State the law of conservas,v8no6qw 7tjtion of electric charge.

  Is it possible for two negative charges tosvezmm 6o /2b1 attract each other?

  Is it possible for a positive and a negative chary ph7 qa(dvf/n 0nthce,.yl41 ge to attract each other?

  A glass rod is rubbed with a pakn z1l3 lyj)tuu4nvdd9 m 29t9,afn2iece of silk. During the process the glass rod acquires a positive charge andt za j9,ka2u3ldu949 vmnyl1)dftnn2 the silk

  A proton carries a

  The model of the atom showv shw/cyffw4fv/ +r9oc( 9y 6gs a

  A neutral atom always h: hbf zl1(7fmca,zgf+6 (wn epas

  An atom has more electrons than protons. / jjx 4x49dhsjThe atom is

  Materials in which the electrons are bound very tightly to the nubh25vy :mjo5kyk/l3 oclei are referred j lm :5ok25y3y/kbhovto as

  Materials in which the electrons are bound very loosely to the nuclehe x;unsi +b3ie ws):6i and can move about fr+i ebwsh su)3 nx6e:;ieely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged m a2gn+a6g9c czbs(l5 ketal bar. The end of the metal bar farthest from the chargeg5kl asc(nz6a c9+gb2d rod will be charged

  Sphere A carries a net positive chargen)v*.tuul.rddmxlb5o o.xi6 n9z ++y, and sphere B is neutral. They are placed near each other on ano.+)yrud6.oz.xn lu*d lb xn5 t9 i+vm insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge atbj y ;gnxx,ev-(*-imn electroscope positively?

  An originally neutral electroscope is briefly touched w8l)a /wrlyq s*i ry.2*:/nfxls*y fddith a positively charged glass rod. Th r2qrsl*df:./a ndi *fy/wl *y)sxyl8e electroscope

  An originally neutral electroscope is grounded briefly while a positive09qf gp sq h-wjt,r2idu5 6aw.ly charged glass rod is held near it. After the gl6 w0wq ,9jfq.t52-gsdhap u riass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate./ byxhvd;7h(7pb.aij Then a negative object is brought near the electroscope, but does not touch it. What ha jvbdph7hxa(b;iy/7 .ppens to the leaves?

  A large negatively charged object is placed on an insulated table. A;e8jd2 p*jbmu,w 97c gn8 g-yihmozk. neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls 8p2huo ewc-km8gm, iyjng7 b*.zd;9j 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 of0lbp x p95csy09n6 ;t;hx*gawp c j9ed the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largv ghi*vc0h- 9wer in magnitude than g*9viwhc0hv - the second charge.

  Sphere A carries a net chf5v/cighlk .t 1bw-u* arge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describe wktgf v*lb1uci5 /-.hs the electrostatic force between them?

  Two charged objects attract each other with a b h67/o +aqxjgl/ 4isdcertain force. If the charges on both objects arej bo7 /d4shqi6g al+x/ doubled with no change in separation, the force between them

  Two charges are separated byc ue2b, m 18-d;rkq5e-rwdz;ojh1 bib a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a dis 11e58ohci,-d2r ;db;m euwqz bk jrb-tance of d/3, what are the new mutual forces?

  Two charged objects attract eace(kygk su858as,w e* vh other with a force F. What happens to the force between them if one charge is doubled, the oeyu8sa ,kw5*8 evk(s gther 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 1.0r 4d+v* sax.xkqu. dq+ m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electaqxx+kd+. d q usr.4v*ron?

  An electron and a proton are separated by a distance of 1.0 m. Whatstqvnbr /k3-3 happens to the magnitude of the fobqkn-3 3vr/tsrce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance orts;lx 4n4*)bu+h pfn 7;hlyef 1.0 m. What happens to the size of the force on the proton if the electroun;sfy+l ) 7;p4lr tbnx hh*e4n is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second point y/on qsgry)c/2 o.om;charge of -Q is placed at one of the square's corners, it is observed t o;gy.nqryc2/)o mso /hat 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 charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral pka;cydwi; y2m*73z c 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 is3z yiyca*; wdk 7cm;p2 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 nopmnjmu8p,(h;lw mivxxk 1) ;+t a vector?

  At twice the distance from a point charge, the strength of the electric fieldar*neb b x5)ba;p 8:kc

  Is it possible to have a zero electric field va59qo cva(qoj;lue between a negative and positive charge along the line joining the two cha cqo;aoq 9j(v5rges?

  Is it possible to have a +t;fzxnxwsg5 7;r7odzero electric field value between two positive charges along the line joining the two chs7;nz7w5fd + oxrgt;x arges?

  Electric field lines near psitive point dp6-07ezouk ccharges

  The electric field sq8n vh8x piwf7) oe1,vhown

  Can electric field lines iqg 08lolvf9 n:496 ;lwgtkmsdntersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unf6s y78r6er zciform electric field. Give a statement concerni87r cy rs6fe6zng the electric field in the block's interior.

  If a solid metal sphere andwrp cp gqjvrux 7v f+;9/h;2n2 a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the22;f9h 7pwxv rnc/ rjgv;+pu q surface is

  A cubic block of aluminum rests on a;5 dc+v (b7/3-whuoltpeiarceugi 80 wooden table in a region where a uniform electric field is directed straight upwardtl c/weigupu -vri7(;o8d 5hac 3e b+0. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elect67lp glq0y:k nd+h(wa xwby nm(u.0; gric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gro8cy. gko; nn .:sfg5aqk w4o-zunded. As compared to the case without the hollow sphere, the electric5 8 gkqw;sgnyknz.a: .4-fcoo field at a point directly above the hollow sphere has

State three propertiet 6r:8 +rhdvtvs of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron i d3gica-w+ c(vs $e = -1.6 \times 10^{-19} \; C$. 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 mi1w(upud.r 1 ihz oa;*ore protons than electrons does this irw 1 pu;udh*1z.o(aipiece of plastic have?

  What is the charge on 1 kg of protomuzhzfl)lqsb3e *+*6ns?

  An atomic nucleus has eepxbxoa2+,ty7wdq6t) o,+ /+olb rw ldfm9*a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1u* nk h3/rmmml).hzop-sdn0(.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnimmm3)k(psh n/n z-0rd*.hl uotude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between th fs*yb+/jvc vya/;v4pem is 1.0 N. What is the magnitude of the second chs+j4*ba vcy;v py //vfarge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are theyux927 ieieo8d ?

  The force between a zoe.)m8xl-au.9ixi tb qnq/ t5bee2 3$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiy9a uemzot h r.j34)6oence a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betweenyjuezoo.ta)r 6943hm them?

  Three identical point charges of 2.0 mC are placed -ki:+vt b:m sze)aro7ohyl7 w(yoi75 on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mo 5bk 7o:til+77 oszwyh-rvym)ea: (iark. 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-axisenb+ (.k( p qdsogy:zf5md*s4. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right atkd* o4yzn(p: de5( + .gfmbsqs 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: Qz*xp l /z)(w2zw 4gv+i (acnvz1 = 2.00 mC at x = 1.00 m; Q2 = 3.0n v*pg(( wcv/4a)2 +izz zzwxl0 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 placed at tjl(a;/ded4t *qwc w. mrcp 6d6he center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostaderdw*p;d j cmwa4t/l66c (. qtic 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 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 1 l:drcd ii;ww15iff.nC is at (0, 0). Whacli51f1dfdi.rw :w i; t 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 ,i+d0* hook; vlocxy/ nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forcehoi yk0 + x;o,cl/od*v on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed ( ,lmmddlw 9f;at the vertices of an equilateral triangle which measures 30 cm on a sid (,mm ldlw9fd;e. 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 m. At what poxf)+ sf* w-pvqum4r1;oysy,s int, on a line between the two charges, would),frm*yss; +u-x w 4f1sv yqpo 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 thm/*yz+j* beeuezkllwko54 *)/l pb jsa.6, yhe origin 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 foblh4*5e.kea/u6+lbm z,e /w *kyoys* jjp) zlrce on it is zero?

  Charge +2q is placed at the origin and char,10s71wgi slq jq4 w:nfewz g1ge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zezfw,q 17ies14gjw1wqgns0l :ro?

  A copper penny has a mass of 3.0 g. A total cw,z(6r9kn wrda;tw-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 a g0nm3 nqv;o7xttraction of a fixed proton some distance abgn;q37n 0vm oxove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pn .qnhua;9msgc ,c.y +gf7sk. oint by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between themans.fnc9k.q cyhu+,g;7 sg. threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a 9any lw c gp i.y9,qud/ oa9bq+hcm5.*charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleusm/c qui o9ayp *+l q.h9y .w,9ncbagd5?

  What are the magnitude and direction of the electric field at a distance of dsh53:fu*.5 azx seqm1.50 m from des.qufx*5 5 zh:3 amsa 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ogt 5nzp; qzv le+i29w9f the electric field at the location of the ten5+vl;2iz z9peg 9q wtst charge?

  A 5.0-C charge is 10 m from eu 29, 0kt)xcext:lvfa small test charge. What is the direction of the electric fielduvt0f )9xe2l e:xt,ck?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudu h(p +askq0dit; ,5j/n9a tpqe of the force experienced by a 1.0 nC charge placed at the ljquspit q+a05(p;,n kt h9a/docation of the test charge?

  Two point charges each have a value of 3.0 C and are separated bynt*; fry5b8 fug *x.ol a distance of 4.0 m. What is the electric field at a point mx*;gyot f*ub8. fnl r5idway between the two charges?

  A 5.0-mC charge is placed at the 0 cm 5fdvw6)bn lo.mark 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 fl 6o)wbv dn.5mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stic teey* zp2lgdh.9z 2x3k and a -4.0 mC charge is placed at the 50 cm mark. Atd xy3 e922ezhltg zp*. 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 abi-8mir6p:1 eifg w1o xorp5( 2b7mgdnd x = 0.20 m. What is the magnitude of the electric field at the point midwp1bwg8 m7 b1ero roxfg26di5ipim( -:ay between them?

  Three 3.0 mC charges are at the three corners nfq:)c( jfih9x 3jt :yof a square of side 0.50 m. The last corner is occupied by a -3.0 mC c3:qi tn )j:y(9 fjxcfhharge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at p+gu 0k2q q 1p(4x,md0tiz drjthe 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,0q2t jmkix04+pgquddp( rz 1 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 ahp g5octn3-/-(xv uf/s:juqtz qux4(y 1o- gis placed in a uniform electric field. What ispoq:t/jf(guhn-zut 5/qa1 (-cx xyv3 4 usg-o the magnitude of this electric field?

  A particle with a charge of 4.0 mC has asvy+u* wfx zrbs7:nr +i8/h6tg 2+mmr 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 f3mt wm,sw9ttlcr.1 2x v 1/ympield of 6000 N/C pointing downward. What chaws, m931 lrtptm /cywv2xt.m1rge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge ofz4) j4 k1wltda -2.00 nC. The ball is placed inside a uniform etz4 4lk1)djw alectric field, and 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 charge of +2.0 mC. k1fskjevn/5ixz1, / s What is the magnitude of the electric field 5.0 cmvf//s es,51jkx i z1nk from the sphere's surface?

  A metal sphere of radius 2.0 cm carrijqi;7x .rwh+cv;9y7z(py kns,bo gj1 es a charge of 3.0 mC. What is the electric field 6.0 ccy,;b.nj7r;z79vo sk ix+g1yh wjp(qm from the center of the sphere?