State the law of conservation of electz q 5xu2pr(wgxv9n+qt1rhrw g./e 44 lric charge.

  Is it possible for two negative charg8/ 8as *tuqjmwes to attract each other?

  Is it possible for aj*3pkjhp f nxjru,14( positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. g:k 4ty.33bd -.6hzxyxmcy kf During the process the glass rod acquires a positive cxk -m.d.tyh46ckb : x3y fy3gzharge and the silk

  A proton carries a

  The model of the atom shows a,,sg ejl+zjxcr0x/ + 4x0wgtb

  A neutral atom always haghv*-6um 8hee9b:r f*k d5 l*mwgarv9s

  An atom has more electrons than protons. The y-*/69 v- 7o- g zgswc rsjc(vozp2pvgatom is

  Materials in which theimckw+ 0t 4po; electrons are bound very tightly to the nuclei are referred to aso4t k +i0p;mcw

  Materials in which the electrons are bound very looselyafkiu)9 smn*h3 ete5 23p)wsm to the nuclei and can mo3 wa) 2hk5sme)9*3p en uimtfsve about freely within the material are referred to as

  A negatively charged rod is brought near one cw +18/ni; t8ft xxvodend of an uncharged metal bar. The end of the metal bar fartto/c wx 8v;xi18d+ tfnhest from the charged rod will be charged

  Sphere A carries a net positive charge, and7l)-ofa 0ms n: poagvd* qe8)i sphere B is neutral. They are placed near each other on an insulated table.v)go qf)isnla o-m08ap:*e7d Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elejxq k7t.o1n9im ,4c woctroscope positively?

  An originally neutral electroscope is briefly touched with a positivel2w02vii b t ;g9 ejl,q)lmxwm.y charged glass rod. The electl 09ww;jv2il2,mmegb i).qtx roscope

  An originally neutral electroscope iz kmd5sn ts6 61 )e-cz*xtb1tus grounded briefly while a positively charged glass rod is held mtuzb-nk16 z*tt xcd5se1)s 6near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and eqs0d9 qe y jvx*:g:u4the leaves separate. Then a negative object is brought near the electroscope, but jqs :uy9eg4q ve*dx0: does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutra;w .. +6oierf :vcbpgel 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 touc:vf 6e+bw;i. geop.crh 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 y8/6,6 swbwuq px6xidconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firjpc rsw:26x a(-e+ ghrst charge is larger in magnitude than the second sxpr(:j+he 2wagr-c 6charge.

  Sphere A carries a net charge li(qp89v)*v8nhvhx -fk 9ubc and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describe*c(9 vi)p vquvlhkfx-nb8 89h s the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chare7c2na q -wfo-ges on both objects are doubled with no chanqw2 n-o7ec-a fge in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive fur ps1*epo5 j*orces of F on each other. If the charges are separated by a distance of d/3, what are t5upr1o** jspe he new mutual forces?

  Two charged objects attract each other with a force F. What happens to th5v55risajj rvu )ju6 *e force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced tjv6 uj*v5 5jsr)ari u5o 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 happey - 4e g/3 j22;iwfokbwdgmvu:r3i n(gns to the m:;ji 3wwg322(ioun4rg/ bed- kvmg fy agnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separatedjrpyl*3 xmtbg o,1828u-faq d by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second e3 du8,gfx2poyt-*1rj8amq bllectron is placed next to the proton?

  An electron and a protoefg,4jbe3yf 8 br o*9wn are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer,bw 8 j3freyegb9f*o4 to the proton?

  A point charge of +Q is placed at the center of a to-a4,mk..ff)zzqu l 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 placeduzof .fqm ka4.lz),-t 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 placedm5o t8 ns: 7fes0*xxew at the centroid of an equilateral triangle. When a second charge of +Q is placed at onemewe5nf 8sxo xst0*:7 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 one of the other vertices?

  Which of the following is o e5wd 0sn(.junot a vector?

  At twice the distance from a poin9yt/vpc-3 ko et charge, the strength of the electric field

  Is it possible to have a zero electric field value between9- lg8la 18kjcfcy3auj+ pp/o a negative and positive charge along the line joajju yacf8col-3 g/ 8pkl19+ pining the two charges?

  Is it possible to have a zero c0 lz1 vc841m,vnzp3xex q0 zgelectric field value between two positive charges along the line joining the two chargescqm013glz4znv1 xzvc ,x 0p 8e?

  Electric field lines near psitive point ch)l.va;ru,1zkjz lh xs* x r;q1arges

  The electric field shown z.+g5 )prxk (23rdyl m1x 1f9cdizlhq

  Can electric field lines intersect in free s: s05vmsfzdq 6pace?

  A solid block of metal in electrostatic equilibrium is sz5vk bx-g mz :3a,h-7t /wktsplaced in a uniform electric field. Give a stat/5 tk-s3wvxz-t7: mgbkh, s zaement concerning the electric field in the block's interior.

  If a solid metal sphere and a holq6sxax 2(,cnry:ea y:low metal sphere of equal diameters are each given the same charge, the electric field (E) midway between a:2s6q:an xe,c yx y(rthe center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wher tku2q9ne5-yapvjp,c2 g u9 :ve a uniform electric field is directed stragk2jt:2uqe 5 -cv9u9yppn a,v ight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near anar;qyom/w y8 jr5(wpfh (//aq electric charge

  A positive point charge is enclosed in a hollow metalliz:nq 7ad/pb068xvdf5d j. xmic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow a:nvb8 d d .idx70/jpzm6xfq5sphere has

State three properties o1 updz-,bov 4aoq+cm 3f conductors in static equilibrium.

State Gauss's law.

  The charge carried by b( .5 e t5drbz4;w9.gf8;srsuk mssna one 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(). jbme n5kvm22pvt q of +2.00 mC. How many more protons than electrons does this piecen(5 bm emv22j q)pvt.k of plastic have?

  What is the charge on 1 kg of 5)w*4w/qel95 y fk hacgetqv/protons?

  An atomic nucleus has a cha2govseru-)sa;0yj u -rge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm 8mwy(g i/:qw+mlvt*qe dw1:8sld :on, have charge values of 2.0 and -4.0 mC, resdqdmlsmq1no 8 : iwyvw+*8w(:g /e:ltpectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from jq4;617xkbiludni )d a second charge, and the force between them is 1.0 N. What is thed1 kq)i4jn i;xd6bu7 l magnitude of the second charge?

  Two 1.0-C charges have a .) aefbvlpcs6 )vh2 )pforce between them of 1.0 N. How far apart are they?

  The force between a 1tf m7j a-hdl,$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencevhwbb. l1qm ai:blt 3mc1-k -3 a 1.0-N force. If they are moved to a new seab:3 .v3bq thi-lmcl11b kw- mparation of 8.0 cm, what is the electric force between them?

  Three identical point char+sgo 9 cd*nj(uawz /p:yyl x24ges of 2.0 mC are placed 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 mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the y4 /p9:xd+syu w2goja*(l n zcorigin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is plan,4dnzxs+x;-)7gt m eyv3qtk ced 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 tq, -vng4) d7kxtz ;+sme3xnythe electrostatic force which acts on the charge at the origin?

  Three point charges are located at the follaj t4uwopc.,-owing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude oj.wup, o -cat4f the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square d*; l1e xlout5*cp7/c bdnf)g, 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 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 corngdu c*dl7eb*1tfxo/cl p;) 5ner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); jpb ms6 9ff23 j:-lzycQ3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on t2pfmljbz9: 3 fjy-s6che 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is atl9vo2 i ;ys,29hestybq.w2b w (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the 2hwoys.22tybsvwqb ,99 iel;direction of the net force on the 5.0 nC charge?

  Three identical charg pq;d1ug1 qu30t1vdt1b w3ruw es of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. wtwtgq1;uv13qbur d11p 03du 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 separatedazj3q(av fmww9r5+pj: 3nv o, 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 electrosta pfwj5 , v3nj:(rqoaw+z9m3avtic force acting 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. Whiex)r5 pt;i74p xkybukw; 4:fere on the x-axis can a third charge be placed so the net forrpk f5k;;x7:te bui yp 4i)4wxce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at116at 5xq3x:k,bh7ncogm q zi x = 2a. Where can a th qz:ia o7c,hb 1 n1xq6g3txk5mird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total opm xhg6lb 8j12f $4.0 \times 10^{12} \; electrons$ 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 thee o1 wle23be*ep,cj 0g force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is theew1 lj0*ec,3ee2opb g proton?

  Two 0.20-g metal spheres are hung from a common 2 gr5xr,sd,gdpoint by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatid,5rsgxd2,g r c 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 o ef uzzq,z(l-*g8m (ynf +40e. What is the magnitude of the electric field at a distance of 1.0 m from (z ze -u,n(mq8 gyz*flthe nucleus?

  What are the magnitude and dirk o-* /89o ztfrli)fwcection of the electric field at a distance of 1.50 m from a 50.0-nC kof9c fwloitz8*r/-) charge?

  A 5.0-C charge is 10 m from a small test charge. What is the m/ ux+(o )mnkz*xkmy l(agnitude of the electric field at the location of the tkzym(m* k/lx x)n+ o(uest charge?

  A 5.0-C charge is 10 m from a smal01zbnf7mlmzd60rt7 y l test charge. What is the direction of the etfrdm0 z 7z7160bmyl nlectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the me5uer0dpg) /w7tk qd v5b )0vmagnitude of the force experienced by a 1.0 nC charge placed at the lo kqguv)5 e0dd m7e/rpb)50 vtwcation of the test charge?

  Two point charges each hek ayuo2pr0*ps64/ oi 8leo/j7lhu;a ave a value of 3.0 C and are separated by a distance of 4.0*o ks0eyuae 2jho;a7po8l/46 liup/r m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed au7l*g xt;s qs*t the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field lq*;su sxgt7 *at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -44 n sup* 3egn70ib,(we.dfqtz .0 mC charge is placed at the 50 cm mark. At what point on a line jszqw,f0dn.7bu3 (ite g4pne* oining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placedsk9mea85c6 fo 8sf6j m/ gl3qu0 cgsp) at x = 0 and x = 0.20 m. What is the magnitude of the electr )ojp6 8/sesl 9qgakmf3m 8scc6u0f5gic field at the point midway between them?

  Three 3.0 mC charges are at the three cornersw e.)q(gmrp -e*kre) x of a square of side 0.50 m. The last corner is occupied by a -3.0 )xepe)w.- q rr *gmke(mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side.9pe,gv u ,l,lo uu9/tw Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 m u9uutlle ,9/g,,v wopC 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 uv1)h ol zvkd,9niform electric field. What is the magnik9,vh)vl do1ztude of this electric field?

  A particle with a charge of 4.0 mC has a mass ofl 0r f0uwao(i8 $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.1gwd(hq-*n ; la dmz475o nbtw520 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the balldtdq* wa5 - mzob5n;7hg(w4nl for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2u r76h ,bsbt9*ifkhrkhq x*w yo ,r43;.00 nC. The ball is placed inside a uniform electfb4k, ;9uw*rr,3oyhrhh k*t sxb67qi ric 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(g6lgf5 .jv vs0wnx 9b cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spher0vjsg5nfvx (wl.6g 9be's surface?

  A metal sphere of radius 2.0 cm carries a ch/ rau6h1p5 ryvge u08karge of 3.0 mC. What is the electric field 6.0 cm from the center or kuahv/68 yu0er 1p5gf the sphere?