State the law of conse +.o o/x;;;mzm icsrqsrvation of electric charge.

  Is it possible for two negative charges to attract each h(.wz+ sgeg a4((7c xfij orn)other?

  Is it possible for a positive and a negative charge to attrac qn q(d:9qwj vu7dqsa)1z2(r ct each other?

  A glass rod is rubbed with a pimv p3.tox -;z1b yuo;) fs;bnlece of silk. During the process the glass rod acquires a positive charge and t;vbyx ; .)no-ol ms31fb uz;tphe silk

  A proton carries a

  The model of the atom shob-qm7 x+m.pyxnv7-t dws a

  A neutral atom always ha91r tkri lns5)bs(4 3-swb b*skgb5lz s

  An atom has more electrons than protons. Theqi3sug06 oq cx zsddy.m,7h,/ atom is

  Materials in which the electrons are bound very * ahmidr w2m,/b ij7 x-.z,fbatightly to the nuclei are referred tr,max zw f-ahjb,ii/db7 .m 2*o as

  Materials in which the ele-ihyat pybom 5nvfgf1- *+a ;k*g s3d4ctrons are bound very loosely to the nuclei and can move about g go*+t ny*fva5df1im- 4 3bpyh-aks; freely within the material are referred to as

  A negatively charged rod is brought ned/p2 w aqvq,ej5 ,a8vsar one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be csea,q qj a8 dv,5/2pwvharged

  Sphere A carries a net positive charge, and sphere B is neutral. They /18) ou+kdgzcmk - hsmare placed near ea8gkcm -+z /k)hsod m1uch other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosconz5su*c 7 gfz1u0gue/pe positively?

  An originally neutral electroscope is briefly touched with a positively:e3syd1ws w(hsnw 0 3.-w wcrq charged glass rod. The electroscods 30whq1y- e.3(wws wns c:wrpe

  An originally neutral electroscope is grounded briefly while a positively charfcc y) h*s. )dfz94yy1l h9e,n sajy0iged glass rod is held nea*0 ces9fy)fyiy4 9.l) zshhnc1 ,jday r it. After the glass rod is removed, the electroscope

  A positive object touches a neutral elecc423.sfa c4 fbs.ynyz:,l p qqtroscope, and the leaves separate. Then a negative object is brought near the els 4,ayl.fp4sc: ny zq.fc32bqectroscope, but does not touch it. What happens to the leaves?

  A large negatively charged 4:50* fdtclxha jl4l uobject 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 forward, but does not touch the negative object. Aulj0hflt* l:d c454xat 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 Cou19vt qyruyhoe 7hanb75v:p1 .lomb constant $k$, which appears in Coulomb's law?

  Two charged objects ared :ut.6t*0 i.cu75hty;,oby ujb zw pa separated by a distance d. The first charge is larger in magnitude than the second chauj,yt6ut:du7 . y*;tba.h5 cb i 0wopzrge.

  Sphere A carries a net charge and sphere B is neutral. They a q,v h hkixdnp9/zu*gzs) k;1/9f 8xljre placed near each other on an insulated table. Which statement best describes the electrost,*i 1l)dkpk8x;s9//znzqujfv xh h9 gatic force between them?

  Two charged objects att(z2 zeja/ .ghtract each other with a certain force. If the charges on both objects are doubled .ta (zg/zh2ejwith no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attraax- eyov gj/ay6)q )8nu5)p:bllm8w active forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual o-qay :xj)8lp mae8 wvlb )un5/ a6y)gforces?

  Two charged objects attract each other with a force F. What happe3znwnz,21 kupj gf) s vvar*wv- c,/w5ns to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to onanv5w -u* wr z3zc, /v2sgwf j,vpn)1ke-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What hjy+i p,fa1o3 tappens to the magnitude of the fo+yopf1i, a3jtrce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens jx);oyw- wp :kto the magnitude of the force on tywjx-owkp);: he first electron if a second electron is placed next to the proton?

  An electron and a proton are separattzfefnq 07 i,8ed 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 proifez 078ftq,nton?

  A point charge of +Q is placed at tk l 9po ggb9km yc9u/)2.rmk4nhe 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 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 electrost9. pc/92ku9 kklgom r)bmn y4gatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the 0vu-vi 4dfd7+ot-o j zq 7:bohcentroid of an equilateral triangle. When a second charge of +Q is placed at one of the o-t4 hi- bdz +uv7qj: v70ofodtriangle'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 n3k )evag7ff2oxt +1erk4oa; z ot a vector?

  At twice the distance from a point charge, the strength of thek3ryay21utv 2 electric field

  Is it possible to have a zero electric field valueztv2jp0,6e n g between a negative and positive charge alongj,gz6ev2p n0 t the line joining the two charges?

  Is it possible to have a + acyc6hs. z2ksrx* (dzero electric field value between two positive charges along the line joins.*z+ yc2(dxrahs6k c ing the two charges?

  Electric field lines near psitive poi vd6*xhasy 1u8dm9o0vnt charges

  The electric field shnaycp*nch 7 onz,/ bgeq)( 8t(own

  Can electric field l vh e3 z3zhyjk;:kra)f)g1fc+ines intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elecg3;o1g sv(9bvb,buyt o*x whu16 e no8tric field. Give a statement*o h yg81bet1vb;,vbwg(s on9 6u3xuo concerning the electric field in the block's interior.

  If a solid metal sphere and ate2sz 7m d8.pq hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center az278dp sm.q tend the surface is

  A cubic block of aluminum rests on a wooden table in a region where a wu/k55 vzitr 5uniform electric field is u tzwk/ 5vir55directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatik1gzy tg,l,- sv(4ukmc equilibrium near an electric charge

  A positive point charge wx/( xmmokr+:e*.swp is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a poe/ r:km p+x wo(xw.ms*int directly above the hollow sphere has

State three properties of conductors in static equilibrium )i9 dh+a+zbj3 zapc:m.

State Gauss's law.

  The charge carried by 85je lg*nyts41yhc.qk 5vz 4zone 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. dzz+xo3 :-teu00 mC. How many more protons than elexz 3+ :uetoz-dctrons does this piece of plastic have?

  What is the charge on 1 kg ofdq mbh1do5)d5y*fxd f .k ij9newp /87/qz3lc protons?

  An atomic nucleus has lof 3zlk3je.0l b: .ui,d.utr 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.vac3g2r+sj p *4ryl0 t0 and -4.0 mC, respectively. What is the magnitude of the j 0vy s+lct2p3r4*rgaelectric force between them?

  A 1.0-C charge is 15 m from a seck)/xr.dp 6z 0mz,nm vbond charge, and the force between them is 1.0 N. What is the magnitude of the second ch, vzn 0dz/x m)kpbmr6.arge?

  Two 1.0-C charges have a force between them of 1.0 N. How 61/ kahv9hts(jm3f (*q nbwh5ewrq3t far apart are they?

  The force between a 8jv w1hw3 , d d1fmx3dgin-zav9j30bs$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm ran+y th. /oi8apart, experience a 1.0-N force. If they are mo. ot+ri/ah8ynved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC1etqb+cb t* +i are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 *+bi1qt t +ebccm, and the third is 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 placed on thri,w p+/cpns*2aph7 we 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 magnitud/wa2p7* ,sp cpinr wh+e and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the followin3r,,-omcq nfu g positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 =o,qfucn3-,r m -5.00 mC 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 a second pointa1 jr;(i 0di( hmvj2oe 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 charge at the center. What is the magnitude of thei ;mehrji(j 0 ovd(2a1 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); Q2ku34:*9xhs w d3hiuey = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the maw3 x9ye:hu d*iuhks34 gnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0mf1;jdve5 7w q ww,gkam98. zb); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is gq89w1aw;m,5bf . 7mkjevwzdthe direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pl5 ;ix/t sa: pg*hcfgh2aced at the vertices of an equilateral triangle which measures 30 cm on hcat;i25fs:g*hp g x/a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wha39cu /fg7 hhrbt point, on a line between the two c/7b hhrf c3g9uharges, would 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 t6p fg/y 5pze*t1o9hdw3,bo cn he origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so5ob 9c,f* hp6/tdg13 npyozew the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is plajyo9/ ty 4yj8:dg6bosced at x = 2a. Where can a third positive charge +q be placed so thajd yo98t j/yos6:y 4bgt the force on it is zero?

  A copper penny has a mass0fs5ed4i8 (h:zmy jh2 zwxufj(l3b(geh3p9r 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 ty6o(v 9jp)zu97ip0n secit. che force of gravity by the attraction of a fixed proc6eoi y9p u7v0jz()pic t .s9nton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point bf b 34e6l yg3bypvxj7*y nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the th4b y7*xe bp 36lyvf3gjreads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magni.iyg th:xjiz m st,779tude of the electric field at a distancey ii7z mtx,:9gth7. js of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field atb kuyi9:2lbe* cts/ 3e g0h)cy a distance of 1.50 m from a 50.0-nC chc3y)0hul* keibt:gys 2e9 c /barge?

  A 5.0-C charge is 10 m from a small test charge. What is a/v6azd0 /k -kuwd*g vi*:qeynqu- 8sthe magnitude of the electric field at wzds*q uk ug:yadevv n a//q-068-ik*the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of th dj. 2nefngi9dbjlt e);f,85c e electric j5.e)f,idbln 8gcjeft ;n 2d9 field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituqsoo wb3cb4awyr-+ 2i; c4 9xmde of the force experienced by a 1.0 nC charge placed at the location of the tb i som2+ xwcyqc -w;r94o4ba3est charge?

  Two point charges each have a value of 3.0 svwt2qou a *ik/1zb)sol. 7f1C and are separated by a distance of 4.0 m. What is the electric field at a po7)bs/kuva.*oz2qi fwlo1t s1 int midway between the two charges?

  A 5.0-mC charge is plas*s 32a+jw )vdtc ,yfjced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fielcsya f2ws+*dv)jt, 3jd at the 30 cm mark?

  A 5.0-mC charge is pzx65t5g myy)v laced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the5 zvx) gyy56mt 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 n16njoz)nh i2 :z.c bkmC are placed at x = 0 and x = 0.20 m. What is the magnnbn.o:jkz 1h2)6cz in itude 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 0.50hp-rip (ng64r m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square. ripp64hn(gr -

  Consider a square which is 1.0 mc6 5)rtvhcn*x3mj miw i5v.-9u9 osdf 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); -3.0 mC at (0, 1). What is the magncm 5-5 rnvdi*3.tu wf6mis9j9oc)xh vitude 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 inra (8ykmfcah5d*a,h2v l2 +7dfba m e/ a uniform electric field. What is the magnitudefaah2+y7kfmb ,cl2 e/dma 5*drvha8( of this electric field?

  A particle with a charge of 4swc32sb(h.d;cjpy fp1(ya) v.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 elec20 o*.j4fuozj y9y psktric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be su4 .ofjj koz* 092spuyyspended?

  A foam ball of mass 0.150 g carries a chwz:o,, b jbm1uarge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of tbbuo, 1,jzw:m he electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnit6gkoa+az- 3+ hcijtj 6t c:k.cude of the electric field 5.jko: 3 +.c+iatza6c6k-tc jgh 0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm caru/r, eu23 ldni7zr4 jyries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the spherd u 7j/zrelnr,u3yi 42e?