State the law of conservation of electric chxw6xs/ cok2p2 ifpb--o4k0myarge.

  Is it possible for two negative charges to attract 4am k00ymu5ox each other?

  Is it possible for a posi ec 9d+1,xb jizn0uz6otive and a negative charge to attract each other?

  A glass rod is rubbed with a piece m;i4sk3;b8n8o :cpwjiz py f7,0dscu of silk. During the process the glass rod acquires a positive charge and the silkf3 kw; pc8ijsc,no08 74; y:pzum sibd

  A proton carries a

  The model of the atom shows a) 87sn;/h-ae tuaq nua

  A neutral atom always ha8(scm 8. x :9blhh*tqb 5 stg)w(a pjxi5ni8gcs

  An atom has more electrons t5iybgd;+ -pbym l 3jt5han protons. The atom is

  Materials in which the electroi h.qafu d 15v2-weu4qns are bound very tightly to the nuclei are referred to asvqi1fwd4qa5 hu ue 2-.

  Materials in which them2fip : ud23hpr ) kigz;8udg9 electrons are bound very loosely to the nuclei and can move about freely wit8kg u9mddz32:pifp ug2 ; ri)hhin the material are referred to as

  A negatively charged rod is brobep. k mrhc9*,ak txybs01c(5ught near one end of an uncharged metal bar. The end of the metal ba* xytkhbk1,b9m5r .p s0(eccar farthest from the charged rod will be charged

  Sphere A carries a net posi9v: gti92 7pkcbw.ki wtive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is ground ikktw cib29:7.gpw9ved. Which statement is correct?

  How can a negatively charged rod charge 1ut gx.* ok4w:9wp ybkkydn4.an electroscope positively?

  An originally neutral electroscope is briefly touched wifjea9wr3 4rp )th a positively charged glass rod. The r3fwpj)ra9 e4electroscope

  An originally neutral electroscope is grounded briefly while a positiveld6 ;uq qh2:dtmuq , i 7ea8gvv+;o/flry charged glass rod is held near it. After the glass rod is removeq :7rda/ f8+liq;2meh ;tqvudgvu 6,od, the electroscope

  A positive object touches a neutral electroscope, an ,x6vbtiv7 m)j4 uf6pzd the leaves separate. Then a negative i6)jfx76tu4pzvm ,vb object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively chz;r *7qynv(a(n+wif0 (kvvj aarged 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 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. At no time does either ball touch the negative object. What is the final cha y+0 vi(aq wr*(vf(;ka7nz njvrge on each ball?

  Charge is

  What are the units of the Ck.xz wn6.is8boulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated pu9;ubv3o l3e deg x,k ..t).iqrqxo7by a distance d. The first charge is larger in magnitude than the second charoq..7 exu okvg; i)r ,.txl93du3pbqege.

  Sphere A carries a net charge and sphere B is neutral. v u-zol( 3ixl;/z-ao 4vpbx +dThey are placed near each other on an insulated table. Which statement best describes the electrostatic force betw+z pbdzl a--i (ovxo3lx/4uv;een them?

  Two charged objects attract each other with a cg k.j fs0jch()ertain force. If the charges on both objects are doubled with noh(j0.gs jf c)k change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcg hytim 9*:rertw;5y-es of F on9wey5hm*;y :rgt i -tr each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forcbqjy is x 8zfg00t)2q4e F. What happens 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 one-fourth its original value? The force is q)8b qx2t40 j yis0zfgnow equal to

  An electron and a proton are separated by a distance of 1.0 m. What bz5 r ;i*v6h-;euymme happens to the magnitude of the force on the proton;vi z 6ur- ;embme*y5h if a second electron is placed next to the first electron?

  An electron and a proton are separated byi5u n. osv)s1ik( fm(v a distance of 1.0 m. What happens to the magnitui1u.o)mvi v kf( ns5s(de of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated byalvm1 dp m;j:76ufn/b 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/pj71b6n: ;dmuvfa lm closer to the proton?

  A point charge of +Q is placed at the center of a square. When a seconljo742wd e8ufz x(s1nd 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 actin oj4esu 7f1 2dxl8wn(zg on the positive charge at the center of the square?

  A point charge of +Q is pla,6scn i9c*tur.+s bd-r6ith7pdq(wr ced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertpsrq-*+utiic ,r(c97b.6s nw hrddt6ices, 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 very u rg par:5mtsz)s).7lm3n. ctor?

  At twice the distance from a point charge, the strength ofz7tcqp* t )fk+ the electric field

  Is it possible to have5 x.yzbpwd+db(k1 l1o/gel a1 a zero electric field value between a negative and positive charge along the 11lx/degyd1b.+(aklz bp5wo line joining the two charges?

  Is it possible to have a zero electric field value between two positive cha ; ,,wegksu5pwrges alos, ,kwwe; u5gpng the line joining the two charges?

  Electric field lines near psitive t ep(;;g fi+w,b2zh phpoint charges

  The electric field show814 dkcnrnui7 n

  Can electric field lines intersect in free se lu,i+(g:* 44idpb kytypf .fpace?

  A solid block of metal in electrostatic equilibrium is placed 73dlw: ocqfp7 in a uniform electric field. Give poc3f 77d :wlqa statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of es;jidxlz 9r4 ,.0a2mwbubs( x qual diameters are each given the same charge, the electric field (E) sw, 2.l9rb40amsj xb(udxi; z midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a re0 qrwxj j :gw1/inj7t3gion where a uniform electric field is directed straight upward. What can be said concerning the charge on j:qwg/7x jw1r0j tn3ithe block's top surface?

  If a conductor is in electrostatic equilibrium near an electricm*sxq1 xr1 3 e,omy/zl charge

  A positive point charge is enclosed immeho7:f t d2;n a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly abo m2;f mo:the7dve the hollow sphere has

State three properties of conductors in static eqsf/1em obc2m 3uilibrium.

State Gauss's law.

  The charge carried by one elect ,(gahjp1i3ndron 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. -oxfgstyks, 3;t5tz:6 dk i0xHow many more protons than elecxitt3,: ost;dk06zxsg-fk y5 trons does this piece of plastic have?

  What is the charge o* 8gxg mdb45xoao.ai)n 1 kg of protons?

  An atomic nucleus has +gyz0: ac26ri; fp*; gpryn usa charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatez*obq8 1 zj7ibp9 efw+d by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively.f78* owb1qjz pze9 bi+ What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second q,tcb+ uvych sz37bwt786a+o charge, and the force between them is 1.0 N. What is the magb6stv,ct8++qy 7h37uwc b oaz nitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are theylkd )yjz/-v n7 3*xmvs?

  The force between a x*c3 es9;lrz h$30 \; mC$ 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 fz;mh vn+/ zy/0wsrou(orce. If they are moved to a new 0 z(//zuo h rw+vm;ysnseparation of 8.0 cm, what is the electric force between them?

  Three identical pointej3w,s 2dc*k9xl xd *;;wgsdt charges of 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 electro 2l,x9s *etdw*sx;jwgkc ; dd3static force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is pla.f mt 4pm8oczmoml, **:pgcl;ced 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 and direction of the electrostatic force whi tpgc, o.;zmmlmf *p4:m8*locch acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 =-9(+ddsv- d rah8fkn2kqtp+eqh4 eb/ 2.00 mC at x = 1.00 m; Q2 bpk/-hs-kdq+84d2(hf n+9vatqe der = 3.00 mC at x = 0; Q3 = -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 aeqykwag0;+/sm 1 ziw 0 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 charge at the center. What is the magnitude of the force that acts on the cen k;0yi m/ wawq1+s0zgeter 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.h3iqdpdw t9k71f u: f,ra* a1m0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0)1h : d*7rwftiu3 ,m9pk f1qaad. 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);du rhvlpo 1m atd,947: Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on thpd:ruat4d m,lo 17h 9ve 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaters .lgh bi+mn,m)j0 9aual triangle which measures 30 cm on a side. What is the magnitude of the electroshmb9,na .l j0ig)s+mutatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which x4*ha lkhk0j4are separated by 3.0 m. At what point, on a line between the two charges, would k x hhalk*404jit 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 is at x = 4.0 m. Where oytdg )14c,. xsx,kvd8 u1ok ynn the x-axis can a third charge be placedd kg1,st,d4nyy 8 c.ovxu1k) x so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placedsmd0f b*tmu ,2 cor61i at x = 2a. Where can a third positive chargou6s *dm ,rm i1c0t2bfe +q be placed so that the force on it is zero?

  A copper penny has a mass ear5 + 3i9m3 2cqsns-yq 5vf cqkgk6/mof 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 agains6t2be. , sexi; q(;pzu0 r*-xorsfcwd t the force of gravity by the attraction of a fixed proton som,.6;e *r-;02f(brtqesx pw d zcusxioe distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a ckns1f l+r+ukdiphu r3:1r )v4ommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart unt)dkhiv:4usn rr1 frp+k1u 3l+ il the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +4m5+q dx65fpdc9 ,tqin0e. What is the magnitude of the electric fie95 p d+,qnt qi6m5dxfcld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.5ddta ms2s flwy3i;l6im 2gqm; 5:tt-30qmst-6fw 3:mmt 3d;at sg;yll i2 5i2d m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the mapgr2cz)om -o1qn4 srp3cw* hs2s je,-gnitude of the electric field at the locc hqpj3sg2--sw ,z 1o ronr)2* 4secpmation of the test charge?

  A 5.0-C charge is 10 m from a small test chad6hy/ 94b 69uwo et i70qa::j t(iucam8vipzsrge. What is the direction of the electric fieii4a:/z96dteju ytv:0 pb w im 96c8hquas7(old?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the 6 r3 vzel qq3fm.h-1epforce experienced 33l1 zeqhf-evp6 .mqrby a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance o ba3xayumn3hv 98(g w8kom/,pf 4.0 m. What is the electric fielmab8(anxy ,vw 3 ogpk93mhu8/d at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick a84nueu4y dq axzl6 si(,pk6n,w,va1z nd a -4.0 mC charge is placed at the 50 cm mark. What is tu8s qdvu xk1, pi wn4nzzye6(6la4a, ,he electric field at the 30 cm mark?

  A 5.0-mC charge is placed atx3 /kqydlyu6p u9 g:5w the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joininw: u uy9 36ygqd5pklx/g the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x =v.lgqf cw86f ( 0.20 m. What is the magw 8ffcvl 6qg.(nitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square om)cplvqv5 9 5 0;lcnxcw5fkog b9i 6o/f side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electr5x6v/95nql o9 0 cmowcvcpfb;i5l )gkic field at the center of the square.

  Consider a square which is 1.0 m on a si+ j/ rsxu9 8j0cosm)6o1 wltrade. 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 magnitude of the electrcosr0s/tx oa 86m )w ulj+9rj1ic field at the square's center?

  A force of 10 N acts on a charge of .1mlne(:+ v6c1 aple z wxqjx15.0 mC when it is placed in a uniform electric field. What is the magnitude of this electrix1xc:ew vpjml+1qzlea1(n. 6c field?

  A particle with a charge of vty) qgiwm q3t,155jtn/zt) w4.0 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 *eys/;j89q+9vjer ;)q ufopao ruvk- in an electric field of 6000 N/C pointing downward. Whu jepavyo-q+u 9s; 9r8o/;*)r v jkfqeat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chargpv1 5ypj- 3:rrjs2j( jjclce* e 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 direrjv( *jpespj 5cjy jl1r- 23:cction of the electric field?

  A metal sphere of radius 10 cm carrie gwa d64peoqdcl444 nr43o b /dnyk25us a charge of +2.0 mC. What is the magnitude of the electg4 y3lq6pddeo 4 or/anwdu4 kbn 2544cric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mClgo4; e*cnu(- svy. jrb;hln/. What is the electric field 6.0 4lshybj n olr(n;;uvce- ./ *gcm from the center of the sphere?