State the law of conservation of el3cr*wqub.e hwwwb* h(:. qi7jectric charge.

  Is it possible for two negative charges to attract each ot;rl k 9n+bch gshc1o0r6m6f/cher?

  Is it possible for a positive and a negad9x.v ej f rlvq6lp4;+9nq f4dtive charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the us+.v6qkcvba5u3bz ,hu: ;fa;ifg3 x14yhox glass rod acquires a positive charge and the aaug3,uzhcu1f vy:6 3xixksq ; 4;hbobf.+v5 silk

  A proton carries a

  The model of the atom shows a r15vr 4fh t-ogikx6l:83mxcuzj+mu 2

  A neutral atom always ha*qr2(c09n s+cpi kjoas

  An atom has more electrons than ps f8avxxky( s 3 :r;.q,8yds7g9rtpdtrotons. The atom is

  Materials in which the e5hep4wat ,msdlk 5 ;g:wq3,g blectrons are bound very tightly to the nuclei are referredw a:bem,l ks;qtwpg 5d 54,3gh to as

  Materials in which the electrons are bound very loosely t cszwj- 0(zn((sv bv7go the nuclei and can move about f nzvz7g-(s wjc((bs0v reely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Theq2gi .xxm59mb end of mxxib gq2m9.5the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positiva )+bmx)b5cw8 i4gcsqe charge, and sphere B is neutral. They are placed near each other on an insulated tabsc54 8ibgc))xmqba+w le. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positiveu ref.g6t.n;.9 r*u i8tckmri 5yc ,lpg.b1dhly?

  An originally neutral electroscope is briefly touched with a positively charged me8i:/a *hawo 7 s3girglass *hm7agi wao3:e8ris /rod. The electroscope

  An originally neutral electroscope is grounded briefly whilcfy5z +2c7god e a positively charged glass rod is held near it. After the glass rod is removed, the electr f5o+c2 cyzdg7oscope

  A positive object touches a neutral egv jfzz)hvf 0*:jm -q5pgj 34rlectroscope, and the leaves separate. Then a negat5:r)ph-jmf 3f*jvqzvz gjg40 ive object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutralbnr6ylw ;uhs aox gk501h) g0; 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 fy)l1g h b5rhu6a; kwxn0gs;o0inal charge on each ball?

  Charge is

  What are the units of the Coulotx+ 5lw;la dt-mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated byxnh6 fa avj:jn+5 vg.a.yqm/;q dk 6w) a distance d. The first charge is larger in magnitude than the secondqay:mq;ava nvnwj/6gk .5)+.jhx6 df charge.

  Sphere A carries a net charge and sphere B is neutral. They are plnpzkw*og( . *caced near each other on an insulated table. Which statement best describe*gkw.zp(*o ncs the electrostatic force between them?

  Two charged objects attract each other with aqu :wz5tq jr+0(fgr5e)crji( certain force. If the charges on both objects aqt f e:r0 (ri)5qj(+ugzr5 jcwre doubled with no change in separation, the force between them

  Two charges are separated by a distance d 9.83 v g atltc mzx2x14n;svkeand exert mutual attractive forces of F on each other. If the charlcgexv.9sttk4 z;n8m2avx1 3ges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to thrw(us)k*vi q0e force between them if one charge is doubled, qswi*0v u)(krthe 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 distancev yrw.w5.h9-;-cybgr)b. mty 4v acp e of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed4bb-cmv.. whpvr;g5ywc ey-)ary 9t . next to the first electron?

  An electron and a proton are separat0;)i4r-:6) rep/ es pcktz3(mkhz i(jr orghjed by a distance of 1.0 m. What happens to the magnitude of tr;o siprcze ()/tejz 6pr(3m-j k)40g hirh: khe force on the first electron if a second electron is placed next to the proton?

  An electron and a proton arenza*n8 7i5a; ocf .azi )smlw) separated 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 l7wsi*afan ;noaz) 8 m.ci)z5the proton?

  A point charge of +Q is placed at the center of a square. When a seco6myvcf4sth*)1 r2 +qvvp7ks rnd point charge of -Q is placed at one of the square'sssmf1k+rtr62vy) vcp7 *hvq4 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 acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. Whenzq5j2 0o/lv,kh 5bbcpw6mi/ z 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 one of the c,vbl/p0zi/ 5bjh56qzwm k o2other vertices?

  Which of the following a9w :-nclq wgi3cmw+ +is not a vector?

  At twice the distance from a point charge, the strength of the electric(ea28jxg, rsaq.tcg 0s75 r pv field

  Is it possible to have a zero electric field value between a nega-*mw6dno 3 ,9ozw fcjwtive and positive charge along the line joining to*3fd -m69 cwwzwonj,he two charges?

  Is it possible to have a zero electric 58ocrjjh 59kdjwcs50 field value between two positive charges along the line joining tjrwsk8joc9 h j05c5 d5he two charges?

  Electric field lines near psitive poi1ft0oiaprn d1a(n;eor7z* v 8 nt charges

  The electric field shown *f)n 18/jcs(yxb 5 ekiakti.l ir,3 .haqa.vj

  Can electric field lines intersect in free spacba( 7ep7 w26qe w+8v8bixzh fje?

  A solid block of metal in ej6; iy(gn.u tmlectrostatic equilibrium is placed in a uniform electric fie gi.( tnym;uj6ld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphedji 05qxmv rriz.z98 ,re and a hollow metal sphere of equal diameters are each given the same charge, the electric field (.z9vr , r djqix0z5m8iE) midway between the center and the surface is

  A cubic block of aluminum rests os j u5 ,:eur*x8seqxk/n a wooden table in a region where a uniform electric fieldjs8s5rx xqe :ue/*k,u is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charam)+7yhl/ liige

  A positive point charge is enclosed in a hollow m,pk 8tk)yz 2s.dc6lz netallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a z clpnk2d)z6yt8.k,s point directly above the hollow sphere has

State three properties of conductors in static equilibrmm4aq-cp8tiob -h :rh/)9eouk6yr) b ium.

State Gauss's law.

  The charge carried byr4q4ift 7) fdz 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 b*fej3n,m bn rl2d 1-wimo 0c1of +2.00 mC. How many more protons than electrons mml 1*n2 i,1e0 dj c3bf-wobnrdoes this piece of plastic have?

  What is the charge on 1 kg of protonjr 6i.y3g xy)cs?

  An atomic nucleus has a charge of z + 4 vfghmxg6p(+x3vzbgax2v7i.1pr$+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 c4udd6ph,ye r7m, have charge values of 2.0 and -4.0 mC, respectively.ed6h 7y,d 4upr What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a sez s 5-uabs3n qau--x-fcond charge, and the force between them is 1.0 N. nsbuafaxu -q -- z-s35 What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How fakn;yx r)rh,a * 57kqypr apart are they?

  The force between a e)fr:,rc ht )de5b- ynpj -dj5$30 \; mC$ 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 1.5 sbd)8) gti(cbl2 mmh0-N force. If they are moved to a new separation of 8.0b bshm i5)mc lt)dg8(2 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firsu 6pzlp7 hg 1qdaghm.4zq1.o6t charge is at the origin, the second to the right at x = 50 cm, and the thipga 6 d.zq7muoh .6pz1l4 gq1hrd 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-axi /h-2g5f7g yfhqvs7z as. A charge of +2.0 mC is placed at the origin, -2.0 m C to the sfh5qhfg zg y7-/ a2v7right 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 5qog9.x6jd,z0r.ptmf1 h jswthe following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. Whag0sjdf x 65,qzmwhto 1j9r. .pt is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the centxz-xf p -5,0vk wyrpjz1u30 kser of a 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 ac ,pr0 j-x5pk1- f uyzkv03swxzts 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 0avgw.*olo/us e e*+)mses)q nC is at (0, 0). What is the magos+ **l0 veosugmee)/sw).aq nitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.3tx200tj36cx/ nga 6g,ym hdlp0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at0gnmchx2 ayp jx6gt, 36d/0lt (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 4,);il5y,qei nn i duqat the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the elec ;u)dy4l n ,5iq,nieqitrostatic force which acts on any one of the charges?

  Consider point charges olic q) 8+fmex;f +Q and +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 elec8)fc qxi+ml ;etrostatic force acting on it would be zero?

  A +3.0-C charge is at the originiql1g r 5-xm0d and a +9.0-C charge is at x = 4.0 m. Where on the 1qxg0dl r-5im x-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 8 jujta75ohjf p-m-5xplaced at x = 2a. Where can a third positive charge +q -t5 fjhxp-am5ou 7jj8be placed so that the force on it is zero?

  A copper penny has a massscpc9 c )k9-5u(fkym 9wy )aeor3 .dab 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 fosj-3 dt+sst-b 1zo-eorce of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the proto s3s+zo-s obt1-j-d etn?

  Two 0.20-g metal spheres are hung from a common point by non0d2)s. l2b/ soqkdeem dtx.,, pns pl2conducting threads which are 30 cm long. Both are given xs2opl 0.qtnbl 2e/.,ss,)d ddpme2k 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 chargds,kq7 jfxv5)clj1o+ e of +40e. What is the magnitude of the electric field at a distance of 1.0 m fro5j+o,v sdx7 l q1fjkc)m the nucleus?

  What are the magnitude and direction of the ex51/. kn)zp2hnmc d trijni qa.o 8 0oib-+z9olectric field at a distance of 1.50 m f ih25oj9q noi +c0.xdo mz.tp-kiz)n/abnr18 rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude oqdv b+o z,:6g f0iw7rzf the electric field at the locatio b07gq,wvf+: droziz6 n of the test charge?

  A 5.0-C charge is 10 m from 3md fr:t wsx8*a small test charge. What is the direction of the electric fielf x3*mrs:dw8td?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofserp5k a:m)r7liw;5.gp2 rn6 xc9jj f the force experienced by a 1.0 nC charge placed at the lorkrxfmsa;)759gw25l6e.p i :r c njjpcation of the test charge?

  Two point charges each have a value of 3.0 C dx/t2lrpv7g2 /ui ou)and are separated by a distance of 4.0 m. What is uuxpi2/r7/lo t)d2g v 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 stick and a -4.0 mC d kzlb2;*h03llkd v ai733) kkmc st)ucharge is placed at the 50mauh) )ll7k dt;bi3zd3 32klvks*c k0 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at thrvkj j h3)b+l3e 0 cm mark of a meter stick and a -4.0 mC charge is h3bk rlv j+)3jplaced at the 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 mC are placed at x = 0 and x = 0bj,ik( gp,jck /t w)h8.20 m. What is the magnitude of the electric field at the point mid)8 kgp,/ (whbjti jkc,way between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 d*-kpd *w5 t qmit6bg6m. The last corner is *qtgm5dp*kbd i6wt6-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 placev(ok4ml 0w 69+mdxbdsd 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 t4( mosdw kvl9x6 0+mbdhe magnitude of the electric field at the square's center?

  A force of 10 N acts oc-lw*2t43h c6 nvywcpn a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitu ccc6-y3thwpn *l4 wv2de of this electric field?

  A particle with a ch8p jtm3t(5 ijharge of 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 an electrb;y:/azw/ufc ic field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be a /bwuc:;fyz/ suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Tc6 8du6ut - 0yea:vnhshe ball is placed inside a uniform electric field, and is suspended against t:ashd0v6 nyuet u-8c6he force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a e pe;h 9+gw3ytcharge of +2.0 mC. What is the magnitude of the egh+ ;93tewpy electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.c0hf:x/ 4htulqyn08)yeug9 w 0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cl enhy:y)4fhgx qt8/c0 wu 0u9m from the center of the sphere?