State the law of conseqsmj159it) e ,,b xkjqrvation of electric charge.

  Is it possible for two negatilv3+ljje:i 9 jve charges to attract each other?

  Is it possible for a positive and a negative *mdp;pms4ntu6 f/zbj x: ts yxar8839charge to attract each other?

  A glass rod is rubbed k2(bo(tcs 3wjnfw2)z with a piece of silk. During the process the glass rod acquires a posit)sbzjwft3(nwcko 22(ive charge and the silk

  A proton carries a

  The model of the atom sho 3lhzspkj o5u9-a60h4z vo;ckws a

  A neutral atom always 5vwvl87 f(ighhas

  An atom has more electron.i;qrv8gdd++r ef au, s than protons. The atom is

  Materials in which the electrons are bound veo:+-l0snzy 9p a4j2 lhjljvq-ry tightly to the nuclei are referred to aszvollj +q9 j0hsjyl-a: p -n24

  Materials in which the electrons are bound very loosely to the nuclei and can mp5)puw 6 z+nzu cw6w 2kw.jq(xove about freelypj6zww(2x znwu) 65.w +pkucq within the material are referred to as

  A negatively charged rod is brought near one end of an uzcpa 2ib-9t 4ba ,o1vio 8c1g uxgup*(ncharged metal bar. The end of the metal bar farthest from the charged rod cga tx4p11*2 ioz ba vu-,u8c9o(ipgb will be charged

  Sphere A carries a net positive charge, and sphere B is u+gx fnyj7e 10w8.vrsneutral. They are placed near each other on an insulated table. Sphere B isu 0xjvsn7w+ryf81 .eg briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargel5we5+ 3gvnvmh48lr ml+3bxn7 hs5 mud rod charge an electroscope positively?

  An originally neutral electroscope zg0zrko2vsfnm x*i m6c/882 eis briefly touched with a positively charged glass rod. The electroscope*kzn80 ix ms2er6v/cz8o 2fg m

  An originally neutral electroscope is grounded briefly whi, fp/ *0aa 6wn i6*:nbaypkbcfle a positively charged glass rod is held near it. After the 0 a,b n *f faw6aki:p6nybp*/cglass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leav;jz 34a)tx h)qlzr.tees separate. Then a negative object is brought near the electroscope, but does not t)3;t ezl rh. ja)qx4tzouch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tablec9 n3v-lprrc( . 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 dp3 rc(v-l9c rnoes either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulo;zkr0 m*yb1 vqo;8b mrmb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge isw*om2kcn so83 larger in magnitude than thesoo n c8m2w3*k second charge.

  Sphere A carries a net charge and sphere B is neutral. They ae5v0z le n tr)wwe85t+re placed near each other on an insulated table. Which statement best describes the electrostaticz8evtt)0rw5l 5we +en force between them?

  Two charged objects attract each other with a certain forcezu( 0nj/.l7+ mf 7y*wen,tvx wpbxk,vfy17gj. If the charges on both objects are doubled with no change in separation, the force between tb /7x7znw .kgmpv*ufnvy+ ,f(107 lw,ytjjxehem

  Two charges are separated by a distance d -.-b (rp gzabmkj7j 8:j idft9or a-*vand exert mutual attractive forces of F on each otar7v :.-(a-jbk jj-o*mb8 ipd r tz9gfher. 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 fz9m-3.hjls sd:u xq4yorce F. What happens to the force between them if one charge is doh: sz xs d3j9q.-4ylmuubled, 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 ml).l:qd ieuqaqi p :08. What happens to the magnitude of the force on the protqeiaqq l8lpu:d :0.i)on 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. Whate:h0 tk0 m,;4kwbsded pskr .6 happens to the magnitude of the force on the first electron if a second electron is placed 0hem6 :0sd wkeptk 4srdk;b .,next to the proton?

  An electron and a proton are sef m d*iy1ewxou4nn06- parated by a distance of 1.0 m. What happens to the size of the force of4x16y* -udwn0m e onin the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Qkl. a2hn z(g2 pfr60lv is placed at the 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 electrostatic force acting on the positive charge0kf2pl6g r h.2a( znlv at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral pxgt 8j.bu6- 9m4kz h0bpplg(triangle. When a second charge of +Q is placedpg9 6(lpbkhx 8j .b-uzp40tgm 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 n+pb :w rn;6osui p2ap (b)egkp*sa7p 8ot a vector?

  At twice the distance from a point charge, the strjg) 55.3z7 iqni ty a3uv:qulhength of the electric field

  Is it possible to have a zero electric field value between a negative and pofp.pl-yg6dh o2q 9 vr2sitive charge along the line joining the tvplq 9g y2for2h d6.-pwo charges?

  Is it possible to have a zero electric field valudy j 2j3i: cg,,ywjl.ge between two positive charges along the line joining the two chaj,jl g ,idg2:wyy3j. crges?

  Electric field lines near psix(wr2g271p f) o jitahtive point charges

  The electric field sh8 cxg 5ig0a8qgown

  Can electric field lines intersect in f 5ph u)k spo0v*;kmjpb /4h;anree space?

  A solid block of metal in electrostatic equa) 8tyris,c0t1p 1beb1r ai6vilibrium is placed in a uniform electric field. Give a statement concernpey81r1s0 6tt)cbi vriba1, a ing the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equrm6 )-n8jq nb:abw+mdal diameters are each given the same charge, the electric field (E) midway between the center an mdr:wb+- q8)6j bmnand the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform (l akheni;h+ eb0/zg .electric field is directed straight upward. What can be sa(0 hznbai/;l h+ekge.id concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charge1tcbcx)s( ca1dgqg/ :

  A positive point charge is enclosed in a hollow metallic sphere that is groundja) szi-+p0t su5xxy )ed. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphe p5 x)-0i+z tjsysu)axre has

State three properties of coif xmp)0* 7mfy 6hx*;dnzwk*ygwj44 tnductors in static equilibrium.

State Gauss's law.

  The charge carried by one electqcu7 xsuf*n mkk9 ,(b4ron 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 og63 o g:swdc*1vx hn1jf +2.00 mC. How many more protons than electrons dds31cw1 vn jxg :hg6*ooes this piece of plastic have?

  What is the charge on 1 kg of protonsxhjc/ok4 3vt )jay av-iqb:34 ?

  An atomic nucleus has a chlp4mz)m-c ) qharge 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 valuem.o7, 7r ma 3blz k-+kg0mfovrhr(a :hs of 2.0 and -4.0 mC, respectively. What is the magnitu l aa0m(gh-z:khm+7mrv37for b k, o.rde of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is f2l*,gd.thd i 1dg9d-.npxb(e j4cmm 1.0 N. What is the magnitude of the second cham nh*xfdd tm9 (- gcgp ..b2lj4d,1iderge?

  Two 1.0-C charges have a force between them of 1.0 N. How f/+a+ks,hbg vts ex/n.ar apart are they?

  The force between a bd,5i,x8mf9ltuldo.sx neu*/ch 8 * j$30 \; mC$ 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 forc drx14ve ym 2-auiny8-pe*z+ce. If they are moved to a new separation of 8.0 cm, what is the electric e1c+ i-v24 zydux 8rmp-en*yaforce between them?

  Three identical point charges of 2.0 mC are placed on th 0 w/tw jw7/mo:mazx0je x-axis. The first charge is at the origin, the se0jt/mw ox7 azmw 0wj:/cond 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. A charge of +2.0 mC is dvz 8d;.vr f/vxb1 s2kplaced at the origin, -2.0 m C to the 2 18dv/b;dzkxfr. vsvright 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 positions: Q1 = 2.00 mC at;.zdrgesq,(1(v f yis x = 1.00 m; Q2 = 3.00 z, y 1sqegsvdi.(fr( ;mC 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 lg ,;s apiju-5m,iy 1kplaced at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force k jsalm1y;- iup 5,g,iof 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 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 ise) 55ge*eoo3ib:a./ ike fouo at (0, 0). What is the magnitude of the ne53b:)* ieo uie/ oo kagef.eo5t 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 m wc *nn9y*n-unC is at (0, 0). Whyn 9c*-nwmu *nat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at th m0zjg+ c.w7qygikj- *68f weqe vertices of an equilateral triangle which mi jgm w8yq-0zw*.+q jcfeg 7k6easures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated bo tmp9oy 3p*,ly 3.0 m. At what point, onlo,t 9m*po3p y 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 zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Whereusmgtly+21k 02c,-bv (nqet g on the x-axis can a third charge be(2 cm tb,e+u0ykntg- gq1vls2 placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wher kzj2 wke03;ar.ocx8 l3zuxf d+:nsk7e can a third positivdlko3z+7f rj 02;wkxak:3ezcxsn.u8e charge +q be placed so that the force on it is zero?

  A copper penny has a mass sx)tgl s:g:/x 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 attrab)uqccl-kk1d8 0 /k yaction of a fixed proton some distance above it. How far above the ele a y/kq- cbucl)k18d0kctron is the proton?

  Two 0.20-g metal spheres are hung from a coqdauf+0q fyoxc/9w */mmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apa*fxq9ad fq0o/u/ +w cyrt until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of frqn(4wys aq-o i2wr6nqb5 7)+40e. What is the magnitude of the electric field2qnfr -bry(5i4wqw sa6) 7qon at a distance of 1.0 m from the nucleus?

  What are the magnitude npblxh; 9nk4x u+c1g 8kjo/b1tw02p dand direction of the electric field at a distance of 1.50 m bdxk 1x9/c 8bnln2pwg +htkp4;j 1u0ofrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge.vtqbs 2,0f 2 xg7.qcty What is the magnitude of the electric field at the location of the test chtb0.xv 2s7, 2c tyfgqqarge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the ipo-b0 k2 l i4e+ytwsddw9 )n:+jl ve+electric fsj 20+:it wynopv9lli4k d+b+ wed )e-ield?

  A 5.0-C charge is 10 m from a small tesy sgi)(0 1 llzdte3d,g,18 oa fdieu;pt charge. What is the magnitude of the fozya(u3l;)t 8l egdi1 0pid1 s odg,,ferce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are sepalo;h-1u jd4ts rated by a distance of 4.0 m. What is the electric field at a point midway be ud1-ojtl;hs4tween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark w6dpuo9 c+v)mof a meter stick and a -4.0 mC charge is placed atco+u)9m p6dvw the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of8. dg ;5xwv;rls6 e9n0jlyu rk a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is ewl;yx.dljk ru6 rv8sng5 9;0the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 3o on4;ox6hty m. What is the magnitude of the electric field at the point midway6ox ;n t4oyo3h between them?

  Three 3.0 mC chargesxztvu5m-o.)drnr+h f d s r*4: are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mCrdzv4)r5 :-mu*sft dh r.+xno charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a sidbc nhn*751abqt qcn.8e. 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 b bcq1nt.n *nh5a8qc7at (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 it i7)nq.dk4 j l2( ahudbtj(v -lipl+:ias placed in a uniform electric field. What is the magnitude of:l 7j+2k(j dad t4ap-l) hb.ln(iivq u this electric field?

  A particle with a charge of 7kn ly 5cls)8k4.0 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 .l1nd*a wg0r2ap an)r;;ed;p*wh bexg is placed in an electric field of 6000 N/C pointadahr;p wg1l bn0e 2. pa;x*w;e *)rnding downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass r0w)r5 o opdb;uyu0b: f8lw ) qoqgf/(0.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. : wwr/qbd8y(urfg l ou)ob5q ;)0ofp0 What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge ofcm qe3b1:sh2r +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spher1 bq3ms e2hc:re's surface?

  A metal sphere of radius ;r hj5rj2xmk5kd ow 1nrrk:1-2.0 cm carries a charge of 3.0 mC. What is the electric fie-krhr w:5 1xonrj5kdm1 2kjr;ld 6.0 cm from the center of the sphere?