State the law of conservation of eleczq rybznr xa17ce r97 0of66)atric charge.

  Is it possible for two negative/e)bu yar.j dym4;w 54h hlw/i charges to attract each other?

  Is it possible for a positive and a negative charge to attqc bj3 ;puw;u qim0-zy +*uyc;ract each other?

  A glass rod is rubbed with a piecoca +w-d5qax4 8slx, ye of silk. During the process the glass rod acquires a positive charge and t4+5 xl- aqc8dxasy o,whe silk

  A proton carries a

  The model of the atom shok40h p,hs zox7ws a

  A neutral atom alwaymep:8.k*tyn ps has

  An atom has more electrons th4.h kugl ce,/0 ce ids2nq(ue,an protons. The atom is

  Materials in which the electrons are bound ukl )k pux6)s() 6sknwvery tightly to the nuclei are referred to aknx)k u6u ) wpks()s6ls

  Materials in which the electrons are bound very looselytg 82bvs .k buw/tbuot2:/dl( to the nuclei and can move about freely within the material are refergtb/d2b. /u82k: ut tsw(bolv red to as

  A negatively charged rod nqd2r /+ig cr6lkb7y6os m-m; is brought near one end of an uncharged metal bar. The end of the metal bar 6slc-mnry/mo+bqr67k; gdi2 farthest from the charged rod will be charged

  Sphere A carries a ne hxtdd3)+suw 5t positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is tw)3+dx5uh sd briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positive0za r9im5 *nyaly?

  An originally neutral z ns iw+2r5xh:qb bgo pnl3-79electroscope is briefly touched with a positively charged glass rod. The electroscop7:r5+ l-ibxgs 92wn3qzhb pon e

  An originally neutral electroscope is a7o9f6*zj45tip gwk mv7mcs /grounded briefly while a positively charged glass rod is held near it. After th 4 z9f5mgtvcop*7aws6 7imj/ke glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves set1bznj: kreb qw96(w* parate. Then a negative objectr:1 9jbw(q6et zn*bk w 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 neutral m/cx +nooet 25tv2,oc zfxn2 m2etallic ball rolls straight toward the object, but stopm,+oc2to222/tn ovz xec 5xf ns 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 final charge on each ball?

  Charge is

  What are the units of the Coulomb conr8* / uc p2hbroal44flstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a srxtq t*i;q3.l*nq,b:z w scwj6)h2 kdistance d. The first charge is larger in magnitude than the seconzxc *j r;)i.kqlhqt q3* bt,s2s:nww6 d charge.

  Sphere A carries a net charge and sphere B is neutral. They are pl:aj, zqq30e ed,sifrf cz a-2sn5:*jvaced near each other on an insulated table. Which statement best describ3j-a:z: ds0n5s 2q*fqev,rf eaicz j,es the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges okfcc0 h:o34/7qwm tvsn both objects are doubled with no change iktm o c3qhw0v/47:fcsn separation, the force between them

  Two charges are separated by a distance d and yts5 kyf26mz2exert mutual attractive forces of F on each other. If the charges are separatedm2 26f5tskzyy by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forcef9y 4n; fnlh j4+.*l+t* jogz 1lrwhir F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their*;fzgj 9l+ryhjwfhro 4n14i l+ ln. *t 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 hanqt, xv--:g:zpa+dogppens to the magnitude of th xg tgv:+z pq-o-d:n,ae force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hap q14ull3aaa:2gu 44fkf6 7fm bx0wpia pens to the magnitude of the force on the first e7b1f 3a l4ugk2 x: 6aqalw0i4 uff4amplectron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance od 2h2r 3iln*+rc 4kyrd)9q fw5wflcn*g v. kl;f 1.0 m. What happens to the sizw4 h*r*fc2n.3lrilfdk2lw dqv)5+;g k rn9y c e of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second poincq ilf,1 *wll +mc/+ yld(,ilqt 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(,l+d /l *,lfwlq il1+cymicq the center of the square?

  A point charge of +Q is placed at the centroid of an pfwkim /f3e1b 6e(or;41 qpn aequilateral triangle. When wq/kma1e1 o r4bfe; n(f3ipp6 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 other vertices?

  Which of the following is3+cu szoiqb4qt16 m8e not a vector?

  At twice the distance from a point charge, thebhqx+ske x zs9trf /4h 17u(8m strength of the electric field

  Is it possible to have a zero electric field value between a negative anbca7 bn ze gft9-(+/sid positive chargasbez cf /9 7gt(in+-be along the line joining the two charges?

  Is it possible to have a zero electric field value between two positirxw4b8 s:e8ns3 srm7t2z0je eve charges along thest7w :zj er2xeemn4b8s3 0r8s line joining the two charges?

  Electric field lines near psitive point ch s-zc bm8q.mt3arges

  The electric field shotpamfw3j*u,njmc 8 tv4,tj8 / wn

  Can electric field lines intersect in free space:t) )s4bdlf /dq8 dcl8atg vn)?

  A solid block of metal in electrostatic equilibug kfen38 5 n;g ul;t61ofsw4)dj6aterium is placed in a uniform electric field. Give a st s6a; 4e;ktju3 6tggedwu)lnn5 f8o f1atement concerning the electric field in the block's interior.

  If a solid metal spherea/peyw,iv9yxi/dm hj1:w,uc)/)m tv and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E)iyu,w hix/v1/p dam v ,tmec: j/w)9y) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wheu:1 ovg5yff q2re a uniform electric field is directed straight upward. What can be said concerning the charge on:fq vg yo52u1f the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charge.-bj.cxuo8,c y tjxkt0. -5r amr5bxu

  A positive point charge is enclosed in a hollow metallic sphere that is gr3: j2cfc b5 : tqjc87:jhdmkerounded. As compared to the case without the hollow sphere, the electric field at a pokm jc :c5e72 jcfjth8d3qr: b:int directly above the hollow sphere has

State three properties of condue6 g3 *0xaggjkctors in static equilibrium.

State Gauss's law.

  The charge carried by one electr* dotadhy +86ik3vp xv,a .+dron 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.u sf7whfjy 24)00 mC. How many more protons than electrons does tsu2jw )7yh 4ffhis piece of plastic have?

  What is the charge on 1 kg of protons?mx fa07oz3*3shfjh 4 c

  An atomic nucleus hasx6q)eabk*+ zx qp i;t63mf4tr a charge 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 -4.*wv8 3z3+n 14/zy8gdnmjx jcf wupp 0n0 mC, respectively. What is the magnitude of thnwcznzjv0 p g4*y3 3+d8 fpxnu8/m1jwe electric force between them?

  A 1.0-C charge is 15 m from gujwc* 6dxu x3nd ea0:3qdks)u;m;,ga second charge, and the force between them is 1.0 N. What is 6udcm:n*0 xg;dq swudkj g3,3)x;uae the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart areigv9fgsp y6sc,t8 7n2 w x+-ly they?

  The force between a 0 stm/ 8vbg*sk$30 \; mC$ 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.,ymngm.m m d4(0-N force. If they are moved to a new separation .nm,mymd( g m4of 8.0 cm, what is the electric force between them?

  Three identical point charnx1vp o -z0)nsges of 2.0 mC are placed on the x-axis. The first charge 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 direpn)-0n1xz vo sction 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 q+7egu3hha u 1mC is placed at the origin, -2.0 m C to the right a+1eha3 uhugq 7t 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 fodiss2* *dph3lllowing positions: Q1 = 2.00 mC at x = 1.hs3i2ld*sp d*00 m; Q2 = 3.00 mC at x = 0; 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 placed at the center of a square, and a secon ccp)ity dx2 c: wqs9 mz8k45s,reddne0(r4)nd 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. Whaskcdx05 w, z8drn4(y)c2 rseq ie4pn9)tcd m: t 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); lt juu25h-ln-t s6m1jQ2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What imjt1ujtn s5ll--62h us 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 =f( da c5ys*w(ef:8fxg 5.0 nC is at (0, 0). What is the directi8eywda( 5(s f*cgxff:on of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placev(ru3 9*9asn ou i 2if;zu7ahmd at the vertices of an equilateral triangle which measures 30 cm on oz 2u9nmasih;rfa*uv ( i73u9a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and + 2efkvon5p)k+ 4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place + 2p5k efkv)ona 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 +9.0-C charge is at x = 4.0 uhlno lyoxed 96(2p0l g,21 n9kh :mhrm. Where on the x-axis can a third charge be placed s:ln mlr2 pho2 6gndhk 1e9,09hx yuol(o the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. 6x2 3p sfyu on)e4jn a/8uemlg0x7n4eWhere can a third positive charge +q be placemg nxfxnop6j7)y44/3 s un0e8aee u2ld so that the force on it is zero?

  A copper penny has a mass of 3.0q+uw zwijtbe1 e 3:-7qt3vus5 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 zttx+y q6b6i 6bo,he;up against the force of gravity by the attraction of a fixed proton some distance above it. How far b;h tqet6iy 6xo6,z+babove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonco: x :ii.ftgr6tnducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repuigix.tf6 : :rtlsion 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 magnitude9u(zvcw h p)1,v d3liv of the electric field at a distance of 1.0 m from the nucleus?u, vz1 l(v3cdi9pw)hv

  What are the magnitude and direction of the electric field at a distajb cx2q+o2 7pince of 1.50 m from a 50.0-nC charge?ji22q +cbo xp7

  A 5.0-C charge is 10 m from a/sbczj3ugu b;n .w9g+ a )8nsq small test charge. What is the magnitude of the electricu 3/ uba gbnnqs)8cjwgzs;9.+ field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What i 9 e3 cgw2o;72yqbmlirs the direction of the electric fieldlo2 re9 i3by7;mq2wcg ?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the fzv/s;m deg; :-gm;ynm orce experienced by a 1.0 nC charge plans;g;yvmg;/mde: -z m ced at the location of the test charge?

  Two point charges each hax 5x rwp s 5ca (mf06/gs.wlx99cs2bbeve a value of 3.0 C and are separated by a distance of 4.0 m. What is the eleccwx psxw.b(b0596msl /reaxgf 5 c s92tric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter riq z6/ jf17 nhk(b ecqd93n9astick and a -4.0 mC charge is placed at the 50 cm mark. What is the enqi7qz6an hf dj3 c9r b9(1ek/lectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 j /j3r8 rcbpk8mC charge is placed at the 50 cm mark. At wb k8j3 rc8pjr/hat 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 afd,o lb/c5nj* t x = 0 and x = 0.20 m. What is,*b/ fldo5ncj the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the thr . zi2qy5ot5free corners 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 theiq5r.o yz5t 2f square.

  Consider a square which is 1.0 m on a side. Charges are plac(w5hptu,k0p* *yn 26(oib*gsvp hmrm-on v;ged 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 magniv* uwmo,v6 ; b tn20(nshp5 g(*ri-mogppk*hytude 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 d+web*uinjk : 9fh)h 2t *ej1gplaced in a uniform electric field. What e1khd j 2)gh9e:*w*i+ntujfbis the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of fxiy+ jje9 s0 xg++poial 1s 0t79p6iw$5.0 \times 10^{-3} \; kg$. 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 fu6 ugnyt(-r b:ield of 6000 N/C pointing downward. What (bngtru-6 y:ucharge must be placed on the ball for it to be suspended?

  A foam ball of mass f kv1kj:r*az9 0.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended again jrk fz9k:v1a*st the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 1c:) z6vd x08m zrtdji58rlqg;;sijt.0 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sj8d8c. lzrtsxg0vj:;d t r56 iqm; i)zphere's surface?

  A metal sphere of radius 2.0 cm carrur:kgnw: ie8 ;.g4ctk - kc(bsies a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the spheu ; t 4k8iw:rg kcsk-n(ebg.c:re?