State the law of conservation of electric cn2(4o: dhaw( gbxeg1g harge.

  Is it possible for two negative charges to attract each othergzx/ s74ke*l zan - ;iqlf3z)p?

  Is it possible for a positive and a negative charge to attract each ot w0ce*2d;bj jg3 tgum*her?

  A glass rod is rubbed with a piece of silk. During the processh kypyby8fl66 7)(g bfe9udi 8 the glass rod acquiref 8 p6ylfhe9dk g(uiy6)78 bbys a positive charge and the silk

  A proton carries a

  The model of the atom shu83r- :tuj-1x3 awrdh l ux6crows a

  A neutral atom alwaysv i qx6ryo1 w4)v5-fbp has

  An atom has more electrons than protons. The, j-h0g;br:zd-y-x gx t9d nxl atom is

  Materials in which the electrons are bound very tightly to the nuclei hj)32-l6s pm0qpl x)n wx,fdv are referrs-,pflhmxx2np 0vl6q)j wd3)ed to as

  Materials in which the electrons are bound very loo7po wj ma9bo w4iud(+0sely to the nuclei and can move about fr497ida0oup(mjw +ow beely within the material are referred to as

  A negatively charged rod isxt2 avbnsxyz-t6* y08 brought near one end of an uncharged metal bar. The end of the metal bar farthest from -yb6 8*nst 2x yavtz0xthe charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They ar; q8e:;ui tfgce placed near each other on an insulated table. Sphere B is briefly touched with a; g:8te u;icfq wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an el+3s0zuf(4 apy pnn f/bectroscope positively?

  An originally neutral electroscope is brieflqmxx;8 af9z,:b ( 50rdsqvkkjy touched with a positively charged glass rod. The sxx: q 8ak0v;,jz fk9mrqd(5b electroscope

  An originally neutral electroscope is grounded brbb+du m1xh8u 7iefly while a positively charged glass rod is h7b+mbhd 8u 1uxeld near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves se ay /y2clnn)k4kl o92lparate. Then a nl )ly9 oay4cn2kkl 2n/egative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. 0nc*4 df2szr4iyg6xq A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along nsrc id 0q6*y2 4xgf4zthe 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 Coulomb consta;cya :ek7aj/u nt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is la aj ig*/a dox:czerte ;i(6p61rger in magnitude than the second char6zx:1oire ag d;a* t /ip(e6cjge.

  Sphere A carries a net charge and sphere B is neutral. They are pj,v ak n-z-4 tuc6cb2vlaced near each other on an insulated table. Which statement best describes the electrostatic force betw4n-ku-,vbj ca26vtz ceen them?

  Two charged objects attract each other with a certain force. If the charges on vtnh*z x 22t9yboth objects are doubled wxnt2y tv9 2h*zith no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive force)i( k wi0*+i*1yz49pmd rye/zt lheyks of F on each other. If the charges are separated by a distance of d/3, what are the ptmzzk/1e d y9)*+hiy0l( y wr4e*iik new mutual forces?

  Two charged objects attract each other.+/tsun1qg r8qy)t x:gll)v s with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separationt1rgn.+guy: ll v)tsqq/s 8 x) 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 b p* ujoq),zu)8i vdg1gy a distance of 1.0 m. What happens to the magnitude of the force on tgud1 ijvzo)),pgu8q *he proton if a second electron is placed next to the first electron?

  An electron and a proton u+vomtx/v qf3mhd((pyn 6*by6b 2ug8are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second 3m b6 vu2*8h+(to(yx fm6 qv/yugnbdpelectron is placed next to the proton?

  An electron and a proton are sep ok:dffaeptx z26ar (4cy(- /earated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the protonxz fdcoe:4y(-2kera(a 6/pft?

  A point charge of +Q is placed at the center of a square. When a s(29cpi a(e lczecond 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 the positive charge at the center of the squareapi (ccle(z 29?

  A point charge of +Q is placmmlic1v uuv6j2q)f)l ;,s/ djed at 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 magnitude of thesq6m/jcu 2llmif 1dv u) j,;)v force that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followihq e7u+7y,koo odb-r4 ng is not a vector?

  At twice the distance from a pointc*kf h 0wu-(k5p5ychk(;hd vl charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and posi,j6/tgn ujnq00w.o,.pb i 9 /inihx agtive charge along the line joining 6taugxi wnji0n.0bp n,gh9.jq, /o/ ithe two charges?

  Is it possible to have a zero electric field value between two positive 7yaosiqj jjun ,54.i3 charges along the line joining su ,yj.7ai qnio354jjthe two charges?

  Electric field lines near psitive point chargesyl ;t(vey ev/i412odlv; lw,z

  The electric field sho97 d ajaa-dpf5wn

  Can electric field lir;vud -:+piti wu,ra9 nes intersect in free space?

  A solid block of metal in electrostatic equilibrium isc;afo9 smuseqpqvlm+ ,.0:1 w6f5rvdn7mn 2b placed in a uniform electric field. Give a statement concerning the electrv9s 2d ,0wl1eqm; nv .cmfu6b5:qrofpsm7 an+ ic field in the block's interior.

  If a solid metal sphere and a hollow met ip9xjehipw1d0 a2santt/ 935al sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and9 2p 1 35w9/xeh0siapajtti dn the surface is

  A cubic block of aluminum kjfw1 :yrldo+/a4 er-f5 axbla(x9/mrests 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's top surfa9+:bdrx1y/-axo(rfl4jf / laemw5k a ce?

  If a conductor is in electrostatic equilibr/2-k xtq0jc:oxu 5l vuiys+ 2nf i+ge5ium near an electric charge

  A positive point charge is enclosed in a hollow metalljg6i* -o5ky6xcsh8 r* nuswd1 ic sphere that is grounded. As compared to the case without the hollow drk18*owg-nj h*ui6 ssyx 56csphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in sta3 6jcwfx5f cb2tic equilibrium.

State Gauss's law.

  The charge carried by one electron is c 7b.xdq:lum q /(bum2gom5v 0yk p;o8$e = -1.6 \times 10^{-19} \; C$. 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. Ho m7x-b5t9qxn m2xmixxup) +/ kw many more protons than electrons x )k ixm-q 9x/5xu2mn7+b xmtpdoes this piece of plastic have?

  What is the charge on 1 kg of proton 9jr,9yaabt7f7 xb ac-s?

  An atomic nucleus has *gx vv2b92yz +eb8 pvba 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 vad 8v w/vik+g3hlues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forc8/d iw+3gkvh ve between them?

  A 1.0-C charge is 15 m from a second charge, andvqp r+bj :b, x-nzir8/ the force between them is 1.0 N. Whatpxb z-+ir/qrn8,j vb: is the magnitude of the second charge?

  Two 1.0-C charges have ajq 17d*qig2r m force between them of 1.0 N. How far apart are they?

  The force between a ytl 5dna 3 /s9c1-rniu$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expx / (+o-2iw.idhjdsrxerience a 1.0-N force. If they are moved to a new separation of 8.0 c+d dx.w(h-2o ris/i jxm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis.tty/:26 )ckv x7xp4d hgcnp iz1-p*ta 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 ft-ycdngpv2/p x)hc :a x6 1z7 i4tptk*orce which acts on the charge at the origin?

  Three point charges are placed /bme c..1h-naosgd s.on 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, and +4.0 mC at the 100 cm mark. What are the magnitude an 1a.- ec bhnss/.o.dmgd direction of the electrostatic force which acts on the charge at the origin?

  Three point charges inui c , h5wt,g2v04axare located at the following 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 magni xi25a4t0i,wucn,v h gtude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the c5p hhg(n-h- dventer of 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 cha-v-g(h5hpd h nrge 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 = ;tzf2/t7c w ev5.0 nC is at (0, 0). What is the ;zv 27wtf/cet magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, d72aip7n v rz,0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on thenira zd 7vp72, 5.0 nC charge?

  Three identical charges of 3.0 mi;aj2(r .qf ,i)v2mxg irp5e tC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force w)r,qg.;jtii xai2mp( 2 refv5hich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separa9v dv32v+bohmg,h)jcg27 xg lted by 3.0 m. At what point, on a line between the two charges, would it be possibv2vc g7j,+2dvh93 mgx lo)gbhle 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 +9.0e1bw 7k-7b,sx3j/xjo bxetq ;-C charge is at x = 4.0 m. Where on the x-axis can a th77jx3jwxksb1e, qebo ;xb/ t -ird 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 = +;.xygkntg3w ,p ad3ciu 4+x s2a. Where can a third positive charge +q be placed so that txkiu+ 3s;t3 x ycgpag+,.wn4 dhe force on it is zero?

  A copper penny has a mt,5z j+lbxk,hg2e7ge ass 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 force of gravity by the6 9ryu /me .-d o nwjjxb8ms;lhst/g24 attraction of a fixed proton some d j-ej w.gsmn 8t osx/;96rbudy42lh /mistance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common poio)6vzeskpl:8hrt. s ;nt by nonconducting threads which are 30 cm long. Both are given identical charges, ar8 klvo;p:. )zsehts6nd 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. dl3s o)dvg-f1 What is the magnitude of the electric field at a distancedofvsgd 1l-) 3 of 1.0 m from the nucleus?

  What are the magnitude and d2wg32f . t wfoknq2lg)irection of the electric field at a distance of 1.50 2 qf. to wfnk)2wg23lgm from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is 5dat zce p/,l/the magnitude of the electrictecd// lza5p, field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dtsl-- yz9b8 xbq d/w,yirection of the electric /dbyq-, xz bwlt- 9sy8field?

  A 5.0-C charge is 10 m from a small test charge. What ia f pcb9bw 0 m3/1:v:a8dexhcks the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charg1 0c:d8ew/fb cpbavx:9a3k h me?

  Two point charges each have a value op(6wc rgwdi m1; n-7jp x:s3dxf 3.0 C and are separated by a distance of 4.0 m. md(6nwp 1j rxcwsdg73i-p: x; What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meterio4ei dg59pr,iu;v y0ky4vof)c p;oh 9gsq95 stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fie4v,kfs5ui;o)g5 v gooph49y ceqd 0i;9 9yirpld at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm milpha 2ijl-w i9h4 .)mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Atj mlp9h4 l- i.)wiha2i what point on a line joining the two charges is the electric field zero?

  Two point charges of +3l immuhl3 srg1lwvh. 1/t17,gp 1nz n5.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. Whthw11v nl3gumlspn ml1,h 5r z7/gi 1.at is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sa.n;. xu*yqw a4v(nnqide 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the4 .nvyanqu(aw*n .q x; square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corne18j;3zommia,k ucnj 2 l7cre/1/ v15chkcgr yrs 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 tyh2o e1 5z1 r gk8c7i ma/; mv3jjcc,ln1rkuc/he 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 inr7i4 m0x,vlkqu9:ef d a uniform electric fie7 im :kre9 d4ulq0fxv,ld. What is the magnitude of this electric field?

  A particle with a charge ,l ilo(im+r g3yais-kxzq-/e8w --dw of 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 electr(fjo * ag8 +egmbte//dic field of 6000 N/C pointing downwab* jmf//d o(8gaet+e grd. What 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 plxmwuc. :/tunl )5ds0baced inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the e:muut dns0lxwbc5.)/ lectric field?

  A metal sphere of radius 10 cw/: bre6/ jk2oo:pnpknw1.a xm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surface? be nx:nko/.prpk aw16 /o:jw2

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What k107pr ema3p1,:w wo ikua re1is the electric field 6.0 cm from the center rkp, kio 1eawm a01 re7wp3:1uof the sphere?