nucleus has,xf;h8 kr3js8(qlo wz 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 ac(ir)p0a ik xa ibh642hcw):0,a panhnd -4.0 mC, respectively. What is the magnitude of the electric forcwhh 6kipb(racip 4han 0)a:, 02)xicae between them?

  A 1.0-C charge is 15 m from a secondnsiod )k3x:me583 uccm /u ne6 charge, and the force between them is 1.0 N. What is the magnitude of the second charge?6eo8s5mcxmdnu i 3 n/ u:e3kc)

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?2 8ae q:v9tee67 t3n2gxutvgm

  The force between a 8btbf++f fd hh(y)5wb7asfq,$30 \; mC$ 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-N f0sr1n hdbp,oxem k , s;jp2i:,orce. If they are moved isb:rp 0kn1,2hjxs ,peo; ,dmto a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are plpy i .w,mhs5/ viio-c+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 direction of the electrostatic fis.i,5c i/yh-w m ov+porce which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC iskyn /m0+)t ds4 .wxleo placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 tmony xl4 wd.ks )/+e0mC 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 = 2ndb7 2 406pyrl:yvto o.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. lbt 04yr:v6p 7o nyd2oWhat 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 a second p+b-,+bpj 3fk:arrnr43d qxbjoint charge of -Q is placed at the upper-left corner. It 4,jx:+rf 3b3ba r p-bqrdk n+jis 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 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC iw dwrm01v56gn p(p3cms at (0, 0). What is the magn0 gdv pw31mcp 5r(nw6mitude 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 = 5.0m c35/1qpny yh nC is at (0, 0). What is the dc5pm yhn31y/q irection of the net force on the 5.0 nC charge?

  Three identical charges of 3:jy1v 7:r9,rd b fiwhi.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the f9wbiy7h :1,:ir drvjelectrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which zk9+dq 64x(a u1ra1y btokw9eare separated by 3.0 m. At what point, on a line between the two charges, would it be possible4aw k b(krq daoe619+tux19yz 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-w.51gkw8.v8k-o 8mh. zfoly (zthkeiC charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on itg-k(k81 ihozz. 8.hml85 evfyowktw. is zero?

  Charge +2q is placed at the origin and;zzo*hh :dy f. charge -q is placed at x = 2a. Where canyz*;:.dzhh fo a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total o 7cm3(nu1kilx f $4.0 \times 10^{12} \; electrons$ 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 ate/qkikl z 3hk 2c6,e94(0eunjbf iyn3traction of a fixed proton some distance above it. How far above the electron is the i4 bc eh3y623 0nu /znkk(9eeqikjf ,lproton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting hxc5w 0h m-a(h je;+kcthreads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart -wche5xkc;m h(h0 aj+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 m+b q 2 5e;ha6ehb2.udux3rumhagnitude of the electric field at a distance 6eu h;aeqrdub 2bu 2x+ .m3hh5of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field ao t:n6f 2tehkyc: 3dz0t a distance of 1.50 m from a 50.0-nC charge?2e0dc n:k: tf 63tzyoh

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thhl*ysn 459xt h)eih e7 nh8*nwe electric field at the location of theh)n hnsl*xhn 5iw9et4 7h8*ey test charge?

  A 5.0-C charge is 10 m from a small te5 nyu h2+.nskhst charge. What is the direction of the e+2s 5y. hhunnklectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnit66d hsx0 sr k(q8pbt;tude of the force experienced by a 1.0 nC charge placed at the location of the test charge?btq0 86(;k6prh t dssx

  Two point charges each have a value of 3.0 C and are separated by a distb/u76 eqb d3dgance of 4.0 m. What is the electric field at a point midway betwedq g763bd b/ueen the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sticu 4541 fcwbtxt8lqhbf1 i24tu k and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fielb1itucf4 45bqt flt28hu41 wxd at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC :lf( gl*u g5jx9v6xpacharge gf( p x6:l59ualgj*v xis 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 placb 2,o,ry0tn0rww19yd bdzje (ed at x = 0 and x = 0.20 m. What is the magnitude of the eleb dwerd,2ynr09,w z t(0y bj1octric field at the point midway between them?

  Three 3.0 mC charges are ac:f n:l *x)xfit the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. nf)c::*xx lif Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Chargef-eslmd vs57wn 8 a,:os are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1);v em8swn s-,l:7fda 5o +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 5.0 mC when it is placed in a uniform electr pzq*u2;tcbt6ug)j 8r ic field. What is the magnitude of this electric fiel tu);*z6tcurpgj q 8b2d?

  A particle with a charge of 4.0 - 7dqi /*dpplxlxw24gy6,yxk 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 bq:tfvq5dm )0dhcgm0 g4l,5aof 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended4t ag5d 0dbq0fvcmh5,m :)l gq?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The bal 3twx q1cw( gfo1*qzssbw6t0 (l is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitudwscb 0(tgwst x(z 6qwf*o311qe and direction of the electric field?

  A metal sphere of radius 10 cm carries a chab xu y onvhl0q2/64z1lrge of +2.0 mC. What is the magnitude of the electr2y u6/nvb0 ol1hxz4lqic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is thev:cqz2)an+xw glg) (a)l suu: electric field 6.0 cm from the center of the sphswl) qx+gua2) :uav:nz )l(gc ere?