State the law of consex*w.thxp )q q5bx+3jbrvation of electric charge.

  Is it possible for two negative charges to attract ea/ :fd bkbv50gcch other?

  Is it possible for a positive and a negative chargpk cnag ) jxy285 w+ommi*t,c+e to attract each other?

  A glass rod is rubbed3xi 64xhr4be i with a piece of silk. During the process the glass rod acquires a positive cha 36bixhx ir4e4rge and the silk

  A proton carries a

  The model of the atomqjjh/nf.2 a 0 t1k0ihi shows a

  A neutral atom always ha . j5rm9u7kolts

  An atom has more electrons than protons. The n6fln /xdgce*-5rd)vf:9rwe atom is

  Materials in which the electrons are bound very tightl1jwr-p3wrgdi / hk98ev+wf4 md3kb* gy to the nuclei are referred to ag 81w rwgdd+vmrke4i3-hb*9 jkp3 w /fs

  Materials in which the electrons are bound very loosely to theugs/ahuru++ zfq6 05o5yv8ow nuclei and can move about freely within the material are referre685v uh qw +u+ 0yur5ozfsoa/gd to as

  A negatively charged rod is brought near one end of an wv2io8.ip8rf. o bqgb-8j8m puncharged metal bar. The end of the metal bar farthest from the charged rod will be cha2mrw8i8oq8ogjb 8. .pv- fpibrged

  Sphere A carries a nkby lza e)e0uel* d/7,et positive charge, and sphere B is neutral. They are placed near each other on an insulalee z 0)d7/ yaub,lek*ted table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively6 qa9r r5r+vus7 cubz+i3o/pw charged rod charge an electroscope positively?

  An originally neutral electroscope is brie+v(l7lmn zw o;5s *iyzfly touched with a positively charged ( 5vlisnz *;7lmzo+ywglass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positivelnq:aakjj q,9rh/3zg4 ,c1phw y charged glass rod is held near it. After the glass rod is r, hrnaqc kg,qa wzjh43p/j19 :emoved, the electroscope

  A positive object touches a neutral electroscope, and 8mt xgi uhk. :qm8mj80the leaves separate. Then a negative object is brought near the electroscope, but does not touch muk 80t8 .:hmgm8qxj iit. What happens to the leaves?

  A large negatively charged object is placed on an insuvo *xjht8 ,ex8l1gle:2 1 gdhvlated 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. The21 hlegxg:e1 ,old*h8 tx vj8v 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 Coulomb cons0 rt 5c73tjfmy 2oqq:ofgp+fa /q6d(ntant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first ch*gd5 9i nn y) dsf+e,q(bjaqne)vo,;aarge is larger in magnin5n,eo(a)fai+ )nyj q d9dvs*;ebq,gtude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nj*r5pt6y.a onj n:dkt hr 264np fb:(year each other on an insulated table. Which statement best describes the electrostatic force betwe:2t*(orayp 6f jy j4nrhtn.kp6:5nb den them?

  Two charged objects attract each other with a certain force. If the charges on i p8.h48srtojboth objects are doubled with no change in separ. ho4sitj8r p8ation, the force between them

  Two charges are sepay+iicxh ,e-ogt 0l4,nrated by a distance d and exert mutual attractive forces of F on each other. If the charges are separatxh+niy-tl ,ig0eco4 , ed by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eachgpo3.z bqh*-i other with a force F. What happens to the force between them if one charge is doubled, the other charge i- 3.phozqgbi*s 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. Wha0g*m66t+, g(vrzm y*jxt;ltkquxmfvp6 1 : ht t happens to the magnitude of the force onfpm0mt y1g rgut:j(h6 *k tvxlmx; +*,6 z6tvq the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance ozzyqu ue(c9q 7 7 n oagwkh421oqn3;3cf 1.0 m. What happens to the magq 34n(ye91cnuq2z7k7oozuh; gcwa3qnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happeb *t2jlesw od26zr ;2ey1kvj(ns to the size of the force on the proton if the electrw(26es 2jztvk2; bd* r1jlyeoon is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at thexy1bb-:sz v )i 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 vz yx1:s)b-ibof -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 e7n bm,xq8 h5zthe centroid of an equilateral 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 t75z,8h mxbq enhe 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 t9) fwwd6)im vnot a vector?

  At twice the distance from a point charge, theoa09ac):6.npe x6nktka sh0 x strength of the electric field

  Is it possible to have a zero electric field value between a negative and positigf/qbo9 ( ctb;ve charge along bgbfo/; c (qt9the line joining the two charges?

  Is it possible to have a zero electric field value between two positowyc+gen2 07)w y 5iabv slm;(ive charges along the line joining thwm)ol(5;yw0+i7bc y2 v nsaege two charges?

  Electric field lines near psitive point chargeo lscgkk ,)k0)e8/tzo s

  The electric field s9)yloy.wpxd+xi 3cy1tw d( 7zhown

  Can electric field lines intersect in free space?cyn vp429l0cn/w d6 tm

  A solid block of metal in electrostatic equilibrium is placed in a uniforgex;r bbn.:: wm electric field. Give a statement concerning the e brng; e:x:w.blectric field in the block's interior.

  If a solid metal sphere and a hollo eb at10y19pvu4,nasew metal sphere of equal diameters are each given the same charge, the eetbpaa, y1s v4 19eu0nlectric field (E) midway between the center and the surface is

  A cubic block of aluminum rest l),sn e(t)1 alq(pgzws on a wooden table in a region where a uniform electric field is directed st(,spelnga1 t()wqlz)raight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an iv+gzj:sr(b2l g n 9or6na; gn7,wyz(electric charge

  A positive point charge is enclosed in a hollow metall*6 zb;bfgmdku c-ui- jey- 9+iic sphere that is grounded. As compared to the case without the hollow sphere, the e; - ckbj96beumfy+g-*i ud i-zlectric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriu) )n fdfv q6mf *l(lvp drc50-j)dkqqkvkz97+m.

State Gauss's law.

  The charge carried by one electron iuzw)-1x5mg vsz:8ikr s $e = -1.6 \times 10^{-19} \; C$. 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 *qn)t y/3i0+d wb abotmany more protons than electrons does this piece of plastic h+/*)3 qantib0y wtobdave?

  What is the charge on/21v l.1 ml fdy ,ws:iialg-le 1 kg of protons?

  An atomic nucleus has a charg 7jwej if-zs1:e 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 qm15 oyozx- k)h-i(vq, have charge values of 2.0 and -4.0 mC, respectivel-(ho5q)ki-zqxy 1v o my. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and m1to u3 c soz7*y1ao77rj a43k/a bqtagj7cu4the force between them is 1.0 N. What is the magnitude of t7uo aumjoj4z73a1 7t*4cqr1 c37oyka b/t agshe second charge?

  Two 1.0-C charges havea4jta6bmpc :,sm/5a x a force between them of 1.0 N. How far apart are they?

  The force between a g+.w0c-0rit udo :;dggjo z p9$30 \; mC$ 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.av0o c c2jbotm y;1*d+0-N force. If they are moved o* 2vdcm0+ t1o;abcy jto a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mCg0qs3)qw4nt,o 2tep w are placed on the x-axis. The first charge is at the origin, the secq23eowp),0ntwt s 4q gond 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 pwm..f ;d43l pul eiq*vlaced on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the rightm4wid e*v ;.3p.uqll f 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 positcgm4s3( avj f0ions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0;4 gm (j0fva3cs Q3 = -5.00 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 t4 lj7x: cztx.6 j1egrplaced at the center of a square, and a second point cha4t1xlx .cj:e6 gt7rjz rge 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m);rorf 7x/*t-tre7p/ dw2x(qmy Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.tt o7*x q7rx(red-yrm pf/2/w 0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at;n2r9a rz8o;j5jsud q (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC c s8o q2ja9rdnr; jz5u;harge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaterann/c*ihl: dpw3zqu; 9l triangle w*u/:;9d wcinq 3nzlph hich measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sep2 t6 ji,6ixrkkgxf7rb tp lnu,23th 7*(g:eikarated by 3.0 m. At what point, on a line between the tju: grn2ttlb,ki*etkx 76 2x,r ( phf k3g6ii7wo 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 anfymxc8ol; w c ;nzl-kt0t)-55+i;uca ujad9md a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net forcex+a5mzijntol c u; ;0)wymcau85td ; - -9lkcf on it is zero?

  Charge +2q is placed aty(iepi 6k /4lk the origin and charge -q is placed at x = 2a. Where canep( /yik li46k a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totxnhhrnp, 4i5s6f,otw bmkn3 p 7 ,k2i,al 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 upir y l+ 7hqcz5u)v3(vr against the force of gravity by the attraction of a fixed proton some distance above it. How far above qrvv7 )3ic5lhy+ z(ur the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductingau :n;:g-13cdu r snbg threads which are 30 cm long.:bdr g;-g unu1a 3:nsc Both are given 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 akidq: :-m4lf 8bc-cpv charge of +40e. What is the magnitude of the electric field at a dip k-cvq-:b48 :clidm fstance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.at8, 667)a1y qblkd3jh anczq50 m from a 5 b)6qdhqak6na1,3czj87 ylat0.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What k0oa5u3m jw4jsrhn;ln. w8v q1x3hv 6 o;nt7zis the magnitude of the electric field at the location of the t73 nmnwux ;5zrtvh; ws 6n1qo3la0k joj.v48hest charge?

  A 5.0-C charge is 10 m from je.-0zsu ow p ; h*e.hv(uthq 0n0x2sja small test charge. What is the direction of the ewp20q* .s0hzvsntj eh 0ue(h -.uo x;jlectric field?

  A 5.0-C charge is 10 m from a small test chargk2+quj(3s ()mi tsu(w-rfb aqe. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charg2j-qq (k+m(bsuf3traiuw( s ) e?

  Two point charges each have a value of 3.0;wpl81v cmahiv 8* 1kt0uek 2j C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two ipwv cu*ajm;2evlkk 1ht1088 charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stiassv u*d xb1*rru z:x*n4q- 7jck and a -4.0 mC charge is placed at thedr1bs 7 sz*4r juvq*-xun:ax* 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is p)( cp4j8+zjqdzzw- u *5 ohljglaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point o(l8u qc j*jz4)5 z jozdwp+hg-n a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed) w x(doga9;a qen.(qs at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between th q(aw9q nexgsoa;d. ()em?

  Three 3.0 mC charges are at the three corners of gjbf3lcigso o0)9 ,u6a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find tbgif)cj ,u6 ls0o og93he electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed atl lxfc(-vp+sf c+3*snn j8:u u 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:+ cxj3lnu*spvu slfnc+- f( 8 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 placed in a,4a p yz87lv)nk igf6n uniform electric field. What is the magnitude of this electri)ln7 6pzn ia yk,8g4fvc field?

  A particle with a charge of7 g )/zlqka ,g(y knr,wdh*2sn 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:mlu05/9 eyr,pbd rem placed in an electric field of 6000 N/C pointing downward. What chau,9 e/p y0mer lr:m5bdrge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.15a56, duu 1 (lk9d on7rg.xyk:aqqa el60 g carries a charge of -2.00 nC. The ball is placed ins e.:9knk6lqa5 (6r1 xgyd qauluda7o ,ide a uniform electric field, 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 chargegoktr1plgq .3k8hq,h x036s d of +2.0 mC. What is the magnitude of g6 r3k h3 g0.h,qdo8k1sqtp lxthe electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm u m*9k2,k4o 5mk ibs hb4:5sz(ppfrtbcarries a charge of 3.0 mC. What is the electric field 6.0 cm from the c hpz5* rpbitms,ubk:4k9o(4mk52s fbenter of the sphere?