State the law of conservatiq uq3wt 1a3,qt)) nbrcon of electric charge.

  Is it possible for two negative charges to attract :ga krtw)p)u;nj r-r;z,opi( xxk xy) p; yx--each other?

  Is it possible for a positivxy ksv31r4*nle and a negative charge to attract each other?

  A glass rod is rubbed with a piece *xj bjsv sb*(ftd0*zt/vr,y.1 i j+akof silk. During the process the glass rod acquires sz t,+ bxijyt*j.r*kb(/s av0fv*1jd a positive charge and the silk

  A proton carries a

  The model of the atom shows a4kkiu9p xsj/k4 b+au:

  A neutral atom always hadg()wlsu5b2 * ny ag.us

  An atom has more electrons than protons. zv 32 lw6 5wfh. 2hny2rind*ld The atom is

  Materials in which the electrons are bound5k2xcs,-mt 2rhd 0o24uw wky p very tightly to the nuclei are referrdmohyr x,k4w w2tku2p-25sc0 ed to as

  Materials in which the electrons are bound very loosely to the ( lt4dlyjjz 87nuclei and can move about freely within the mat8yl4( l7tzdjjerial are referred to as

  A negatively charged rod is brou9a1-+ajjhx/cfxlr.3lyn) ahsl;a uv 9 e1 zq:ght near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod a 9lh;3a 9 ar-clefzxu) :nyjl1s1 a/qxvj+.hwill be charged

  Sphere A carries a net positive charge, and sphere B qag1,)0 dtsavis neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statemendtvq0 as1ag,) t is correct?

  How can a negatively charged rod charlnro +n*a uils 7o.wxr:bk1g)3d p37sge an electroscope positively?

  An originally neutral electroscopez axl /2i/pczp- yt(n9h -.izk is briefly touched with a positively charged glass rod. The electrosco-/pt /apc(zi hl2-xzi . k9nzype

  An originally neutral electroscope is grounded briefly whphve2fn /.i 2+sck2zwta pl;)ile a positively charged glass rod is held near it. After the glass rod is removed, the electroscopk;psz+lt)e/.2 v w n hp22icfae

  A positive object touches a neutral electroscope, and the leaves s. 6 nqxpzqm.4meparate. Then a negative object is brought near the electroscope, but doeqmm4.6 nz .pxqs not touch it. What happens to the leaves?

  A large negatively charged os:;r yze q;r0.7.asiygu+c hlbject 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, and stops. The first ball rolls felh0aq izsrcg7:yrs. .+y;u;orward, 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 t9a 5l:ztn c,zohe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is 3y vkvu7:kik4h37:, hgceokwlarger in 4hi,k:h7v g3o ykckk:ewv73umagnitude than the second charge.

  Sphere A carries a net char 0gw pdrc1,8hsge and sphere B is neutral. They are placed near each other on an insulated tableh1s cdgr8w,0 p. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. gabf 3y5pm;1a If the charges on bob31pma ;agfy 5th objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exera/ ikfo0o-;mwi+y 5z0m- oj ywt mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are omy-+y-0 i;ao0fojw5w mkz/ithe new mutual forces?

  Two charged objects attract each other with a force F. What happens to thd;7wb xgt8pxi( 8f5ume 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 87xfu5 ixgbmwdt8p;( is now equal to

  An electron and a protxb/0 qm4b ak aw6qh/m3on are separated by a distance of 1.0 m. What happens to the magnitude of the force on 4aa khmb3qw6 qb//mx0the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1;cq7hqhba*- *p2lj* tc gml5( v oby2z.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the protz hqcm5ah;v -22l*b(tbjqcpl7**g y oon?

  An electron and a protob 8x4tt0gl ;won are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is mov8tt 4gbl0;xwo ed 0.50 m closer to the proton?

  A point charge of +Q is plac: )mfnayv(yga 4u(l) 3;lq:mtf +ncldmh(x0m ed 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 positvl4glc;nxu3mfd :()alq(n0th yya +( )fm:mm ive 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 equilateralqjmh 61pl1: :jma lyq2mk5ph7 p.u*ji 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 t1mqpl2k 5 h:j.jami6qmh *p1u: lp 7yjhird charge of +Q placed at one of the other vertices?

  Which of the following is not a vie*nypb o;n eh,1,xt(z m m160z+qck xector?

  At twice the distance from a point charge, the strength of tctsqh6hdg64 x70cc,*gih p l7 he electric field

  Is it possible to have a zero electric field value between a negative and pos6lay9fnssq /5itive charge along the li sl 5/aq69ynsfne joining the two charges?

  Is it possible to have a uxv7fn)0v5xzfrvi.: 6ry5 aqzero electric field value between two positive charges along the line joining the two charr:) av zvf ynqri0v575fx. x6uges?

  Electric field lines nec ifn8mlvsvi skd)l;w 95- 0m0zvw5y+ar psitive point charges

  The electric field shown cnu; r8 hw:q/ 71 u-;sycanfl(ra;fz h

  Can electric field lines inte7 h 2iao:e eekqsw*2nte e.x3;rsect in free space?

  A solid block of meta:xfz( h0wfg /hr 7y6lyl in electrostatic equilibrium is placed in a uniform electric field. Give a statement concernih:g 67wyf0f z rxylh/(ng the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal dumi kjpsm8,we w k5+11iameters are each given the same charge, the electric field (E) midwai k,wjws+85uep1m m k1y between the center and the surface is

  A cubic block of aluminum rests on a wooden kng,:mc)0 j gbtable in a region where a uniform electric field is directed straight upward. What can be said concerncn jk:b m),gg0ing the charge on the block's top surface?

  If a conductor is in electrostatic equia9l-c0s hn h/vf*wtgeq9 1 (xwlibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that isy u :qfhk3+f8u grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sph+yfuk: 38fu qhere has

State three properties of conductors in static equilibrium -58g:4*dsp oooke7so wxj(nz/cvko9.

State Gauss's law.

  The charge carried by o2km( pi+e1(y,fk udks ne 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 +2.03bara yiu((z4 98nmo k0 mC. How many more protons than electrons does this piece of pn3kimyo z rb4aau8(9 (lastic have?

  What is the charge on 1 kg of pr*d q5hrxkn/0.0ixefu otons?

  An atomic nucleus has a c.7qz hmmabq2i d-l-b5z(kqyog 1 z(j0 harge 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 my hwvs(+tr(n(C, respectively. W (vr+tn(syhw (hat 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 nwt-;gf+pt s 1them is 1.0 N. What is the magnitusw +pt-t;ng f1de of the second charge?

  Two 1.0-C charges have a force betweenl f0 z.psfv24w them of 1.0 N. How far apart are they?

  The force between a pd2 cfe(;7z 1c84,szlnd hac o*3. wyraoi3 gl$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experig0fb0 shy ,:k9gw) nsoence a 1.0-N force. If they are moved to a new separatkg 9on,fs0w y:s0)gbh ion of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axm-e ks57ej ud5uqhd97is. 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 ad9ue7mj k5dehsuq 7- 5cts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0+qsa,pq+pd/hle;axj z c ys +w*0i 0;c mC is placed at the origin, -2.0 m C to the right at x = 50 c+qwydh*xzeqsp/; +0la 0 a,c+p; jiscm, 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 positb vy 5k(nv) uv4/p34xjptvw)h ions: 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 magnbnwuvj /344px vhk5vtpy())vitude 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 point chnn3 c5lqbx fov.d;.2d-hg2hc arge of -Qnbfx cq.gl 3dh2d;ch2n. v-o5 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 = -1.0 nC is at (0, 0.10 m s 2nor 3-2p)adte*mtw); Q3 = 5.0 nC is at (0)e td 3o*2 rwn-pmts2a, 0). What 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 (0, 0.10 m); Q3v vfmm( jr7,;e g p4*qm9m5ola0o p7df = 5.0 nC is at (0, 0). mpe9ff4mj o7 *grl0omdq, av(5v;m7pWhat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC azee zvzf 7pvco525z 1;v/0na pre placed at the vertices of an equilateral triangle wv5zp7n51/0e vza o fzz2ecp;vhich 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 vu-mdsuv bz/+t/ 1 rj3htyp:(of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possibl 3yjdv1rb v /uzp/-(ms :t+htue 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 origicrrfu wg0b86 - 4l3ivun and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placeb 80i 4rgu3 f-lcwv6rud so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed a/g3 u 6g sbuv,vf8lju0t x = 2a. Where can a third positive charge +q be placed so that the force ongsl jvgufvu /03b,u8 6 it is zero?

  A copper penny has a mass of 3.0 g. A total o3f) *zcyvvb g zj:u.g1s 0+a;oqza d2of $4.0 \times 10^{12} \; electrons$ 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 td.7zlt8fc0niv at5r1 he force of gravity by the attraction of a fixed proton some distance above it. How far abocln i.0at58fz 1t7drv ve the electron is the proton?

  Two 0.20-g metal spheres are hung from a commona 6aom *gxbz04 point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads is0m*aaz 6ogxb 4 $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has aye u-d8fcz1r 2(u0 hvk charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from thef(ehuu -z81dkrc2y0 v nucleus?

  What are the magnitude and direction ofn;2hphv3hld ,+s aj gggud,9( the electric field at a distance of 1.50 m gd gh 9+(;u 2j3hnhapv,,sdlgfrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What b5f,h+i ,rj/ jyu coe-*, u cr.wvr)nkis the magnitude of the electric field at the location of the ro if,)/uru,-*hv+jnwcc5j. kb yr,etest charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dironp) : (8r9-fsvmkj gqection of the elecfpgkj s9nv:8-mq)(or tric field?

  A 5.0-C charge is 10 m from a small t8hx*ts7l2d1kw oy j p9est charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at th os8jd12lxtp w9 h7yk*e location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distancet+ek-.u 1oy vl *or h/t5d(xlr of 4.0 m. What is the electric field at a point midway between the two chargelyh xt v1-u.o5 (krl+r/*tedo s?

  A 5.0-mC charge is placed at /c )+9jppwh0j 3*rpjej:zxxg the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Whpe0 jgj3c xj)jphrz:wxp/9* +at 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 -4glw,ekx.ro*c, 5hv 0xc ir.)y.0 mC charge is placed x*.rvoc 5. )cwxrkhig0y,,l eat 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 plack .td *f/:o/ q mbg-yp3s1jpxaed at x = 0 and x = 0.20 m. What is the magnitude of the electric field bx-a/m. q 1*/f3:pyk tgdjopsat the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side le(u8vqs 9 i+zr4x2ejy1+p bz0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at thx b4usr 2 z j(+91+iyz8evlepqe center of the square.

  Consider a square which is 1.0 m on a side. Chary+3,ynebh ;l9qzd 9yfj) 0 ykia; hnh+,jds7cges 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 the magnitude of the electric fi zyily,79ed fn,n+hk);q9;hjjcy+y3ba0 dh seld at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a univ (l 7;mgiw;xvform electric field.; (7ml;gwvvxi What is the magnitude of this electric field?

  A particle with a charge of 3cuc/ .nuspgr04 pxk )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 elect u*o)o 8fawgb6o,/tmxric field of 6000 N/C pointing downward. What charge must be pt o6m) 8bgwx*/o a,ouflaced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of 22is9yw9 0bor6bs si *g7pdi n-2.00 nC. The ball is placed insidrni *9w0sb2piss76 o b9i2gdye a uniform electric 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 charge of + lp )o7/gbhwj+c.wi0l2.0 mC. What is the magnitude of the electricj hglw .c)/lp0w7b i+o field 5.0 cm from the sphere's surface?

  A metal sphere of radius 23;cf2nb qzz,z .0 cm carries a charge of 3.0 mC. What is the electric fie bzz,32 zncqf;ld 6.0 cm from the center of the sphere?