State the law of conservaty7dm, vh4l ) qmthlr+:ion of electric charge.

  Is it possible for two negative charges to attract ean / f5+nc1uv;pmut 2mbch other?

  Is it possible for a positive and a negative charge to -((lw*t80f gxe) u mn( ybrtceattract each other?

  A glass rod is rubbed with a piece of silk.kv9m 8u3 vab:; cqhvgqdqpphe.l* mf*f)8:c 3 During the process the glass rod acquires a positive chaufmfd3:kqplhv8c v** 93):8cbqm .qegvah p;rge and the silk

  A proton carries a

  The model of the atom o2o);uv 2sff ;drc)onp9;x4 jv. r noqshows a

  A neutral atom always hainj0g mk(q. 2,,ulw52z a1g aequxr+ hs

  An atom has more elect6/4m r8v,y50u nn gbjul4ew.kn 0wnwjbz:a,i rons than protons. The atom is

  Materials in which th, l6ze2p5o8h y x(etm w-t9wwee electrons are bound very tightly to the nuclei are referred towtyh 6t25e-w zwe9lo xp8,m(e as

  Materials in which the electrons are bound very n)uzhag dl3x9-y;w) p loosely to the nuclei and can move about freely withi )dunz)-xy9lh g p3a;wn the material are referred to as

  A negatively charged rod is brought near one end of an u;qgpvs+eh7(ibgh9r0kh v / )qncharged metal bar. The end of the metal bar farthest from the charg bvhih90+kq pv7; /s)hrg(eqged rod will be charged

  Sphere A carries a net positive charge, and sphesb55ropjw 5) bre B is neutral. They are placed near each other on an insulated table. wjs5p)bbo 5r5 Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elek18rwolyimz k28 ; oz9ctroscope positively?

  An originally neutral electroscope is briefly touched with a positive 5 kuow(hn28jcly charged glass ro hk8j5w n2(cuod. The electroscope

  An originally neutral electroscope is gl a y(e(;u d,/sl;mldsrounded briefly while a positively charged glass rod yl m/;(s uea(;lsddl, is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separ +nren o5u t d/u9/bq ;5elhq3,+obganate. Then a negative object is brought near the electroscope, but does not touch it. Wha/l+qnbah;5ee +gr ,dbuu n t3/5qo n9ot happens to the leaves?

  A large negatively c6 f bm*s 3v k5yr3-4ies4xumj l6 fbjz53g+gslharged object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metal5*vf ekl4 s6f-jgi r xg3 3+ lmsby5m4bzj3su6lic 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 c3p9lvgn +-6ytaa k2 pronstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a mfa0w wux* b xmfw;10kp/+;cg distance d. The first charge is larger in magnitude xmf kw/*x;00+amu;pcw1 bgfw than the second charge.

  Sphere A carries a net charge and sphere Bzifhzt v6 d /8.6h;juz is neutral. They are placed near each other on an insulated tablev/u z;djf. i8hz6zh 6t. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certa:: 4 l )blfi5bmvsq.lgin force. If the charges on both objects are doubled:l)4:f imvs.lbb glq5 with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual h67+4me yqj tnattractive forces of F on each other. If the charges arnem 4+hyqj67te separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. 7te0heg nv jbbde3(58u x.s4t What happens 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? The force h7 exe5(.04njb ue vs3dttg8bis now equal to

  An electron and a proton are separated byn8a.d0;actrg1 et/hr a distance of 1.0 m. What happens to the magnitude of the force on 0rt;a /ncda tr1egh8. the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 14:cex td nk0zu oi(65t.0 m. What happens to the magnitude of the force on the first electron if a second 0 tc(un6: zo kxi5tde4electron is placed next to the proton?

  An electron and a proton are m+6g4 ;y8:uamqf: 1 irowdy p;h7(d ujeni;jvseparated by a distance of 1.0 m. What happens to the size of the force on the prot:vyfdjq6ru (p a 8;ij y;mo+7gi; m1eudhwn4: on if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a secondveuhn, + )vuxqye95 8s 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 electr8h 5vn9e)uvx, q+eysuostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an5v e1zdr+e2w1 f gt-px equilateral triangle. When a second charge of +Q is placed at one of the trt+5-zxd2rfep1 w1g ev iangle'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 )q+*nh lxih u.vector?

  At twice the distance from a point chargerft-mqxa g2e/2m0-f l)ys i)a , the strength of the electric field

  Is it possible to have a zero electric field value betwma+* q0kc m39vlaaro4;1:rym3 27jrb clzalyeen a negative and positive c3174m;q*rm aa:y 3j+ r9ayzlcl r2la0m kvobcharge along the line joining the two charges?

  Is it possible to have a zero electric field value bj hi+l v.bexx+m8 lmssu1).j/etween two positive charges along the linej l mxmxb1h+ul vs+je)..s8i/ joining the two charges?

  Electric field lines near psitive pv;r/lwq:gnh4) dhu s4oint charges

  The electric field sdypn+q:to pd1 /co46shown

  Can electric field lines intersecby,d+14( uz(unh gmvvt in free space?

  A solid block of metal in electroso 78 bm:/aud:,udj eex-g(zl otatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric fie7 agox-old j8/ me(uedz, u:b:ld in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameterslbsx0s kuf7c(ty 37p : are each given the same charge, the electric field (E) midway between the center and the surfacc y7xp:l3sskb tu f(70e is

  A cubic block of aluminum rests on a wooden table in a region where a uniqv3rw oe u x/hb;lf35fb34xgb7x . s)vform electric field is directed straight upward. What can be said concerning the charge on the bloc4f gb;xurve3x)b wvo53l.b 7 h/s3fxq k's top surface?

  If a conductor is in electrostatic equilibrium near an elesg)i0v(quih d;45w sectric charge

  A positive point charge in +,fw)cccv7h s enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hol vc n)w+7c,cfhlow sphere has

State three properties of conductors in static equilibrium.pbu 9) 5vvu)rw

State Gauss's law.

  The charge carried by one electtvz5vtp)6 sdg v* a55dron 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 +2.0l;-ylei7jt/n6nkzn qsa/ 85 k0 mC. How many more protons than electrons does thik6ln/k5ns z/jt ; -7lea8 yqins piece of plastic have?

  What is the charge on 1 kg5 fxo:bvr01 kjzny8 :y of protons?

  An atomic nucleus has a charge of d*6gfc /o(rl; oj3bji $+40e$. 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 (hl;khr (m8 5.lqp dhtcharge values of 2.0 and -4.0 mC, reh r( ll;phmq8d5.(htkspectively. 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 betweu*tg1*baz1ody0lm dk w)/0 nc0mq/ 8c:jmsv qen them is 1.0 N. What is the magnitude of the second c0 *wksu dbdgztcayo1m 8q)cvm* 0m:/1jqn0l / harge?

  Two 1.0-C charges had8tnas3) q //fh*)i v,hz wecyve a force between them of 1.0 N. How far apart are they?

  The force between a o7hy lg,l1e+k$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.b:/soni oin 050 cm apart, experience a 1.0-N force. If they are moved tsiobi nn :5o/0o 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 ch d -l(hsk n;fvqw-b;n2arge is at the origin, the second to the right at x = 50 cm, and the third is at -blns2n(v-hdw k ;f;qthe 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. A charge of +2.0 mC is pl7qmk 8n7, gk mt4yay9gaced at the origin, -2.0 m C to the right at x = 50 cm, and +4.0n t ,9mkm ygyq7478gak 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 mmm 5rjgyq1.fft9u, tji 4(t2vC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3fyjtr1(m4.q5t9,u2 vj m if tg.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a sump+fq0bdbex ruzme j)6 g 7y/v2-w13 econd 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 placedveub j3qu 2bwge1yf06x+rm p)z-/7m d at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0xa rp8y .wxg,1.10 m); Q3 = 5.0 nC is at8 gwr.,xax 1py (0, 0). What 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,ck(1 (5vexsav3m3t q a 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.ec3( (t5 a31vkxqs mav0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an eq zr6a8q svo0k y-8l4yduilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic fdl8o0srzqy ya6v 8-4 korce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separa5w ab es /p+mpou5odsief1,46 ted by 3.0 m. At what point, on a line between the two charges, would it be posbiau w4epo6 d1sme+ /5f,5osp sible 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 = 4o q j6mb9/h:64sgim4um e9 rmkpvy7(z.0 m. Where on the x-axis can a third charge be placed so the net force on it is zero?6 q6 py jug7kmbims9m:(rehz4m/4v9o

  Charge +2q is placed at the origin and chargedhz6ec*ybw l8) pg-s/ -q is placed at x = 2a. Where can a third positive charge +q be placed so that the fwb 6* -pdlh) 8/cyzesgorce on it is zero?

  A copper penny has a msc6t08 oaghbi: p1c*k ass 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 attrafrb 2q.yv8)59odolw zction of a fixed prv89r5ly qw).obd2z fo oton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by n2s6eqxm rh08aonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion f2mhrq x 6es08aorces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a chargek.b8 3wkxnro 8wxs me4id) x(9 of +40e. What is the magnitude of the electric field at a distance of 1.0 m from theeww (krn4d)x3 b.8io8ms9 xxk nucleus?

  What are the magnitude and direction of the electric fil cxi ru8o57)reld at a distance of 1.50 m from a 50.0-nC cha5c8ruorx 7)i lrge?

  A 5.0-C charge is 10 m fromen3bq src8y y .2zz vslp*97k1 a small test charge. What is the magnitude of the electric field c2q9elpybynk18s *.7zzv3 rs at the location of the test charge?

  A 5.0-C charge is 10fjdi;ir( xc (wvs;j8.us 9as2 m from a small test charge. What is the direction of the er .sw;adj iifuj2c8vs ;(( s9xlectric field?

  A 5.0-C charge is 10 m from a small test ctx4fbyrl7 +q*harge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of th7+t lxybf 4*qre test charge?

  Two point charges each have a value of 3.0 C and are separated by a distang:rz 168zgmvece of 4.0 m. What is the electric field at a point midway betwevz16zm grg8e:en the two charges?

  A 5.0-mC charge is placed at the 0p/8i(3da:zfw o -c kov cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field atpdza/-iow(fc3 v 8:ko the 30 cm mark?

  A 5.0-mC charge is pla 96grwoq0x5:w wuj zu+ *cw.laced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Atw60:9wu.ujcww5x q agro*zl+ what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC a r2v4lgv5xus kyn:3p y0sgja 9hg3-*ore placed at x = 0 and x = 0.20 m. What is the magnitude of the electrixsp3oy9*nv gljh4rga k3u5s v0g2:y-c field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m.g*3 fyw4 euheho6 -km+ The last corner is occupied by a -3.0 mC charge. Find the elechege+o- y3*mwf k6u4htric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the ;nfmvtv*g1c1 7-amqx corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1cxn*t1magvfmv1q-7 ; ); +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 )w +yv s/stbhqv+a4tj*;d d(wof 5.0 mC when it is placed in a uniform electric field. What is the magnvw/+s)ayd t b(qs+4vhdt ;j*witude of this electric field?

  A particle with a charge of 4.0 mC has a mas392 xhgh e*z)l6zu(-qr h qqzg*q ge0ss 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 field of 6000 N/Cq1y h:w3;s3ux0 bipezpr i. k8 pointing downward. What charge must be placed on the ba kw30 y.8qurp3:1;ipzsxie bhll for it to be suspended?

  A foam ball of mass 0.150 dqfl nj( c*u*4g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the *lj(uf 4cdq* nforce of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radiuo((w 5kajpgx6s 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric fieloj(g6pk5 w (xad 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carri) n- wur:ntk1aes a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphe au)rn: t-k1nwre?