State the law of conservation of electric chargte//k* lj lr0me.

  Is it possible for two negative charges to awvp1 ,fyi2xjk7 t-o g9ttract each other?

  Is it possible for a positive and a negative(np+w1 pjc5a;h t9l q)z.i1xgz s;yo4ogkbz- charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glasss,o* az6i0 a y9p-u/d,m rw hfe/utoy1 rod acquires ads/9yryt wi/ h*1oomau ,0fa,epz6 u- positive charge and the silk

  A proton carries a

  The model of the atom shows j jcs( jz6q08 9pl9wjsa

  A neutral atom always qyzl:a(bs 0vt*gtq, 4has

  An atom has more electrons than protons. The ato- 8fa xk0:hk4.xsofyk b,u c/km is

  Materials in which the electrons are bound very tightly to the nuclei are refrnr1 e /6zmofb3xr1w,erred 16nw3z bemx,1r r/rofto as

  Materials in which the electrons are bound very looselyavrim87zpcz i.k8f7 w:;l8 n l to the nuclei and can move about freely within the ip . 8ik7wlrmvn8z;z cl87fa: material are referred to as

  A negatively charged rod is brought near one s*s4me b).fsb -cq/pnend of an uncharged metal bar. The end of the metal bar farthest from the chab-p.n/mbc4* sq s)fs erged rod will be charged

  Sphere A carries a net positive charged-8 wm 5f3cggs, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is brie 8gfgc5m-wd3sfly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an eg( /6se sn(gyhydfxuw ,0 j1r6lectroscope positively?

  An originally neutral electroscope is briefly to vyqwa0j2tts);yf ),cuched with a positively charged glass rod. The elecsfca,qj; )2y y0wt )tvtroscope

  An originally neutral electroscope is grounded pc6 6wd8pj lpc-)hp, ubriefly while a positively charged glass rod is held near it. p6 h8uj,cppw d p6l)c-After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separataq19esy2, eh+wo 9(xwbx.mh sbq i5m-e. Then a negative object is brought near the electroscope, but does 92wm( beyshqw xx h+mo s5eq. -9,ab1inot touch it. What happens to the leaves?

  A large negatively chargek8sqj2h y*su -d object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stoukyq *s-h28jsps 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 Coulombudb2 : v2abys:rct . ,zw7zbjbo+j4x/ constant $k$, which appears in Coulomb's law?

  Two charged objects a x v(lwasfghvj8pcbo e:+77/:):tblmxs i +n*re separated by a distance d. The first charge is larger in magnitude than the second char:cnv(a)txobi: sh:7l ++v /e fp w8gmx*bs 7jlge.

  Sphere A carries a net chargek5 hw+c;a fsw) and sphere B is neutral. They are placed near each other on an insulateckhfw )aw; s+5d table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each oth5 (r( it5-d5va4job:cmb sopder with a certain force. If the charges on both :jt (m 55bo4(p -vsdobdacir5 objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d andhd *ij)h6ct j/ exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what ar)6ht* j jicdh/e the new mutual forces?

  Two charged objects attract each other with a force F. What hx8jrh34 jjv gu,bhh76hf7g 2 fappens to the force between them if one charge is doubled, the other charge is tripled, and the separh2g 6fr7jhu 7x jf, b3jvh8gh4ation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton au31 g8bty z d9vv.3n.c(ol4r)uhjhhhre separated by a distance of 1.0 m. What happens to the magnitude of the force on t.gjc b(onth) uy31vhl3u9 8v4dhr z h.he 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 happe-vrr)6+ 2yj r+cldmed8bmt 3cns to the magnitude of the force on the first electron if a secl+c mm8d yj2vet3 b)rrr6c-+dond electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0a v7ve( e94ilo m. What happens to the size of the force on the proton if the electron is moved 0.50 m clos49oeel(vi 7a ver to the proton?

  A point charge of +Q i55ug me k;ic:q :tmfny06h ob1yoks +,s placed at the center of a square. When a second point chargek,o6c t 5i;b:yu0ksn 1gef :q m5ymo+h 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 square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. Wh/lbe)y:0 x:/jgtjkuu en a second charge of +Q is placed at one of t uuly) t0kg/b :jxe:/jhe 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 is not a vector mln,3 kp-2xpr?

  At twice the distance from a point charge, the strength of zffu-. qcwq(9q+oe+xthe electric field

  Is it possible to have a zero electric field*) i/i wfrzoe* value between a negative and positive charge along the line joining the twofi)o* zi/wer* charges?

  Is it possible to have a zero electric-2h/dgj(5w rq bol5hy field value between two positive charges along the line joining the 5g5w hl-b j2rq( y/hdotwo charges?

  Electric field lines near psitive p,/n;67eel jv*1 ya9g gr qdlktoint charges

  The electric field shownho2z vn5w.1h)r-fg qt

  Can electric field lines intersect in free space.4m8rm (rmd xb?

  A solid block of metal in electrostatic equilibriiu50np89kk vy um is placed in a uniform electric field. Give a statement concerni8vy0ki k9p 5unng the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere f4;s:linp9f4m t ef/hof equal diameters are each given th4s nht4i9e: f ;ffml/pe same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rety6nz+ +*aki rsts on a wooden table in a region where a uniform electric field is directed straight upward. What c*iz6 yktrn +a+an be said concerning the charge on the block's top surface?

  If a conductor is in electnk:+mbl8tk ; w8x3k vthmv:e;rostatic equilibrium near an electric charge

  A positive point charge is enghr70jug 9i a(b 9k6mcj1d1 leclosed in a hollow metallic sphere that is grounded. As compared1a(jh6 md0j9ckgg b 1 el7ir9u to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties3wcly , vyeb a*h03f3s of conductors in static equilibrium.

State Gauss's law.

  The charge carried byufx5wr ff1euuu8. 77 i u ae-o5m )tvuw7(sh)a one 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 haz1txtpgx,.g) s a net charge of +2.00 mC. How many more protons than electrons does this piece of plastic haxp g.g) ,zx1ttve?

  What is the charge on 1 kg ayrb;r.yp i--of protons?

  An atomic nucleus has a 2d t9;zrb4u/hk s wrs),mqy 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 -4.0 mC, /l9nzd9cd rejiks 8i /2eba79 respectively. What is the magnitude of the e/9i7cdei8j9sdeb/k r 9a2l zn lectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them1fy : f;hcyc3f d j)e8hp-lxuf4sp n2 q.fi3,u is 1.0 N. Whatp .sqiucy f,2- pf)3 4leynchx8fj1;hff u3:d is the magnitude of the second charge?

  Two 1.0-C charges have a fl 6u/eii- j/kdorce between them of 1.0 N. How far apart are they?

  The force between a bfj pgp*swj ;uhp:)x*.*p ( qvl t6l4;rjkaj.$30 \; mC$ 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. t)i ixd ns07n(If they are moved to a newstnid) 0xni7 ( separation of 8.0 cm, what is the electric force between them?

  Three identical point chargesw9vnqd4)fjo tg74cz8 .out i: 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 7gd.tco8t 9w4j:)oiq4 vfu znthe 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 ab cv.yr3hf*5 .ugd8cg re placed 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 force wh8 v* gdhgr.5y .c3fcubich acts on the charge at the origin?

  Three point charges are located at the following positions: Q1k.os4 *3og:ffa) ,pem gh,etk = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is.go,hp4ft)e k *ega: 3,ofmks the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the c4k5t(r5qrpv/hkfq x; enter 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 charge of -Q is placed at the lo kk5/4(xt5fprrhqq v;wer-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC nv8c-iqw7 ec; dp0nhmfi*7a+is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). W c-+qn a;dnm* ef 07ii7wch8vphat is 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 = 5.0 nC is a.3k,xcvnio m v507p.u:z bi *luvjg*xt (0, 0). W3*lo:x gic0p iv bvvu7z,kjm. xu*5n.hat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placedwmr vo2ty)e3 80s+nvinpd: /w at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which amo )82:tn3pdwev/0svir n y+wcts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m.111kq5wxe j qt At what point, on a 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 zer1 wjx1q t5ke1qo?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where on 3fyp+/ dgt fn(z2jene 5y,-dwthe x-axis can a third charge be placed so th2ne+tz/fjw 5yy3-n d (p g,efde net force on it is zero?

  Charge +2q is placed at the origin and cx +6:wk h ntltj*mi;m-8yd ,ktharge -q is placed at x = 2a. Where can a third positive charge +q be placed so that kdt+-n,: kl yjmhwt8m6i ;*x tthe force on it is zero?

  A copper penny has a 0w ju hcc6bk,i /w).htmass 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 up against the force of gravity by the at1z zb2eo+ywi) hnv m1-traction of a fixed proton some dz1h+ )zmwo1nyebvi - 2istance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point b6e e39;+1f adtdff/urgz v9guy nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion fo3g9f;a td fg/ duez+rvu1f9e6rces 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 th6r-cpss9iyp t s3za;6 e magnitude of the electric field at a distance of 1.0 m from the nucleussy patzs9s-63 i;rc6p?

  What are the magnitude and direction of the electric field at a distah*j:hgk-( y:dsqzdp rl v ..ud8ysj y0a. y(7rnce of 1.50 m from a 50.0-n.hy..*rs pv:(kyuq8yaddyj:h d70z (l s rjg -C charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitmafs1 7l 2/urxude of the electric field at thl 2s1rxmu7 a/fe location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whz4sy+b+k h9a zat is the direction of the electric z+b4+hksa 9z yfield?

  A 5.0-C charge is 10 m from a small test charge. mpy0a8l zf7*f What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test char0 8flympaz7*fge?

  Two point charges each have a value of 3.0 C and are separated by a distancv q nar9: llw:h7v;lh1e of 4.vr:w;nh9l :lqvh1a l7 0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is playy 1z1 h -**po6g2guageao od0ced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. W- ya1gpa go6eudyog* 1z*h 2o0hat is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sou92 wgr)f; lp th7m1dtick and a -4.0 mC charge is placed f;hu) 17ldm2trwgo9 pat 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 andytonnk (1lbs+(f8wl 2 -7.0 mC are placed at x = 0 and x = 0.20 m. What is thek+ t8ynfbw(1(onll 2s magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of siqq,dp+na1l;c 4( u/e:tw cnjs6q r6wtde 0.50 m. The last corner is occupied by a -3.0 mC charge.slj(enq :waw,nd;qt cqp 4r61 t/c+6 u Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners j8ok3a,ha +-2hxiygs of the square as follows: + 8g2asx3-hik +yoa,h j4.0 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's center?

  A force of 10 N acts on a charge of 5.0 mC when jiwj*y14: ioo it is placed in a uniform electric field. What is the magnitude of this:*jiy oi1 owj4 electric field?

  A particle with a charlmw7w ) wce8(wge 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 (c it6ry61 vhoin an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be shy( t16cri ov6uspended?

  A foam ball of mass 0.15 qs8kuf(wmr)70 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is r) s87kqu (fwmsuspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chargase+qb8f *j ixcla.) 8e of +2.0 mC. What is the magnitude of the electxs q fca )e.8i+b8jla*ric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 me 0 e+hjgwz;-4h+g8v*jw*zajl 7xxuzC. What is the electric field 6.0 cm f+ j*8z0 ;g+j* h7ug w4lewzahzxvexj -rom the center of the sphere?