State the law of conservation of electric pxp2 vzc99((acug/sk 8o j,jm charge.

  Is it possible for two negative charges 2i9lir k z14,uil0grrgy 3r7oto attract each other?

  Is it possible for a positive aglbz*n 5xnz1 b2pm66w nd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process iaf;w6 , 2dtivv0qd8gex m*+dthe glass rod acquires a positiev;xm i ,dt6gw0d8*afqdi 2 v+ve charge and the silk

  A proton carries a

  The model of the ato3vxf)m,e7b;kqk 8e d kkpo7 j7m shows a

  A neutral atom always has-)/.b72taiu,u5n :eik fpyjofn wfd2

  An atom has more electn n8mipv xt6o,xyyenz)6 ,4 2prons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refsp7z/vvh 4cx7erred to/77svh 4 cpxzv as

  Materials in which the electrons are bound very loosely to the nuclei and v8yry. (uyem(can move about freely w.(u(y8 ym ryevithin the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal b e9g nha3do32jar. The end of the metal bar farthest from the cn3egj2 3a9 odhharged rod will be charged

  Sphere A carries a net positive chargeq-ky e6+ 8bb*n rp.ixp, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which s*yenqb - xprp68i+kb.tatement is correct?

  How can a negatively charged rod charge an electroscope .(2 +rt g5,kcsjgv zyppositively?

  An originally neutral electroscope xh4tfyt/m69s b; xgk9is briefly touched with a positively charged glass rod. The electrght6fmkxys4x b /t9;9oscope

  An originally neutral electroscope is ground :/beez vhmb 0jhwe54)ed briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electroscopbev)h e: m/ew j4bhz50e

  A positive object touches a a/ckc.u, x*-l6jb* y19d .e mzytpczyneutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. cy1 .x6y9czdyeackb/* z,t-jpm ul*. What happens to the leaves?

  A large negatively chaug5btyi8k 4vz+g rfx/8w7+oy rged object 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 ball rolls along the path followed by the first ball, strikes the first ball, and 7rgkyxg8vtiufob y 5+ +z 4/8wstops. 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 coxl(-mbzk 6e m0nstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by xkhs,rws)ozd 271o r+a distance d. The first charge is larger in ma)x7 ro1ks sz 2+odwh,rgnitude than the second charge.

  Sphere A carries a net chi-;m*xq9/y.qaf m nyearge and sphere B is neutral. They are placed near each other on an insulated table. Which stia .mn*qmfy e/x9-q;y atement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain f-9ka3 -ur4hyp4hcgv gorce. If the charges on both objects are doubled with no change in separation, the forcecyg4vhap 3r4uk 9 --gh between them

  Two charges are separatedyyfm 8 ;:c8zul by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by y c:f8l;8yzum a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a i4tiu(ax /0 5u(gc/xx 4qbzq,5 vccufforce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance 5 fc (gbu0czx q4/xvq(5tc 4axu, i/iubetween 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 1.0n7 u.gte) 8chx79as iz m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first elgc7u.s9)niaeht7 z x 8ectron?

  An electron and a proton are separated by a s z8qa/+o5 -guqci05 ps/w xakdistance of 1.0 m. What happens to the magnitude of the force on the firstco qsszu p5aq k5x/w+g8 i/-0a 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. Wha; y clp4oyg0is oyamhx )o3*6-t happens to the size of the force on the proton if the electron is moved 0.50 m closer to the a4ic oyo0 yy*ophx 6m )3lg;s-proton?

  A point charge of +Q is placed at the cene 65 s6etj*dnfzywex2g1 5s5v ter 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 the sq5fe e25w e66xy*n1zd stj gsv5uare?

  A point charge of +Q is placed at the centroid of akclkm 04m)2r 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 the magnitude of the f rmca2klm0k 4)orce 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 zzxco:c68t3l7eguw(a vector?

  At twice the distance from a point c36 :mifs qul,rharge, the strength of the electric field

  Is it possible to have a zero electric 8 0y7a yfovfkj16e.c mfield value between a negative and positive charge along the li 1jf 870vfyc6mka ye.one joining the two charges?

  Is it possible to have a zero ele6bkn.tfurl + v.h mx myb1q+,-ctric field value between two positive charges along the line hn r b.kt+x6l,m.b-fyq1vm +u joining the two charges?

  Electric field lines n/uqr*k nrv7y:ear psitive point charges

  The electric field shown kcr yrl5wnng vtwderi*g3h-u, (39 30

  Can electric field lines intersect in free sx3 i+i*s+7u*jlz(ravxa (, siil ar 2kpace?

  A solid block of metal in electrostatic equilibrium is placed in a unifor9*c:jgip*m8sek)3n2 m j gvd vm electric field. Give a statement concerning the electric field in the block's int8 93)mgep v2n: dgs kimjv*j*cerior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eaz2o.u 6e v .+bhgsi-ytpme1s 7ch given the same charge, the electt.1mh es bz-p.sg7i+yv 6e2ouric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on x8+fzd 0b5zqw a wooden table in a region where a uniform electric field is directed straight upward. x58 fqdwz+bz0 What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an bk57v .wv 9stg 3 :g8rnuy/wsoelectric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grouc/cjbwp:d p18nded. As compared to th : /c81pdjwpcbe case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equii.ghoc+y0ypp4 ;bp +ny6o .uu. ,aglu librium.

State Gauss's law.

  The charge carried by one(r7r)gj)h zm dnfx:-s 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 of +2.00 mC. How many more protons thaiq*yy*h-3he k n electrons does this 3i*h kyhqey-*piece of plastic have?

  What is the charge on 1 kg of u4 h pljd6kk)7protons?

  An atomic nucleus has a charowh-w9ovt j.o+ gmnw sj-- 5f6ge 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 c m4m7frv8 lc76pj j9w,cs1fczharge values of 2.0 and -4.0 mC, respectively. What is the magnitude of fs,mj cw9crz671 mjp7v f4l c8the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forcp2dcepz,+s: xptr jl/+r(a k 3e between them is 1.0 N (,psr2a:kj t+zdl+/p3 crxpe. What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.5kavqz 60e,3ym:3a lwixn7 :wr gn fr,0 N. How far apart are they?

  The force between a mp-wyq 4e4bue hvekvfw,7 12iek, 8k0$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm a-e 9+je)s,a7edhlfz mpart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is themh e9fa7)slej e- +d,z electric force between them?

  Three identical point charges of 2.0 mC are placed o0dcir cray;c *; (hyw0n the x-axis. The first chargeh rc r;yic(wya*0 0;dc 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 are placed on the x-axis. A .( skyu ldd47zcd 9c0f7pzo6k charge of +2.0 mC is placed at the origin, -2.0 m Cksk6fl4cz u.0( ddzo9y7 c7dp 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 charge at the origin?

  Three point charges are located at the fl- zk4 at ri0ts++xbc-ollowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC a+4 -kr a+b-ctzl 0txsit x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is p 4hhh -qv6,ye zt1fzv7laced 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 chargy v hz4f thqv-hz1,e67e of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1+j ;m l7wna.z(e liqj:.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net for+(iq7:nwj zj m.;lalece 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 p- rm+l xs8slaxtym 7:bo)43km); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charge?x to4ys3+mmlp-:7xlb)ks a8 r

  Three identical charges of 3.0 mC are placed at thev aj(qj h+-2x *pp m (:3jht;ewlo2xse vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which wej(:x *22jl o+ e-sp3h;vjampx q (htacts on any one of the charges?

  Consider point charges of +Q and +4Q, which xmzc9eo4ut.lm122vf are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place 9 ft4oev2c z1mlx2um. 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 +9.0-C charge is at zoral 6zi . ;la+e7n:nx = 4.0 m. Where on the x-axisn o lz:nazlra .e76+;i can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origfc)n47ezl ty8in and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the f)tfl8ez4c7y n orce on it is zero?

  A copper penny has a mass of 3.0 gopztklcna)m x-,s 7 .0. 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 force wqnooh3w8a c+ t:;av(h ,fyd ;of gravity by the attraction of a fixed proton some distance above it. Hoo dh(qca8;+3v:t;,w af n oywhw far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduc)n nidy; 9td3pting threads which are 30 cm long.;ntp39d n)y id 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 a charge of +40e9m ,2nyhy*u gan2b8o h. What is the magnitude of the electric field at a distance of 1.0 m from the nbh,hu *2n2ymg yona98ucleus?

  What are the magnitude and direction of th0 jn67y6zgs(k/g es vlkuhe2 ,e electric field at a distance of 1.50 m frok7zh(6 us2ekn gsjl/e vgy,06m a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thnx 9 m2xe(u6.zh*nwwrm(dyi+e electric field at the lod *w .x9r 62ynzhxei+mw( umn(cation of the test charge?

  A 5.0-C charge is 10 m from a small 9zn1wgzn67m4, w9 tvzkxtx7w test charge. What is the direction of the eleczz4x 7n tnw6xm7 w,9v tw1z9gktric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of2ubrb8*u:x8td vhu2 i the force udtxb82i uhv :ru*82bexperienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.06g4uurr;m01bc ;und c C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two char;ub cmrr4d un 0;c6u1gges?

  A 5.0-mC charge is placed at th xq0y*pmio- jt +bp4v.e 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. 0p*-+mptxvqb. i yjo 4What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark ofs6 :17f4v9ryy5 xaav2awyok srex-.g:vz i/ r a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At wh.5x/ wverv7:x 4i261 k9ry vsysy-zarag:ofaat 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 = 0q;e2+9s85ombzw n r2oxa + wek b58xnb.20 m. What is the magnitude of the electric field at the point midwa2a;2bzmqe x x+n+n5k rws58owbo89eby between them?

  Three 3.0 mC charges are at the three corner.r1 n9 oyu1qh6, 1tjs+hj d,whob+knks 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 the1jh 16oh o9shnknb+w,y+qrd,jtu k 1. square.

  Consider a square which is 1.0 m on a side.zzn t .4 t1z:rrox*z-s 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 magnitude of the electric field at the square'ssz zo4* r1z. -ttz:xnr center?

  A force of 10 N acts on a charge of 5.0 mC when igdnr hpmb1 63eaa2-1nt is placed in a uniform electric field. What is the magnitude of this electric fiel1r16ae 2-ph m3ndang bd?

  A particle with a chw* wb45o9tz3w :hn r4i/bs m*/hlrec sarge 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/C ols)o qi :7 z-4iobdv.pointing downward. Who.vqd bs i4-o7loiz:)at charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charq ;ho)1fpvqag; wjra 9 p9o47mge of -2.00 nC. The ball is placed inside a un apwmojqqag1f; ;)r794hp9oviform 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 m56aul9s2g *qc wu6hh rx vobg6i-5o 910 cm carries a charge of +2.0 mC. What is the magnitude of the electric fieldba - 6rcgh6ou5hm v9wx5qis9 g*6lu 2o 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whaww)7t +qrfu r3t is the electric field 6.0 cm fromu )+rtwr 3fq7w the center of the sphere?