State the law of conservation of c*ddy tl9:sq5t*d1u selectric charge.

  Is it possible for t1no (8i)dfpn 6k8y 2phm/a oglwo negative charges to attract each other?

  Is it possible for a positive and a negative chake(3rrpzi s cq,3/c4 nzu4x8drge to attract each other?

  A glass rod is rubbed with a piece of silk. - gz)zljdc04oroxp* erw7m (+1t*r bz During the process the glass rod acquires a positive charge and the r-d w pc4r*)bez7o0*lxzo +1 (mjztgr silk

  A proton carries a

  The model of the atom shp m6yuwwd-j1 31f0./2 r )cq krbltjcxows a

  A neutral atom always 8 lf+um+e zz9thas

  An atom has more electrons than protons. mw:d lj9d(o(cThe atom is

  Materials in which the electrons are bound very tightly tc,vqpr x4 -*ypx*bu -uo the nuclei are referred to apv--b, x4*r*uc pyquxs

  Materials in which the electronw0q 9-u dyr; qv4)d oxegyz)k5s are bound very loosely to the nuclei and can move aborxdw;z5k9o y-0dgy ) q uq)4veut freely within the material are referred to as

  A negatively charged 5t:zyyl:*h boh .dq0: jqg9rzrod is brought near one end of an uncharged metal bar. The end of t dhzq g 0lq:r5j*:9b y.:htzoyhe metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B isz1ffni 2 +:bvh neutral. They are placed near each other on an insulated table. Sphere B i:i2hf bv +znf1s briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posiy z fmk+ifkp8o)t. 3o-tively?

  An originally neutral electroscope is briefly touched with a positivel 8bs0 tp6*itr;+ji duqy charged gl8rtt+ij i60 ub;*qspdass rod. The electroscope

  An originally neutral electroscope is groundedz58 zn ykj:..1ui u3zfw,llxs briefly while a positively charged glass rod is held near it. After the glass rodu z z, w.81ln5xjil3:fk.sy zu is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separ /a204b ci md+v3ixrqvate. Then a negative object is brought near the electroscope, but does not touch it. What happens rdq 4a3vb2 ixvi/cm +0to the leaves?

  A large negatively charged objeu796:n(gfbazw)hoekci x /q+ ct 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 6u haic9b f( )o/7ekq :+nzxwgball 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?

  Charge is

  What are the units of the +-ld n eizuu(8ex.8prz) lnm( Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firsnr yw1 utg/cz )34qkgb;h .,hgt charge is larger in magnitude than the second cr)nbu z;/gwc hy.3,htq g4k g1harge.

  Sphere A carries a net char sxn6h-8+ rjxrge and sphere B is neutral. They are placed near each other on an xn6sr -xj8hr+insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other6w ed hm1wlfm; o2otm,hvb5l ,lm6n;) with a certain force. If the charges on both oeo,lwf vm1n m5m6d6b2;; ht,)mlh lowbjects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual atte sfh 9o,/gojgvkem/h. m .pj)287ju practive forces of F on each other. If the charges ar.phj)ugem/ejv8/p7j9 mo2g h.k so f, e separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each o ,p qj64tp(a*nndv u3ether with a force F. What happens to the force between them if one charge is doubled, the othetn43udq 6e,( pvnj*ap r 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 1.0w1 qq9s4ih3q( p/nfjf m. What happens to the magnitude of the force on thesj/94 q3 (f1qpnhwfqi proton if a second electron is placed next to the first electron?

  An electron and a proton are s-:ksxdhlj.piy4 79 f reparated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electi xh-:plj79f. ky dr4sron is placed next to the proton?

  An electron and a proton are separated by a distance of 1uvhcp d4pc0q/ i*m l/re seq w5/+lr48.0 m. What happens to the size of the force on the protonqq ucs/ h/ wve8pdpl+ 0eiclr/4m4r*5 if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at thefiku94-b/cfb4pcjs /p)cq (y p)cja) center of a square. When a second point charge of -Q is placed at one of the squapqp)c y-u(kb// 94pjac) bs)cfijc 4f re'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 the square?

  A point charge of +Q is placed at the centroid of an equilater7)2qv 59daajmmxewf:l:/z4q c o9 sn pal triangle. When a second charge of +Q is placed at one of the triaz/s)j lc2eqmxqavp5 w:49: n79 oamd fngle'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 a ve6trmfr1. hi0 n+io+yq ctor?

  At twice the distance from a point charge, the strength of the electric fielri6ef 9om,a d (broc*(c dxzkq 8:kai9jn0e)*d

  Is it possible to have aq 2jq;*y59y o93n; b2avv ( pzeqqtpli zero electric field value between a negative and positive charge along the line jo*v qqtl2v ;2953ay(p;bojnqye9i p z qining the two charges?

  Is it possible to have a zero eleembey2 k*,0jw ctric field value between two positive charges along the line j 0ybkw,m2e*jeoining the two charges?

  Electric field lines near psitivj9*f(ma q d5pve point charges

  The electric field showko ni:wt)0g,iv1p b q2ph4ta 7n

  Can electric field lines intersect in free spaqjy 7lti)(f.rf bid -1+yqhc,ce?

  A solid block of metal in electro4 .+ot5du csrustatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interiordtcsor +4u 5.u.

  If a solid metal sphere and a hollow metal sphere of equal diameter -fe4p3qm: y dmrhxj* iln,b2oh74e 8zs are each given the same charge, the electric field (E) midway between the cent :4*jeq 4dhr ihx7mzol np-2fm83by,eer and the surface is

  A cubic block of aluminum rests on a wooden table ina:1nu .p h4pu el:*bf8ja fof* a region where a uniform electric field is directed straight upward. What can be said concerning the charge on th* *8nfuajlpefhf: u. o4a1b:pe block's top surface?

  If a conductor is in electrost-ayxjbwhu:;/g;gt e x8/ s+static equilibrium near an electric charge

  A positive point charl0w 73 r5icbprro ;/woge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the e w5rrc bwo3;lpi0/o7rlectric field at a point directly above the hollow sphere has

State three properties of conductors ) 6mvvc4 ebc k7cv4+bain static equilibrium.

State Gauss's law.

  The charge carried by one electrlf42aw- q 0ednon 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. t a-o7(at6 ;nwlxgw-+ dvvib/ How many more protons than electr/oxva 6l-vatibgd(-w 7 ;+wntons does this piece of plastic have?

  What is the charge on 1 kg ofmq78o ) idz1c;p6tr u:)cywcz protons?

  An atomic nucleus hash-gb,q b vs4h( a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separad3d k)u m.v ;mw 2oqr;j xmx/dpt(f+d:ted by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnit dr;d.u:xmov) +wf tkm3pmq2xj/dd ;(ude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between th-e +t* qqdx3seem is 1.0 N. What is the magnitude of the secondsd3tqee- xq+* charge?

  Two 1.0-C charges have a force between them of 1.0 N) m-ok8o0 1k ha9zya4voh,1bsgk3u:j rwbj( u. How far apart are they?

  The force between a fdbd 4i6a6b:l. wt) qe$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiam 9 w3a )4hzq k+c-l8b vl jj8+pby+xoo;qv0unlly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 c0kp-4z8qaj+b x)wjhl +uv 93+monc ;b8qly ovm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on(mliv i- sax,1 the x-axis. The first charge is at the imils1a,x(v- 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 are placed on the x-axis. A charge of +2.0 mi k 503hgara8hl(ik-wC 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 a 5i0g-h lk(ahi3rkw8are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are locz;;;y)bnxi1u5sr 7wjgo r/f yated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.005yu ;rors ;nw1x/gjybf )iz;7 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 a square, and a second point (voi9sj/xlx+ z x 0ay/charge of -Q is placed at the upper-left corner. It is observed that an electroav+ l/zxsix y9x/j0o( static 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 3wx,fsa1vm m= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on t3fmxv1a1ws m, he 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 w: r f0vjmjj7 za1)5ium); Q3 = 5.0 nC is at (0, 5 jjij )u1avm 7frwz:00). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertizlva p6( v x,q8n-pdcrq31 -kkj+;sui ces of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electro;ljx qv(k8- 6s1q+rzci-adp3,pn uk vstatic force which acts on any one of the charges?

  Consider point charges of +hyuq56aahwm4a /. u1zQ and +4Q, which are separated by 3.0 m. At what point, on hm aza5w4uy .q16ha /ua 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?

  A +3.0-C charge is at the origin and a +9lj y8(spjk0bv n7r6 5jos93jl.0-C charge is at x = 4.0 m. Where on the x-axis can a th8kr6jjonb39j7v0syp l5 (jl s ird charge be placed so the net force on it is zero?

  Charge +2q is placed at the or/b vl8os:1yf wsn en6c0;np :aigin and charge -q is placed at x = 2a. Where can a third v8wea/lfsn:0 1: y bponcn ;s6positive charge +q be placed so that the force on it is zero?

  A copper penny has a m(j9 sja 308upzmh0 jjgass 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 t a+suh/e :m*7lly5hnxo 6g 2iup against the force of gravity by the attraction of a fixed proton some distance above it. How far above the elect+xego6in *hm:2h u5als7y /ltron is the proton?

  Two 0.20-g metal spheres are hung from a commo rmy39e4mxd. wwrh5c4 n point by nonconducting threads which are 30 cm long. Both are given identical charges, and the ew.4eh dr r5mcmx4y3w9lectrostatic 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. What is the magnitude of the eleqzo;) - 2q1*iszulvjbctric field at a distan*u)zq1 zs-vb;lji o2q ce of 1.0 m from the nucleus?

  What are the magnitude and direction owao4u;dat -;df the electric field at a distance of 1.50 m from a 50.0-w4o a u;t-ad;dnC charge?

  A 5.0-C charge is 10 m from a small test charge. What isv kbqx,,p/t54 wz2/)rjy2lodetcf:v the magnitude of the electri42 /owkd )v :pft/r 5j, xebcly,v2tqzc field at the location of the test charge?

  A 5.0-C charge is 10 m fr(l-,vs ewtod .y d5;reom a small test charge. What is the direction of the electric fi d-d5;o,e(sltyw.ev reld?

  A 5.0-C charge is 10 m from6 mnmua;m5 3lu;bz qf; a small test charge. What is the magnitude of the force experienced by a 1.0 nC 3unml;m ;65 zmbuf;q acharge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dis xi/7t( z ;sg6fv6rjov7h fqh e*cooj p25.ir-tance of 4.0 m. What is the electric fitjovs fr;hqi -7zrv.7 /5e*co2o jx(6ifp6hgeld 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 -yvhnjl. ,+lhj 1j02 tz /mtwscharge is placed at the 50 cm mark. What is the electric field at the 30 cm marsjj,hv./0-h wl mz 2 yt+1jltnk?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.)3 yo9j )sx*aul:womq0 mC charge is placed at the 50 cm mark. At what point on a line joining the two cha3 sa:oju *)xwq9)mloy rges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0kr2rr cuhb:. j3;vq:t.20 m. What is the magnitude of the elect jc3.r:tu2;hb vkr: rqric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.5hys( z8p s0x*,0e u i b5kre3wjkmd3u00 m. The last corner is occupied by a iu s3kb0umhyjpx(83 5es,r ewk*0 0zd -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a q vcyf :5/ p:9:u-n3j7eewgtz6+t pbqlflp4pside. 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 mapn: 57gp euqcp bj:zlft:6 yf9w+4v3el-p/tq gnitude of the electric field at the square's center?

  A force of 10 N acts on a 2ej:9 ud .kz3va8 fopucharge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude o8du 9p j:v 32oefa.kzuf this electric field?

  A particle with a chacd )uk(6oinf qk99w j4a f(.ps- 6imsn (jf-xqrge 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 electric field of 6000 N/)0,qqyzz:g rp6nt h8b C pointing downward. What charge must be placed on the ball fn8hzgt r y60q:pq,)bzor it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball isy-od (rq,4flin t3xg5kvl6 b: placed inside a uniform electric field, and is suspended against the force of lbx( -tq54lfrkyngo 6vd :3i, gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 psb7;r8fw thx 5d;i2qmC. What is the magnitude of the electric field 5.0 cm from the sphe;7sqi dbxt5fhr; 2w p8re's surface?

  A metal sphere of radius 2.0 cm carriexs6 ou; e9m2v7px2gzf s a charge of 3.0 mC. What is the electric field 6.0 mfx 7 ous2v9 zx;2egp6cm from the center of the sphere?