State the law of conservatim;tx1 uhph iq-)*hfw*mcw1u1 on of electric charge.

  Is it possible for two negative cha kxzbr3:g1um1 rges to attract each other?

  Is it possible for a positive and a negative -n3k+hhb q oqem mg.a/i46v0h charge to attract each other?

  A glass rod is rubbed with a piec(n nxt9iyca,2e of silk. During the process the glass rod acquires a posnac2t9 ix yn,(itive charge and the silk

  A proton carries a

  The model of the atom showsa)pemleb- w i1p/i ci /42)vip a

  A neutral atom always haslg 9(ijn50)8d5btkgge7 n jy8ta p-hl

  An atom has more electrons than pb zvf/qa0c 5zbb*nf2u+3 l;ddrotons. The atom is

  Materials in which the electrons are bound i3sqk4uk gqvu :aa0(9very tightly to the nuclei are referre(0k auq4uk sia3qg:9vd to as

  Materials in which the electronslh5.(eryxp3nx)9lkj 0 j x(h c are bound very loosely to the nuclei and can move about freely within the material are referred to asph3(k(5x.n0 cljy jxe9)xh rl

  A negatively charged rod is brougwzz+)cehr,yci68 ri,ht near one end of an uncharged metal bar. The end of the metal bar farthest from the charg8izrzy)ic+ wreh6 ,,ced rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They akn+/u 4 e+sncure placed near each other on an insulated table. Sphere B is briefly touched w/nku+n+ sue4cith a wire that is grounded. Which statement is correct?

  How can a negatively charged rod s(u ekvl a;1oom03z2l charge an electroscope positively?

  An originally neutral electroscopep0 x6i msk*gc8p xk5y; is briefly touched with a positively charged glass rod. The electrosxip pk608gm*x 5y k;cscope

  An originally neutral electroscope is grounded briefly while a: o ;+d,0uvmsh mqdfo* positively charged glass rod iomdq :mvh+ ou,;0dfs *s held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and thj)cmm im5:7b*bxd *og; xgvn5e leaves separate. Then a negative object is brouob*5 5n* xmgvdbi m7c;jmx:) gght near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively c*4t)7e -o97vks)mbbl 2d r/ezbyxj qaharged object 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 alon9b 2eo* el7k qby-7)/j4xrdv)tambzs g 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 the8 q6w)yktlqg,oh;mp 6 Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a d)oa9qkt1f3m ab9 pzi6 ,zo.zj istance d. The first charge is larger in magnitude than the second ch,iqa9 jzma z36b)k.t1ozo9fp arge.

  Sphere A carries a nea.q0 :4+riqxpady *eft charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the elre4iyfa 0aq* px d+:q.ectrostatic force between them?

  Two charged objects at51htre * kwvv;jz+)b*srb j sf 3k,d8dtract each other with a certain force. If the charges on both objects are doubled with no change j35,re 8svrbw j+t ) ;f*vs kd*dz1hbkin separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive fojw2p /2ewh 5r 8yt)fqvrces of F on each other. If jpwwye f2)v2th q5r/8 the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a for1 :9n(u3rt0 uwtfx/,rdy9e ib r.amboce F. What happens to the force between them if one charge is doubled, the other ce91nry 39 b.uu(:,ofwt mr tirdx0/a bharge 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 di b w4-fxkr95.m j3p,xi7leylzu*zd :hstance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the fh-:x e,. 4k pr35zl9*wfu jxm7ydi lbzirst electron?

  An electron and a proton are separated by a distance of 15ahfsp*v n 25p gbyjqh 7nv2 d;r2y8z+.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to r b5h5npn+ 2pf7vyq2 vdyjsa*g8z2h;the proton?

  An electron and a proton are separated by a drq83h,g69d ic mvo6p oistance of 1.0 m. What happens to the size of the foh,6i 9qp mdg68rcv3oorce 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. Whe+urvfd *k:oq7 tt j5,pip.g ,en 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 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 fot,:kivu57+ftepp* dq.rjg ,orce acting on the positive charge at the center of the square?

  A point charge of +Q is placeds)i49 rof r2lv 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 the force that acts on the center charge due to a third charge of +Q placed at onel ori)49sv 2rf of the other vertices?

  Which of the followik/+jks27jkm t ng is not a vector?

  At twice the distance 6rhxd v ra+76hgoz(y9 from a point charge, the strength of the electric field

  Is it possible to have a zero electric field val 9( h4)vi8swvfoi ku-cue between a negative and positive charge along the line joining the two charv8-wf(4i sk o9ivu) hcges?

  Is it possible to have a zero electric field value between two positive charges gsw2qoji )s7/ along the line joining theiqj7/sgso2 w) two charges?

  Electric field lines near psitive poiai c apdesws0frjart a0 ,mi9.i;* t4)41hy+g nt charges

  The electric field shownw/ r grx)op8 sjrtu+l 698ka,u

  Can electric field lines ixyh9d odri( fm;h(9n7ntersect in free space?

  A solid block of metal in electrostatic equiq-+q x t5thvv2librium is placed in a uniform electric field. Give a statement concerning the electr txqhvq+v-2t5 ic field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diame55lu gfa8sr )wqbr3n4 ters are each given t 4sn)g 5lw8 5rqarf3ubhe same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wm bz7i9 sj60zmooden table in a region where a uniform electric field is directed strbm 06s 9izmjz7aight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in elect ksigzpqgrb18 x)ouwa3 10.+e(l6 mznrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hol t2h+mc d/eiw61n5 smqlow metallic sphere that is grounded. As compared to t si1+td nm2mewc5/6 qhhe case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equivni b*:-kx:5fxo 3q7* itypmb ,o(ljelibrium.

State Gauss's law.

  The charge carried by o,-z)swvz g/bv )s:/hcgm q6 aqne 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 n;+0zvq 6 d (9eytwyrqiet charge of +2.00 mC. How many more protons than electrons does this piece of plastic d;y6 ryiq+9vz 0twqe(have?

  What is the charge od*bi ,d.1whdvn 1 kg of protons?

  An atomic nucleus has a charge o) wmy9.vrg kow;u5n c14v*ch cf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated ( oauv qcc3 h08nlqr(5pow9 c:by 1.5 cm, have charge values of 2.0 and -4.0 mC, ren5arc w9 cohuq:( 3p0(vq8lco spectively. 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 betwe9xs7hw /;1dbymm/ agq en them is 1.0 N. What is the magnitubx hqdmy a17/;sg/mw9 de of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are t9e9 p,fr-:azp9shm0 gy ko3hthey?

  The force between a 7o7pjp 3 v 28ery64mhwwgo;sx62t ljys jg6l-$30 \; mC$ 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 force. If theel73-zd3 pk jqy are moved to a new separation of 8.0 cm, what is lqp 3ekz3jd-7 the electric force between them?

  Three identical point charges ofam/sd*16a.6kd nki; ib .hhdp 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 and direction of the electrostatic force which 1pd ;6maahh6 /idk.sb *kd .inacts on the charge at the origin?

  Three point charges are plac exq0l*yjhv rk 70xq 3ej)s/)ted 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. Wlq jh 0 r*sv0/ y73xee)t)xqkjhat 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 = :w0oovdqw f;0 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 magnitude d vw00o: ;wfqoof the force on the 3.00-mC charge?

  A point charge of +Q is pl3 vhvra8 v2bh9aced at the center of a square, and a second point charge of -Q is placed at the upper-left corh2v vhv9a83b rner. 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, x4em auq;zj(t teq). ih ;ojgi87 7 7inp4cwp20); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude o7zpm q;. )7(jtu4 oheig8awtx 4n ipc;eij7q2 f 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); Q+idz) t ia+(ik3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charidzt +i ()k+aige?

  Three identical charges of 3.0 mC are placed at the vertices of an equila m,)mmgksn7uojr)3 ;p s bw20wteral triangle which measures 307opmk30,gw jb m;))sr 2unswm cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and f6 4hwp+-ykhss.z s :a+4Q, which are separated by 3.0 m. At what point, on a line between the two charges, wzsk6s.swah+ ph yf:-4ould it be possible 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-C charge s 51g+vd(bt5 h5/detz7zyb diis at x = 4.0 m. Where on the v 5ytzzdge1th75b 5d d +s(/ibx-axis can a third 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 = 2a. Wheyqwkjkn8pdd.syj3 77ye8 d56re can a third positive charge +q be pd 78d87pskwdk3q.6jnj yy ey5 laced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total optj(tvbt *jo2v m(:a 9f $4.0 \times 10^{12} \; electrons$ 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 grav+.r w l:gyy7*i zrdp:rlq7to: ity by the attraction of a fixed g*+r dy77rri.tp::qloz lw y:proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres aruz1k7wh 5tm .qo tl6i.e hung from a common point by nonconducting threads which are 30 cm lon6ol.wiutm.51 qt h7k zg. 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 m8lqt/g0 u36:/nnf r*cglf c mmagnitude of the electric fieltf 06 *fcnllg unm//q:r8cgm 3d at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dista 4vi4 es8p;q .pw:kfpnnce of 1.50 m from a 50.0-nC chargei48 4p.pn kvq:p;swef ?

  A 5.0-C charge is 10 m from a small test charge. hnbg,t3a. c0;v .w gohxpne19 What is the magnitude of the electric field at the locgxcbho,gnpanv .t.hw1;9 30e ation of the test charge?

  A 5.0-C charge is 10 m from a smape :v7kuo 5u3u.mm x3b 6yv.jnll test charge. What is the direction of the electric fieu vmjx.3vuym5 ue .6 kn:3ob7pld?

  A 5.0-C charge is 10 m from a small test charge. What i:gth- d wdtfj9,cs l*(9zdq 4e8)ovqrs the magnitude of the force experienced by a 1.0 nC charge placed at the lf r: 8s)t9ev(9-zt4jddh*cqgl dwo,qocation of the test charge?

  Two point charges each 2+nqw7: cn*-l7bp4urkq hlyghave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chaq u7h lln2k4pr b q7*g+:n-cwyrges?

  A 5.0-mC charge is placed at the 0 cjq5;cp mg* u7px-d6vdm mark of a meter stick and a -4.0 mC charge is placed at tmppqdc7 v-j6 ;xg *d5uhe 50 cm mark. What 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 andp h1xa:.qvfxjqc 62hza27 v: s e4z2cz a -4.0 mC charge is placed at the 50 cm mark. At whatqpfz 6 ave z2s1az 4:qhx x.jcc2h7v2: 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 pl lqn wudlas9 shgp,e1r.0za .gt+0::eaced at x = 0 and x = 0.20 m. What is the mae dwn:a1lgt ha : .0.9s,0srql+e pugzgnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 ;rix3a 3 ztk,/;gpk nvm. The last corner is occupn3;/a i, gkxp3; kvtzried 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 placo zv97h7 yk d,ch;vn/ded at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); 7o/cvh vhd ykn7;9,dz +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 unifory7tuv4qo r-3c a2oid4 :uig+wm electric field. u:y+ucw3 oovg-t4drqi i724 a What is the magnitude of this electric field?

  A particle with a charge of 4.0 tdy r7a0*9(w ,fmncgrmC 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 0.1(qnjyk 33v3 42gj ywjm+5 envn20 g is placed in an electric field of 6000 N/C poin vgn+jyevknm 3(52334j wny qjting downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g car7ajmam2 y 6lh60d:jdi8dk,h ories a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magn 0hok:66m7 yd mijdj,a2l ad8hitude and direction of the electric field?

  A metal sphere of radiu o/z6u1 r y;w2vwsjjdu4:7uc us 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere'souv:z suwry 7 j2 6;1dwc4uu/j surface?

  A metal sphere of radius 2.0 xl*ys -yhi-d:r0ec ;wcm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the ceyhrx*c0lwid es;--y:nter of the sphere?