State the law of conservation of a580wnvkvr z m,:i.-l5hjg h(e 4kl fwelectric charge.

  Is it possible for two negative chargej*skzf ki2lfd, ) l0p:c7ts: gs to attract each other?

  Is it possible for a positive and a negative charge to attract each otdn b6+cpwq 6,wher?

  A glass rod is rubbed with a lj ntx-36rqr (piece of silk. During the process the glass rod acquires 3tr6jrx-n(ql a positive charge and the silk

  A proton carries a

  The model of the atomn1/ hmq3 uvb9b,5 dwp ii5tpi9hq o0/a shows a

  A neutral atom always h(qx3vh,w6z rd- m3h qm (m2kyjas

  An atom has more electrons than protons. 6mivkh- b)lipk( oz8 / The atom is

  Materials in which the electrons are bound very tightly to thjfzlg.-r);6yiei t4xqt4y 1*ah a +tee nuclei are referreq yy)z1ef-t; tli ga . xit+4re6h4ja*d to as

  Materials in which the electrons are bound ,g-jn:fs jvi/very loosely to the nuclei and can move about freely within the gjnj/ ,ivf-:smaterial are referred to as

  A negatively charged rod is bcva+v: )d,v; tbm,yaa rought near one end of an uncharged metal bar. The end of the metal bar; ,t+ :vaac,b)ayvvmd farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. T0nkq, xly vn3 cl.9jdnm+/ ha(hey are placed near each other on an insulated table. ad v+nc./m3y nkl9 0,jl x(qnhSphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge qks:u;rpsbnt i;k2sa u s.+ /9 o0*q5pgcdkq/an electroscope positively?

  An originally neutral electroscope mh1(hyu+1lpu1 oo,a h0gl3 )giarmi;is briefly touched with a positively charged glass rod. The electros) oupm3hi1hlra1 mha+1u ;io,(0gy lgcope

  An originally neutral electroscope is bos 39cwwbh --grounded briefly while a positively charged glass rod is held near it. After the glass-wh so-wb39bc rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves gsu98 7/b 3kw )euxdu sp9/7g asfdxnd(l9rc, separate. Then a negative object is brought new/lx n ed asg 9uu877ssu(,pr9 g3f/x k9)cddbar the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on aq;f43 re9x)hsyf)j4zz w*;1utdze e kn 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 charge on each ball?;e)1f;s4dfxq)erk9z*4z hz3 te w jyu

  Charge is

  What are the units of the Coulomb zt-klyc f-1*econstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is x3 wpals .xpj/dl:u89larger in magnitude than the second charg /j ux.lwpsx8a3pdl9: e.

  Sphere A carries a net charge and sphere gc4 d ,u5kd /d;wnv3 1o4hmxudB is neutral. They are placed near eac4dw d5 ou kc hg4dmud;3v1x,n/h other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each otherybz9)iyms ujm1)jdqg y03e+1 with a certain force. If the charges on both objects are doubled with no change in separation, the forc uijmym9ybgzs)+ y )31eq 10dje between them

  Two charges are separated by a distance d and exert mutual attracsa6scg5 gl;7h) 9 wd6q l,fm:y 2vfhwctive forces of F on each other. If the chary: sf7lg5aw c6)qmgd2f wvs ,l ;9c6hhges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eachw86/x-h,nnaa 8kujve other with a force F. What happens to the force between them if one charge is doubled, the other cha, u6eka8nj8hnw/v-xarge 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 distance of 1.0 m. What hadxec*;p) ivnt :.-vt n a(il5zppens to the magnitude of the force on the proton if a second electron is placed next to i) plv*5e; d -vt.iazctn: nx(the first electron?

  An electron and a proton are separated by a dista (xygz ;sg8d)rnce of 1.0 m. What happens to the magnitude of the force on th (8z gy)dgsx;re first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 18 k0ety.*g xmxoc-p t,.0 m. What happens to the size o xeoyc8* .tt- mgpk,x0f the force 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 -k2.rops 81hg-muu-*u bmjzy a square. When a second point charge of -Q is placed at one of the square's corners, it is obsespbu-8-zk1.-gom ym u* h2urjrved 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 square?

  A point charge of +Q is placed at the 3xtzom5h (1k xcentroid of an equilateral triangle. When a se5(xozht 3 k1mxcond 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 one of the other vertices?

  Which of the following is n myjs2d),/(dypa fg ,uot a vector?

  At twice the distance from a point charge, the strwaws(8 lrjs.a*,u0bg* b-,lkpzvo*iength of the electric field

  Is it possible to have a zero electric field value between a negative and positixx5mua(to;1 k ve charge along the lixkm1u;o(5 a txne joining the two charges?

  Is it possible to have a zero electric fi,qrw) se8 00rxywrbc *nxdr :(eld value between two positive charges along the line joining the two charx(e) rn0srxw: d*0c8yrr,bw qges?

  Electric field lines neu 18y2uduc9muen(ou1 zoi)s ;ar psitive point charges

  The electric field shown snz.fo si84cp(.t,f p

  Can electric field lines itu z( 6ckbw.4entersect in free space?

  A solid block of metal in electrostatic equilibrium is pl*jngp : gu9x4iaced in a uniform electric field. Give a statement concerning i4g :j9pn*gux the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of 5fa ez182e adtequal diameters are each given the same charge, the electric field (E) m2z5aefa8 d e1tidway between the center and the surface is

  A cubic block of aluminum rests on a wooden 7 -fyo)ds+1tfkuedj u ) i tt)r;z-r,rtable in a region where a uniform electric field is directed strai )j 7)1kft+ srfryui d--t;,odzuert)ght upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electr:8f j1k:v 7see.yic-t ,ngq hgostatic equilibrium near an electric charge

  A positive point charge isx*wyc,imgtz dyb l6t.4( ya )4 enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field aa x . )dw*ty6yibgy4m ,t(zl4ct a point directly above the hollow sphere has

State three properties of conductors vbzew9mp*jwn;m y8e,i7k2n3 o3 vvc . in static equilibrium.

State Gauss's law.

  The charge carried by one electevkbkwu/6v* oj:j *7tron 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. How many more protons than e 64mxp czs(3valectrons does this piecp3 v64s(cxza me of plastic have?

  What is the charge on 1cwp30;bp*6cjo m (kji kg of protons?

  An atomic nucleus has a charge.,) ph ww4oflo 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 -40 a2qd q+c*kmupmsn/:.0 mC, respectively. What is the magnitude of the eleccs0mmuq + pd:k 2*/qantric force between them?

  A 1.0-C charge is 15 m from a second charge, a:o )fxv( ml8pp d(y5zvnd the force between them is 1.0 N. What is the magnitude of the sep :zl8x()do 5vp (vmfycond charge?

  Two 1.0-C charges have a fo:l,ujwe: 6qac rce between them of 1.0 N. How far apart are they?

  The force between a sjpjrx* n(9x+ $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm cqj0 p xyj/s tcb):p8 ,v)zg1jjqh2a0 apart, experience a 1.0-N force. If they are 8cqpcg 1ph2 yza)j/)0tjq :bvx s,0jj moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fir6 ezkin,;;y;ag.npixqg y :m9st charge is at the origin, the second to the right at x = 50 cm, and the third is a .nyzg6 p9q;ix,;;kn gya:ei mt 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 ona*dyc* 1+xw: t7aagn n the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right 7gaw*catn+x d*na1 y:at x = 50 cm, 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 positions: Q1 = 2.00 mC at x :gone1 48eaorr zk97sae3lml pt2e x.k6c :x.= 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of th6rkro42kl1 8 o:peg3 7a. ls 9:antezm ec.xxee force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point cha ,c):x :3 *uojkvjxomsrge of -Q is placed at th x*j3moj uvo,::)c sxke 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); Q3 = 5.0 nC is a7 1qgty.06m m6np ubrdt (0, 0). What 601d m6brtg7yq.um pnis 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); Q3 = 5.0 nC is ato(c 3hl.s 4gv;ko 1nsak;av4h.o1nl3go s c(s (0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at d n48; od2zwudthe vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charge; zo8dd4n wd2us?

  Consider point charges of +Q o a.qtf4a.dg ,*ej*lvand +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero lq *..jvfteodag*,a4?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where oybr9 +fb 2+rphn the x-axis can a third charge be placed so the net force on itry+fh 9r2bb+ p is zero?

  Charge +2q is placed at the origin +do:i dhuir( i(t1(ubk4c iynxh 758yand charge -q is placed at x = 2a. Where can a t8iynkx ih+5i( b(d 1: uydci(oh r4u7third positive charge +q be placed so that the force on it is zero?

  A copper penny has a m9g*az qxtlk j9*xd4*kass 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 the a bua x7r/ ,eg(fsi-mfvpm:b8)ttraction of a fixed proton some dista v:b rxfu fis7mm)pa,g(8/e -bnce above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threaumhy ,.z5u6qs4ebl(d :lm4ie ds which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces thi.5u4 :, ubql(m zeyes6lh4dmem 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 magnitude of the electn9vm t;b7 jdpgzf.g3.ric fied.t. fj3vnbzpm9g;7 g ld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distancv+4a 7w8mtryxfan lc ltm*.8)e of 1.50 m f+lya 8c8nlr).7xm4twvatm f* rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What;2h 5pp vakqhtd -u7*j is the magnitude of the electric field at the locatua7 t-vpjh2;dpq5 *khion of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is thm8fel*z*s*nub0z bd, e direction of the electric fielsn* fzez,*bl*u0 dmb8d?

  A 5.0-C charge is 10 m from a small test charge. What is ts:s 9gz gq9 nl/i+epr(he magnitude of the force experienced by a 1.0 nC c9gg:s(r n ipl9/qsz+ eharge placed at the location of the test charge?

  Two point charges each have a value of 3.0)/c*e: ,oel ty/i 9twqg*xw rx C and are separated by a distance of 4.0 m. What is the electric field at a point midway betwe iwo:x/x) q*t cr9t l/ge,ywe*en the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sticc(uesy 1 :(+pgxezuyf(2hr 1 wiiei4)k and a -4.0 mC charge is placed at the 50 cm mark. What is( 21hi zgc(exu (y)i:1yir4p+seeuf w the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stickf r+-s(pbskvs0)28pk xe qj9 h and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the e(p8pskhr ek9vx0sqf j- +b2 s)lectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at xs 20in:n iek 7e,/gsqy = 0 and x = 0.20 m. What is the magnitude of the electric field at thig 0e qn2ki:e7y/sn s,e point midway between them?

  Three 3.0 mC charges are at the three cornex l;;y,p:a 7 fevn1xldrs of a square of side 0.50 m. The lasyd axl 1:7,;plvx ;enft corner is occupied 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 placed at the cornern rr*4lms4e,/ cq+: wxts3 ekvm7ax5is 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 magni 4raxe*vi tsq,5krl s4/m7e3mcwx+:ntude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when 6cxb dk,7zqg)it is placed in a uniform electric field. What is the magnitude of this exb ,k6)gzq 7dclectric field?

  A particle with a charge (o tbp s,t6zq k0(hqy0of 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 anmvfjl((/-udm3 i fkpah,ocbat30 1 4o electric field of 6000 N/C pointing downward. What charge must be placed on th0a tmapmfo/u-f 1j(h( 334ik,olvcd b e ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Th0 8za6 dmzn):r um:haao3a8dne ball is placed inside a uniform electric fiel6)dd:m z uah8an:mn0z 38raa od, 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 +2.0 mC. W 6ha 9;p;qrwq c95xxefhat is the magnitude of the electric field 5.0 cm from the sphere's surfacf;6p hq5w9x qercx9a;e?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the mvvubdr*.2sw-88kqiy gb(ta umf7+5electric field 6.0 cm from t+g8u 5bws7 (2iu*fv rm.a- qvmy8kbdthe center of the sphere?