State the law of conservation of electc--pmd b f:my(ric charge.

  Is it possible for two negatiar( 3ymw 19dinve charges to attract each other?

  Is it possible for a positive and a negative charge to attract each ot-eyg: 3fm)v 5(yfc 4 suwxn-wkher?

  A glass rod is rubbed with a piece of silk. (yjui5yge7x07 hd8b y)*gsl a During the process the glass rod acquires a positive charge yi)5hs b j8yygx(g7dl0* aeu7 and the silk

  A proton carries a

  The model of the atom sholdjjlk mygzn6 :+b7,;ws a

  A neutral atom always 60z yq*igy (ndhas

  An atom has more electrons than protons. Th/69oh4 gc7pcuflv:ctpm j, 0me atom is

  Materials in which the electrons are bound very tightly to the nuclem4k1 s:,xpzoli are referred t4l 1, msx:pkzoo as

  Materials in which the electrons are bound very loosely to the nuclei .kmks4atkst9;p - 2o 4hlj3k nand can move about freely within the material are refe tjnkpsk29kt-s ohk3 l;44m.arred to as

  A negatively charged rod is brought near one end of an unche vd;maco2w4;6hd 8aharged metal bar. The end of the metal bar farthest from 62adcmh a;w8 dehv;o 4the charged rod will be charged

  Sphere A carries a net positicn,zy (n 51ch*ttyc) y0sf6 ; xy/gk-plvior- ve charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that s0y )ncf-nl,5zc*h/-k cxprgyt1 ty oy;i v(6is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positively:wvgb2e wg -4oggd3.g?

  An originally neutral el we*f)h,bkjcav2v + s-ectroscope is briefly touched with a positively charged glass rod. The electrosc eha-b)fc*w 2v+j k,vsope

  An originally neutral electroscope is grounded briefly whil4cclm g/wh p::e a positively charged glass rod is held near it. After the glass rod is removed, the elml:c:4g/ cwh pectroscope

  A positive object touches a new; 0pu.pn+ hr*o6octl utral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but dhn ; upp*r6.tw l0oco+oes not touch it. What happens to the leaves?

  A large negatively charged object is placed(sp7h bq ul,n *u0drqj:p;lb) 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 thepq, nd7ljq( 0lb h)*p :rsuu;b 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 s(n6rhw qw,t4 Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charjfgly+g+,+tu w ge b 3)0wrx(*ezxqa4ge is larger in magnitude than the seco g *tegel,y3w( 0j+fx)bra4wuq+z + gxnd charge.

  Sphere A carries a net charge and sphere B is neutr4r* ab9mja4swakxf0ehvf- jw +e+7f9al. They are placed near each other on an insulated tabljk+x*eba+f 7vaf mf s9440wh j9 aerw-e. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a.,p2a*ksl k7tbgd f/l certain force. If the charges on both objects are doubled with no change in separation, the force between them,7.asll pd f2gbt k*k/

  Two charges are separated by a dist3 jxcqt ef9m 88 3f:7m+csl49fmgfa gcance d and exert mutual attractive forces of F on each other. If the charges ag +9c:c39m glff8em8t7 m ffqcsx3a4jre separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Whatk/jwscy** yai8 z2vl t9p. q8x t;oet5 happens to the force between them if one charge is doubled, the other charge is tripled, and the sepla*2wq9z*5vot; t 8iktxs8pecy/jy .aration 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. Wh) q; rqqy(;uah1dm-ohat happens to the magnitude of the force on the proton if a second erh; q(a -1 yhqdu)qmo;lectron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to 6rp lnqp3tvm3s m6b8mp-k7r. the magnitude of the force on the first electron if a second electron is placed next to the prs3m68r6m n q-3 t.b ppmv7plkroton?

  An electron and a proton are separated by a distance of 1.0 m. What happens p70a w9u6x.yakeg n 9oto the size of the force on the proton if the electron aaw 0nxuy96.pg7 e9k ois moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the cente4nh1 7, cyehehr of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electroshec y,ne17h4htatic 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. Wheugar:bah )9kv( 66bo rn 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 bgv (6:aou)h9b kar6rcharge due to a third charge of +Q placed at one of the other vertices?

  Which of the followincecm/.nxt 1gn.q,2 xv n12 wsyg is not a vector?

  At twice the distanc: kbi 6 :9my,pow3pz3v8isew qe from a point charge, the strength of the electric field

  Is it possible to have a zero el 56d3av.t xfxjectric field value between a negative and positive charge along the line .36jaxv dxt5f joining the two charges?

  Is it possible to have a zero electric field valumg0mty f8b,f 6e between two positive charges along 8m 6gff0y,m btthe line joining the two charges?

  Electric field lines4-v -jla uxudki :x4g96 ;thbk near psitive point charges

  The electric field showh5ed jok 34u4t jyr65en

  Can electric field lines intersect in gz8 7o0t,f+j ; ngerhin/f5kjfree space?

  A solid block of metal inj q -.c.o s0+t,fbff zqa* ;d *me0yata28mcti electrostatic equilibrium is placed in a uniform electric fieldtm f0t0ea+f2yq*.msc,jaqadb z -tf .c8*o; i. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diametersp zmuw)42gz 0k are each given the same charge, the electric field (E) midway betwpzukz 0)24wgmeen the center and the surface is

  A cubic block of aluminum rests on a wooden table in 1pxtjq r; 89)wmenflcg 56q+ aa region where a uniform electric field is directed straight upward. What can be said concerning the charge on the bl1xml+qq6)en t89w5fa jg c;rpock's top surface?

  If a conductor is in electrostatic equilibrium nj 9 u;abny0q/6,-(ojq pnif hgcbb3kbqh //(rear an electric charge

  A positive point charge is enclosed in a hollowq8ccus j;tc 0-;ts6ic metallic sphere that is grounded. As compared to the case citc6jss;tuc8q c0- ;without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equh3kq-0 c0(bri g4grq bilibrium.

State Gauss's law.

  The charge carried by okd3ui)8cup45t a1 pgz j4(pq ane 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 a1 nrs3u-ra h-,hl6qsv net charge of +2.00 mC. How many more protons than electrons d nhs-rv3h6lua,s q r-1oes this piece of plastic have?

  What is the charge on 1 kg of protons?ffeym 5,u70mm ,fwn,r

  An atomic nucleus has6h36fel iv.nak 7a1vo;- o .djjzcee* a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sbc3s7yu(t y6d eparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respec6bu(3tdy 7ysctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwea.h xle8f8gao h4q)a*:w+ ww: 8aulaaen them is 1.0 N. What is thhhaex4uw*oa wga)lfa88 la +:8a :. wqe magnitude of the second charge?

  Two 1.0-C charges have a .5:hp-h :rpq4ava/zjfzgq b+ force between them of 1.0 N. How far apart are they?

  The force between a :gku1ha 53loi6*c bqw$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience q+ 4*99bkni6epq v tpv1/r5mj ks-qkea 1.0-N force. If they are movedqep-pmt b6+ n/ vk sieqk45v 9k1*rj9q to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on thed.zaa1yr-jpb 95.dz e x-axis. The first charge is at the origin, the second to the right at x = 50 cm, a.y pz-ab.dz je 951radnd 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 o23) ttla bj:qis 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 the electrostatic force which acts on the c3al qotj b:)2tharge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00p7m;gh5k 3yl p mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.07m; l5g3 yhppk0 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 a second pdw v.xf, .iy4 5b 2krir5m-hbjoint 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 force that acts on the cent.bji d vbmf i.x wy552r,r-4hker 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 nCfkx7 )fdmvgc ,l9 -fb+qyrad 7 5kuy-2 is at (0, 0). What is the magnitude of the net force on the 5v+ygfk 7b-m2lx-,d7 c9q raufd k5y)f.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 5fn0nzz7tt m *2b3mpnk6*doh 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directof*3 k7 b* p2nn0h mtnt5zd6zmion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices odlrr7i1z ( i+ef an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charg7ir ze 1r+d(iles?

  Consider point charges of +Q and +4Q, which are separat3(-afmt /twbcj:e8 c mhjt3-ned by 3.0 m. At what point, on a line between the tcm cthtnaj8 -: mf3tjb3e(/- wwo charges, would 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 the originq1vf9oze(.ihve b-- q 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 force on it is ze1vqzv.f- bq h-o(iee9ro?

  Charge +2q is placed at the origin and charge -q i hc v*s-azeh1(s placed at x = 2a. Where can a third positive charge +q bhev(s* hz ca-1e placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A to 2e -sudg3ydre +k9di9tal 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 gr: b:y vyito6m(avity by the attraction of a fixed proton some distance above iobmvyt y6:(:it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductiu .vj pa0w6z+r/j6a0b lr8:hj w;h toong threads which are 30 cm long. Both are given identicalh6j b0h;:rur60zj8w/p .tojaw+a l ov 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 axsbj0r:3g,z the electric field at a distance o:30gxjab r ,zsf 1.0 m from the nucleus?

  What are the magnitude and directio 24whet65kak gn of the electric field at a distance of 1.50 m from a 50.0- 2k5ke4awh6g tnC charge?

  A 5.0-C charge is 10 m from a krk4ti9alc2lw c02p/ small test charge. What is the magnitude of the electric field at the location9/cpltw lkri0a k224c of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the sj2n9.zof/ltdso /a) electric fi) nj z./f2sl9oodast /eld?

  A 5.0-C charge is 10 m from a small test charc*vyd7l ma;s gi 1. p790balrqge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location m;a170*7 l9ycp. dvrgsilbq aof the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dierpd0 q:c)/wh /2ntv mstance of 4.0 m. What is the electric fm:/wqt en/ d0pvrh)2cield at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.l4uc f5 :7e- knv n*sd*uso1wnp-ue e.0 mC charge is placed at the 50 cm *75k*c. :usse unend1v-4wpu fo- ne lmark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm marl+74ny5eq( cle:*xd5b:xo ab8 vizqkk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zerolabqbd: e5 z+8(clo4i:e5ky*x n7 xvq ?

  Two point charges of +3.0 mpr-)w;le du:6gyi4x dob2 6 lkC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of th)ywb;peud4dl rl62ix: 6gk o-e electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0a3o e nak3ht*4.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fieln334tkhoa ae* d at the center of the square.

  Consider a square which is 1.0 tf*udyy b5d(1 m on a side. Charges are placed at the corners of the square as follows: +41( dbfy tdu*y5.0 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.l x;v ++7mqvzr(. tfap0 mC when it is placed in a uniform electric field. What is the magnitude of this lq;mv7t.xap ++ fzvr( electric field?

  A particle with a charge of prs.6ht-k3 eo 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 electrx zbxqykx *u.e)4 mu2+ic field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be sm* b2xeu)x4.qkz y+ xuuspended?

  A foam ball of mass +mof9 2mn2b ..qn*h n;pbtp oa0.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravityba9mn2tno*+ q2pf.m;b.o nh p. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnit(l kvuvt)fj f0a98s z0dc)h w3ude of the electric field 5.0 9)3hw v8fulkcaj)f z0t(sdv0 cm from the sphere's surface?

  A metal sphere of radius 2.0 v-vcuewl03vumj7 e *;;aj so/cm carries a charge of 3.0 mC. What is the electric field 6.0 cm fs/30la ;-mvc vu;eeu *ojjv7w rom the center of the sphere?