State the law of conservation of electric cha1 vj i4/qn)lzwrge.

  Is it possible for two negative charg e: abj)q 5zg.0ohqfw3es to attract each other?

  Is it possible for a positive and a negative j lyv d8f l-,u3bb2xq/charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod 4ny8e1i x1adj +miakdsi2i .* acquiresi . n 1s aj2dm4*kd81ia+yiexi a positive charge and the silk

  A proton carries a

  The model of the atomz4ep am+f/f t*rniu pa 06/.hi shows a

  A neutral atom alway+qu6w 9cphiax mv2v:5 r kr2kzs:uw9*s has

  An atom has more electrons thj fw2s8gp m+9ban protons. The atom is

  Materials in which the electrons are deie)a8:98ri xxiam-bound very tightly to the nuclei are referrmeii xai :8e d-x9)a8red to as

  Materials in which the electroneipv)wjq:12rvn pa+(.yid)z s are bound very loosely to the nuclei and can move about frez1(i:yn a evr w)p).2pj+diqvely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal t 1wa8r;ja(9z x w+tetbar. The end of the metal bar farthest from the charged rod will be chza;je9 wrt1t(+tx wa8 arged

  Sphere A carries a net positive chargeh-pdj 8)e wnmup my9 r(8s5s/r, and sphere B is neutral. They are placed near each other on an insulated table. Spy8mw5rs) j(s-/m 8pe dpur9hnhere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charwl w( 12)xlnuyged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positr3snet9suj g ts.+; :hively charged gla t: 3nj9.es+rss utgh;ss rod. The electroscope

  An originally neutral electroscope is grounded briefly while a posi i,bptseh7o, *tively charged glass rod 7pith s, ,ob*eis held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the4wj okbb2oy 4; leaves separate. Then a negative objej ;4bwokyo42 bct is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object7fb jnr3ih 8 1*0ceuct is placed on an insulated table. A neutral metallic ball rolls straight towu0*3rj1cehtf7i8n b c ard 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. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb ciu4h6s2-p ir*u m:mo bonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chari)2-i; 9pi xh/*fyvxyt.jud *4pe bgjge is larger in magnitude than the second cha . hjf9-;d/ti)v xugy*4e 2 ijpb*pixyrge.

  Sphere A carries a net charge an csr5s gp7(ay1d sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes th( 1s5g7rp yscae electrostatic force between them?

  Two charged objects attract ej0t 0 oe6uag*lach other with a certain force. If the charges on both objects are doubled with no chang06jet*0 ul gaoe in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive f :xup5.gno 0)vun re,eorces of F on each other. If the :e 0)r vu,unog.pnx 5echarges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each oth3 )m ltzi0afvc(q6fz1er with a force F. What happens to the force between them if one charge is doubled,3fi6 tv zqm al0z)(1cf 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 disz8ul (:.jsgbsjq- b7 3-z gvnkvat0 6jtance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is plagvslvkj a z(0.tu-z b- sq73:b68jgnjced next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wha6 iod v8/v9nnp,0j fnjt happens to the magnitude of the force on the first electron if a second electron is plv,f/injn8on 6 jd09vp aced next to the proton?

  An electron and a proton are separated by a distance of 1.00 m(8 u6vswpnt m. What happens to the size of the force onu86 pwvtms(0 n the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at thpev8.fo ud/ycl6f3 c7e center 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 elyc f7 lcpdov86e/ u.f3ectrostatic 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 fugl63n i k gp2ujqa1pp4l*p-y01sl6 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 centl 0s upgpy- 1up4i*l13jn6p l26f qgaker charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is nom3tj+g 4( hlftt a vector?

  At twice the distance from a point charge, the strength of the electric9( 2ajvw*a;2jpxgokh field

  Is it possible to have a zero electric h0z b::yk kfwz15 .s sf-e *nekifre5*field value between a negative and positive charge along the line joining the two zf5:*-*e rkfyzis: f we5e1ksh b.n0k charges?

  Is it possible to have a zero electric fielwa20 h sb5n ooe9k-0rvd value between two positive charges along the line joining wbos h0ae5- no 0v92krthe two charges?

  Electric field lines nead.4zim e4p9p+g:okti )r 6 k 3xmpx5lor psitive point charges

  The electric field sh tjo (-hkv9nu/5m -ftxbz./p jown

  Can electric field lines i.bv,wc,o0+ u ge0i*cphe5k s rntersect in free space?

  A solid block of metal in electrostat/gfl(j g jv339wk3o ozic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the bgj3w(klv/9z 33oj fgo lock's interior.

  If a solid metal sphere ux o5qd;,lloi+b(r *band a hollow metal sphere of equal diameters are each given the same charge, the ell;b*, dx b+q (iruo5loectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wher 8 /wd h oizi 8ejm)qv+:mh.hcd)d.il3e a uniform electric field is directed straight upward. dcm od)3)hld/: 8 .hqmi+ehviw 8.j izWhat can be said concerning the charge on the block's top surface?

  If a conductor is in electrob/q8o ih: e;dsg1vn3z static equilibrium near an electric charge

  A positive point charge is enclosed in a hollgfp+8 ,g 5v 0ph2(cdzt lqozit frt,(2ow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly,r5g zz+tlf 0th 8diq,((t22cpvogpf above the hollow sphere has

State three properties of c(o 84vx.mm *apr ksk3yonductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron -mqg* qxm4b5fjh j2 n,hlc8hho5 aejz1 /i*5xis $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net chargew ion83b *x/flko5pq 1 of +2.00 mC. How many more protons than electrons does toxpwoqikn 8/1bl5 *3fhis piece of plastic have?

  What is the charge on6 rz-hn8sh t q*o* x5ukukg/r/ryf27 z 1 kg of protons?

  An atomic nucleus has a charge ofw0uq :jehu0/qte k )2a kqa;;f $+40e$. 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(7i: l(acp0yn l, wqvm(ny,px values of 2.0 and -4.0 mC, resp,c l7na(pw(m(npiy yx,l0 : vqectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 Nfxv- rg9 s 2,hdoa40ps. What is the magnitude of the secondoa xg2-sd9hps0 ,v4fr charge?

  Two 1.0-C charges have a force between them of 1.0 N. 6ozu/i 3g0bbw ,pp :/i ckt fv3.4uixaHow far apart are they?

  The force between a ey )nz4 jd,,ez$30 \; mC$ 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. zxjg,w ;2 pxu; 6ge;oggpb(g;If they are movg 6; gpz;oepgg;u bj,wg(xx2;ed to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges o+ if(p7bh6jgs f 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 the third is at the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at thsg6j7if + h(pbe origin?

  Three point charges are placed lw ll;ww2-8;yyq9c wq on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50ql;y2 yl8w ql ;w9c-ww 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 positions: Q1 = 2.00 mC at x s 5au:+ xqzoy9= 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = o59zy uq:a +sx-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 cen*dj3pcx9sy2dqh f x. w2ia(h; )ytg.ster 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 Np3.d;cw j x)2s .qdy(2xsiy g*afhh9t 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 = 5.0 nC i 8-esjx kn0sgsgb- i0 )mr(uc:s at (0, 0). What is the magnitude of the net forc0g:) ujgsis0mne8-c krs -b (xe on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is n2:rudf u iqb 4j+o-6 j/tjp;yat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directu2j+qr 4yj;du f b:6o-pj/intion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equi 3edal/cx 09(5deatanlateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which/eda0x tlda e3na5c9( acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wrxhka1j (s./)pyxhuka*rm vs 145 sj.hat point, on a line between the two chp h4x*r1(kh j/s.maja1y.)ksvrs 5 xuarges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at )*7wopaww ,lrob87c xthe origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on ito8 lxw)a,wwc *rbop77 is zero?

  Charge +2q is placed at the origin7em4en yrn/9p246b qts w- iys and charge -q is placed at x = 2a. Where can a third positive charge +q be placed we9n y7bp -sysi rq 46mn4e2t/so that the force on it is zero?

  A copper penny has a mass ofaj m7u-*wsbati5oz7v -2d9o p 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 tgb 2.cfw0txqv wg jp j23n1r: 2e.qb-nhe force of gravity by the attraction of a fixed proton some distance abe q.xc -:wvbnqj b1t2wjf02r2 .gnp3gove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung f j ).ptfzsd, 6;sa(agmrom a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them a(m6a z ;)t js.s,pdgfapart 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 the magnitqo 0jl c)/lsweqq9e83ude of the electric field at a9 8/ejllsecq oq)q3w 0 distance of 1.0 m from the nucleus?

  What are the magnitude and diiq(-lxn 3hpt ;rection of the electric field at a distance of 1.50 m from a ;lpih(x3- nqt50.0-nC charge?

  A 5.0-C charge is 10 m from d++ vmzlyt76k a small test charge. What is the magnitude of the el+67ztymlkv +d ectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directiig)a6 s;+ mv5mbgud.jon of the electric fiea.gb msmd u6+jg)i ;v5ld?

  A 5.0-C charge is 10 m from a smal- 78oehokce4f l test charge. What is the magnitude of the force experienced by a 1.0 nC cheokc 74-8ohf earge placed at the location of the test charge?

  Two point charges each have ioj(2zts89e tx2)c vsr t/u-ka value of 3.0 C and are separated by a distance of 4.0 m. What is the electric fiel ir (sek ts2zxv8ott9uc-/2)jd at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 o ,(k;y +owph)fp0u hgmC charge is placed at the 50 cm mark. What is the electric field 0hkhp)(;fwo yug ,+opat the 30 cm mark?

  A 5.0-mC charge is placed at th9cc3; vag poi0sboqxv -9k3/ue 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the pb-av uc9;i0qso33kg x/ov9c two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x qtv*r-l(nj q:f/gio 9= 0 and x = 0.20 m. What is the magnitude of the electric field at the pitrq vn qg/(fo *l:9j-oint midway between them?

  Three 3.0 mC charges are at the three 7y 7b1km quqo sco:7,kcorners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fieyqo:kqb1 7cum7 s 7ok,ld at the center of the square.

  Consider a square which t.lcomdsm :gp;+) 8xnt8 wq r0af0ag1is 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.grcam;tt88a o qpg dm 0nf:.l+wx )0s10 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 lyg6 )sutqz)3on a charge of 5.0 mC when it is placed in a uniform electric field. What is the l)6suyq gzt )3magnitude of this electric field?

  A particle with a charge of - o7yrjxc05e m 0lhndd-oq5b0 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 isy ed9jls;pl kb0xn 7/) placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspend9) blkl/s7 ;ynxe0pj ded?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed in kxwx4; 3gqe2iside a uniform electric field, and is suspended against the force of griw4 ;gxk32xeq avity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whu *kq40wq -svot*cg*uat is the magnitude of the electric field 5.0 cm from the sphe*q* 4uovu-0qs cw ktg*re's surface?

  A metal sphere of radius 2.0 cm carrwpr t;j./-fyaha)z / tc-jd1iies a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the spherfw y;i 1ha.-zjdt/pc /) jr-ate?