State the law of conservation of electric charge y1cmqass49oj: 6*sd*j c. oww.

  Is it possible for two negatin9r-: aee(ua mv;lvdmc-7f. ove charges to attract each other?

  Is it possible for a positive a8akddpy7qx20p1u 4 8xt 0uozez)bc d:nd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During 4x 0rj+w9nfxgpl/ph d-i .5gk;nz -m pthe process the glass rod acquires a po 5 lxd-pjw kmzp49 g/+.n ;0hgx-prnfisitive charge and the silk

  A proton carries a

  The model of the atom shows ah;m za) k;/v7 uaqjlcdex8p)(

  A neutral atom always has+pa:e3aguq 4fdvno7tgit 5ntq,j 1 40

  An atom has more ele(*gtwe*zro *2a uf( lzctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to f/u mgj14p2 zfzf.8glw8,jhv go5h9y the nuclei are referred8gfz.5gh p2jw9zjof/u 8lhfym g4v1 , to as

  Materials in which the electrons are bound very looselv+z 1ifca 6mjv91to*a9 r- fpry to the nuclei and can move about freely within the materia96 jafivp 1oam9tz c+ fr*-vr1l are referred to as

  A negatively charged rod is brought near one end of a fqxcai) xjkxx :(v:2:n uncharged metal bar. The end of the metal bar farthes qic:xk2ax)::f (vxjxt from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Thz 0kg8)4qjyqjac c 21dey are placed near each other on an insulated 8cz1jd aq kqjc)y42g0table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positiveoy6c/ 2afu+b tly?

  An originally neutral electroscope is briefly touched with a positively cha grw k.g/z0opv,8h h5erged g zrg8,.kh ogw 0eh/pv5lass rod. The electroscope

  An originally neutral electrosqw 5-304yq0vx c22od+titcdvg w*op scope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the eldvxo+tq2soyvg4w3ptic c- 5 0dw q20*ectroscope

  A positive object touches a neutral electroscope, and the leaves sqkr.cz-wegs)m37 2by eparate. Then a negative object is brought near the electroscope, but does not touch it. What happe .b wks3-m cgqe2z7)yrns to the leaves?

  A large negatively chargedr ehf +r..*vc4ue qq,1kaov;c object is placed on an insulated table. 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 is the fi; o.,*r+caqu evrhef1 kqv.4 cnal charge on each ball?

  Charge is

  What are the units of the Coulom)-l7zexu6:i c/urd8 0:igbg g sar:lgb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated b8qgqbaw.* v:r7f5hxtg v 2p i;y a distance d. The first charge is larger in magnitude than the pr8:hg fbt5v v2* .aq gi7;qxwsecond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nqy9f8qpy7inu+e ;0f vear each other on an insulated table. Which statement best describes the electrostatic force betwv+pqnyyqfe9 f u;70i8 een them?

  Two charged objects attrac*6a.jb7 fe 8rgbxr .mnt each other with a certain force. If the charges on both objects are doubled w* g8rb6..bae m7 nxrfjith no change in separation, the force between them

  Two charges are separated by a mx /( a:8rrvm.ayyko2 distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance oyr:8/.yvo a2mx (mrak f d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happef4nzl b:6 uwnrpw s rm)-oh+:)ns to the force between them if one charge is doubled, the oth6l-pnr wsmo) n):b hrzfwu+:4er 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*vaza4vd fq 9z e8t(h1.0 m. What happens to tz fav1e9 4hv(t*dqaz8he magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by wob)swi1 p k*3a distance of 1.0 m. What happens to wsp)b k1 *i3wothe magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated b4eif( qip .0 se nsknc+vn5;/by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.5;5nn(nc q4s/ evfp .sib +ke0i0 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Wp2 qdck* kog4 ds.;b9s:+xno+hdi-rphen a second point chargrbkd +hno q* -sxp;dio g.s+p49k:d2ce 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 charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. fzw.*nh45 x a00 u)hzddqxih3m7e jv-w h9h8 r 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 onedwah0n f0h 8vj7qu4* whx 9rezid5)mx3 zhh -. of the other vertices?

  Which of the following 01qteeqb2t:)zkuqg 9 is not a vector?

  At twice the distance from a point charge, the strength n5d;tr w1 n:*d+ axsj0bdcwi( of the electric field

  Is it possible to have a zero ele)r eu.s 6e;sxsctric field value between a negative and positive charge along the li.esx6u rses;)ne joining the two charges?

  Is it possible to have a zero electric fie05 bkk(l09wixop( pa tld value between two positive charges along the line joining the two chargip (b 0l5o9tpkk0 (axwes?

  Electric field lines near psitive point ch(h3u,sy- 0/:t( 8lmknohsilblz j 0 scarges

  The electric field show,ck; 5v6txlq-i yp h+fn

  Can electric field lines if emkw4q j7b1 25t*cnentersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in rx oyv 28 b5a :.jpnjzmu,0bk:a uniform electric field. Give a statement concerning the el:y 5 ,bpuoj.0:knmxvjr a28zbectric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eachsjmmqo7 eq67n)0,k q,a zsw0 m given the same charge, the electrq anommm7ke,7jwss 60q,zq 0)ic field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a4 swedwde qfsa(l-v4y+t( b3 ( uniform electric field is directed straight upward. What can be said concerning the ch(3fy(v 4t-esawb(dl4q d esw+arge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric cqoay1 +xw*, prharge

  A positive point charge is3la noa:s2n q0a;((sttlsnf : enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the els:s 2na; ( 0otln:salqtf3n a(ectric field at a point directly above the hollow sphere has

State three properties of cojjeg0(5+ 6.qwyuva s 6e ocmg)nductors in static equilibrium.

State Gauss's law.

  The charge carried by onvby96r7s b uk5(v4ra. ibw l3ue 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 more protons a5afr mz0j+fpq23+ 4-v p pzeuthan electrons does this piece of +eujzfzmq5- pp2a34pvar0 f +plastic have?

  What is the charge on 1 kg of protosh7 )ooye(bo1 ns?

  An atomic nucleus has a chfnna 0pb1)*jcp+lb k :arge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated b k;avd k;/kv9;bi*shy y 1.5 cm, have charge values of 2.0 and -4.0 mC, respective;k v*daiyb ;;/9 hvkskly. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second cha *h-/sht q8vmkrge, and the force between them is 1.0 N. What is the magnitude of the second charg- mv8t*/k hqhse?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are theyksn qbhd l1 -h0a9w)nf -qz7v.?

  The force between a xaujn )8 o zex0as.2-v$30 \; mC$ 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 force. Ifowdj3:kq) x4lde9c kf(- a, om/gvde- they are moved to a9j ,/o gxla- )ed ckoew-qd(kmvd3 f4: new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed onae 5ow*hy se86 the x-axis. The first charge is at the o6a8 hw oe*5syerigin, 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-d n-(;xo3g.ozn 1dmvq7(xnp(dte f n -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 the magnitude and direction of thdq;m7(dtd-e(oz-np1n g3(f.xvn xno e electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC atqyl465ey s2x-;ylp jh x = 1.00 m; Q2yepjq2 hxsly 5y -46;l = 3.00 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 the centej6qg/w w:4ryu tbp/9tr of a square, and a second point charge of -Q is placed at the upper-left coprg/ tyj4 /bu69wtq w:rner. 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 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 = 5.02l xcc.qnorqi g(2oc) u +4bk0 nC is at (0, 0). Whax2r() ogcbu kc24oiqql0.n c+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 nC is at (0, 0.1mi1p cbuvucuh; t,+ ;90 m); Q3 = 5.0 nC is at (0, 0). What is the directio u1vip ct,u9bmhu c;;+n of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plax9bnh 5 y65okpced at the vertices of an equilateral triangle which measures 30 6xbhy5 5pnk9o 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 m. At what v3)v(vmgd4)e w o8fxypoint, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acgx v o3)v f84(dev)mywting on it would be zero?

  A +3.0-C charge is at the origin anh:x fs:.0;7 2slfjzae)biq n ld 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 forcen2ll f :sf iq; zejx0a:h)s7.b on it is zero?

  Charge +2q is placed at the origin and charge -q is placq u5-gcdm;iq4 2 qe,x 2kq8)hsd aurf2ed at x = 2a. Where can a third positive charge +q be place5d 4 q gkq ,e r2s28mcauqd2;iuxh-f)qd so that the force on it is zero?

  A copper penny has a mass of681xo+0lbrjpxr z ,q g 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 atsw5hbw0s g;r3 traction of a fixedsr0sb; 5h ww3g proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a com 6oi;pxr513(/t hilydv +zqp dmon point by nonconducting threads which are 30 cm long. Both are given i;3l+tp (p hd 5qiz6divx/o ry1dentical 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 the electro.ohd e3eb0b :ic field at a distance of 1.0 m from deh3o b e0o.:bthe nucleus?

  What are the magnitude and directionqyn +s 2w/4yjn e/,rub of the electric field at a distance of 1.50 m from a 50.0-nC chargeny2jn ,s/bruqy e4w+ /?

  A 5.0-C charge is 10 m from a small test charge. What is thee-x+ eqc7t b4w magnitude of the electric bw7 ct4-e+ex qfield at the location of the test charge?

  A 5.0-C charge is 10 m from a smalld6wfd0qi+6z h9mx. 0bmfjon m.-/7 o ggxmr6i test charge. What is the direction of the electric field?0fh/gr.ofnjmdw oi6+mmmx7-x9q6i d z g60b.

  A 5.0-C charge is 10 m from a small test charge. What is the magnito;e: ,ox)xu ihude of the force experienced by a 1.0 nC charge placed at the locationxu xioh);,e:o of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a1 h4+f2nrs: m0m vr2qc5wa hx*f1njir distance of 4.0 m. What is the electric field at a point midway bet if2mhfn2w:v cs amqnhj 4 15*x+r1r0rween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charg-*xg ya -f9ipp0qsni;e is placed at the 50 cm mark. What is the electric field at the 30f*ysq-pn0pi -;xg9ia cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter saqdol (n ; r5::9eqan/yhyp/ztick and a -4.0 mC charge is placed a:// n;:e ap9nqaoryyzq 5h(l dt 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 s4 ss q:(jp1fc75 zviymC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at thp1:c5 fsq s z4y(isvj7e point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m5c9dfxu873ayab x5v c. The last corner is occvxc d 59cu5378 bxafayupied by a -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 *tgqeaonrgz ;9i* y mv7v8a 68are placed at 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 e;aqri6vg*8t yn*gvaz89o 7m(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 uniform ea +m3h9 xdg8 orlrs4;vlectric field. om8h4 +xr3agv rl;s9d What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has xuqkuz5 fp: 78a 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 fiez 3 shuz1)ges22:a bq;:f3*dpir gvigld of 6000 N/C pointing downward. What charge must be place*gi u3esb:2isfv ):z1rgpaqz23;d gh d on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a char7sw0 *cqe-- l1 t/ g4shasfbnlolrp6.c g:yd/ge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitud c/o17s/.gl a *n0srlgt-hy6cd- wql: psef4be and direction of the electric field?

  A metal sphere of radius 1h(fwr w;-a1*7dlm ezw0 cm carries a charge of +2.0 mC. What is the magnitude of the electric( zwr1laweh-; 7f*mwd field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is thepvq0p mk+uhy rcq43+-jd:: wy electric fieljk:pwr4qduq+p 3 +v-y hym c:0d 6.0 cm from the center of the sphere?