State the law of conservation of electric cha6ms 6yu8 m:dofrge.

  Is it possible for two neg3 66k 6crwyfiyative charges to attract each other?

  Is it possible for a po7twf efcd6s 1c zl/;e.sitive and a negative charge to attract each other?

  A glass rod is rubbed with a pie5q7/ n g1yodg x4/7vxl e f(ke5ucy.w:uxp:igce of silk. During the process the glass rod acquires a positive charq:u yypd cf57 :1xxn ee54i lx(ugo gw.gk/7v/ge and the silk

  A proton carries a

  The model of the atom) j: fzpb4g*fpv28qls shows a

  A neutral atom always k)ab -av*qi)r3djri ..4pymqa-t /vu has

  An atom has more electro(fu;8mi7zk ,zhd 0oh wns than protons. The atom is

  Materials in which the electrong z0u8 3opuq82 o(*ogobip7dz,iun4 es are bound very tightly to the nuclei are referred to as n8i*2ouz4 pg3o8qpubgu0zi7,oed o(

  Materials in which the electrons are bound very loosezd313mn/md.d(kna ,w/bda snly to the nuclei and can move about freely within the matern/b d a3 sd1 (,n/kdn.amzmw3dial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Ti8 ;0(lkmh0o irx2teuhe end of the meta(k; i8rx02 liu 0omtehl bar farthest from the charged rod will be charged

  Sphere A carries a net 9fdmj0zk d-k0 olslt )zrs7 /(positive charge, and sphere B is neutral. They are placed near each other o-)lsd 70/9dks ltkzrmo0j(fzn 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 el6x,x :igmmlt 7ectroscope positively?

  An originally neutral elep ap5e nf.c0s:ctroscope is briefly touched with a positively charged glass rod. The ele:np pcs.ef05 actroscope

  An originally neutral elemt0zj;gvv;kpn pd9im:w31 r il8w:) uctroscope is grounded briefly while a positively charged glass rod is held near it. After 0 )z vrwi;1i k8 twumgj:p3nd;:mv lp9the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope- l3 m)nl uoz32zxh)uv, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What ha)hzl3-3 vul 2xnuo)mzppens to the leaves?

  A large negatively charged object is placed on w ) fv2jx(idjkvnnx 8(2n 3v)dan 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 ronjnk)x3f2wj xv 8d v )(vi2(dnlls 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?

  Charge is

  What are the units of the Coulombkh 2 c7w,ztfg)x o, 7nuiwhb;7 constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger qhd,l(y-tj*we- /dnwin magnitude than the second charg-h*lenw- td(d / wj,qye.

  Sphere A carries a net charge and sphere c atrg 0ojym.o asf 3 l79uhf5)b:yy13B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force jo a3aysh m50f. 937y uyftlbgc)o1:rbetween them?

  Two charged objects attract each other with a certainq,q/f anpnncj ) :3g- vmdc4:n force. If the charges on both objects are doubled with n:-3/q4nj fpn:va nm)g ,dc qcno change in separation, the force between them

  Two charges are separated by a distance d arr7m5mvk:w ,o o( ,5eu.lcf csnd exert mutual attractive forces of F on each other. If the charges are separated fcs o. m:5uekor(m7cvwl,r,5 by a distance of d/3, what are the new mutual forces?

  Two charged objects attrac)tb3o*9 1kscfpi ppd,igd;yk876 nt at each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, d1 p 8np9k;fipt7k,itb*dsa)y o6c3g 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. Whak;j fpm3kau x bap+180l/w 1cnt happens to the magnitude of the force on the proton if a second electron is pla1pfbwaj+03xca1m8/;un kk plced next to the first electron?

  An electron and a pr t3iht1ult 1l4z8h vuyl3q4c trp/ )z4oton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is plic41z3thl8 h44 pttul zqru v3l/1ty) aced next to the proton?

  An electron and a proton azxqlo- dg dpe2t7g7rl)1cfgu4 , -d*ire separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.5dr*,g 1 giqtdcfx4p odule-zl)2g7 7-0 m closer to the proton?

  A point charge of +Q is plg k:yms)6cv3 c4qko 6qaced at the 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 electrostatic force acting on the positive charge at the center of th4)qs:c m gqck6 k36oyve square?

  A point charge of +Q is placed at the centroid of sg2sl ,wxd*kan36-qn an equilateral triangle. When a second charge of +Q is placed at one of an-nq2d xs*gws,3k 6l 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 not:phxg -dlfz l/*pi0a : a vector?

  At twice the distance from a point i( aqw/ k4.rsb(.8cb hhdw0hx charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negativeli 2p-y9l xea, and positip2yle-x ,l a9ive charge along the line joining the two charges?

  Is it possible to have a zero electric field value between tm.vqz +7c 10iw*up*db8cqx a pwo positive charges along the line joining the two chau a1q*dxpvi z*b0. cc8m pq7+wrges?

  Electric field lines / hzax/tzm(jjc+h , 9mnear psitive point charges

  The electric field sh)n 7*:5 mhecep ai jk7kzzc)w1own

  Can electric field lines ini,lzzd /dke2v 6l ))rctersect in free space?

  A solid block of metal in electrostatic e0rbwku/kh4m7* s(g7-3t yhb r lre)ie quilibrium is placed in a uniform electric field. Give a statemen e4 )hr*7u3i(-h rterbbgylmkwks 70/t concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diasdfo xb0n ayp(xxau/ /3h) ;in /r;in6meters are each given the same charge, the electric field (E) midway between the(n xf/;xu3)0np/;sh adoiy6 /airxnb center and the surface is

  A cubic block of aluminum rests on a wooden table in i5pp k x2wp65aa region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's x6pkwpp 5a5 i2top surface?

  If a conductor is in electrostatic equilibriu-uv:z7 ffw k-iz p6(pnm near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grounfz3-f)4/mt yjx c xv*uded. A/x zx uff)mvt y*c-j34s compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium4 hlz2; 5jba3)mfumeh.

State Gauss's law.

  The charge carried by one electron is.c6ridt ;z/zx $e = -1.6 \times 10^{-19} \; C$. 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 thyu;ko/qc7*c aan electrons does this piece of plastic/cu7qkc; a yo* have?

  What is the charge on 1 kg z-ntvhr(6eb e:bh i xp5qt9 n40vat7+of protons?

  An atomic nucleus has a charges-h9wfy,;c/rezc f;1bz)z,wf u q va* 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 of4 3lt2q7r cy4tchu6q f 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between them?y7 u42rhcl4 qc3tf tq6

  A 1.0-C charge is 15 m from a second charge, andvev*1fec qv 33 the force between them is 1.0 N. What is the magnitude of the see v3cfv*3q1vecond charge?

  Two 1.0-C charges have a force between them of 1.0 Nnkh mjn om,k3tcw())v2 gnp0). How far apart are they?

  The force between a , ezv fweo/o9($30 \; mC$ 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 x j/1oy.haqj2fs ,9mo force. If they are moved to a new separation of 8.0 cm, what is the electric force between 2 jmfha/y o,qoj91.xsthem?

  Three identical point cn wzj 4pyn:7j;harges of 2.0 mC are placed on the x-axis. The first charge;n:pyn 4z wj7j 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 electrostatic force which acts on the charge at the origin?

  Three point charges a 3rys h1;b -1oybujrk8re placed on the 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 magnitude and direction of the electrostatic force which acts on the 3y; bhr by1kuso8j1- rcharge at the origin?

  Three point charges are located at the following 4):a qtk q95tpkltn-epositions: 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. What is the magnitude of t5eal kqnqp- 94k tt)t:he force on the 3.00-mC charge?

  A point charge of +Q is placv+ht1xuedl5y s - c2agiusu,x;3 +ja y):y;rped at the center 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 acts on the center charge if a third charge of -Q is placed at the lower-left chpsj axel-u, i3usrc+yt y 1dua;;+)52y gx:vorner?

  Q1 = 6.0 nC is at (0.60) qo+dppiult ov2 ;q30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0)iu;q ptvl6qod0p+ 2)o. 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); Q3 = 5.0 nunai v8v1zb,u. 2y1qa C is at (0, 0). What is the direction of the net force on the 5.0 nC chz. b2uvqya1 ui18a, nvarge?

  Three identical charges of 3.0 mC are plat: umb-xctg16 ced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic forctut:x b6g1-cm e which acts on any one of the charges?

  Consider point charges of +Q a0j;j g t/8ptolnd +4Q, which are separated by 3.0 m. At what point, on a line between the two charges,tgt0o p;8jlj/ 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 the oriv4 dcny v7sel, (fw53bgin and a +9.0-C charge is at x = 4.0 m. Where on the xly 5,c4d7sbe3(w nvv f-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 placed at x =o:i:b. rqwp gu 0r9xq: 2a. Where can a third positive charge +q be placed so that:upr:ir.q o xg0:q9b w the force on it is zero?

  A copper penny has a mass of 3.0+-ok x mbq8/)jct1i/;j lxrz l 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 zk u4d7ni hn* 3vg1)dciu/6 mjforce of gravity by the attraction of a fixed proton some distance above itdhgi)*k n j4vdm7cu3/uiz1n6. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thrmt927qbxav) sn qv;n7eads which are 30 cm long. Both are given id77qnq;ta9mbnxvv)2 s entical 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 charge of +40e. aijy (s6 5)v4ccf a7r skx*dq0 What is the magnitude of the electric field at a distance j(x*d76)k0cqa c5y4vaifsrsof 1.0 m from the nucleus?

  What are the magnitude a dnj-dyl3ovwm4 6 ml)8nd direction of the electric field at a distance of 1.50 m from a 50.0-nl d-m8vwn36 ydj4o lm)C charge?

  A 5.0-C charge is 10 m from a small te. ;i(/njbz *kw+w).f7xie zdt9 ltwakst charge. What is the magnitude of the electric field at the loc lzb. z9fjd7/ni* etw;(ktwkw)i+x .a ation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. jr:td;rxwrwy/o93q948f c y rWhat is the direction of the electric fyr qr98 ;/wr9xc dowt4 yrfj:3ield?

  A 5.0-C charge is 10 m from a small test charge.otv85 nkcrqb+fb :*n4 What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the tv5onn t 8qcb b:f+r4k*est charge?

  Two point charges each have a value of 3.0 C and are sepxyopk ,;g s8h u9mu 4 419obsbl2fj(bparated by a distance of 4.0 m. What is the electric field at a poib99oy bsb4sjh(uok lx4gup; 8 pf2,1m nt midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of jp/ ko;aw 9e2sj5wz 3unbkl*,a meter stick and a -4.0 mC charge is plsbojkw p z2u,5/ jklena*;39w aced at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is ppj7a 0znkx4 6hlaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what poin0 ax74jhpz kn6t 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 c 8gch3rrdlt5n3nc3, and x = 0.20 m. What is the magnitude of the electric fi3338rncd t lhgc5,c rneld at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Tgh p 3u-: k0zh2f8 bk50nxm m9bxjhay*he last corner is occupied by a -3.0 mC charge. Find the electric fibhujf 9-h 0zah3mx*mk b5 kn:x2gyp 80eld at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the cor.6d vardfg vpx2 6p,6eners 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 i.pp,d 626 vrxfagvde6s the magnitude 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 placedz:a 9o7 (mgqlgeujv4fz.o( )t in a uniform electric field. What iml vt 7(9 :oq ug.a)z(efjgo4zs the magnitude of this electric field?

  A particle with a charge of 4.0 mC has s1- szum/spz(n5lqt ;eg,i6 i 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 electric field zp74ojif:o f* wi66 k*izb r1dof 6000 N/C pointing downward. What charge must be placed on the ball dj 67irp4zi:*kfbzw fio *61 ofor it to be suspended?

  A foam ball of mass 0.150 g carries a charoe5 gbfv)-v bgd9; 1mqge 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 the vqgeof;gbv )b9 5dm1- electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 fs-w:py4r(8sn7w uyzmC. What is the magnitude of the ep8zn:w w4 ys7sf-r uy(lectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is9+ ga+isandcu 5irn +( the electric field 6.0 cm from the center of then+dcs+i9(i5 rug an a+ sphere?