State the law of conservation of electri3 (notx+sao(ec charge.

  Is it possible for two negative charges to attract each wy0ez+ hhspo+qsozr3):u0f0 other?

  Is it possible for a positive and a )6zt;) +c4 cd h vk4e5dathtgznegative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duri n 45umsrc,k,fng the process the glass rod acquires a positive charge anrukn, s,c4fm5 d the silk

  A proton carries a

  The model of the atom:wbwu2 fwvxg8*xve l3b a(u3(iepp)( shows a

  A neutral atom alwaysn*bw(: )kzb)+jecm qk(kuu/ n has

  An atom has more electrons than protofj ;w1zchnf 6g/*hve4 ns. The atom is

  Materials in which the electrons are bound very + y8(nqp t.bzqlc ,smrv45 r5gtightly to the nuclei are referred b4(pz5. tglyrn scq+8m5q,rvto as

  Materials in which the electrons are bou:9agy qhqq*m 4nd very loosely to the nuclei and can move about freely within the :hm 9q*aqqyg4material are referred to as

  A negatively charged rod is brough.phlg;d b9a9 e 0pvm*ht near one end of an uncharged metal bar. The end oe9h;d 0vhga*pp9m .b lf the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. ,l)cqb hi)v t* They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which state*v qh,c))tb liment is correct?

  How can a negatively charged rod charge an electroscope posilyd(8,5i:zqk 5a +mnqy w anqu ,l5w8gtively?

  An originally neutral electroscope is briefly touched witi;cvk2.eha/m h a positively charged glass rod. The ea m2/vcihk.e; lectroscope

  An originally neutral electroscope is grounded briefly whilephpy7 z;s1n -+ixz ,)ef+gnee a positively charged glassgnp+z7e )-+i;yh n1xe pzsfe, rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscojvfc 51z 4q7mdpe, and the leaves separate. Then a negative object is brought near the elec4mj7vcdq 15fz troscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulatedb3 fgjei0 x +-di a+bki(*isd(hulz20 table. A neutral metallic ball rolls straight toward the object, but stops before it touches i(0* d g (ij hf+l3i2+bxaui 0d-zeibkst. 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 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 c )lxeccnd70( a+a-xa- lt3bxb onstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distk780k t a0tukpance d. The first charge is larger in m pk 0ktka0u78tagnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eacy1/o.hf ouvv4d c4 ra8h other on an insulated table. Which statement best describes the electrostatic force bet18urfcoyao/vvd4h 4. ween them?

  Two charged objects attract each other wit7ue a (nh4/ 2xp1 qmie0usgh-jh a certain force. If the charges on both ob2u-hjspxe 7q/(a 4 0u1ni meghjects are doubled with no change in separation, the force between them

  Two charges are separateh5pa*ppve8z/1.-xlymmn ;g )b a p;hpd by a distance d and exert mutual attractive forces of F on each other. If the charges are separabz;pea a-*m.y 1hgp8npp/l;mxpv )5h ted by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hay tvzu. +1y-o44uqyppdvn4.oppens to the force betwev1+4pyqodynz .oytp v-4u .u 4en 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 value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What7yh ): x1pb2nf5jaqir happens to the magnitude of the force on the proton if a seconynx5 p7jfa2ih1 r:bq)d electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens tzblrv 1-557v1bb hc ivz7ivx;o the magnitude o1xilvi7cbz-1hrvvb;5 b5z7 v f the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happenswk8p+gmfu( l8d* jx3vn 55qd:q46zoib; ap is to the size of thj af(zvu45 6mo5qs;+ d b8:ikdg8lqnpi3p xw*e force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a s 0cq(3et ;ay(hpv(sptecond 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 s tp(vqh(c03s t(aey;pquare. 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 cqzr9j- hp/dd*i ei s7)t i)+opentroid 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 theodr+/79pj t)q zs*) i-dpheii center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a 2:)m6c xloeon-16 fb gibs8vh vector?

  At twice the distance from a point charge, the stresgtku v:1 )ox (-e-mig8yj 4glngth of the electric field

  Is it possible to have a zero electric field vt9a6zot c(p 6.ol yc9yalue between a negative and positive charge alo c6 a(9t9ztpyyo.6lo cng the line joining the two charges?

  Is it possible to have a zero electric field value between two positive charges1o nl7,9p* blx7 (1t uyd8hqxpejt)dw along the line joining xnyo1x8)b9,el17dtdj7pp * w ltqu(hthe two charges?

  Electric field lines near psitive poilo u6cdld)m7 ,nt charges

  The electric field showtz 7mhd)* pl m 4t;y0qsrxp;38n:vg xxn

  Can electric field lines intersect in0wq0jq :w6q zj free space?

  A solid block of metal in electrostatic equilibrium is placed bg 9)u+g cu17olmn.8,5jxoqtlf. w idx ,(veain a uniform electric field. Give a statement concerning the electric field inilaxj8ouqw., bg5ndu.1) (o9gt+f,c7 mel xv the block's interior.

  If a solid metal sphere and a hollow metal sphere of equ qd 4w0runihqsg32)rai 14c t9al diameters are each given the same charge, the electric field (E) midwad g1h w30)94irariq2n4uq stcy between the center and the surface is

  A cubic block of aluminum im qf xw9g u+h*fk7trob;0w40 rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning tw+w0 t;ihfkbfu49 x * r7mog0qhe charge on the block's top surface?

  If a conductor is in electrostatic8h b xg+0j)2y2y8u 2 n1-tcbusgprnhv equilibrium near an electric charge

  A positive point charge is encl ul2js1runp 6/ki-j- uosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directl 1--js kj/u2plurin6u y above the hollow sphere has

State three properties of conductors in sp9*2*z gs hkjltatic equilibrium.

State Gauss's law.

  The charge carried bysvn/b m 4 hk07*ie//pen)zfkh 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 of +z-*/r*gnco tv 2.00 mC. How many more protons than electrons does this piece of plastic have?g* vrc -/z*tno

  What is the charge on 1 kg of proe k)msa 3iw5 a6;7igrd1( nxhvtons?

  An atomic nucleus has a ch7.vd0ewme a, v0rb6ih arge 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 chl,k1gb, - og.cw 5bczm, have charge values of 2.0 and -4.0 mC, respectively. What is thec, bwzb1, gg lck5-o.h magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a -boh;qi r4vct4 lrpr5(9 ge/tv-wy1osecond charge, and the force between them is 1.0 N. What is the magnitude of the sw1g veo yi4h--qtv 5rt9(prc lrbo 4/;econd charge?

  Two 1.0-C charges ha 1p9kb5zzdh d z8;0c7 ypg,nfove a force between them of 1.0 N. How far apart are they?

  The force between a ,uyx+ vvx5l9m$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2a+jsij *t:ofjdkwvri p ,l(3m*wx94 1/on 1wj .0 cm apart, experience a 1.0-N force. If they are moved t 4j1wkj +ijs*wpm:/a 3(l 1wfxv*j9 rd,ooitno a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 m jbkpev8:ta+8 C 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 the8:k+j t pbeav8 magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges aretrmil10s5e-cq :s +7ke/gfz8 f7 icans p.q 7b placed on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at qre. sb1i /l+7fmp5cc:s7gs70 ekqfzi nta8-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 charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at .t, n ru0fr3s0i w)upvx = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.3p) viu 0wfs.0, rrtun00 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 ac5.oa*dwrgcybu le7mx( d2(*b:b )p 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 isor*m5yapgw* bl. 2d(bba()7 :dexcu c placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q- n ejpz3sy4,l2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude jepy3s z4, -nlof the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.-bi 073b/ mlnlc b5auh10 m); Q3 = 5.0 nC is at (0, 0). What is the direci7buln c/ h -b0ma53bltion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of auhi10db9y3.lc, bpf an equilateral triangle which measures 30 cm on a side. What is the macbua h0dy.pilf9b,31 gnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sepab:p4*(bx6r.gmqnyzws k/:3 i o jos ;hrated 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 acting on it *ym/q4g j 6h:wsbpozors:(b.xi; 3k nwould be zero?

  A +3.0-C charge is at the o*zc(. a ox4xsarigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so ts(ox*cxa 4z.ahe net force on it is zero?

  Charge +2q is placed at the origin and chargllf8 4oy36iahgq*q;dhoo1z 6 e -q is placed at x = 2a. Where can a third positive chargh3dl18aol o h z foq4*q;ygi66e +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total pzk5z1n8 7usczu hj59 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 gravity by t z8rzjc 3bvkf/f 2ok rhc9jhd.+*+r ;ahe attraction of a fixed proton some distance above it. How far above the elect3hv 9r*a z+;. rb+/jfjkohdcrkc2z8fron is the proton?

  Two 0.20-g metal spheres are hung isz3z( ug,m: 4-dz1tbjozs: *4tzjvufrom a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the a, oust-um1 (ib gd3v:tz z*z:4jz 4szjngle 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 magn eqreii;u :15doy zd-2itude of the electric field at a distance of 1.0 m from the nucleus?ydo 1d5 e2 quz-ieri:;

  What are the magnitude and direction of thewy3r3q9puy7zippfw) 6 g4a *b electric field at a distance of 1.50 m from a 50.0-nC )r*69w7qpaui3 pg bzw 4yp3yfcharge?

  A 5.0-C charge is 10 m from a small test charge. What is ts w 88ld1-b.keu/ipcvdx l,-hmf.mh /he magnitude of the electric field at the location of 1, k-dxe/lh8h/.8u.-wp sflmi dbmc vthe test charge?

  A 5.0-C charge is 10 m from a small test charyzw6moa9 ,()2uksr 7m tfuk8dge. What is the direction of the electric field?kt2za m(d,u k98usmr ) yof6w7

  A 5.0-C charge is 10 -j**6,z mwcmksb q/ogm from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test-msm ck*/wqg* bz6o j, charge?

  Two point charges eachfk8qrb5fx)nrw6kl * ( have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric fi( )b*fxwnrk 6ql5f 8kreld 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-e5wk2m/s hba -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 3as5/kwb -m eh20 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick an( e ) po(tsdradr1).u*c eszt5d a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two c( so.dcra1tep*ter z 5u)d ()sharges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 qxmx18 6uds(s and x = 0.20 m. What is the masqsd u(x6m1 x8gnitude of the electric field at the point midway between them?

  Three 3.0 mC charges/ 6l3xzvjqatha/ ub2w(: qe1d are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fie1h6j b/a t zd:ux l/ew(a3qvq2ld at the center of the square.

  Consider a square which is 1.0 m on a side. Char8kb53xwjq qx3 ges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 b3x wkx853qjqmC 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 bnew( sv:,8;c0bk jj:nxh;*xw mpoy4uniform electric field. What is the magnity:no(c hb x:80 ;pe;,xkmnbjjvw4s*wude of this electric field?

  A particle with a chard*uw6id vke ,.1 pcn9xge of 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 6000 N/C po9: slu.v1 zrchinting downward. What charge must be placed on the bal rluz: 9v.c1shl for it to be suspended?

  A foam ball of mass 0.150 gxibz //06-opu g qd*;sj 3x3ik-gmpaf carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against thxg i-; dm- 6*opb3zkxpqfjus 0a/ gi3/e force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. 7ah*vcqr*e 6f *;bifa What is the magnitude of the electric field 5*;*eah a*q7b 6c ivffr.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge: t o;t3wc 9fojog-nn, of 3.0 mC. What is the electric field 6.0 cm from the center of the sphe:3; ,o fcntjoo9nwt-gre?