State the law of conservation of c q3xvakj.3:relectric charge.

  Is it possible for two negative charges to attract each qtmx+q5g.t4y)l g :cw 0bulu.other?

  Is it possible for a positive and a negative charge to aft1)ncjpwr*sz1xu-7r62 9 yj7ppe zs ttract each other?

  A glass rod is rubbed with a piece of sil vvpwtk-f+kocb;/ 7+xbi s56bk. During the process the glass rod acquires a positive charge and t+/6x7v o -v5fkwb ctbpib+ sk;he silk

  A proton carries a

  The model of the atom shows;pzt,.5 x7s.swsmch s a

  A neutral atom always +2x l6y7dvrt.oor8mydm 6bu ; has

  An atom has more electrons than proto99 *,c by fsgy2ie2bsblw3l7cns. The atom is

  Materials in which the e on1qrc7lx/g 8d9fo2:v:clb1 mo1c xe lectrons are bound very tightly to the nuclei are referred ox/qml l1f1:: bdcco 27gco1x 9 vne8rto as

  Materials in which the electrons are bound very loosely to the nucl:d)v.d+g *(f wihlro cei and can move about freely withi l(*ivd+d.woc gf:)rhn the material are referred to as

  A negatively charged rod is brought near one end of an unchauz9wt g5d/ 2wsrged metal bar. The end of the metal bar farthest from twtg2u5z/w 9sdhe charged rod will be charged

  Sphere A carries a net positive charge, and spheryxaqp 2es 00b+agf*9ee B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched w29sye0b ag*fpqa 0 e+xith a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivnc4jl +m9w1d vely?

  An originally neutral electroscope is briefly toucr;k7tm5 (iwedb b8 7xvhed with a positively charged glass rod. The electbk8imb7 (tr;vx5 ed7wroscope

  An originally neutral electroscope is grounded briefl0te; edg5uxum/u:5wdp1x) l oy while a positively charged glass rod is held near i5xx1wgp:u)/5l e d0muodute ;t. After the glass rod is removed, the electroscope

  A positive object touches 9p2y+ y rqsp-cp z)1n* nw*r/a.h biuka neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Whpp yu wp n.q19k)s*hbc z*2n+r ar-/iyat happens to the leaves?

  A large negatively charged object is placed on an insulated table. ;f,c1djhtdd /w +q0ze 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. Wddd,jt;zq f+h cw0e1/ hat is the final charge on each ball?

  Charge is

  What are the units of the Coulomb 5:+u x2 eae.mq n//.:hcyazeuf aen8 kconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charg14p2rcqk5d zqxz gas91d(jni6 1 1 mike is larger in magncps j1aniq9z1 md ikgqr65(1kz dx214itude than the second charge.

  Sphere A carries a net charge and sphere B is n1)ya vui 2t0moeutral. They are placed near each other on an iuai2o1ty0 )mvnsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each otf ir: gy30-ehwwdl5:vher with a certain force. If the charges on both objects are doubled with nwgv:3h lfd-ri0 :5weyo change in separation, the force between them

  Two charges are separated by a distance d and exert mutual atti /d9dy(-vuviractive forces of i d-9vvyd/u(i F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eachctl4s1rv/,r*zo *l ic other with a force F. What happens to the force betweezr,1*svc o i*l/clt4r n 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 now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happ3pq; x,3 sgxklhi. /qhens to the magnitude of the force on the proton if a second electron is placed next to the , 3xi/;k3s lqxghhp.qfirst electron?

  An electron and a proton are separated by a distance of 1.0 m. What ha3*ke p4(zfxhwq/x*,p j8 dk qkppens to the magnitude of the force on the first electron if a second elqdp3k(*k4x*8 ,qjhfxkp z w/eectron is placed next to the proton?

  An electron and a proton are separated by a diximx 3-x ta5i njp1z16stance of 1.0 m. What happens to the size of the force on the proton if the electron isip1x15nxt 6j- m i3xaz moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a seconddyc*6vb3w ag.kze a /6 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 placeda ydew6 c. azgbv6/*3k 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 centroid of an elglsi2b7c c9ay (-,t uquilateral 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 o2clb s-(ga7l9 ,iu ctyn the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vectlc/7 hcxxcw q5m80izw;d 7 u+vor?

  At twice the distance from a point charge, the strength of the electric fie .ful5gnrn9m/4w 0l bmld

  Is it possible to have a zero electric field valuq ks/mn+ 5a+ k*x7xppfe between a negative and positive charge along the line joining the x 5+x7kfn*pa/+pk q smtwo charges?

  Is it possible to have a zero electricx-ray v/.x. lt field value between two positive charges along the line joining th.vxat-./ rlxye two charges?

  Electric field lines near psitive pointdh l3nth6un* pg t*x9vs,3. zw charges

  The electric field shozacf35u4de* ln vh19f wn

  Can electric field lines intersect inzad +j. 26pzzk free space?

  A solid block of metal in98p m 66 x8bn xchjq0+39 iqawod:vint electrostatic equilibrium is placed in a uniform electric field. Give a statemenn0 63amboidn9w xc8 ih 8 9j6+:qtxpvqt concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphg 1x2f9 sqd.ot5o91jisztw0o ere of equal diameters are each given the same charge, t o.tq5o 290z9iwxd1 s joftgs1he electric field (E) midway between the center and the surface is

  A cubic block of aluminum ree x x,s2chl i *hsjj0sqkgi0-y.8o l94sts on a wooden table in a region where a uniform electric field is directe-x qskgy0eo 9 i4 0l2hch8xj.l ,sjs*id straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostaabu ui5e/w821rd nzhgzo- m):+n f/oj tic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow mo4y* mv/ryey b9aj*/oetallic sphere that is grounded. As compared to the case without the hollow sphere, the j4 boory9* *ym a/ey/velectric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibf pwfue(mz ; zrb3;86s(9ax4 fmtacf 1rium.

State Gauss's law.

  The charge carried by ((ikx0k4lphf one 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 +2.00 mC. How many more protons than 2i4h t-w w4 pwqgv;e:gelectrons dovww-4e ;g4g w2iph t:qes this piece of plastic have?

  What is the charge ozykmoi15*u 5 zl5r gf j 249fh*idh-ffn 1 kg of protons?

  An atomic nucleus has a s)27w mnncug,v9tv/ kcharge 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 - bmzo9fx(4 xu+n)q gkjgj,16 fodgn+24.0 mC, respectively. What is the magnitude of the electric force between them?xkb6df41goj(q 9g zx,+j )f n2u+nogm

  A 1.0-C charge is 15 m from a second q6k/v)(xo i dn-5. ls pmp7lqbcharge, and the force between them is 1.0 N. What is the magnitude of the i) 6dl./vm pksql(nb- pq5o7x second charge?

  Two 1.0-C charges have a force 5ki( wtzd;fz8between them of 1.0 N. How far apart are they?

  The force between a pdp78)iyoqj ov;wt19$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience 1g2(auep vz0 da 1.0-N force. If they are moved to a upa d(e0v1zg2 new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are p4(e*uwu/t khg8rgi ;o laced on the x-axis. The first charge is at the origin, the ou ki/(;ggr *e8 twh4usecond 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 acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed l /py4(h c)tolat the origin, -2.0 m C to the right at x = 50 cm, and )yhl l(o4tpc/+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 =pu4yk9pj)ux /,b tu9cp + bh:l 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 m9b )ujb9, 4+uc/:lpu yxkhtppC 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 cente: mqgyx0n,f ,uo ;zmmfe-i 2z6r of a square, and a second point charge of -Q is placed at the upper-left corner. It ism0o,2 q-z;y 6:eu, mg znfixmf 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 3lovud/b:+0 )he5 ka (fa fbldat (0, 0). What is the magnitude of the net force on tf vkl(h ab+f0e old/ad :5)b3uhe 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Qcgl;3m9a*vk(m/ i :t csi c2ua+sd /gj3 = 5.0 nC is at (0, 0). What is the direction of the net force on the ag lv md92:(c3ua//kcc+*j s gtmsii;5.0 nC charge?

  Three identical charges of 3.0 mC are p3 84k o 1k2lsabgyuj;llaced at the 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 o1s ka23 ; guy8llokb4jf the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.c)qs/ l/ 5zlai0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such thlc5i// qlz)a sat the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9bm/ lmy:s0r3 kru5 l.c.0-C charge is at x = 4.0 m. Where on the x-axis can a thc urmy s rl:3/5lk0m.bird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chdrbf,dyps btn3ugxm34+- 9,rarge -q is placed at x = 2a. Where can a third positive chpt bnb,,u3-fydsd3r xg r4+m9arge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g.f0 ylvp *3tds evkg*dg9 .e1:txb7yi7 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 :;mew4j2y:e: v2tyneed,xfa 36qdw m gravity by the attraction of a fixed proton some distance above it. How far aboveam:wen :me2,q:yvt 2e6wxjfyd3e 4d; the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pointt9twjtcso +8pf p 1i74g enq54 by nonconducting threads which are 30 cm long. Both are given idenjq4t7i+1 tn ep scw8o95p tfg4tical 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 n/yg5owxg ,;q 6t)a kl5mmo( pa charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucn 6,mgqm;p)( aologw/y5t 5k xleus?

  What are the magnitude and direction of the electric field at * 6ldn5h o:+awgf ,nxaa distance of 1.50 m f*:wo+fnhl,xan a5 6 gdrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is t*rxl a*o:c82pgk .tkt he magnitude of the electric field at the location of t.algp rkc:k *t8o*xt2he test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the e s9dzjll/7 b;wlectl9z/s7w l;b djric field?

  A 5.0-C charge is 10 m)s8h 9f5i1 v2b.lgtpeo, vchi from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at th.il vve9hcih ) ,pgf 1b8o25tse location of the test charge?

  Two point charges each have a value of 3.0 C az7w r/)qwpa,o nd are separated by a distance of 4.,)oprq wa7z /w0 m. 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 meter sti f4jwlc3 y*n klmhe 0o,-w/+pxck and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cmmx0,c +j-lkwhy f* we4pol3 n/ mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a1vz1k,bz(j 6ekd v* p)foc0a w -4.0 mC charge is placed at the 50 cm mark. Akf(k b1ze )dv1*wzp v ,0joc6at what 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 placed at x = 0 and x = 0.20 m. /jc+go1vxcp 4 What is the magnitude of the electric field at the point mid1pcxjoc4 g/ v+way between them?

  Three 3.0 mC charges are at the three eo yujzj(v -ae7-h83xs*2 gyucorners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.2vx hjus(-z8 eoj* y3a-eyu7g

  Consider a square which is 1.0 m on a side. Charges are plac gskv3cj6sz qyu g)5ooy-3+4fed 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 electric field at the o+yks 5-s oc g)4g3j 6yfqu3vzsquare's center?

  A force of 10 N acts on a chama q5txh b.2ycbff51aa ;6w- irge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude o21 -a5w 5afmbhtfx c ;qyba6.if this electric field?

  A particle with a charge of 4.0 mC has a -8zoh0 gbuo9j 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 electric field of yz3cuzx5 0bo7xvdw3)jy3w h8w+ u 8s/ k whu-e6000 N/C pointing downward. What charge must be placed on the ball for it to b8sezu/k xvh+3yuc33)-d wouywj xz7w b58wh 0e suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The zv x:f9udacpc/;vpya33(:e skc- u2c ball is placed inside a uniform electric field, anda 23::c3ycdacscp-p ; v(veuuxz/f9 k is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radncqb,1k rpq:dj,rwv3 +ne+8vo dm, h +ius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electr,dn+ev1 8rq+vcn, k3jwh:qdbprm, +o ic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries f1m-i2ll mgus on2/c8a charge of 3.0 mC. What is the electric fief/2-nlg8cousm m12l ild 6.0 cm from the center of the sphere?