State the law of conservation of electrib7wh +vv1y rch/brr 1u1h88oxc charge.

  Is it possible for two negative chargm xs9diw u1;*les to attract each other?

  Is it possible for a posit cxx b47lrca ; a)5cbd3oky54yive and a negative charge to attract each other?

  A glass rod is rubbed with a piecjv/1. kkubo5qbg(t8,1t 7 ayt+ ow inse of silk. During the process the glass rod acquires+q(t,sy/n 5j. kvto 1ubbo8w1 7iga tk a positive charge and the silk

  A proton carries a

  The model of the atomi vdwic+1 fofthx+,+nm/. q )w shows a

  A neutral atom always h,ypqglthfxn91cu+xh; oa r2z 2505ss as

  An atom has more electrons ph6 - :vkc z,*l29dznj un,t +gmmyk(ml5)beo than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuca99n(oa pq/ pwlei are referrep9/wpn( o9qa ad to as

  Materials in which the electrons are bound veyn; ztvdnl*:+ 2 p(3x1ghemz(1p ebtgry loosely to the nuclei and can move about freely w t:+enngztp3yz 1 ( p1lbgm2(d;h*evxithin the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Tyx 2i gf9y.qk0rnv-,khe end of thvy0-x2yq9 rfik,nk.g e metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B j n74)tafdsqhmn4:tli ,)x)e is neutral. They are placed near each other on an insulated table. Sphere B isqd) l4ns)nta4j x,i)tf m7 eh: briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chav4,sw4 hu sx8crged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chnwtvms-1f /.m arged glass tm.m fswvn 1/-rod. The electroscope

  An originally neutral electr7yrx/c;: xlphoscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electrospr hlyc :7/xx;cope

  A positive object touches a neutral electroscope, andy-u4 r+q(hkif-zvx i(o(lr, w the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What -r-o z(lvq y+(k, (fwxuii4hrhappens to the leaves?

  A large negatively chark285ml ks kb;wu4s; 7 xx74ilu.hneb dged 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, .xkm2suu8h4el 4b5;n 7xkblwi7s;dk 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 o38fm 6 ccvdx0lf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d(y -wxt5ec 4)g1ziocsf i2w.h ,o:jsbsaj r5-. The first charge is larger in magnitude than the secondcws .tyjb5 cg hw-sf ,:ozj)ir-xs4i 5o(2a1e charge.

  Sphere A carries a net charge and sphere B is neutralb fw9re ( . +vkj 4rdb4h;/v-kcgs)yis. They are placed near each other on an insulated table. ;k9+gw4 (r deb4 h vjs ibcvsf-r/)ky. Which statement best describes the electrostatic force between them?

  Two charged objects attract each otc ;n1isdcp*b7ka +w,mg /sal7her with a certain force. If the charges on both objects are doubled with no change in separation, the force betpkmc+ a7nw/ 1c* isas,bl 7gd;ween them

  Two charges are separated by a dis 1b(01t*hs ue3tqtrdj tance d and exert mutual attractive forces of F on each other. If the charges are separated by a distjs d1htrttb(q0u*3e1 ance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to th;flnz 9c6,amc at+f7o e force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original l a+f9m76conazft, ;c value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happenjp8oy v. 9ku oz muux***n/yz3s to the magnitude of om38u9pky* uvz* o*ux/n. yjz the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are sepzlip4bc 0q; q4arated 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 t0c 4i ;bzqlpq4o the proton?

  An electron and a proton are separated by a distance of 1.0 m.a d- iocc5tjk gh.wu 81wu65n) What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the put )5acij5kg. 8ncwhduo-61w roton?

  A point charge of +Q is placed at the center of a square.d1cckbrq4d p +qa:4s7+ywjj- 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+p+-jkrqs 4 jcba7d1dq 4:ycw'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 tr*b31 .k jk7;huf zklhy)jui3diangle. When a second charge of +Q is placed at one of the triangle's vertices, an electruk iuy.17f 3 zb hkjh*);lk3djostatic 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 not a y.5e96n2dpq1 es gsrb vector?

  At twice the distance from a point charge, the strength of the1 6 )tymtlgevbd(tr nq.6+por.,(x zw electric field

  Is it possible to have a zero electric fiel+lsm5pi v4*;y)*hjkstywj tgacrs9 sf 3-0u5 d value between a negative and positive charge along the line joining the twor tw sg p-s9 *ahjv 0syj53)mtf*;cs5 l4u+kiy charges?

  Is it possible to have a zero electric field value between two koi*v*ua 7 :zxpositive charges along the line :z*i 7kaouxv* joining the two charges?

  Electric field lines near psitive point cveh 2+ke3c:dwvtu u/o 3e*dc*harges

  The electric field s6 2hr.9jtvrmm;+ 7g wg)f oeunhown

  Can electric field lines intersect inmbpqhs1-v 1zk;is(fa7 up50y 7vkh- n free space?

  A solid block of metal in electrostatic equilibrium is plajas sa8d a4d: .i.sujcv: ;hw/ced in a uniform electric fieljsa4av. hju8: dsd. ic:a/sw ;d. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equk p 4p8kr(8r5h( ghzczyha8u/al diameters are each given the same charge, the electric field (E) midway betw48pu rzpk8h/k ghay8 (c (5hzreen the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniformpgyplam 1xbn7k/6 /m g/6u(w6xtndm; electric field is directed straight upward. What can be said concerning the pyugng 67m/a/;/x 1m(plkwn6t6xbdm charge on the block's top surface?

  If a conductor is in elecl 4orx0o)uev*5yn.f -sa 5sujtrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic spig(sakv*s4 0ahere that is grounded.a(sa0g ik4*v s As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertieyyw6r 7e,5wqds of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one elegj/x1.2qd)y hs5i9s9 u qeul kctron 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 + 7;txq+rlyj,c8w-j z e2.00 mC. How many more protons than electrons does this piece of p8yj,q7zrxwjt - ce+ ;llastic have?

  What is the charge on 1 kgr5;,ql:8o30ldudb1h2k oo sw;wri y z)akcb3 of protons?

  An atomic nucleus has vym6 -0-jc+s 3 oxxrm7-jrdc q6jtorzld:0p5a charge 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, have chbqr-wy. ho-gajy2 r+(arge values of 2.0 and -4.0 mC, respectively. What yy ( jbhqro.2-aw g-r+is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and th 7dv- i8yk(b1q2iyoz8x(r tlse force between them is 1.0 N. What is the magnitude of the second chargzyl yk-81(qi(td2 orv8 bixs7e?

  Two 1.0-C charges have a force-/ 1e,1iudyezienfkx8 bu ,z5 between them of 1.0 N. How far apart are they?

  The force between a 8u; e+gdronuji( ; (qa$30 \; mC$ 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 f.,nbspwnip8h/ +jvv ,orce. If they are moved to a new separatij.,s 8nvw/,hpv n+bpion of 8.0 cm, what is the electric force between them?

  Three identical point chaee*fc 6yv; g)s 6 lvga;t--eegrges of 2.0 mC are placed on the x-axis. The first charge is at g -6etgc l- vegey sv*;a6e)f;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 origin?

  Three point charges are placed on the c, a42u8czfmah6z w/l x-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 /a cu fchw86z,4m2 zladirection of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions:) *yh u .e :u2yycf:qd(iyi 1s:vzma2q Q1 = 2.00 mC at x = 1.yzv mi2yaq:h*u :21)cyd (yieusf :.q 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?

  A point charge of +Q is placed at the center of a square, and a second point chan;x2ky1b8phv. vk k* erge 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 ;nx2 p1vvkke8*hb.y k 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 (0.7y 8n3/ huzb1j hprfyi.n.boxgp u;)330 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 force on the 5.0 nC char3n;/ihbg378.h .j1uu) r zf nxpoyby pge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10h68v km7babb.1fdxs cht8/ g3 m); Q3 = 5.0 nC is at (0, 0). What is the digd7a .m 1htxfb388bsc / bh6vkrection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equil0y7p2 je 5k57ipgcks gmddu a;/x,4llateral triangle which measur;ayukd5mpj/ 50l elx, s4k7idgpg72c es 30 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. fa;j 0h j ku9n-o 3h)cy.qx+ujAt what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting oxchj) 93 q.+kjyhfan-u;0uo jn it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = ;,g ue0xag pi1 fq(jn54.0 m. Where on tp (ej 105aix ufg;gn,qhe x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. hh( )m z 0zj;m*psb;dhWhere can a third positive 0)zhzsjmpbh;*;dm(h charge +q be placed so that the force on it is zero?

  A copper penny has a mas0(tn7d hs6zr d xtmmc.+lp :pr5;scb3h-bx+g s of 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 of1+-pf xr5xtnpwk1h2v y cw(f+ gravity by the attraction of a fixed proton some distance abov +xn1pvcxf51t 2+y wwrk-p(hfe it. How far above the electron is the proton?

  Two 0.20-g metal sphe5xb db2 zh vz s)pd+lq6n::02 kyfhyc(res are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces themyyhxd:k22f q:(bbz5ld0cpvz sh n+) 6 apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge 7f1u rm30 ez 4 *zhb(e0woasdni07 dexof +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucl3e0we(ih ob zadsdef x04mrn 1u7*07 zeus?

  What are the magnitude and direction of the*ii)2 gq0k+hz gn qmc7 electric field at a distance of 1.50 m from a 50.0-ninzqk+qhi2 *c)7g g0 mC charge?

  A 5.0-C charge is 10 m from a small test charge. What istw.eajevr :-la:u( /z the magnitude of the electric field at the location of the test chargeae:a-r zj vwl(u. :/te?

  A 5.0-C charge is 10 m from a small test chb w/ yln:a32t0z,efq sjx*h e:arge. What is the direction of the electric2ya:ezw*b: ex3 /0n lt jsf,qh field?

  A 5.0-C charge is 10 m from a small test charge.mxlgxi4 )+l *a0m)0bs7mrqo s What is the magnitude of the force experienced by a 1.0 nC charsm)x* mmx+b l)0og a4s0q7l irge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance ow-y 2c5 hjng,cs6nrmzafx.1 + f 4.0 n1.a y gxz 5ncrfj6,+s-hcwm2m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a metcoah.8wfa +p( er stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field a h+ofwaa.8p(c t the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4m,5yj ev1+hr c.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charg+rmjec1v, hy5 es is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are pla wd,cqyhnr576ced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midq5n7h w6d ryc,way between them?

  Three 3.0 mC charges are at the three corners of zbrlay--gysg2 o; 1 s g,qyc*7a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of tl--cg2yr*qsog1sg z; a7by,y he square.

  Consider a square which is 1.0 m on d 1jm m ljhjq,jm8b45-a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1);mbm j-48 j,5j mj1dlqh +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 ll+ghfur2 ,ez ww7)y0it is placed in a uniform electric field. What is the magnitude of this electric field0lgwy2, r+l) hwez f7u?

  A particle with a charge of 4.0 mC has a mass yw 3rjag: 3s ;crq9/ryof $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is p*1h mk:qqsf1fn) k uqr*1wdv((udv-nlaced in an electric field of 6000 N/C pointing downward. Whvm(s*nhn q rd qvuf*(wkf:1)dk - qu11at charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Th z142p bq w.xfcjhz8y k(e2rh-e ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude 2hpb 2-hfkj w1.(z4c8q reyzxand direction of the electric field?

  A metal sphere of radius 10 cm carries a chsop)xmwp j :4:arge of +2.0 mC. What is the magnitude of the electric fie spomxj)pw:4 :ld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chargkesd64tw+vuc4brd 8 4e of 3.0 mC. What is the electric field 6.0 cm from the center of tr + w46sdbd8vc44e ukthe sphere?