State the law of conservation of electrhuqo:d -b 8( g7mq2 va)igm5jric charge.

  Is it possible for two negative charges to aty tq: bsj2 m6y44gwpv22d*q optract each other?

  Is it possible for a positive and a negaz8l8 ezu4 tmr7tive charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glassk2qasaer2j: im xavk3/e1 4z 4 rod acquirj2vaeqzk4/k4 xi 21a:r3 emsaes a positive charge and the silk

  A proton carries a

  The model of the atom shy c37j(j. r d5f 5ltwhoik6a.oows a

  A neutral atom alwayo7h g7bp0ssffk.5i)g s j+5wos has

  An atom has more electrons thoj*5xj d/kko;4 z/yrg;bj-in an protons. The atom is

  Materials in which the electrons 2j.c.f *ntr,l/ idc fl p/otq;are bound very tightly to the nuclei are referredi,nrpff.l; td2/c l .tc *j/qo to as

  Materials in which the el.gmv1gzn2 dms ypz i*)8 ljzn;65,q qbectrons are bound very loosely to the nuclei and can move about freely within the material are referred t*d) n,2 nqb6g. jpmv1;s gqz8lizm5y zo as

  A negatively charged rod is brought near one ends5h by//;fh1vz) owti of an uncharged metal bar. The end of the metal bar farthest from the c1t ;y hfszo )h//iv5bwharged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They s3wd2p )doqjqa20ni plr-1 c1are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is c)-0 n1lspr12qjpd3 iqwoa2d correct?

  How can a negatively charged rod charge an eleswoc9b:bq48oys;g x w:* sw2//xk o opctroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargedm.. gksb+vf n1wt :/t)mqur- h0pt,pk glass rod. The elekg :m tp)b0k.hfvu+s.tntw m-q1p, /rctroscope

  An originally neutral electroscope is ground rxtcsc fmjm53/xdnne.8a 50 hw).9sc ed briefly while a positively charged glass rod is held near it. c.5s) mxtcc. nw8nas 5 0 /xr3f9mjedhAfter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. wohm4-k2gi9 gl x fdm8o;wd/4Then a negative object is brohl dggwoi9 2xdkm4; 48-m/of wught near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is plac8:nkn9hsq)ns5zs5)c hk0l pee*g 9 z xed 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 folloq9 c8l5p5hn9hsz)):zsx0e* skngn kewed 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 of the Cofc b ; rkxu-(5kjybh)8ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fm (f):yori-dj6we3 sjirst charge is larger in magnitude than ty3 dfosem) 6-(rjij:whe second charge.

  Sphere A carries a net charge andc; +/xjeicbibjb5:g 0 sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes th;5b ijg cjb0c:i+xbe/e electrostatic force between them?

  Two charged objects attract each other with a certain forcjh8;9 : syqutke. If the charges on both objects are doubled with no change in separation, the kytj;:9 8 uqshforce between them

  Two charges are separat3lidrrciiw c(8 x2 un*7 j06dzed by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3,73w0din 6u2 iixcz*j(8rlcrd what are the new mutual forces?

  Two charged objects attract each other with+ma2qnq 7j o9f a force F. What happens to the force between them if one charge is doubled, the other charge is t9of nq+a2jqm 7ripled, 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 se k77l-ypqaj2 wjd w-6eparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first eled-leyp2qjaw -7w j6k7ctron?

  An electron and a proton ax iafystz y jvv++6)/8re separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electj++)t 8/vzs yyi6avf xron is placed next to the proton?

  An electron and a proton are sepmjj4w vry8,r.2n86hcn wciq0arated by a distance of 1.0 m. What happens to the size of the force on tc0civ84m2njr,.hn 6q w8 jwryhe proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at tai 15ex( ltd36d 2mbfgr/8h zdhe center of a square. When a second point charge of -Q is placed at oned 65/i m13h efglrbad2(z8 tdx 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 cents kl;6+*/kgibt *yefr roid of an equilateral 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 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 vertkb+ gl st6rey**/f; ikices?

  Which of the following is zeky k3bq;/(ci9wy ( 6ypeh6snot a vector?

  At twice the distance from a point charge, the strength o mfg9rft(.b83;q;iazx eahb:f the electric field

  Is it possible to have a zee sn6z8(oxtc7 nxk4 6iro electric field value between a negative and positive charge aloxex 4st6kn6ic( n o87zng the line joining the two charges?

  Is it possible to have a zero electric field value between tw 3b-0avvx4b tpo positive charges along the vbp-0 4tab3vx line joining the two charges?

  Electric field lines near psi0rggak74n43e)s 7* p g fsrzeative point charges

  The electric field show65x: bhb .xrdln

  Can electric field liw8(ohoszvz5 - nes intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed v 4)y px+)weulin a uniform electruv)w4 x)l pye+ic field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eacaqz j0x 6hyn 3 0gru/e3, 6hafaw4 p;em6/oplrh given the same charge, the electric field (E) midway b,36wyaejo60rqa lrux 0z/fp3eh4nhg ;pm a/6etween the center and the surface is

  A cubic block of aluminum rests1yxjl)ev4 uh le;la;q : +k5yjf,ig1e on a wooden table in a region where a uniform electric field is directed straight upw;l1gv +l1 ef5;jxaiuqly y)e hk,:e4jard. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electr0wta 75 fgzgo1ic charge

  A positive point charge il71cnc v 2o1s (ostmav nl61k:xzc50is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the: (v1lx1m72 c06akccovzi5on s ls1nt hollow sphere has

State three properties of conductors in static equ6xcowb7 v:kv6*5ihgm ilibrium.

State Gauss's law.

  The charge carried by 6+at v*qo4a iqn( sdd (+0ikw rcmr mz*5:et7xone 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 mp/ **sq rcsug,C. How many more protons than electrons does th*qurgs ,sp/c* is piece of plastic have?

  What is the charge on 1 kg of prot;g/ t w fjp4mp)s8c ktk4,2wrgons?

  An atomic nucleus has a ch*lk5r;i+dpuew bq h1* arge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separat+z,yp9ob7ves ed by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of thb eosz,9+7py ve electric force between them?

  A 1.0-C charge is 15 m from a second charge, x i91j4qo +x8 b7myqtland the force between them is 1.0 N. What is the magnitude of the second 9q8x 7ybi jqtx1o+4lm charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?tw0q yl2fld:8pfm e*.

  The force between a m 1e(.zw/55f0 e8mmgau1appn6xhtm p$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, ie :ba(5pyhw. g3/vs uxp .lk*onitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what k vh s:./p*ugpbea3 o y(l.wx5is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axisvde naps6)gpfj, ( n13. 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 elevd ,pg )61jn( sf3napectrostatic 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 placeim n2o tr92i /7s qbsbi8:n/xsd at the origin, -2.0 m C to the right at x = 50 cmios 9nib t2/nm7qsix/ r8s 2b:, 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 locat o 7rk324yp:c imuqzz2p06pgmed at the following 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 of the force on the 3.00-mC charge:23 06mr p2ckzmio4p gquz 7py?

  A point charge of +Q is placed at the center of a square, aejwe-*5bx nt -k-jyy ,nd 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 5kex ty- y-w*jj-ne,b the lower-left corner?

  Q1 = 6.0 nC is at (0.33)n qexb3ze,qpdrvb 6,pppnx7m.i;v./ z b7n 0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net 3zqe,vx)zqxmnp rbv 3p 7b;.6bd, 7np pi e/.nforce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.v8yb0vz p:8*a4b l() cn qqcnku3u9ey10 m); Q3 = 5.0 nC is at (0, 0). Whatu3q u8e y* :ncv(zba8cqnk)lpv049by is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 5 txdircj5kkk -)c ,c- p(xi8* n;nlidmC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic foj(5 ; ck-,ki rk*xx c8 ntc-pnl)idid5rce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what p3yott pa*k8: :;wu lhpoint, on a line between the two chaa;yph 83*:puwo tl:tkrges, 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 origo (v q15i1g plcfv0q)cin 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 ov1q10 igcl5(cfpqv )it is zero?

  Charge +2q is placed at the origin and charge -q is pl7 ae(m)eka; tzaced at x = 2a. Where can a tet( aa;)z7ek mhird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g8gp 3 pv *v.sn4x+vyydim7k2e. 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 o;udp le;7 qe b/rj vt1s1-xb6gf gravity by the attraction of a fixed proton some distance above it. How far above the7t;bsvdexjl g1 6q;- rpb/1 eu electron is the proton?

  Two 0.20-g metal spheres are hung from a coavx ei fsl4c5gx c/rq0)x;7y )mmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostaticyfs cr)i xqa74g; ex/5v0x)lc 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 c7uic:b. 5 mc dszkap35harge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nuzua7ci:c.5 5skbd pm3cleus?

  What are the magnitude and direction of the electric fie2 2lzvyq zr/11k o.wxlld at a distance of 1.50 m from a 50.0-nC charge?xqol2zz/ y1l2 kwr.1v

  A 5.0-C charge is 10 m from a small test charge. What is the magf(8o zmpw qw-wtb3 i(3dt-y4anitude of the electric field at the loctdw 4pwqiw38-zfm yb(3ota( -ation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directiontbh.sx 1rx4kg je -,xpp.;f: y of the electric fieldt-e;.4. r shb:f kyjgpx1xxp,?

  A 5.0-C charge is 10 m from a small test charge. g+ ftjf5i:c)83rovoz What is the magnitude of the force experienced by a 1.0 nC charge placed at thefio8 r +f):5vjctozg3 location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a.oq ljue(r8ikbg8n2 ,e3: lxq distance of 4.0 m. What is the electrx2.q rl8g n8ib , qekl:(oej3uic field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm maz:kl*u(cjheie5r3 vjqg. 61grk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark.g(1ig:.j*uhr qejk365cz elv What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a 2qr n5hu 8( ae4zopty5meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line 8zhqno(5p r2e5yt 4aujoining 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.6+zf-fr xe b69)l 7nbztpcc1h What is the magnitude of the electric7xth lcb 1 6n-rfez pzbc9)f+6 field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square ofwxm9 uqd6u :+s side 0.50 m. The last corner is occupied by a qwsx 9u: u+m6d-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 ;1 : ytc(zkwj-z*t-vl mxuxx6 are 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 (0, 1). What is the magnitude of the-lj;61x(w m c u-kt*t z:yxxvz 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 unp8wrhd0(ghxq wq( wzj 3w4(/ziform electric field. What is(hwr(zw3p0x 8qgz/h(wqj 4 wd the magnitude of this electric field?

  A particle with a charge of 4.0 mCbhr3nf -m0;t:apju*.p v p8/g8 bfsb g 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 *;w0 (;jqyv sfki j1kk u06jhsan electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be uj (0qjhjwi6*1yvkkfss ;; k0 suspended?

  A foam ball of mass 0.150 g carries a charge of ma7s 5lyl/r r*-2.00 nC. The ball is placed inside a uniform eleclls*r / ymar75tric 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 c1vryg8slwb94.*xty. ;kkil o harge of +2.0 mC. What is the magnitude of txl;ki.8s.lvbrw* goy4k9 ty1 he electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of kx /d )pzv-z.:i8or aawcno5 )3.0 mC. What is the electric field 6.0 cm from the center o)oz w.r ix o/:a58akcdz)p-nvf the sphere?