State the law of conservat wtu kfmjye5),zn1;h6ion of electric charge.

  Is it possible for two ne hrzq*d7j)qf -s 8 rn,uo;d.ycgative charges to attract each other?

  Is it possible for a positive and a negative cha4w3r4vnnoe n a,+z es)rge to attract each other?

  A glass rod is rubbed with a6m8cvwt4 q1gwihm h; ( piece of silk. During the process the glass rod acquires a positihh8t4qwg i1 v6;mwc(mve charge and the silk

  A proton carries a

  The model of the atom shom nphb:wt+7rko-fyv)di ii9v4+1w;w ws a

  A neutral atom always mbzy 5 /+*d9hyzqcvp1x :8smh has

  An atom has more electrons than protons. Thi( 4j :bwdqmv)e atom is

  Materials in which the electrons are bound very tightly to th :sg,d2zg mxf xzzv2/3e nuclei are referred to aszz, mgzdxg:23vxf2 / s

  Materials in which the electrons are boundd /4(t5zfmx 3 ya: wdetu*p4ce very loosely to the nuclei and can move y:wp(t*/34d aufze5d4ec x tm about freely within the material are referred to as

  A negatively charged rod is brought near one end omwv+ ;btizws5 *aiot c,y,(;pf an uncharged metal bar. The end of the (aw +;tmvztpcs5i ,* owy,bi;metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are x6qcw 9o c9chc.t(8)6e abmt wplaced near each other on ant(.6w9xhmw bqe89ca6tcco c ) insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope p-s5 wuvr 0g1rq;ax;4p qe vde2ositively?

  An originally neutral electroscope is briefly touched with a positively chargedc5lj)k t zsau ( aj ch1by3;npg(r,f(7 glass ru a1(73 ;(c pjy)kn5, ragf bthczjs(lod. The electroscope

  An originally neutral electroscope is grounded briefly while a posi+ugk (9 r;p m: +ers4urw2oobitively charged glass rod is held near it. After the glass rod is removed, the elect ro9pr+ k2:e(is;rmg b u+ouw4roscope

  A positive object touches ybst695 81dxd6 b uzn1i 8tjdl7cw;bea neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to 6bt1d;uz61sbceni59dl 8t 7y dx 8 bwjthe leaves?

  A large negatively charged object is placed on an insulate (xcbcg1lku72d table. A neutral metallic ball rolls straight toward the object, but stops bel kgbc21x(c7ufore 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 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 ofj-a twclowq:iqit6s:*u77v ipj4o5( the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is(er1ah5 a+r xs larger in magnihsxrer+5(a a1tude than the second charge.

  Sphere A carries a net chk0 f)a5rxu*txarge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best d)fak 5xt*xr 0uescribes the electrostatic force between them?

  Two charged objects attract each other with a certaino zc(ug*q4:j)( zo xuz :mle)(jmkxc0 force. If the charges on both objects are doubled with no change in separation, the j:lu)ex c0g:uc) q4x(k ( (m*mzjozzoforce between them

  Two charges are separated by a distance d and exert mutual attractive forces 3y vcgs;ed3js5f5-xx of F on each other. If the charges are separated by a distance of d/3, what are the new muted;x 5sy53 f3sjgv- cxual forces?

  Two charged objects attract each other wic y.7m*noem.6i7- y wgra 0l5gck ;1)avveyso th a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation d ygy5eioy0gvw . -)6nla.;cscr*oa e kvmm 177istance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separa (sq qh+oe.2qgjno)bn::c qr4ted by a distance of 1.0 m. What happens to the magnitude of the force on rbeq(+qcqhs2:o:gj o .)n4 qn the proton if a second electron is placed next to the first electron?

  An electron and a proton are sew0+cm z4kk zv-kwc88 : vlbyo*parated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second elec*bcvz lm8vkw4 c0kzw8o+yk -:tron is placed next to the proton?

  An electron and a proton are separated by a distance 07 q2)d zhuq(w5lkkaxof 1.0 m. What happens to the size of the force on the prz0u(q5h)2w x kda klq7oton 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. Whtsm45ch 6et cl)(5ya ken a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostat y)ase46 mcltct(5k5h ic 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 vw1- (pqru 4 6sifyvp-centroid of an equilateral triangle. When a seconfsiw-p q r(-vpuyv 416d 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 vertices?

  Which of the following is not a vectortm6m.ev8y 8kk ?

  At twice the distance frp (r50v1bf6rdmygi qs 89, kiqom a point charge, the strength of the electric field

  Is it possible to have :kfxu3 zg3(8umnx6vdexfxo+. twk 8:a zero electric field value between a negative and positive charge along the line joining the two ck kwt.x:3 :6fgdz onu8 xx( mfe83vxu+harges?

  Is it possible to have a zero electric field value between two positi1 +. euc6x61qat g yav74mqyk0ouk 5mive charges along the line joining the two chaa 10 56e.ygm4qm k+ycokiu6qxa7uv1t rges?

  Electric field linesl,fz0mlc6j g b)4fgk. near psitive point charges

  The electric field shotc( m77m5kkv9 ;vn s ;z4csjknwn

  Can electric field lines intersec )in.j;9hbz6c;ez egbu* re7mt in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elect5w.q d 9byh sh02ok1gkric field. Give a statement concerning the electricw9og qhdk10ks2h5 .b y field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are e/cap k,/lz1aiy u 1lz/q.5lbgach given the same cky./p5g/ ca i lzulq/1b,lza1harge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regioj.rd15) g/h khl; q;:5anx1xf s hupden where a uniform electric field is directed u;1hd5)j ksgr1:; l/hpx5. fxqe d nhastraight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in ;/*)5v /as 3x)wbus bam so),amzibaielectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a giv +c0qfpxb7d9uod k/f0/ v8 hollow metallic sphere that is grounded. As compared to the case v gqbdk8d+0u 7i0/xcp /voff9without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of5 dmy s,o2r2+pnygil9 conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron ij+q*gcq9 ;p pp5v8 sfjs $e = -1.6 \times 10^{-19} \; C$. 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 mC j;ieqi..; cn,zy1tst. How many more protons than electrons does this pi 1t.n.ze;i,sq i tcjy;ece of plastic have?

  What is the charge on 1 kg of pu:yzi; c-2e idy7/3rsdk +zx y;an. nsrotons?

  An atomic nucleus hasj3 s h)yq1x4ks a 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 charge values of 2.0 and -4.0 mC, 3 921bee ;rpx7bnl 9nmzoa6gu respectively. What is the magnitude of the electric ozmge3 6u 1l2;rb7nxe9 bap9nforce between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwe n.u+hdg20r ngt x3d1x6sixs:en them is 1.0 N. What is the magnitude of the second charge sdi+6 d.xh:xtn uxgn3g20s1r ?

  Two 1.0-C charges havr- 7)d dfo)m1k jng)uxe a force between them of 1.0 N. How far apart are they?

  The force between a ; .+yl jn2ggtp 9,8c +inzoetj$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencv+ vf j: oby3z22qpfr3e a 1.0-N force. If they are moved to a new sep+z bpf 2fq2r3j3o:v yvaration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on+z:oddai7vl we*i6) m2jv4b e 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 fe:6mal 4*z2wj7dvebd )o ii+v orce which acts on the charge at the origin?

  Three point charges arenwu 1hyhcwx41:c:ry. a+pl+ d placed on the 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 ma xh:nd+h4p:+cl1ay 1 wrcyu .wrk. 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 = 2c 0 ujkko i10x4qf;t1h.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = kji;ft01c4k0 1u qoxh-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, anc i/hm5m)mp6 qd a second point charge of -Q is placed at the upper-left corner. It is observed that an electros6i m hqmmc5p/)tatic 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.k z:o3r2.;s8w-;*iwkdpmfy: l4 cdemlew2o s0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chalowd-mp4wemiz2relws ;k3*kco :dy ;s2f :8 .rge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = wf(,sl y (f)ile-2vuc-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on ti,(e-slv2 ul)f wfyc(he 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatera s k;kwo0s)gy+gn .;x+edf6whl t;+xn g;fkhw)6 sk.sed0oygw + riangle which measures 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. At wm) ge d-um)x5xhat point, on a line between the two charges, would it be possible to place a charge of -Q such that the electe5m d)x gm-u)xrostatic 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. 0jtqyk**.fr1 / pp vrvWhere on the x-axis can a third charge be placed so the net force on it isq /jtrf*.1*pprvykv0 zero?

  Charge +2q is placed at the origin and chargh8jhmg0n;a s(; (jcfse -q is placed at x = 2a. Where can a third positive charge +q be placed so thatsn;j0f(ca (s8g ;mj hh the force on it is zero?

  A copper penny has a mass of 3.0 g. A t;o v ( do/ m,wmaqhbe*rl,(4bfotal 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 gravityvy3 gkao93g c)uv;wn, by the attraction of a fixed proton some distance above it. How far above the elecv;kyvwu3ao3 , nc)g g9tron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonco n*e5:*dsnhyb-s qr0m nducting threads which are 30 cm long. Both are given identical charges, and the electrostatic rsh0 -m*:r nyndb e5s*qepulsion 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 ti/kbyu m.dz ke;m w *1q3n7w9jhe electric field at auykw1 .*9we mj;zkqbd7nm i3 / distance of 1.0 m from the nucleus?

  What are the magnitude 73;p lcszwp )g0lcn*x and direction of the electric field at a distance of 1.50 m from a 50.0-np )l ps0c7z xc*3w;gnlC charge?

  A 5.0-C charge is 10 m from a small test charge. Whvjw1,-t35pl jd) f trsat is the magnitude of the electric field at the location jp5lt) fvjswtrd 3, -1of the test charge?

  A 5.0-C charge is 10 m from a0 ujv yt0.n.px small test charge. What is the direction of the electric pyjv tn0. x0u.field?

  A 5.0-C charge is 10 m from a small test charge. What is aeqxm gu jh3i:)51p-tthe magnitude of the force experienced by a 1.0 nC c)51 xqu-ep : jaimg3htharge placed at the location of the test charge?

  Two point charges each have a p(ljf t/(adbnw( 22lzvalue of 3.0 C and are separated by a distance of 4.0 m. What is the electric fiell b (zdfw t(2j(/n2apld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick a-5f n8vw3udd4q,f q lgnd a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cd3g85vuq fflq -n,w 4dm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC c+o7 k0imx6uf6 c(uoykh(;oe oxlt,s3harge is plx6o( 6+m l0h oooxk,7uut3 scki ;y(feaced at the 50 cm mark. At what point on a line joining 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 = 0.2(ug p pifo sll *8i0qg1,fz5l+0 m. What is the mag i58f ugq,li f*lglp( 0p1z+osnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three cornmljuvcjo( b,3 )t68 cners of a square of side 0.50 m. The last corner is occ 8cct(j ob u)n3,j6vlmupied by a -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. Cha v;rj8ooluv+z 7rx9g 0rges are placed at the corners of the squ orzvl ug;x0 r7voj+98are 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 electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC 8k f-fv3nem pz: c64pnwhen it is placed in a uniform electric field. What is tpn3:c -f8kvf n4epm6zhe magnitude of this electric field?

  A particle with a charge of 4.0 mC has fm k am-:s.iq bh.e86ga 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 0pxt sckg* .gws3z:p+0e 1g)nh .120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it tosgtgpekx n3.:+h)g* zspw1c 0 be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 news-t/ ec ;k;zC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric fiel ;skc-/etwze ;d?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What i9 zn nc7ehtt/a6tm y+8s the magnitude of the electric field 5.0 cm from the sy a ce6tmtnzh/97n t8+phere's surface?

  A metal sphere of radiusiy/jub/.o ky . 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the kj/u..io b/yycenter of the sphere?