State the law of conservation of electric charobpxh 8:sx( *lge.

  Is it possible for two negative charges to attract eachf ui:i.w 59diy other?

  Is it possible for a positive and a negative charge to attr)xu 4eez yi8sa g:vjr*j(7wncd+-ab7act each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod acgue9e 9 /dso44+tv aiay +uw(yqy4oe7e gaz*/quires a positive charge and the sa* e9yedwsu9q+ yga e(v/uze7g+4 o44atyio/ilk

  A proton carries a

  The model of the atom shows k8ks35+ b)fze fg3ccda

  A neutral atom always halz84i p sg0b( i/zx2fjs

  An atom has more electrons than protons. Thept/(bpyo w 4o: atom is

  Materials in which the electrons are bound very tightly to c,fuk (/ckr e; 1(nu8y;wwbzhthe nuclei are referred t,y(;/;8cb uc ukr(hne1f zwkw o as

  Materials in which the electrons are bou4- 5r7mvk8erq-lp8ocjko)y nnd very loosely to the nuclei and can move about frcrlyo p8-5-qekkj7o 4)mn v 8reely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged mn f+9ukhe*.e hc0x)6.jx s 9erhuucr(etal bar. The end of the metal bar farthest from txcc6e.jhex kh+ ue9u frh. s*) r0nu9(he charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutraln i4. m( jueeb408qyal. They are placed near each other on an ins0( ab ujmn 4lye.i48qeulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negativelye b2 3:ram2 6ol0mi1tnna u6sb charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched withsxs-e2 o9nu(c a positively charged glass rod. x-c9 u2ose(ns The electroscope

  An originally neutral electrosco3 pnxmt :pb)wu+qk 6v6b)j7dppe is grounded briefly while a positively charged glp t6u+3)bwpjv)nx 7d kp:bm6qass rod is held near it. After the glass rod is removed, the electroscope

  A positive object toucmkvuskdd:367+/ y/))k3hazpuv ewk uhes a neutral electroscope, and the leaves separate. Then a negative obskk/6+zhkpm3ue 7ku/ wvd avyu3) )d:ject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged o;52 aq :v j,bn2gog(yyomdt8xbv9q)xbject 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 stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative object. 8xv9o obxj)b2qmvay :5dn, g; yt2qg(What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constan8 cn0 f2nuppb6t $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fir jw6ce/ *g5zaast charge is larger in magnitude than th*zagca/6j 5wee second charge.

  Sphere A carries a net m4qm:c :xpyinpyu)nxl : j +7,charge and sphere B is neutral. They are placed near each other on a:ly+7u :xni pmn,mjx4:cqp )yn insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other wi74s l(dnlo+dg,m bm, qth a certain force. If the charges on both objects are doubled with no change in separagmsb(4lm+ ol d7dn ,,qtion, the force between them

  Two charges are separated by a distance d and exertrh ; ;b; nmd,zpp6.hvl mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, rlb. ;pzpmvh, ;;hn6dwhat are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the fo,vg/7 f d; bgxbof*o .g qd:m2sw*rcf4rce betweenofw bs mo,g: /gdc2r f4;bdq7xf*.vg* 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? The force is now equal to

  An electron and a proton are separated by0cg:5x0z5yn/ 37 4f cezrvsj(or mwet a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first eleer:oern4z5 mgt xzs5 v y0(3w/ccf70jctron?

  An electron and a proton are separated by a distance of 1.0 m. What happens,yf2ibi99(wrkl ci4 m to the magnitude of the force on the first electron if a second electron is placed next to the prot2 lim9i9 kfry(4 bc,wion?

  An electron and a proton are separated h ehgjhh 5r;r.y)3z5..wwag pby a distance of 1.0 m. What happens to the size of the force on the w. ;rhg5aw..e5hh3r pg)zjhyproton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the cent 80pjyc cm24yo -p,skper 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 jy pc kscm,0y 2o48pp-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 y2,caljsoy,per - 15tof 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 the center charge due to a third charge of +Q placed at ony2crl5jeps1y,, a-o te of the other vertices?

  Which of the following is not a vectorc fj:2t,lh vxt c(w(yn49m2 eq?

  At twice the distance from a point charge, the strengthc2-r f5m 9w9 :j,33 1fgcmymz ffpwlph of the electric field

  Is it possible to have a zero electric fizeya t*rk*(mgr(htzz 3 6y/d0eld value between a negative and positive charge along the line joining the two chazd(*6t* 3ka0y zrh z(eytmrg/rges?

  Is it possible to have a zero electric field value betweegln+cr,dpz; -u1ay *vu,we gk8p)pt,n two positive charges along the line joining the two chargp,luuk;yraz +* epgt 1w cg,d)n,p8v-es?

  Electric field lines near psitive )w/2le1cgev xpoint charges

  The electric field sho4cuuu; zr401gj tuc mw1f6vy5wn

  Can electric field lines intersigqn a;7 ,xfxn3c1v2hc65 pyyect in free space?

  A solid block of metal in electrostatic equilibrium is placed ini5x fxdfd7o0lf208 r4e 3sj pi a uniform electric field. Give a statemenof fex3f4 08 slxd07iip j2rd5t concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are e+9q2 ripf bc*b-2gle yach given the same charge, tbg2il9 -fq+* pb2re yche electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden rx11enxe l4 /rtable in a region where a uniform electric field is directed straight upward. What can be said concerning the e41l/rer 1 nxxcharge on the block's top surface?

  If a conductor is in electrostatic equilibrnnk h-)+nsec0 ium near an electric charge

  A positive point charge is enclosed in a hollow z),qd8 tptxg /fu;azn1 9jj3ametallic sphere that is grounded. As compared to the case without the holl p) aza1ttjx8 39ngu,;/fjz qdow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibns y:o03x g+yzrium.

State Gauss's law.

  The charge carried by one electron i) m8uvj6w0r0 m l3qhye+sk0tds $e = -1.6 \times 10^{-19} \; C$. 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 me5fx8-6lb.(j+l jss y,mnjs aany more protons than electrons does this piece of plastic havsebs-6.(ja+ ys5m n, x ljjl8fe?

  What is the charge on 1 kg l m3p,.npc5xgof protons?

  An atomic nucleus has a c tcrlo+s:9 sy/harge 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 h5i8)ozr/o ch and -4.0 mC, respectively. What is the magnitude o)h8r izo co5h/f the electric force between them?

  A 1.0-C charge is 15 m from a second charge, ando x/ 5mw257y)yoxzm hd the force between them is 1.0 N. What ismyx)dxmo y55wo2h7/z the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N.0mg(jh ; gg 8y5fnup,z How far apart are they?

  The force between a c6/ q8ju op(2k 28ujhyle(kw c$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2. wuw c2ko. /fr9050lxe3ctrjv0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electricrxk0vjr3lc2etf .c0w /u 5w 9o force between them?

  Three identical point charges of 2.0 mC are placq fg5g/o448qpvu arm lk22x(fed 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. kpma foq2qv5gxr4/u 2f8( g4l 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 charge of +2.0 mhv9rj yoqb d0*nl.17uC 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 bho7ry1qnu9.0*jld vof the electrostatic force which acts on the charge at the origin?

  Three point charges are loca e3.srrxlgow ewvco jg5;(201 ted at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; 2g0rj(c rle5sv 1 ;oow.xw3e gQ3 = -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 sq owhp3 gejh5r+7yph39t1hil/uare, 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 3li5hg y9/e 7to3w+ rj1hhpph 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 nC4 vqq/cao9k 6fikav+b k)2rva(y ;st: is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wqsqk)92bkv6vioyr aa+ :vt a (/;f4ckhat is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);m68 az9 5e1v 0t7xup.hh2+pgr tjny;fe ,zdth Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What h1tg.2;z7 ea6vr580j ,9 mttd+npyzufhxhe p is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pli1t syc(/yc;hmkn m so/2k, m8aced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of thm/k(c ,2smicy;hmn t o/ s1k8ye charges?

  Consider point charges of +Q and +4Q, which are separ2vu j klsar4mr,88o8vated by 3.0 m. At what point, on a line between the two charges, would it be r 8ra,ov2l88u vsmjk4possible to place 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 x = 4.0 m. Where ofo1.fwzq2qb+ijev ,8*bc 1 4.3 mjn mq(lvcvtn the x-axis can a third charge be placed so the net force on it is zernz(+ qfb3 ,14.j1qmf 8v2mqcict elobv*wv . jo?

  Charge +2q is placed at the origin and charge -q is plac5 )mg+.8x0f: s7egrb zrttye5:nf hy.eac6z x ed at x = 2a. Where can a third positive charge +exrg hsb .0z :nrc yf7:+g.6eez5y 5tt8)axmfq be placed so that the force on it is zero?

  A copper penny has a.mavkx *a:4 qz mass 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 e6d*a sbnu(wn29wnpyu 8 m75hby the attraction of a fixed proton some distance above it. How far above the elechdwa5ye 8p(7sn um w*u9 b2n6ntron is the proton?

  Two 0.20-g metal spheres ar lofwl2je*6ls m;m59-w8n pjde hung from a common point by nonconducting threads which awl2;w586lsjmf-* pj9don e mlre 30 cm long. 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 char1mso1 cb2mzrn u7ap9wc2ww6 8 8g:bbr ge of +40e. What is the magnitude of the electric field at a distance of 1.0 c2g1b un19pm6:rz mb2wb r woa87sw c8m from the nucleus?

  What are the magnitude and0 m1 v;hexyuaz)2e l*a direction of the electric field at a distance of 1.50 m from a 50.0-nC chargeu;ea)20*a v l1ymxhe z?

  A 5.0-C charge is 10 m from a small test charge. What is the magnit) on+kgg c.jg1rdk/hij s 9:3wy.ubo2ude of the electwuk :i.gbj)h j2gd/3r+cso n1gy.9 o kric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of . :s6hbljkx s5the elech: l5skx 6sjb.tric field?

  A 5.0-C charge is 10 m from a small test charge. hcu3 f )hwg(d:mm +oz* What is the magnitude of the force experienced by a 1.0 nC chahd*o: gm fm(cwu)3+hzrge placed at the location of the test charge?

  Two point charges each have a valuepy5n4 v w-:slmidsf x7,k 8c36l cdu u/p8c1ia 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 two chwvdcd 8 lkac i/ :u1ic,-7l 8pmsynf6sp3 x5u4arges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a 5w4xjt:fto b+-4.0 mC charge is placed at the 5jtw5f4x b+ot: 0 cm mark. What is the electric 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 mC chargefme ;x-lwxo w0xo57*l is placed at the 50 cm mark. At what point on a l -o xwl0* x7f5e;lwxmoine joining the two charges is the electric field zero?

  Two point charges of +3.0 m *-v6m rzfuhw,q+oqfl+ ;e7suC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point mir7u +-*w f;e+v mfhz,uqos q6ldway between them?

  Three 3.0 mC charges9cuz;uqe zs/szf* k/3 are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric sz9qu */ z3sfe/ukcz; field at the center of the square.

  Consider a square whic4(m;f6ysi)ilzlkokn4d (4(nlcj 0 dqh is 1.0 m on a 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); -3.0 mC at (0, 1). What is the magnitude of the0 j 4ikzoif) (ld(nkl;c ds4q(lnmy64 electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when:(4lp8rwj / yv;fhc4i qm6gxc1u7xy h it is placed in a uniform electric field. What is the magnitude i cjyw4/6cqr vhx 8(f 7;u: 1x4pmgylhof this electric field?

  A particle with a charge of 4.0 mC hl.) f tbt(a1ghas 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 5xqv46 uoqv (j2 wjy3pfield of 6000 N/C pointing downward. What charge must be placed o yj4w 6q(vv35qu2x jopn the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ballxrxy 8n5d*1rkt3nh*t w9d9 u o is placed inside a uniform electric f 8r hokn d9nx153ry*9* dttuxwield, 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 tht,zunsn3iv ; /e magnitude of thv3 /n,sz;tuni e electric field 5.0 cm from the sphere's surface?

  A metal sphere of radu3 d6movnvl4)ius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphe 3d) nvuovml64re?