State the law of conservatiorel;lj v k.pe;z*a0z : r,pjt5n of electric charge.

  Is it possible for two negative charges to attract each ot8,8le0xl7-wwqqw1 u8*crln ollj +q jher?

  Is it possible for a positive an:f5b;s g j:jw8jrm(wk d a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the prr2zwihu;bpi4b.n tm kq)9 z3a. kd;2oocess the glass rod acquires a tk9 d)ai2poi.zb. k43wrmzhu; bnq;2 positive charge and the silk

  A proton carries a

  The model of the atom sho mo v7s lhb(pjo*.n3:mws a

  A neutral atom always hay4tzm7dkq. 0qt)w7/cwzc0f t s

  An atom has more electrons than protons. The atom isg4yauyh k9t78

  Materials in which the electrons are bound very tightly to the nucleiz*or*0n ir8 hm b:zvt3 are referromz n*v:*8r0ithz rb3ed to as

  Materials in which the electrons are bound very loosely to the nuclei and ca-vw yc3 +*(l6lonqxnv n move about freely within the materv6y*wq lxvo+3-ln(c nial are referred to as

  A negatively charged rod is brought near one end of an2j3;dfu,ay4q c,arhc 7v-xii, g8y;8h z qaky uncharged metal bar. The end of the metal bar farthest from the charged rod will be,8rd, 2i hyfh 3 qjuxz y;yacqk aga-8,;v4c7i charged

  Sphere A carries a net positive charge, and sphe jyj )*zu*t1h wn9iut;re B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a ujti)jt1* nu w9*zhy;wire that is grounded. Which statement is correct?

  How can a negatively ju4 k ;ii+dwq ao:k/o4 -)kfbecharged rod charge an electroscope positively?

  An originally neutral electroscope is brie34o2o55b xkvap p mdl8)pnqi)fly touched with a positively charged glass rod. Theq553px )4nplmodbo)ika28v p electroscope

  An originally neutral electroscope is v7 dn cs/.q q3+ib0rhugrounded briefly while a positively charged glass rod is held near it. After the glass rod is r70uqsi/ n3 dvcq .r+hbemoved, the electroscope

  A positive object touches a neutral electroscope, anizd b ;3zbaog+fw(-h 1d the leaves separate. Then a negativeh3 g+b-(fiwzb; o1daz object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A lsz9z7md 1*x() xpyknv7 0o.fs(gk jg37 drg zneutral mez9gzsypk1 zgo(xn7(*g) k xd7r.lm 7j0vf3s d tallic 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 is the final charge on each ball?

  Charge is

  What are the units of the Coulo:swy/k ij 41ha0ggp0smb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The s,vt d2:;an(1 2v9ydvqrxr1 tkg2n cefirst charge is larger in magnitude than the second chargtq92x1d 2revdv ,as;yg n rnc:vtk2 (1e.

  Sphere A carries a net charge and sphere B is neutral. They arxni r;c399ixdz j( m2he placed near each other on an insulated table. Which statement best describes the electrostatic force betw ixhx2z93c;d 9jm i(rneen them?

  Two charged objects attract each other with a certauv.jygsxu;n2 we/(yg* - wbt321 cud min force. If the charges on botw/;dus u13t-(gc bnvxmw2ey*2 .jyug h objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exernzqld0d/1oppu3b bkz30 9s ;v t mutual attractive forces of F on each other. If the charges are separated by a dist3q0z;p/ubdl0osb 1v9kn zp3dance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Whm+j+ )am+myw 7fm2 oxr4f ur6gat 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 origin+u6)j+7+x m4rmrwfgyom fma 2al value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. / 3k5j-x5ejg,joriuwWhat happens to the magnitude ugjok/jx,rw-i ej 5 35of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are sepa 3y r9gdrg9x7frated by a distance of 1.0 m. What happens to the magnitude of the fo7 99rgxr3ygfdrce on the first electron if a second electron is placed next to the proton?

  An electron and a proyscb0;b1dxu fc2 e/ ;gton are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is mo;/;x1e2cubdf 0gys bc ved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a s-fi y;, mv 6.dajf6prmecond point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 N acts6v. ,;ia6 -fpjdmyrf m 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 centroi9cjvy*c(-d:m9m c7r ;fofz v jd of 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 one of the other vertices? vy7zcc mjvof* -;mf9jd9c(:r

  Which of the following is not a v 9edul8j8dowi-)pr r-ector?

  At twice the distance from a point g:ho9ltvpgs;/fk8 5y ldke,hoo4g 1 3charge, the strength of the electric field

  Is it possible to have a zero electric field value 76 ;w9 ew0 rqkc uxym4p+rqs;ebetween a negative and positive chary6;rr4qq; wmkcu7w0 peexs+9ge along the line joining the two charges?

  Is it possible to have a zero electric field valuemr-n () qeb4+* gfc)a,pghzoc between two positive charges along the li)*c mh g)onf(qe p4zcag-,b+rne joining the two charges?

  Electric field lines near psitive point chargeskev2r+1u( dogwnw 6a.

  The electric field shown 5dojg 05yyf-m

  Can electric field lines inta(-2ko:qne g xqln a;)xwu;3persect in free space?

  A solid block of metald p..m6;wgkn1hh1fxaqfg oq*j 8 :z 2n in electrostatic equilibrium is placed in a uniform electric field. Give a st jx k a*q8 62;fh.wngpod. h1f1nmzg:qatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gyi y+s7dkowk36o5c g1 iven the same charge, the electric 3 1oy+76d5k isgwcoykfield (E) midway between the center and the surface is

  A cubic block of aluminum rests on0d n sz3b(,jhdy,go5ich(lq 0 a wooden table in a region where a uniform electric field is directehogsq djcy 3 0dhnl(5(0bzi,,d straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatn4vgr y c+m/v*ic equilibrium near an electric charge

  A positive point charge is enclose/cs79 xu b,lt1y vmu(jd in a hollow metallic sphere that is grounded. As compared to the case without the,7b / tsux1 lmcyvj9(u hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of coufe :(.0jg2 uti s;csbnductors in static equilibrium.

State Gauss's law.

  The charge carried by of:m:y0 (kymo a;8phke ne electron 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 +2.00 mC. How many+xy3zdi s)pijl 4 yx(ge/8d 6z0(cmed more protons than electr8ed)c6m4 y xexidzl +(i / ydg0(jz3spons does this piece of plastic have?

  What is the charge oa.of9 /xb1acpy n18 dqn 1 kg of protons?

  An atomic nucleus has a char3gs*9s(yox 8x3 uejev ge 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 valv*og)44nab( f ;kyqflues of 2.0 and -4.0 mC, respectively. What o;k4 y(4lqf fga)*nbv is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, ancirnqidx(kh u.lf07 3 5k;bl4 d the force between them is 1.0 N. What is the magnitude on f3bdck7u5i rq;x0ilk.(4h lf the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How /o,n r4jtt0 bfa 13,g /jppnsjfar apart are they?

  The force between a - el 7sjprlofo)+,u *lgs-ij8$30 \; mC$ 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:xb -q2 xyvc/ b*g(npde. If they are m2 ybbpg/-:(dxqc vn*xoved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC a2(ord or- prl7re placed on the x-axis. The first charge is at the or-2 lo7r(pro rdigin, 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 charge anzcdqt9-u9)9g y+ vf (*wsqbof +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at thed yg (*nav)cuqw+s9 9tbfzq-9 100 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 mxsqwkmzvv+/q i ;0g7 78hc. mpzl .ek*C at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -m/0wqhki cpg7zx7 mqklev z*;s. v +8.5.00 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 cen e,e) z)cbdta5w,xys* ter 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 N acts on the positive charge at the center. What is the magnitude of the f*bw ,y)xec t5,d) azesorce 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,j(tz/sn9 h8of 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 8tz9sj/ofh( n 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.9s o+j53j ,bks5j nrsze 1p9os10 m); Q3 = 5.0 nC is at (0, 0) jn + 9pjs9oe5kj oss51sr,bz3. What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an 7s0d z 5z f80afzeo:laequilateral triangle which measures 30 cm on a side. What is thfosd5:laf8z z0ae z70 e magnitude of the electrostatic force which acts on any one of the charges?

  Consider point chargeswp--upr*;c v lrgi*- u6ajf9 y of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to pl-urpl pw;iyc*rugvf-*-a 69 jace 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.ykm8azwovqn-sn;hw5 +7*dr 50 m. Where on the x-axis can a thirn7 ;zs5w*dh m+-oaq85vw yk nrd charge be placed so the net force on it is zero?

  Charge +2q is placed atnh,m9j-gd0 p nr8ex.f the origin and charge -q is placed at x = 2a. Where can a nn0 rm.9xfe-d g 8p,hjthird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A toopz61g )jjfg ixza,-4 tal 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 attraction ofv7j.lr8*zxyz+ +6bg2n, r nyeh jht.c a fixed proton some distance above it. How *g e 6n2y bt,z.j7+lhvzn8hxj+y.rrc far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by non2k-c b. :pqxza e v6y3-f7dpbjconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them a.vy c k-623epbj fxq:pazb-d7part 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 magnitud+lr;sm))meh x co, 1:iklrgm4e of the electric field +ck:,llsh)mom)r ;1 eg i r4xmat a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fieldmmit 5vbamn,l mtk2le) 7kk2l 85) s2t at a distance of 1.50 m from a 50.0-nC char7t8eim) lk,lman 5)t5kmt2m v2l sb 2kge?

  A 5.0-C charge is 10 m from a small test 24w qj)vo g6o:k*xkotcharge. What is the magnitude of the electric field at the owk:4t)k*ov6x2jqg olocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What i*.h) q : rsyjrf 3l few*z7oko/ zfq5/)xeca1qs the direction of the electric fieldf f/qh:ez/ l5jo .) efzo 7ks*acw)ry*qr 3x1q?

  A 5.0-C charge is 10 m from a small test charge. What is+u b3y mcd9e4fo1 a4ew)g qew9 the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test co9w +g4cd 49eewm3q ye bu)af1harge?

  Two point charges each have a value of 3.0 C 07ivy; ojua*v,v5 sw6o q lgqif0 p7r5and are separated by a distance of 4.0 m. What is the electric field at a point midway between ,w0q;vvpqi6*rlu 5aoos507 gf7jy v ithe two charges?

  A 5.0-mC charge is placed at the 0 cm mark s+jj-53 zswve of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mssj+ 5j3-ev wzark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -411mb bj-.8 ,p xobgrp6v ap5sf.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zerbopp8j15gb6 1sfbp -xvam , .ro?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and2cx(z6 r)bo ebn o7v 2/c84ot6bgncoz x = 0.20 m. What is the magnitude of the electric fc/c(z2 b nn gobot8xorv4z o26)b e7c6ield at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squar/hu7tc9he e8z e of side 0.50 m. The last corner is occupied by a tze9 che7u/8h -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed a a hi558vf0smht 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 the electric field at isv55fah 0h8m the square's center?

  A force of 10 N acts on a charge osl ,f)2yak 9ik/ad y8l 3bha6cf 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this /hi62 falkly,a) y3b9 skac8delectric field?

  A particle with a charge of 4.0 mC has i6c)s 7/sh+(an6d bg gpnv*vt 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 field of 6000 N/Cc4z,2yh+hku2c lu b9d fnpp0 - pointing downward. What charge must be placed lcf 2z 4n9pdpk h+buy,cu-h20on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charq6ou/+q od7 x;q8ii u oh-rj6mge of -2.00 nC. The ball is placed inside a uniform electric field, ao +8ij 6ihqd-7 urxm6u o/q;qond 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 cha , 17pw3rlyngvrge of +2.0 mC. What is the magnitude of the electric fyn7gr, l 3pw1vield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.s-fklk56 q6fb 0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of-bf5 lks6 6kqf the sphere?