State the law of conserv k:bz+0a o2zcbv ym21uation of electric charge.

  Is it possible for two negative charges to(.xxeer ym /5w79twj-l iuqa 2 attract each other?

  Is it possible for a positive and a negative charge to attrapgo7cqmre.);7 td7 uxct each other?

  A glass rod is rubbed with a piece of silk. Duau kixx/ 1y0*kring the process the glass rod acquires a positive c1ux iaky/xk 0*harge and the silk

  A proton carries a

  The model of the atom s* qy1sx /*nx 5ze-skz*q we*pohows a

  A neutral atom always :ou 20 cn37f cjzeht;g fo64hmhas

  An atom has more electrons th( g(3twrar xa4an protons. The atom is

  Materials in which the electrons are bound very tighsg so0/ rkv q;mgn5,d5tly to the nuclei are referrer ns/m0ok5d; 5v ggs,qd to as

  Materials in which the electrons are bound very loosely to thexg. mh3u.ui-f 4jaulv- ku*,e nuclei and can move about freely within the material are refavjilh* k.3u .uu ge 4,ufxm--erred to as

  A negatively charged rod is brought near one end o(d/vwor ;l:rdraso 9- f an uncharged metal bar. The end of the metal bar farthest fros;o dr owd:r-lav( 9/rm the charged rod will be charged

  Sphere A carries a net positive charg*nco mm8* jgd e, +f27-lfqnxce, and sphere B is neutral. They are placed near each other o m ecj *f*d8ng-+fqmo7lxc,2nn an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elecc2:4e+h8: og qjqn0 vzf4a nqltroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged r k3o ln98gy)kw86e scglass rod. The electrosc3goeyr)ln 6wkcs9k88ope

  An originally neutral electroscope is grounded brix6+bw0/ t 6k1tetrjwyefly while a positively charged glass6tb 6t/j+tww1k xe yr0 rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutz e4tzd3z(g4kow 42ig +k+ 3 h1tixpnrral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happe3 +(ip14z4zhgo 4x egnrk iz+t3kd2wt ns to the leaves?

  A large negatively charged objec+9tu)b w7 kko4mls bgt (8z,nit is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops beforel kb+onb4 ( muts)z,97tki8gw 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 con057igqdstd:fr s6 b qu s)xo)i-6bpr/ stant $k$, which appears in Coulomb's law?

  Two charged objects arex gro1j q)j 7j:r0fbs) separated by a distance d. The first charge is larger in magnitude than the second ch ox1j)sr)fj:7 brj0qgarge.

  Sphere A carries a net zxy-rys )ipxb fb/p;)+sn6qag4 -+ qqcharge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between t)qx +gppy6fq/4 -xn;yq +- ssaibr)bzhem?

  Two charged objects attrac 8 sihhfz2a6(vt each other with a certain force. If the charges on b2fi8a hs (6vhzoth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive fo;(-p k7bf) ahvts , dsi98exdorces of F on each other. If the charges are separated by a ditdo - p f)8sx7akd9;(s ,viehbstance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F.jjpyw n3+fuxu* j7n(e27qz u 1x+pd4 r What happens to the force between them if one charge is doubled, the other charge is tripled, and the sepau+rw(j3 djnpp u ex7yq2jzfu4 *17nx +ration 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 m. What happens sxlxl44 -b,(ls02 j-a dz3 yfflf0uyuto the magnitude of the force on the proton if a sl sy04,4j fxu3dl0(xlaufzy2 -f -blsecond electron is placed next to the first electron?

  An electron and a protfl+/dwos1k 1 ion are separated by a distance of 1.0 m. What happens to the ma/lokf+ s1d1iwgnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1. t1ga,g v82okfiqv/t ;0 m. What happens to the size of the force on the proton if the electron is moved ;q1/ggit,vav28ok f t 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squar2ou3 wmjp- kk*e. 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 uk 2om3jpw-k* 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 triangle. Whb*sh: axd7-lh qt540wdj; 8kguo )yknen 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 theaxsq:d*n4uhwg5kyj - k8l;t 7 0)o dhb 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 veh jw04qj2g8nndyodj,8. ew l xm7gx7.ctor?

  At twice the distance from a point charge, the strength of thppai*j 2e, q:wcq+w 4ge electric field

  Is it possible to have a zero npjc+0i 75fa3prn fi 9electric field value between a negative and positive charge along the line joining the two charges0pf7ai59pnin fr 3jc+?

  Is it possible to have a zero electric:n jzy6ql/mq n*bc3e / +(fpik field value between two positive charges along thezpfq(*:n3yb+n qk/ mjc/e6 li line joining the two charges?

  Electric field lines near psito4jhdus5v b;v i-b2vn n4bz4*ive point charges

  The electric field shoha1m thz* 6jrad:z:c4wn

  Can electric field lines intersect in free 6tjn9 -- (/aoefgj(.e cwnps7jkb(dgspace?

  A solid block of metal in electrostatic equilibrium is placed in a un rpx:u;iz+f b3iform electric field. Give a statement concerning the electric field in the block'p;zru3b i:x+ fs interior.

  If a solid metal sphere and a sz3pmimj 22p/uat,ca *: d8qehollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the suraa2 3ic*, quj2/p8 mmpdzse:tface is

  A cubic block of aluminum rests on a wooden table in a region rme:xl9-c 2m uwhere a uniform electric field is directed straig:2ul exrm c-9mht upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an e ul32:t 4(hqq2w xoxqalectric charge

  A positive point charge is enclosed in a hollow 6jf +2*f;mzws8yvatd metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the holmwf;d26 tf*8s j +azvylow sphere has

State three propertie:a10 :k )hyortmgahun sdlu )8)z6hs)s of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron i*y.. bu 9 jqoxfqxmx8jiw2gytc8 r*)5 s $e = -1.6 \times 10^{-19} \; C$. 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 c -y)2xyo wbd w-n(*odmany more protons than electrons does this piece ofoxnwc-)b(w 2o d*yd y- plastic have?

  What is the charge on 1 kg ofrh *xs7zszws*baf* 4xorh,;- protons?

  An atomic nucleus has a charge oq)lctf nmv;4 qb)b5n1f $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated bxc c9 2r 2);wp*drjrtey 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. Whxp cjtcd r*)29rr;we2at is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a +ljkup v(1olbf zt m(0w6 /od0second charge, and the force between them is 1.0 Ndz w(u+pbml6 fk0o1vjo/t (l 0. What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?dwbq71 gs ;p1n

  The force between a : ):btm3 us(f hb2d0-k)di b9p.pupvi yhmn:c $30 \; mC$ 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 1.0pn( :cv znaixdv2bn5o: n5u5tfy 3:7n-N force. If they are moved to a new separation of nn5iaxn:b yfc2onu5d7t( z:v:5vp 3 n8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are pfu16;6sukvoopp.t 9vlaced on the x-axis. The first charge is at thfu.66osvtuk 9 ;p1 ovpe 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 g *7xhq;3s wnl.t(,z6qfet 3-bmjcx oplaced on the x-axis. A charge 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. What are tosef-j(l7mtwx 3.t3;q* qhb6z,xgnc he magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are locmk:nn is1 c)x5gi,m0r ated at the 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.cm5ng0:i)r 1,mixks n 00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the cevgem 30z+ 9,zyrcw6g anter 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 centerzggy6m 9c0zvr3+ ew,a . 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, o un w/dmf4/hj8ano19r7er -p 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is rf h98o/n1e4m -d/ a7nrpo wujthe 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, 0.10 m); Q3 = 5.0pp48g 246a eewdl) rwbg p/s3t nC is at (0, 0). What is the direction of the net force on the2tbw g3d) s4 pw6gre8/ lpaep4 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equiltasfu a :k7bw.m zy6ly(*8;v xateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on an7ls.y*uv xm tzf8aba6ywk: ;(y one of the charges?

  Consider point charges of +Q and +4Q, which are x p vve )2)8fvoha0;du b.3peiseparated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q sucb)vpvu x 8eo )v2f3hie;a p0d.h that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin 9ure) u3luc:s 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 39c uu)lrs ue:force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whn 2*74)s/)is5pnywl zgio wt0 tfnkl7 ere can a third positive charge +q be placed so that the force on it is zp)kntgws w4l/onytsi z*7l27 n5f i0) ero?

  A copper penny has a mass of 3.0 g. A totavk-j,jgh1x upb,n;a 3l 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 attractio2ikdt5q2 0qwk b u 5y(f,7sfqzsqa6 r/n of a fixed proton some distance above it. How far above the ez7skb6aq 2si/kuwtff q0(2 qy5r5qd,lectron is the proton?

  Two 0.20-g metal spheres are hung from a common point byq (pk1m x7-s2n jsu0fr nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them nu rqmjkx7(ps 02-sf1apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a chn m:vk,t-taxuw seos9gf +s:b //z25z arge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleu b5atesm sxf-g,u /sz:+29wkno/z :tvs?

  What are the magnitude and direction of the electric fiel lmib a7sa(+ of+wg6ld (g5m+cd at a distance of 1.50 m f+mo6 bi+mlwca a5l(( g sd7fg+rom a 50.0-nC charge?

  A 5.0-C charge is 10 m fr3gmtl cd 2r0,ogclxw95j0 h1m om a small test charge. What is the magnitude of the electric field at the location of th50l0 rc jtgg 3cm2lxmo9w d,1he test charge?

  A 5.0-C charge is 10e4tnmp*:hpk()x d d9f5 h(* iv9whtai m from a small test charge. What is the direction of the ele p:itv9)hf*e5h(9 tanw(phmik xd4*dctric field?

  A 5.0-C charge is 10 m fromsp .v3xrkj/o;b 74u oc a small test charge. What is the magnitude of the force experie3 7/ .ovc4p urb;joskxnced 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 separated by a ju59, 8bi ugwc z+di48 e*ozwndistance of 4.0 m. What is the electric field n88 o*dg+45z9ce, z bujiuiwwat a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a mj2**lgass/j b)lnk2eiwq; e g;: 8owl eter stick and a -4.0 mC charge is plac;eswni2l *l gl2j b o/q)weg8;:k*asjed at 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 of a meter stick and a -4.0 mC,uerle,v /sks)lk 9t4 charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electrrvl/4ese9ktu s,k),l ic field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 kuw/ qsz12x3js.*f ymand x = 0.20 m. What is the magnitude of the electric field at the poiy/1 w z2 qxufks*ms3.jnt midway between them?

  Three 3.0 mC charges are at the three corners of a squa 8ilif ou2 83yhibaz2:re of side 0.50 m. The last corner is occupied by a -3.o: 2bhi2aifi z8ul83y 0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charg+cnw.*lkdy3 ees are placed at the corners of +.* ce3k ldwynthe 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 the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniformblgv9.r 1wi7v pcm5p6- (zzgv electric field. What is the magnitude of this electric fieldl9v -16bc gz(7mgi zrv5.pw pv?

  A particle with a chargdl :t;s* *23lgbdhel8 z(qarke of 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 ma2 jbne5xk.1:z 1aas ojss 0.120 g is placed in an electric field of 6000 N/C poin1 e.1:ja bjsn5zk2o xating downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.l k -m)a0xs k(wf28oig00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. m8a2w lski) -0 x(fokgWhat are the magnitude and direction of the electric field?

  A metal sphere of radiusd: qlq w)x;mrb h/-t+ro0.fbs 10 cm carries a charge of +2.0 mC. What is the magnitude of the electricq)q /;dolr x0bbw-s .hftmr+: field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a cj)f 2u(upq7 /xkgy,9kydxg ;charge of 3.0 mC. What is the electric field 6.0 cm from the center of thegf() p,kdy7jyxu q29kxc/ ;ug sphere?