State the law of conservation of electric chaerfz o*h-mcq b5s4, iz ti:,0ivz*fj6rge.

  Is it possible for two negative charges to attract each othe(ux,8 iosza*pu(u)7)t mmc y -llwc)u r?

  Is it possible for a pojb(mk hm 0.ijf66r gcsooh3d;w(t +s5sitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During1xrgrkbj +j8u0y8*w v the process the glass rod acquires a posit+w1jry0 u vj8gx b8*rkive charge and the silk

  A proton carries a

  The model of the atom showsc ::jm :/lji 6fyjo6dv a

  A neutral atom always ha 3 eskko700vvws

  An atom has more electrons than protons. The atom )fg2)vtq 6v kqt 00kcsz-k: .bb rce1tis

  Materials in which the electrons are bound very tightly to the nucle yy;t0yll 6bh.i are referred ylt0.lb;y h6 yto as

  Materials in which the electro b1zr s;j ny(p*s++/w(p +y43fjbi zpdpd-drdns are bound very loosely to the nuclei and can move about freely within the material are referred to1y3dpdd pj+szn;fb*jp +-rib( ( /sp+r y dz4w as

  A negatively charged rod is broughe9-hua1 q+fi (db+ytht near one end of an uncharged metal bar. The end of the meia d q(h+1hyfte u-b+9tal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B i 4ji- osrx7p0o+v7hf is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is corre fvpj-o707osi+ hx4irct?

  How can a negatively c9*qg/55.o o( e htlibetm9vhtwk 0lq .harged rod charge an electroscope positively?

  An originally neutral electsz..l nt4hy 757gj e)j5lzgubroscope is briefly touched with a positively charged glass rod. The electroscope gz7.sg7n4euy5 l)tz jhljb 5.

  An originally neutral electroscope isxh;6mz zp .v*j grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the6z.z;h xp jv*m electroscope

  A positive object touches a neutral electroscope, and5lnz miv3k), *jv8je /17 sw3ot ethsn the leaves separate. Then a negative object is brought near the electros/e3sv3t*5wl hs,om8nejjntk )z i17 vcope, but does not touch it. What happens to the leaves?

  A large negatively charged object istpbd.4 2s 6aco 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 t4t6db cop.a s2he 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 Coulomz.z +86mq-vriu 1cx qab constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is large8p(huervd;r qr2g0/fte t9 z8r in magnitude than thef8;tg re(r9 qdvuzt/ rh0p e28 second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed ne0x ,scq(zjw70 u xbf,uar each other on an insulated table. Which stat,xscqb0f0x7(u,z w ujement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges on qaf 8iuvxlpiqq9 nq9bs)+,t2w8 j y :2lm 0gq*b2s wv2q8q mfl:8g9,inu* til bp 09a )+xqqyqjoth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutualmrvi5. taol9ync *hg *3g hz92lie6q3 attractive forces of F on t *69vngai.3ie y*oqzc 25l 9 lr3mhgheach other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hap4; zwcx vs58wid5biw ,pens to the force between them if one,vwdis4c iwwzx5b85; charge is doubled, the other charge is 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. Wopij,,tf6llj9pd kp- 8d6 9yahat happens to the magnitude of theoja-d8d 6j9,6itpfk pylp9 ,l 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 hap7 nl 4jx1njovg.+vn ( cfw4tt)pens to the magnitude of the force on the first electr4novl(t1)nnx.gj wfv4ctj +7 on if a second electron is placed next to the proton?

  An electron and a proton ar h;4 lk/az 1.-)lmeochu8+xkz-gypjx e separated 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 closer tmk)u1 j llok+xz ey84cx;pa- -z.hhg/o the proton?

  A point charge of +Q is placed at the center of a square. When a sbwgy j-z (bg-e0 3j:esecond 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, identicabj s0gj3be ew-g (z:-yl 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 ecf 7fg4:c ls ah/,;r;j tui-xfquilateral triangle. When a second charge of +Q is plac x/ia7f:u,fscc 4 lt-r;h jg;fed 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 is no2xk 44wlw:y0rp q6pzkiu3) 1lq4e ofut a vector?

  At twice the distance from a point charge, the sthfsrg 2a0+a 7p38bg lbrength of the electric field

  Is it possible to have a zero electric 7o y1,;ub 7-gpzrmhdifield value between a negative and positive g7mp riyzu,7h1bo; -d charge along the line joining the two charges?

  Is it possible to have a zero electric vp8 c1 pbq 3eiuk0z53mfield value between two positive charges along q3 810bmc5p puvz 3eikthe line joining the two charges?

  Electric field lines near psit /hzedtvc0l h40vgo+ixfq3 /1 ive point charges

  The electric field shown rfpu)7wgg9b;ct: h ;mhs (6p 7zsw)vd

  Can electric field lines inter)+p3s fqi3zxg sect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform gr 6ff*z 7nc tox92fhrr( e*(relectric field.zerrt*fr92h fgn*7( ox(cr f6 Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each fie*z x4zvtj2br062 ugiven the same charge, the electric field (E) midway betweez0tjzbx22f 4* eiurv6n the center and the surface is

  A cubic block of aluminum rests on a wiem4z7 v .my *2wrzcx .uj*y/looden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the*.24u w.y *vmmlzirxzc7/ yje block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chi r9qztf)f l7lnon6*4 zo/5;scq.t;vda1 sw aarge

  A positive point charge i jt.7;n+8sy8fmhrp ;n :rr aiks enclosed in a hollow metallic sphere that is grounded. As compared ta;ts:7jrp;frny8.8 mhn+i k ro the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of oeja6ee+86z ycy(1 crrwi+i/ p,, iqj4 x+z ltconductors in static equilibrium.

State Gauss's law.

  The charge carried by one eley9 hm t:1;gohdw7b /x.1 c8bsqsw0 wnvctron 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 than-fu gz 4z.un8k,odjy. electrons does this piece of plasticf8 -yd,.nugouk.zj 4 z have?

  What is the charge on 1 kg of pro bw8alrs;6*c ytons?

  An atomic nucleus has a charge o;+galcmy4uo9w;u 26yyz ga 5 xf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sesln8: 0uwf( reparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. Whs(flw 0e rn8:uat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second c- tdlv 0dsm5v 5*gfg2charge, and the force between them is 1.0 N. What is the magnitude of t lgdt 5f 5cs2v-d0v*gmhe second charge?

  Two 1.0-C charges have a force between themucq ,ku 52p5 xd 6rwsr f;*b)srly5.iy of 1.0 N. How far apart are they?

  The force between a stt 7cm3z5b7x$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart+kd e7*js7hku( : w 39oqjbilr, experience a 1.0-N force. If they are moved3srkldj7:q9b*+7u(wheo ikj 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 x-axis. The first chab*.,ln-ki nc10e sscerge is at th lebk -scc,*10nin se.e 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.(q: iukc:uydlaw 49(w A charge of +2.0 mC is placed at the origin, -2.0 m C to the righkw lua(uyq4:i d cw(9:t 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 positionjo/ d3h ob0. t,0nutsgs: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC0g03ts d/,b.o ojh tun 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 cen34oibnavuz,,vz: (e gter 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 n3bzeio vg zv:,(,a4uacts 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 nCqu:l hd ngw/*n;z :h)k is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the d : z:; ugn/hwkhl*)qnmagnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -m f oo+1y04 wczvkl,g/ /tq0ll1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whatf+/kwvm4y t 0l,/z0lo q c1ogl is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC ar :zttum,id9h1enp,,t e placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic9, nu e:,,iz1hptmt dt force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whatxhb)d zy5:mv : point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic fo5y: :)mhbxdvzrce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4ntiuoia 8. w5n8u(ww3uaryd 9zg2v; 9 o1x;oz.0 m. Where on the x-axis can a tz ( xwn u.z5t1u9w2goi3 98va y8;odriwuano; hird charge be placed so the net force on it is zero?

  Charge +2q is placed at 3npj ) u l:wc),7hxdb35hbkc (.babrnthe origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it i:3c jb3c dbn)5bbh, 7xn(uar .l)wphks zero?

  A copper penny has a m,;e x;htsvy, r.llu :nass 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 attraction of a7-gm mb)lf e6tj1dh3 l fixed proton some distance above it. How far above the electron is the e l)g -m63dth1mlb7f jproton?

  Two 0.20-g metal spheres arey;k, kv2)py k0,h 8du ft .pmyqs;ubt, hung from a common point by nonconducting threads which are 30 cm long. y dky8u tspbph,,v .m,)ft;kqu;0 y2k 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 +40ui-gezw *jxfp 2 5c(3ye. What is the magnitude of the electric field at a distance of 1.0 m from the nuclej2wgxpf*3( 5-cu ez iyus?

  What are the magnitude and direction of cctg9+.g yfg 1(+cka v,fs ;emthe electric field at a distance of 1.50 m from a 50.0-( t.vsf 1gcecka+c9+, fm;ygg nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thfho(( / 0 zjiaghuk:a)e electric fielfa 0ak /uhi)hz g(:(ojd at the location of the test charge?

  A 5.0-C charge is 10 m from a sgigu6ex4e5 8(zxip;afmw 3d 4mall test charge. What is the direction of the electric fieldx3m ee685azd(w gipxf4i; gu4?

  A 5.0-C charge is 10 m from a small t1xwax) g1hyr 2est charge. What is the magnitude of the force ex gx12xhry) wa1perienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a vqh/2u98ux *w(zsv , nczrz lh7alue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the z9wzu*7rlzc/n (xhuq, 2sv8htwo charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick kp13ja41r *jc wrem.b and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fielk cj *er3p m141rbj.wad 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 mC chaq0cj0 u*(zqmorge is placed at the 50 cm mark. At what point on a line joining the two charges is z0o(*cujmq0q the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x ,:uncqa+7j 6 ar4hjew1afg+j = 0.20 m. What is the magnitude of the electric field at the point mu,aw+4: 7q1ejh6cj+a r njafgidway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 j2d1vp74 + (jfo uk(guzekn 0wm. The last corner is occupied by a -3.0 mC charge. Find the electric field at the centupw0+ gdu j7f2 (e (4z1jnkokver of the square.

  Consider a square which is 1.0 m on a side. Charges are plach4 t y6(svxjdi1c-bt7ed 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 mag1dt(sitbyc4 j hxv76-nitude of the electric field at the square's center?

  A force of 10 N acts (h4 h,ih:oamz,rd hg3on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of thi,h(hzhh: roaid3 ,m4gs electric field?

  A particle with a char3;/sybdgh ;wt1t ;d ymp2zdq,ge 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 elect m(c3:ntb8xfhric field of 6000 N/C pointing downward. What charge must be pc bn8x t3(hmf:laced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of /,v+bxh :2d1iw : qapkxqa4on -2.00 nC. The ball is placed inside d2 ixkq b:ox1w:4qvan , pha/+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 charge of +2.0 mC. What is; ltl 8r29pxs kic6)uk the magnitude of the electric f 2lk8tl psk)r9uix6;cield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 1c jfdx 7jdyd9,i3f5u cm carries a charge of 3.0 mC. What is the electric field 6.0 cm fromf9 duxi3yc1j,d5 d f7j the center of the sphere?