State the law of conservation of egdc 4tg gep( o-,p5jswdz:e:c12 8baolectric charge.

  Is it possible for two negativ 7ybh-n b50pq (beyypj5s.e4e e charges to attract each other?

  Is it possible for a positive and a negative jb4nlz:84ofzcharge to attract each other?

  A glass rod is rubbed with a piulde-3l yt sr,-b9d5uh;4z xtece of silk. During the process the glass rod acq bl,-3t54r de9hzd;l uus-yxt uires a positive charge and the silk

  A proton carries a

  The model of the atom showo s:ed *q /bdux;4jn3ss a

  A neutral atom always hashaj s01hq2c;n /r s/uqu+;i0xslbj+ m

  An atom has more electrons than protons. The atom isy ,9j2e3 uf5cheuytl,f usl2u0r*so4

  Materials in which the elect(u6nrqe05omw,8 pn ewrons are bound very tightly to the nuclei are referred to asnw8pweu, (oq5r0 em n6

  Materials in which the elec b6 fggflj obbu7y00d ra5o 1ah:4h/5ctrons are bound very loosely to the nuclei and can move about freely wiab b c6fb/4g0hlr o :5ahofy715ug0djthin the material are referred to as

  A negatively charged rod is brought near one end of an uncgr0ek5ukph-4xk p. b 9harged metal bar. The end of the metal bar e-. pr0hbu 9gk4kkp5xfarthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plackk ;y5 yr :w9cq jv99i5iqea+led near each other on an insulated table. Sphere B is briefly touched with a wire th +q9r95w9 kaliyce :kyvi5q;jat is grounded. Which statement is correct?

  How can a negatively charged rod charge an electr3 e 6vvprf*.iuoscope positively?

  An originally neutral electroscope is briefly touched with a positively chargs a4zas.t42i69 lqonizp1zx *ed glass .ol6pt2aizzszax14 in s4*9 q rod. The electroscope

  An originally neutral electroscope is grounded briefly whilu4e9)88vle /ygtnsd 1w5ds xl e a positively charged glass rod is held near it. After the glass rod is removed, the electrol8/e8 d x1vgwt d9ne)ussly45scope

  A positive object touches a neutral electroscope, and the leavev y1q6;q9hci)s3fu x-qj)is qs separate. Then a negative object is brought near the electroscopes1 9qqq)i)jsxyv-3 qhic f;u6, but does not touch it. What happens to the leaves?

  A large negatively charged object is x/rp :r (wkn,n2b prb)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 (, rkbwbnr xp)2p/n:r 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 tu02geyi3b5zconstant $k$, which appears in Coulomb's law?

  Two charged objects are separatf, uoz m:ju 0y5r(o9t(t)cqnved by a distance d. The first charge is larger in magnitude thvu: yozm (05u )( ortq,9ncjtfan the second charge.

  Sphere A carries a net charge and sph*ard5 :s rh/1ejllg/ sere B is neutral. They are placed near each other on an i/15 ds agrl/ejs*rh l:nsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the ccf6 w h*)z 16mkjgcf4,o wgv9vharges on both objects are doubled with no change in separation, jf4h vcgfow6gkcz6,) *1 wm9vthe force between them

  Two charges are separated by a distance d and exert mutual attractive )n2,p6v etbbkj hvm8c ow.x1. forces of F on each other. If the charges are separated by a distance of d/3, what n tb.2 vjke6pw.),xo1cvmh b8are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to th2d 6 abp;wj* axbky)3xe force between them if one charge is doubled, the other charge is tripled, and the separatio3 jpd2 a6xy;w bab)*xkn 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. W x 2omxhb.+/gky/2jor)p(eqv hat happens to the magnitude of the force on the proton if a second electron is placed next to the first electro2xvhy p gm/ox2)/roj +ke( bq.n?

  An electron and a proton are separated+ sgobef8j83.sctb; g by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the p+b3 ;f ogs tjc8bes8g.roton?

  An electron and a proton are separated by a distance of 1.0 m. W)*yrpf7szslz(a5c id 9n z fc,.6njp1hat happens to the size of the force on the proton if the electron is moved 0.9prs) z.*(if,j la6cs 1z5cnznfp7dy50 m closer to the proton?

  A point charge of +Q is placj6iw-:zpx (ug:z(dr- 8h 6 qhcdlnr+zed at the center 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 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 iduzn+ rzqx 6 d8ip l6h(r:hgz-:w(-cjs 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. t.l, t1tswzhp9,jq h*ens- j5 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 magnit 9s ljeh,ttn5 ,wj*t1sqph z.-ude 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 vectorv77mbn kt 2iv7tvq.4 j?

  At twice the distance from a point charge, the sj.0q /eii/d q86*c 0i w9qjxg- wwzwadtrength of the electric field

  Is it possible to have a zero electric field value between a negative and po+cl h6* ;e,rhnhzmhp,vo .2 ocsitive charg,czhoer lhv6p2 mnch;.,ho+*e along the line joining the two charges?

  Is it possible to have a zero electric field value bi rjr8. u-(6vsh6pkljetween two positive charges along the line joining v8kr ir p6 s6j-.(lhjuthe two charges?

  Electric field lines near psitive poiq0ubd( rwv ;vin6sh wj6+0xb1 nt charges

  The electric field shoscthgwo+)+ s- w1r(n2r8l wacwn

  Can electric field lines intersect in free spacem*l,d;xkr s,c u/jg(a?

  A solid block of metal7zo ,0ttc )l,qm9cmvm in electrostatic equilibrium is placed in a uniform electric fie tq7,)9 ol,tmcmc mvz0ld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of e9i ibtqw+/ 95ri.ev gtqual diameters are each given the same charg i+ q./wgbit ir5etv99e, the electric field (E) midway between the center and the surface is

  A cubic block of aluminuc-;4xc bn,znc m rests on a wooden table in a region where a uniform electric fn;cx bzc, c4-nield is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is inlxxlc l0e5dzx0 hp4 7l:+l mu0 electrostatic equilibrium near an electric charge

  A positive point charge is e:g / 7mrjnafam :i(rp8 yq35bhnclosed in a hollow metallic sphere that is grounded. As compared to the can/yj: 8gp3ra qrf7 m5: aihb(mse without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conducrk+didy+: /vmtors in static equilibrium.

State Gauss's law.

  The charge carried by one electron iss5hhes(ink 78 $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net 0dgqm 8*u 2r:ulcn vc+ :x9drhcharge of +2.00 mC. How many more protons than electrons doe 0 *v9+dc2mrq:8urcnuxhgdl :s this piece of plastic have?

  What is the charge on 1 k/j.p l,lbhab4 g of protons?

  An atomic nucleus has a charge of z5:ota1:my w drin 61c$+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5jzoe w83c 7d:q cm, have charge values of 2.0 and -4.0 mC, respectively. What is zce7o :8 qdjw3the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 727sz8r bpa q+croes )N. What is the magnitude of the second ces rpa8+7zs 2)c7rb qoharge?

  Two 1.0-C charges have a forcy50k+ 5 koeoq i;s/uake between them of 1.0 N. How far apart are they?

  The force between a t4(wokg cg-p 3 -flse($30 \; mC$ 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 rnq4 /dgt4 .k)t zzr kwryo,1l7b2lm(force. If they are moved to a new separation of 8.0 cm, what is the ele2y/ 4k1rlmw, tqto4kdnz7)rb.rgzl (ctric force between them?

  Three identical point charges of 2x7q*2ec 3m sto.0 mC are placed on the x-axis. The first charge is at the origin, the seconoet*3 x 2sq7cmd 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 of +2.0 mC is plvz /m2fa90yhlaced 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 the electrostatic force which actv2a l9y /hfmz0s on the charge at the origin?

  Three point charges are located at the following positions: Q1 qx,p5w5em p c a01w3hy= 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x c0 5w1ea ,xhy5mpw pq3= 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 center of a square, and z s z(o 4yz02aiwlu)vdg: 4yj(c1unm, 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 cev:0gm(a4)wizzn2(cu4 s u o, zlyyd 1jnter. 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,vav52 ,- tcb i7hzlh/b 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 h/vb,bi2lz7a5hc- vtnC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 th wa2p eq):tr6 -e.bg= -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 aet.qtr6)2bhg- :e w p5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertills8 ;q7yg nw-ces of an equilateral triangle which measures 30 cm onlnq8 l; 7g-wys a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q a7y sgdj(q7g/iuwcok(z*4s 9 snd +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force actingw7*d 4zcuos(7 (/issyj9g gq k on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. s bbl(eq)8+onwcc 9z0Where on the x-axis can a third charge be placed so the net force on it is zerobwl o0esb n(+zq8c) 9c?

  Charge +2q is placed ar/o*et)nmpp: x(/t yf-dp n q1t the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is z xpy1om(/tq :n-p)dtfr /e pn*ero?

  A copper penny has a mass of fki12 7;y80bxbxhewv1 i bom(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 fg+ v q+ hqzp6wt2.exz1(gyzl(v5p ix/orce of gravity by the attraction of a fixed proton some distance above it. How far above thgpzg(pqv (ywlv+.xx/+i z6qe t2h 1z5e electron is the proton?

  Two 0.20-g metal spheres am p2zw- ju-v+3 7b-zw ixzr.nire hung from a common point by nonconducting threads which are 3 xw3pb 2-ivzwzz+7j- .nmi -ru0 cm long. Both are given 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.ko1 *kskn4j9tu w 8i(0fex66h/sq yjv What is the magnitude of the electric field at a distance of 1.0 m kxso s0jf6h9 e y 6wt/j(*4ukn18kivqfrom the nucleus?

  What are the magnitude and direction of the electric field at a distance of cvuj vrz 8, gllivdf2 c842/y(1.50 m f4u88yr 2lclzv ,jf(gv/ vi dc2rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge.o-a 4(w;xt5,g vf,ari(cmqngcrv v ) v,3w m(p What is the magnitude of the electric field at the location of m5,w ,omgvnc 4xr ,qpg) 3 v(vrta;(iwac(-fv the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is thet yyimq n)x2 ;z5m65gl direction of the elen yxzqy5gmt2ml)5;6i ctric field?

  A 5.0-C charge is 10 m frobjqw1tl k8z 7 hoc6/b;i2sf9xm a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the teh lxfoq7t i2;1bz cw96/ sbjk8st charge?

  Two point charges each have a value of 3.0 C and are separated by a distance ofrs- 3zy- r.uvcq*w3 yp 4.0 m. What is the electric field aryp3cq- u3v rsz*y- .wt a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm ma5 d/ot egz9shy42n+tx rk of a meter stick and a -4.0 mC charge is placed at the 50 cm t5xhsgedn/4t zy+o9 2mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm , c d(8(ojlr;pad+lqqh hc8v; mark of a meter stick and a -4.0 mC charge is placed at the 50 ahvh c;q8qdpdlr ;o, c(j8+(l 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 = 0.20 m. nutw6 0g 5)xpy.r0ydi What is the magnitude of the electric field at tgyrt0u.i n 6)yxd 0w5phe point midway between them?

  Three 3.0 mC charges are at the three co*t1tkj fq t-e8/q58u +snwhla vc1j6hrners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charg jw6/c8vu *hentskj 8qh5f +lt1-a1tq e. 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 the corners 2dpdqz7/jr z;* 7,r8 ovjxvqa 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 ovr,;8 z2 7a* 7vddjzq/qjxro pf 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 h p4o6- puj,zyuniform electric field. What is the magnitude of this elect, zpy-u46pohj ric field?

  A particle with a charge ohv+tn-79(bd2 x bfdsef 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 mass 0.120 g is placed in an electric field of 6000e1(zcddq.dcv5v 8u)sfoh di vza 95 56 N/C pointing downward. Wh5 1)a dvcqosev9zfd5(hc68vdzu. i5dat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries as3f 7 *i6rm .d9 ri73swnlrrxu charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude 3m*3rsfw6 ur xnl.7s9i r7id rand direction of the electric field?

  A metal sphere of rad8udytvgn +bm4k j5j -0ius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric fielgu 8 y-50m jnk4bvtj+dd 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 the :r3/ukh)hxlbu 7rj ,u electric field 6.0 cm from the center of the/hhj7br,ku)uux :3 rl sphere?