State the law of conservak,o:/2 utpqu oi4vgj)tion of electric charge.

  Is it possible for two negative charges to at4qxqb*87 c) 8incl cshtract each other?

  Is it possible for a positive9nvfv(( rf x9jywi.3c and a negative charge to attract each other?

  A glass rod is rubbed with a piecerf),q,i ;/eue b n0yygw:r o5i of silk. During the process the glass rod acquires a positive cha; ibn/, w:e rq,euyfyo ir0g5)rge and the silk

  A proton carries a

  The model of the atomu ttt5 w/kyyd./f/0j s shows a

  A neutral atom alwayn)l7 o n2itmc1p 0.dezcov8e9s has

  An atom has more electrons than protons. The aptc,cu*68wf1tz 5okf. po3 ec tom is

  Materials in which the electrons are bound very tightl au -f:rn.s,hhy to the nuclei are referred to hfahs un:-r ,.as

  Materials in which the electrons are bound very looqeqq9yt 0e2- pq 2nb2lsely to the nuclei and can move about freely within tyq-q2be2tp 0q2eq9lnhe material are referred to as

  A negatively charged rod is brohd.f *ntgea m ehg8gh9x)*r9)y-h8ejught near one end of an uncharged metal bar. The e 8*jhfdge tm)ygh-xr.)8g*n9h h eae9nd of the metal bar farthest from the charged rod will be charged

  Sphere A carries a ne)x(hca(ylw - et positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grouc h-we((a )yxlnded. Which statement is correct?

  How can a negatively charged rod charge an elv/2dvx9ra4z.*b bog sectroscope positively?

  An originally neutral electroscope is briefly touched with a positi-h;qgqc6kb 8g;b )dqdvely charged glas)g8hqd - qb6bg q;;dcks rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively chargue se4dplhyl;z8 uuv4 ci*02f;a;hw*ed glass rod is heuluhcl*44wf;e ;sp2*u eih8 y0d;avz ld near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leavesoli/9 uc /zas5 separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to l a/ c9/szuio5the leaves?

  A large negatively charged object is placed on an i)f+58sr nrp-r t r:iq +f2kkz+gdc+eknsulated 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 +e)pfn r:rsgcdq k+k+i8 zrf5rk2+-t, 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 con:,0h,8 jyn 5ymi6/1tnt/hg quku z ifnstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger g* 4d-6zo0o.cljm ff)q:rnh w in magnitude than the second chagdwfh4 6 qzl0o:)jof mcr -.n*rge.

  Sphere A carries a net charge eu 204wnshn8melp3)kand sphere B is neutral. They are placed near each other on an insulated table. Which eunw 3 s)8epmnlh 402kstatement best describes the electrostatic force between them?

  Two charged objects attrjs 3g0scw 44mvact each other with a certain force. If the charges on both objects are doubled with 434 s 0jgwcsvmno change in separation, the force between them

  Two charges are separated bvv0+xi y:;iw qy a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a dis vxw:q 0+yi;ivtance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. zuwf4-rd +rbpr2gt .w y+v 3/n What happens to the force between them if one charge is doubled, the other chargewp-4rzuvrr+/ b 3gwf2.+n ytd 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 distanc* 5zy k2an/7vxyo.qmi e of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is /5*a y y7o2nzvix.mkq placed next to the first electron?

  An electron and a proton aqx - fqqj57 ;1klst5hc/ytbe,re separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if ,/;es5txlj-hfqtqyb 75k1qca second electron is placed next to the proton?

  An electron and a proton are separtm )b47yx0ytlated by a distance of 1.0 m. What happens to the size of the force on04y)mtlbt 7y x 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. kiz h*b z b)e,xcv5:k: 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 *z5h:z v,b)i:k kbxce 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 eqb org0u0y91 kk dfpr1mlil6. /uilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electf/0yom09 u6ir .gdl1blkp 1krrostatic 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 )z0c gwsqc2:so9tr 5u7qdh4vnot a vector?

  At twice the distance from a 3 b+uzz2 i,0btkp,2cequw 7 x5iw,iulpoint charge, the strength of the electric field

  Is it possible to have a zero electric field valuqws(6im o24 wpe between a negative and positive charge along the line joq 2 pw4wo6s(imining the two charges?

  Is it possible to have a zero electric field value between two positiv3py zs3o p34ij;i blk:e charges along the lik34 zo;:py3 3 libsjipne joining the two charges?

  Electric field lines near psitive point char nj0/ qv f91+gojrgr /8miv0yjib9xe*ges

  The electric field shod dxqh ka9w 8d937gj5 skms3-rwn

  Can electric field lines interh:4q1uw2j ig lsect in free space?

  A solid block of metal in elec6 gc vn3hzwf4+ mr+;+letl+ebgh5 3jo trostatic equilibrium is placed in a uniform electric field. Give a statement cgzcf+ ml e3n+o t43b+jhlh wre6+;5gvoncerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of e2r9tf+nq3f2 -i mpngvqual diameters are each given the sam9gf-+v2 pr tn3qf2ni me charge, the electric field (E) midway between the center and the surface is

  A cubic block of alu()d 0nw lngq*wvey2rn3l+vg, minum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concernlw (qd v+gr3y *0,lwvnn2e)gning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near ad;oy i84qm23ao- ln mm il8pu6n electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grounl ;xgx(gzh 7l2ab/e-gded. As compared to the case without the hollow sphere, the electric field at a point directly -agbgl2x(/ ;l e7gxhzabove the hollow sphere has

State three properties of conductors in static equilibrium;0+e7eb ,g bgr ssr9( gsio*uv.

State Gauss's law.

  The charge carried bi( key atjdc6l)q h0q dpucz:4 ;is+0(y 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 +2.00 mC. How many more protons than+puthq0 bgr9 :s*dt1.jpmn7c k-5skv electrons does this piece of plastic havstvu7c-jt.qk*h d+ :9 pp 5 grn0ks1bme?

  What is the charge on 1 kg of prot h 63kc(mgvkve+jix .2ons?

  An atomic nucleus hab: fa (0 o5ft.pb:2kkq s:.hj/biqhuss 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 1.5gia3 +j(bzq1 w cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between tbgaq3z(j1+w i hem?

  A 1.0-C charge is 15 m from a second charge, and the force betwegb*5 juo 4,qnsq)77 rheiml)ken them is 1.0 N. What is the magnitude of the secon7)kmq 5hn,srl7bu 4igjo *q )ed charge?

  Two 1.0-C charges have a force between thx1vy zqv,04kigs s 9on8 sq9y.em of 1.0 N. How far apart are they?

  The force between a qe4kpodaa:j/vwj;mf /7 ch )*$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienzw3+ )mx * g.pe1uh*)gmnhrg ice a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electrix*rwh)i )hg.g3n +1mgz *p eumc force between them?

  Three identical point charges o 9sjpyat**hvs0w r+em)b+jy* f 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* by*jv+aj 9wryms st*0p)+he the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed oovjr*j 0xa pt2l/r2 t:n 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 mark. jl*v x ajo:2t2/tr0rp 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/jo. ae lei;bbu+3vf( at x = 1.00 m; Q2 = 3.00 mC at x elob +.(b fjeu/v3ia; = 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 ,a9h5w (ze 5ko-1qo)y (mo*c a j2bp1ocsbjj athe center of a square, 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 place5ao*q e(1 s o-)wha5 (9,jjcbcjbzk 2m 1oaoypd at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.1oe* gqqz*q)c1 0 m); Q3 = 5.0 nC is at (0, )q1qqcg z*o*e 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 jz/g rdx(2a/d 3g.qpgie y1i9= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forcey xze .ip 1gg3jdi rq(g//d9a2 on the 5.0 nC charge?

  Three identical charges of 3.0 p ti.;25meih, kaam5nhl, * ilmC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magn;hielnhm5,5it a.ak2 ,l* pimitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +b s739s1mrjrtQ and +4Q, which are separated by 3.0 m. At what point, on a line betwbjmsr rst1 973een the two charges, 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 origin and a +9.0-C charge is at x = 4.0 m.9uzwff*4oe8 z0+ )r8fl lvqqk Where on the x-axis can a thirdq*4q8+rullz of w8fze0)vfk9 charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and 7sbsj*ovga 6 3- nbjwy.krp 04charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on itp0 k3j .6bsy4-vrog7j abs*nw is zero?

  A copper penny has a zhaebjpo0 ak :3e q 92v1tl9oh(br5g* mass 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 of gra rgjd7exc0rn46l5 d 0dvity by the attraction of a fixed proton some distance above it. How far above the electron is the protonded 670gr 0xcl4rnjd5 ?

  Two 0.20-g metal spheres are hung fro yx2,p lg;xraac .ywz.);:ipbi/0gwym a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces t y.glc;, b2w;a i pp0irawx./xz:yg)yhem apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a dftfrt7isvez b q8 y2go59l+ -fp*o+) charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from tv+7z*t f2 p 89ybsq-glifdtef +)r5oohe nucleus?

  What are the magnitude and direction oatxv4w xc 1hjo9eo2* 3f the electric field at a distance of 1.50 m from a 50.0-x2vte4hw9 oc1x *o 3ajnC charge?

  A 5.0-C charge is 10 m f;yxdd3 wph g( ki.p47prom a small test charge. What is the magnitude of the electr ygkp7p4.i(3hdp wxd;ic field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test vst8 tw0+wis-charge. What is the direction of the elt08sw s+-wvi tectric field?

  A 5.0-C charge is 10 m from a smazh j(phaz1u3rv)0 r,h8)ut. ewr9bn tll test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location oh0h)p)htva r1r.9u3n z(w 8j,tr bezu f the test charge?

  Two point charges each have a valudd5e t(denpmk.,:m 2v, nr8h37ftuey e of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point mid3en,rd82t . tvunekf,7mhy :e(dpdm5way between the two charges?

  A 5.0-mC charge is placed aeleq1b *3doc+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 at the 3e3o1*d ecq+ bl0 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meu 8ot 6/eriwomz:sy6 z(t 0pe)ter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a linmuit)6ze :8orwzop6/te s (0ye joining the two charges is the electric field zero?

  Two point charges of +3.0 mdz.kgmt5.m 3 iwc0ns(C and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between them?cztd0ws i5nmkg3(..m

  Three 3.0 mC charges a5 3gfvokcg07 c8;/e 1grxjkvire 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 field at the center of thgigekkv5fj/cvgr 37 ox 8; 1c0e square.

  Consider a square which is 1c e)jcgc 03ce+.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC atc)3g cec+ej0c (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 when it is placed in a uniform e*d5m /pdfh yr+a8oo o3lectric field. What is the magnitud/yh8 fr* m3 pdodo+a5oe of this electric field?

  A particle with a chal rd bc;pdr )b6k1 0j*gic58axrge 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 4oix;bu9 :g+ /yt/wrqjx(jqbis placed in an electric field of 6000 N/C pointing downward. What charge must be placed+bj/xtx rg (qi94; o/:w jbyuq on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC s2e/ln:mhn d*. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and directiolm/2 hdn *esn:n of the electric field?

  A metal sphere of radius 10 cm carries a ch.i x4mt)nwl1uarge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sp1w .t)4im xnulhere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is thag4q9rnbfphwh v:i+hz9 ;10a e electric field 6.0 ghaqvi h;h:nf0br99a1pz+ w4cm from the center of the sphere?