State the law of conservation of electricc50mb l w46hrk 3d-raiy1qqw) charge.

  Is it possible for two negative charges +pumn9b6rht5g :wpv.to attract each other?

  Is it possible for a positive and a negargsle).a jb4- axxe yte4 ;7 h8qr6zs+tive charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod acrrmbqqd v 7.nk+7v9,kquires a posi9rv 77 q.kqb d+rknm,vtive charge and the silk

  A proton carries a

  The model of the atom shows wz v7j ggv702va

  A neutral atom alwaywlumk(xb4 )0q s has

  An atom has more electrons than protons. The atom gpsi;syw8-lmaz vl/ n/;whm1 -z a*e*is

  Materials in which the electrons are bound very tightly to the nuclei are refer lk5f5o6/ hhlyred to ho yl/fh5l6k 5as

  Materials in which the electrons are bound very loosely to the nuclei and can mv2,zn,+lo wc: ;tq bdn(khurt m(q9w.ove about freely within the materialv2htqcz9 k mdw w,rb.;t uq+lo:n(,n ( are referred to as

  A negatively charged rod is brought nex6hrb)l/ib s. xb6ip2v o:756r:wns bn lbv +bar one end of an uncharged metal bar. The end of the bn bbl b)o2+rw rn5xb:bh./: psv766ixil sv6 metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere /( msvoai(2guyinc ,;B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wi,ysn m;(v/(c 2aigou ire that is grounded. Which statement is correct?

  How can a negatively charged g:r su-vqai1 5rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a posiv7iulp j5q:/)pt nxs+tively charged glass rod. The electro) :jn p+vt5iu qlpx7s/scope

  An originally neutral electroscope is grounded briefly while a positively chal6mq0 *okv.kta ndywinewm)j 9 g-j,:6 -hi(irged glass rod is held near it. Af)9tm:-wjn*w jl 0 (gkva-in,moy i k6.i6ehqdter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leqy +l-tffsox wv7t .;.i:li2yaves separate. Then a negative object is brought near the electroscope, but does not toucwsti if 2+l fxq;vt.7.:yyol-h it. What happens to the leaves?

  A large negatively charged object is placed on an insulated ux rjg*3vbr hokxwg1q4*93t y: kd p*9table. 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. What isg r ywpu9g*xt93xk:b4v1h od*q3rj*k the final charge on each ball?

  Charge is

  What are the units of teuwp33s u7fy o9bl1dqu- j.: hhe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge ian+tz n+h wp*2x(+uavs larger in magnitude xa*w+u2tn+pnzv a h(+than the second charge.

  Sphere A carries a net charge andhhqr-/s1r e-o sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force -/r hshqe -o1rbetween them?

  Two charged objects attract each- -o0 brzkj te ww0w*gy:eist1f +1wv( other with a certain force. If the charges on both objects are doubled with no change in se:o1vjwgrizbt s*wtf(w0+w 0--e1 ky eparation, the force between them

  Two charges are separated by a distance d an2,c ecte .nr0nd exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutualnt .cc ,20eern forces?

  Two charged objects att m c9y :oo8+z9cbax+wbnbwa 40ract each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation 8o + cx byozam9a90w:w4cbn+bdistance 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 nk 1k0g2gvr o9fjl7 +cz,gp.i 6z*qtnms +gf3 distance of 1.0 m. What happens to the magnitude of the force on the proton if a second7t+2m6n+0j.rvc g fglf oz,39 * gzkn1sipq gk electron is placed next to the first electron?

  An electron and a proton are separated by a zuz0 dz;;w-jrzllfu pt;n//8 distance of 1.0 m. What happens to the magnitude of the force on pztnl;j/zzduf/uz;;8rw- l0 the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distdlqv.ne4hb g:u 2i) 9kance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the pqvg ):l heid9ubn 2k.4roton?

  A point charge of +Q is placed at the cente (mm:: 8zt2khisupu. fr 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 fuf m 2ih (z:ut:8.kspmorce 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 charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral twt9wsufmb l.e/eg 7qgaq 5-0jap4;n 6riangle. When a second charge of +Q is g0q ela5 9gmpnbw4e6ft.quas7; j/-w 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 one of the other vertices?

  Which of the following is not a vector?wv6qk)j e0c,j

  At twice the distance from a point charg6oc*zdihqo;s g6 j.a* e, the strength of the electric field

  Is it possible to have 2;vlbzo4olm9c e u bkl :17h)qa zero electric field value between a negative and positive charge along the line joi zkv l9lb7 b4)lco1h:oeuqm ;2ning the two charges?

  Is it possible to have a zero electric field value between two positive ch e9kqgo(*lv4caqe-z cf92 go4arges along the line joining the two chgfk vca44qe ecozo -*l 99qg(2arges?

  Electric field lines near psitive poine3s7vs;b- )fmij,c z mtao5t*bj k z2*t charges

  The electric field shown ; paoz8-e5-ucae*y rfk :klx 6

  Can electric field lines intersect in free 7uk: +pzhkkf6airpe/0sdf 73kxso9 9space?

  A solid block of metal in electrostatic equilibrium is placed in6z21 ljfxjj c8 a uniform electric field. Give a statement concerning the electric field in the block' 8 j216czfjjxls interior.

  If a solid metal sphere and n01n;)s d4fojgiy2(6 bosqow a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surnso(2w4q6 fodon)yjgi ;sb 10face is

  A cubic block of aluminum re;j5hw e;8vohhftp4lrl sdfo32zb (-7sts on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the bloc4;hr7eos h johbf-l lpd2z53twv; f(8k's top surface?

  If a conductor is in electrostatic equilibrium sma rg:q, -in(near an electric charge

  A positive point charge is enclosed in a hollow metallic sphern )sp0y 6art fxcs500be that is grounded. As compared to the case without the hollow sphere, tyx s6c0aft00r )b5psnhe electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibri0 hmf0hg b2+d0*b et(fgva0vfum.

State Gauss's law.

  The charge carried by one elt 8t. hd*e92 ;vzc p8k2v ui9sit(hynhw/ php:ectron 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 h644ltlptuj+wut:*qb. yj qhp ud7:.kas a net charge of +2.00 mC. How many more protons than electrons :bl.+ .* 4q qtjuu dl uyhtp4p:t6jwk7does this piece of plastic have?

  What is the charge on hawjjn1 ij in.;/xlq6 )v o(w41 kg of protons?

  An atomic nucleus has a char)g-zgk 0 wpc )qa*5lqnge 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 and )7bi,rw on:w nrc9e3m-4.0 mC, respectively. What is the magnitude of the electric force n)m3n :cww r9eb 7,roibetween them?

  A 1.0-C charge is 15 m from a second charge, and the force between them w iv2 kb;n(ws7is 1.0 N. What is the magnitude ofn wk2 ;7wbi(vs the second charge?

  Two 1.0-C charges have a force between tnj zg-0hi l ck9rutpit* mj-y;;; 2de 1jxf,6mhem of 1.0 N. How far apart are they?

  The force between a 4vlv((9cwaa7h*p h,cmphvfgn 08 w (k $30 \; mC$ 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 7i t;4rwtn)dmkz*)rj0 c fg3q1.0-N force. If they are moved to a new separatitzjic*r )0rtw g qn3)f ;d7mk4on of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC5n/1egy rfbh( are placed on the x-axis. The first charge is ane1ghb(yfr 5 /t 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 the origin?

  Three point charges are placed on the x-axis. A chargeeo8np+fc q qo8 xicxh+0n)/- j of +2.0 mC 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. ooxh8f- +p/exq+c j qnn)i08c What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at m- u8c*zpt:k- np7-w8 a nkcdxthe following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What-cpnt8nm kdpx :7-- cwuka8*z is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, anhdt2 7d.k88ykjdq dlj2a ,2 kfd 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 is2d t,kd dljj2 .7a8kh qfdyk28 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 nC5.da otpfaf/6cle (1v is at (0, 0). What is the magnitude of the net forcevcpa 6tf/dloef51.a ( on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q23tf t;lp/xnvnq 7z93b+n ts6o = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0snp tn3qxl ;/367zvo9 tftb+ n nC charge?

  Three identical charges of 3.0 mC arevi3 x)it;-tusn0s2.yjj l jb* placed at the vertices of an equilateral triangle which mea0* vtj ;yl)biu3j2nxj.t s-sisures 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 by 3.0 j m(yi1lv )-qp2l1ksx m. At what point, on a line between the two charges, would it be possible to place a charge of )1q1y lkl( sj2i pmxv--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 charz,i7bi-4ac 4ziz6 wadrx3bn.:e9s n oge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net-niz ie,4ax4dw.bzo irz6ba s: 9 37cn force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wherel o92f4,,ulb2kt kwz)cq-e,c;qc n lk can a third positive charge +q be placed so that t2ue4l,owqkt ckk,cb nf,2 -9 ;zql)lche force on it is zero?

  A copper penny has a mass of 3.0 g. A totamqp2,a yh3gau 9; i:*abkdjn5 l 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 forc txuy*w81m2u (a:op fde of gravity by the attraction of a fixed proton some distance above it. How far above(pay*m:udw x8fu21o t the electron is the proton?

  Two 0.20-g metal spherebrtp-ikcwsh2-d-;2-mpja o v ls7 7 9os are hung from a common point by nonconducting threads which are 30 cm long. Both are given22ckt-owrmpo-s sj - bd97 ahp;liv-7 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 +40e. What is the magnitude of i:9 zlrk; slljqy9s +5;w(obr the electric field at a distance of 1.0 m from t:yi9s+ ql9(;loz kl5rsr ;jb whe nucleus?

  What are the magnitude and direction of bu) 42vx/kve ythe electric field at a distance of 1.50 m xe/)4v2ub vy kfrom a 50.0-nC charge?

  A 5.0-C charge is 10 m fry *npovjgd;hdjr w/9au12 :8 iom a small test charge. What is the magnitude of the electric field at the loc9 dod g:pav*;8 21jyuh/ niwjration of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of ci:. wj,) +8 yo.ucva4l ppmvxthe elec ,jv cpwxl .)8ip a+ocu:mv.y4tric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of9-oh*xhhfkb3-2 jzrv/g qq y: the force experienced by x2b/y*rv-9qhg3o kz: hf- qjh a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C a:xuzpv2,n(hjq+p68uo a 5 kvz nd are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chvk u2qo5 6u p,v nh(a:x8zj+zparges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter rh/gll,- 0 y rz-ard1istick and a -4.0 mC charge is placedi-,grl0 ryh /l1 -arzd at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is plfjo : uwg /m+.*gmkus.aced at the 0 cm mark of a meter stick and a -4.0 mC charge :gs u +f/wo..*jkgmu mis placed at the 50 cm mark. At 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 are placed at x = 0 and x skep 8-*fxecu a)bw*)ih1kw g;t(v/ r= 0.20 m. What is the magnitude of thee**ir)w8kkf agv;-t/hwbpcesx) u1 ( electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square wux)q ru3o o,7ayw(0mof side 0.50 m. The la3q(,)womu xwu 7r0a yost corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m,18g wdvgvj2e 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); g,ev d812vg jw +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 of jcx-j 1/ib; hs5.0 mC when it is placed in a uniform electric fiel/;1cjsi bhjx -d. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a ma iw( sd/)g vllh/ts0*gbu 2i-dss 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 600z (s+nr txh0h2 ierw4,thn b590 N/C point+hhnie5(bwhrnr40 ttxs z 2 ,9ing downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a jub:gch3 k1nv9vz+tm i i0d02charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the nt1 b2 vc0+divumg:zi0k39 h jforce 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 thrhodla. r59(l npo 5b*e magnitude of the electric field 5.0 cm frpd(l .hrln orb5o5a 9*om the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge ob f51xi --:d cb.zthmyf 3.0 mC. What is the electric-m b f.xib-t czh51y:d field 6.0 cm from the center of the sphere?