State the law of conservation of elecc byrrqvjc.* d36z1;7yc7ik-fm4 sqmtric charge.

  Is it possible for two negative */a3u laq*xoael7 u7l charges to attract each other?

  Is it possible for a positive and a negative charge to attracjs36 lqgv7ddll s14 6wk*g 9mqney2 p/t each other?

  A glass rod is rubbed with a piece o z435hqsp srl(gq6a:f f silk. During the process the glass rod acquires a positive chargel 5p:h4q3(sqs6 gafrz and the silk

  A proton carries a

  The model of the atom showsllwii55.5w (ypip9r s a

  A neutral atom always ha/s hkuixep6.t, gx t;3s

  An atom has more electromed ex.l*p-cr8xq- 9ons than protons. The atom is

  Materials in which the electrons are bound very tightly tru0-ie: d+psqch +qd *o the nuclei are referred -pe udh+qd*sr0c : iq+to as

  Materials in which the electrons are bound very loosely to the nuclei andnjk+wjf(9pra k 6v)+d can move about freely within the material ard++( 6) vakj pjrn9kwfe referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Ttd2*p7o8n zlt he end of the metal bar farthest from the charged rod will be char od8 lz7np2t*tged

  Sphere A carries a net positive y11kuk lsxr47 p +)to prq:afdn)fr0 6charge, 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 grounx rdrk f0oyk4pst fpu+)1q)r:a7 ln1 6ded. Which statement is correct?

  How can a negatively charged rod chd;y 1r hx3v:b4t1 qfrqarge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged fz 2yxktkp *o0qk-ip8l( . 2woglass rod. The electr (28wyk.qkfxl oz-ppt2k oi *0oscope

  An originally neutral electroscope is grounded briefly whil jljpb-qwp 8bu 9,(*:w.at4 ivso gtw4e a positively charged g:wjo*au t,sbtl -v9q( jp4bpw 8w4.gilass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutralk(p n ,kx ) 9x-e6yxm;uk: cphh3pvk/q electroscope, and the leaves separate. Then a n ; ,np(c e: k)9k/-xpkx3pvky6hxu qhmegative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is p it9*kignz**77pr fjolaced 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 stops. The first ball rolls forward, but does not touch the negative object. 77g9 rotzi** kjp fin* 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 qky28hux ,(hv 8 mie1gCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fd/ sqm9+vp gq-irst charge is larger in magnitude tq-g/+pvqms 9 dhan the second charge.

  Sphere A carries a net chve .6be9n:s, 0fha7m1p dwb;mcn-mk carge and sphere B is neutral. They are placed near each other on an insb,cms0vkbnac.fpm;w e19h-d:e m67nulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain z; 8tt jx1uv(kob2 ,(as1fsz 0+nhnnd force. If the charges on both objects are doubled with no change in separation,h ndu a01,ss2v n; (xzoz8n(tf kjt1b+ the force between them

  Two charges are separated by a distance d and exert mutual attra:mn1.n ;igm oyctive forces of F on each other. If the charges mn1 ig ;:my.noare separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What haogf( r+v 0d(fu*t+q gippens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value? Theu++iv (og (*r0fqft dg force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. n jt x q tnr:ldr3qs19n(y67d* What happens to the magnitude of the force on the proton if a seconstt l(jx*nd3r6q9 nn yqr7d: 1d electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happeplzbaoft9co2ct .08 gv n(+. zns to the magnitude of the force on the first electron if a second electron is p vc gz2t.fz90co t np+.lob(8alaced next to the proton?

  An electron and a proton are separate. m22rp tksk.rd by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m cl2kt.k2 rs.mproser to the proton?

  A point charge of +Q is placed at the center of a square. When a second point cm2djis0w9 4 yf6 1emrcharge 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 chejry2 6 94sci1m 0fdwmarge 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 centroidl6lorpj3dj mq:jpmd/ sf/jk 4(-hy0 ; 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 the magnitude of the force that acts on mm- :/ 3ojfjd4;d(y jh6lqjpl pk0rs/the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is iomh 0 x970e7oohyh/enot a vector?

  At twice the distance from a point chaqh f; r lvu.gp4vii9 end(o.21rge, the strength of the electric field

  Is it possible to have a zero electric field vf+oh/zx +*faacf c h4*alue between a negative and positive charge along the line joining the two c4zaa +chf /ofh*x*+cfharges?

  Is it possible to have a zero electric field value between two positiv4d6dt z6fzer *t1:rqje charges along the line joining the two c6tdq r4*t61rf:z ezdjharges?

  Electric field lines ne xvvk, otuw: yzvh5*18ar psitive point charges

  The electric field shoah r2; cue)d1ao sn/)dp )pd;qwn

  Can electric field lines tcwcxc8smd 7w45v7l(9zqje:n 8rff+ intersect in free space?

  A solid block of metal in electrostatic equkdd4.0oqh 4ushh*q5k0k v ku9ilibrium is placed in a uniform electric field. Give a statement concerning the eleouqhq45h *dk.0v 9khsuk d0k4 ctric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of eq5 tw(zd7 -iee ih0gv*ej/kp5yual diameters are each given the same charge, the electric field (E) midwae*557 e(d/weyi k0p-g ivjz hty between the center and the surface is

  A cubic block of aluminum rests on a wp*slidglfm3bi(7 55 p-uh7rtooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block'3*7 5 t lirlgh5-sbp (ifmd7pus top surface?

  If a conductor is in electrostatic e)6s1eo kfm9qpah yu (u,z(g, fquilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that im4h07vk,oa ne s grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the holloh,nev74oak m 0w sphere has

State three properties of conductors in*i6 q y4dep1ew static equilibrium.

State Gauss's law.

  The charge carried by one el7;4da9tiqa ijectron 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 moruipk3 gv0/ ytd2:hkt 2m u*vn 4uc63mze protons than electrons doe 32p3kvuv*4m /huy0gt6i2n m:c u tkdzs this piece of plastic have?

  What is the charge onh bgs/;z h9o)y 1 kg of protons?

  An atomic nucleus has a charge of5 c k/nmrc/bg o.qbu,4 $+40e$. 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 -4.01ocx z1s-a-9zkl/ral dk+ c 1 giwqb-x v2p+;y mC, respectively. What is the mabq19l r kc1- sdocxy-pkivx/ a1 gw2;+zz+-l agnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the v/.in cmfq2c*g26 kgvfqz o 8()8caqaforce between them is 1.0 N. What is the magnitud8v q)a/fco2qf6cz(km g. c2n8gq*vai e of the second charge?

  Two 1.0-C charges have a force between them o*tu+yxc.a 6jqa v3t-a f 1.0 N. How far apart are they?

  The force between a cg/)ngq n3l q,+blk3t$30 \; mC$ 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 force. If they a /cm4lu7rruhay5 +o*7mml b;pre/m upyoalml5 b +muh77;*rc4r moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the ,;;fpo lo/ gtku-;gxtx-axis. The first charge is at the origin, the;;/ go ,gktluto p;f-x 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 pu ):/q mjroaaim 8gm7/laced 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 for/m o7iag:) mmqaj /ru8ce which acts on the charge at the origin?

  Three point charges are located at the following positionm5, qxst)al 7qs: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = ) l7qa qm,sx5t-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 ofc w i34 i,d(jtipxws8 ,hz+9st a square, and a second point charge ts+jt,i8i,zw3 i sxh(w 9dc4pof -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); Q3 = cd h heugs2:3*5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chahcd 32* sghe:urge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = i) l5cno;w- 4ujy vccorsu,yh+ jw 0(35.0 nC is at (0, 0). What is the direction of the net force on the j,cco+0r5 4u o;jnl y(hi cwwv3sy)u- 5.0 nC charge?

  Three identical charges of 3.0 mC are plac3/yi xld*jkb (j49pcged at the vertices of an equilateral triangle which measures 30 cm oy gk(/pi3c4d*ljjx 9b n 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 separated by 3.0 m.*fo o9 dwqth.rr1aj c24x l,o4 At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the e cr,oh 1x244aojt w.*ofr qd9llectrostatic force acting on it would be zero?

  A +3.0-C charge is at the orig c(f nv1e :4/hyrz/apbv 7eto7in and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charg eph4//zfva 7b vy:(c71entore be placed so the net force on it is zero?

  Charge +2q is placed at the origin and a lqiybr k(1p(a;p g,8charge -q is placed at x = 2a. Where can a third positive charge +q be placed so t ipkq(p (aba ;,1yglr8hat the force on it is zero?

  A copper penny has a mass of 3.f3wy.0 kh e 2ffc f;rao*qza.g7))jyk0 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 force of gravity by the attractiw3 mi cw;yw/v9on of a fixed proton somev; i/w3 ym9cww distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads w ::vfb5q7uowm)z h+fq8 dsy /mhich are 30 cm long. y8w:uh 5 qf)+bmsqm/fov:7dz 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 +40e. 6t1ta, s ucj)9h1ts pc What is the magnitude of the electric field at a sp,tat1hjc)6tu 9 cs 1distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field t-ndnx1c7eg9cpeo k1x+f ;)f at a distance of 1.50 m from a 50.0-nC g7ft9 fne1 ;1ccxk - pne+)dox charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituc.hnu kk r,ek/ fh)e)9de of the electric field at the location r/ u.fk)9) nh,he ckekof the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dire f.ta x.k db*;hvdo98cction of the e9bcha. *x;ok v.dt8 dflectric field?

  A 5.0-C charge is 10 m from a small test charge. zg3tfkt8rm)3e*h 0qhe1nc9 cWhat is the magnitude of the force experienced by a 1.0 nC charge placed at the loctne8 k z9qfcer0m13gt c)*h3 hation of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a disyi9dp0i/ny f*pb s 3l-tance of 4.0 m. What is the electric field at a point midway between the0d3yy/np- i ilfp *s9b two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mmxu x2 3i.ic/-slht.w koy5n6 C charge is placed at the 50 cm mark. What is the electric field at ti.wc-6 nmi3hk.s/ o 5lxytu 2xhe 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm28e.s* lnswn hk,em1d mark of a meter stick and a -4.0 mC charge is placed a ks.,n1menhw l* sd8e2t the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 5zlj2wr-3r)v*lrs fq mC are placed at x = 0 and x = 0.20 m. Whrz3q 5-srw) lr2l*fvj at is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at fr4 s,6g4oc5op. fju4 x.fn/ jsr-uevthe three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fiepg5n o44j-eff 6s.frc. u,r uo 4jxs/vld at the center of the square.

  Consider a square which is 1.0 m on ag(0 uhge70c+atu s xv8 side. 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);cx0(ghvua t seu g70+8 -3.0 mC at (0, 1). What is 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 i;sgu:qgcx : (f 3y3p,cp;bgj vt is placed in a uniform electric field. Wpc:p,bcg( yx 3v;g:g f; 3sujqhat is the magnitude of this electric field?

  A particle with a charg:nv y (xgjw0cjzg,:w4fe64yve 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 electricjs;cc w y gpwfl/:j2on(7+l;(j1aj cp field of 6000 N/C pointing downwaj /w2+ g;la7wcsj ;ylpoj ( cj(:ncp1frd. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of ni-8uz2ql h)j-2.00 nC. The ball is placed insidej8 qz )-lu2ihn 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 ca0)d2j+m xkv1b9t,cvjmjak 8 arries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm fromjbj+xv 02k aa9cmjv8 1t,dm)k the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. (bo gof8 7o-bm What is the electric fieldbb-ooog(f87m 6.0 cm from the center of the sphere?