State the law of conservam..3yk py2sr 64 nymbotion of electric charge.

  Is it possible for two negative charges to attract 9 0nt2b)eo u9xt7ecvf each other?

  Is it possible for a positive and a negative charge to attract each ohyj0 ukdn . dv6*3ay ol,vqpc6f /2bn8ther?

  A glass rod is rubbed with3l o+(t apm2gj a piece of silk. During the process the glass rod acquires a positive charge and the silkg(2j+op3 a tlm

  A proton carries a

  The model of the atom shows 6p:ny awq7b4ugyz d;6 a

  A neutral atom always 7hq:r -kgjy 4thas

  An atom has more electrons than protons. The ato3+5yzks05z /o wh6, u as idv)ku3kjdwm is

  Materials in which the electrons are / m*q,0hwkn:izf de svzcd 5,4bound very tightly to the nuclei are referred tfd h0dz5wv,*4znim k /:sq,e co as

  Materials in which the electrons are bound very looer:1 yvhiam5:sely to the nuclei and can move about freely within the materiahm y :vaer5:1il are referred to as

  A negatively charged 2evnfom st44f4 :gg3p rod is brought near one end of an uncharged metal bar. The end of the metal bar farthest s 3ntgp 4gvf4:fome4 2from the charged rod will be charged

  Sphere A carries a net positive charge, and sphe;t:* ndzo+4v zevh rq5re B is neutral. They are placed near each other on an insulated table. Sp +vr zeqho4;zn vd*:t5here B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscowq g c0r9 rpyn8jno:j ao/l-+e91k)fvpe positively?

  An originally neutral electroscopzg +j(n /tm5y6jegd *je is briefly touched with a positively charged glass roj/e5 yjg(6mz*tng +jdd. The electroscope

  An originally neutranfktm h ;5+8vjl electroscope is grounded briefly while a positively charged glass rod is heldnfth8kj +5 m;v near it. After the glass rod is removed, the electroscope

  A positive object touches a nj2k/y/jj 1 avykyg:*x eutral electroscope, and the leaves separate. Then a negative object is brought near the e2xjkg vyyak/:1yj/j*lectroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objectx9hf av o24 lmlta,jw838n: co 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, but does not touch the negative object. At no time does either ball touch the negative object. What is the final charg4n to2wa 8 :m83va9h,jllfcox e on each ball?

  Charge is

  What are the units of the Coulomb hmz3dw6k(50agt - nru constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is l x fz8oig -qb pnuylsiy4-i.p94* 9x7qarger in magnitud7- qp8o xu iq.b-nfiig99l4y syp*z 4xe than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near,*i x urtvq.nzak* /z; each other on an insulated table. Which statement bav/.ni*u, x;kqz zt*rest describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargesipv8qi 57bo i8 on both objects are doubled with no chaniiq8vo5 ib7p 8ge in separation, the force between them

  Two charges are separated by a distance d and exert mhr + iiz39 :amv u+s;5j5wfxumutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are themz9sj;55 +w + xhi3fuvur:ami new mutual forces?

  Two charged objects attract each other with a flunvha/bh +58 orce F. What happens to the force between them if one charge is doubled, the other charge v+hl/5 b8a hnuis 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 distance0anl60/pg5ytyv rf e ;xalj +y*upn4m85*z ml of 1.0 m. What happens to the magnitude of the force on 8yl y ev0rmy4pl/a 5nlut6ap *g *zj;fmxn+05the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by kmia0b1 ec:f;51ailw a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron 1ckef ab lwim1 a;05:iis placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What h1mg+qf 95ggqvqh; kk+ gq1x( ze9ff7jappens to the size of the force on the prok9; fqex+vzkjmg17qf fq h gq+(5g1 9gton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center offm a2m1n,b9p r,7lvvw a square. When a second point charge of -Q is placed at one of the squ a 1vvm,pwbn 7flr92,mare'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 centroid of an equilateral triangle. Wo 4r4g)cyk3xb9 kf.w1mibq ll 7 ;lzt8hen a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N llb8c3oy m4 gbfkiq7rx)tz l4k9;1. wacts 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 vector? iugrh*3,; imdq+pqmo+;xm hnk */kb3

  At twice the distance frtf(6h8 eh.nvu 55 fvet2 .qse//nqskb om a point charge, the strength of the electric field

  Is it possible to have a zero electric fit9y(jf l1tgn 5u6(mwss 0vh:xeld value between a negative and positive charge along the line joining the two chu ( 1( t9tj:v5sgywfmsnl6hx0arges?

  Is it possible to have a zero electric field val6e: (ybn)l wv m/8bsevue between two positive charges along th :(mbyws8 nvl6v e/eb)e line joining the two charges?

  Electric field lines near loi5w *twha)3 psitive point charges

  The electric field shw ;v4cpx7f (umown

  Can electric field lines intersec 3/u ; 9rki((5ijczieyou jgy/t in free space?

  A solid block of metal in electrostatic equilibrium is placed in azob:g1t1obx zk 074h le/gy3g uniform electric field. Give a statement concerning the electrib371 ook ggxz0tg/y4bhlz: 1e c field in the block's interior.

  If a solid metal sphere andvs 16rba8v g/h a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and thgb61v h8 a/vsre surface is

  A cubic block of aluminum rests on a wooden tabl02 ( :jozucpz( ,lcmlse in a region where a uniform electric field is directed straight upward. What can be spc(um:l2c,l0 szo(z jaid concerning the charge on the block's top surface?

  If a conductor is in elecwmeaq 8f-a2ynfqv7r2tbph1u/ wf9b6 ;r ej6;trostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groun x.j)zg na4t 85.nqfgwp l:za/7n7ujided. As compared to the case without the hollow sphere, the electric field at a point dirqn pz.j5)tai8wunz7/.na 4x7fg :g jlectly above the hollow sphere has

State three properties of conduco,5z:kqzzd4q gx/ i 8er rvqb:;m 7y6i, v-ucctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron iq86w eaej6 b8ps $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a g r6e:9; 6zfsa*gr llrnet charge of +2.00 mC. How many more protons than electrons does this piece of plasticgl*:az;r6srf 6re g 9l have?

  What is the charge on 1 kg oeujj7po ;0mu 4f protons?

  An atomic nucleus has ajtb,p:+ zg;z 1rkyu6ks+je) 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.blz* j4eq /tn+ tgan sz9m0kv09pi)1q0 mC, respectively. What is the magnitude of mt090alzz9e4v*p +)b/sgqiqn j1n tkthe electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forpba) g z,nw2ecpb 4f 9o)i.07eeeata*ce between them is 1.0 N. o9peie4wb2pf *e7)bn zg ae ac,0) ta. What is the magnitude of the second charge?

  Two 1.0-C charges have a force between th;:-n me:qxd veem of 1.0 N. How far apart are they?

  The force between a )iebu : z/;yqu/ 1flrze4z2g6hdnb:v$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apsec b u.a:) fcu85-vrfart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric forc:ecu5bc 8af)- fsuvr. e between them?

  Three identical point cevxk (ct1n99 iqir6/ gharges of 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 the magnitude and direction of the electrostatic force which acts on i1tk9nigexv/ (9 q6crthe charge at the origin?

  Three point charges are placed 1 4j qg 2,)beoj8wvbba+i3zkd fl90xyon 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. What are the magnitude and direction of the electrostatic force which acts on the charge at the origi wx14 ,bokzb)89 aj feq bgldv3jy+20in?

  Three point charges are located at the following posityaf61 p9ga+gd34uc0 sxy-qfzions: 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 magnitusz9f+34c1qu a xa fdg gy-6py0de of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a 9 7q *+qqgtcswsecond 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 chargecq*79w s gq+qt if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); */8h k p6.hkgc5jhpk4*w0hqed td6 xh Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the mt4j*kq kcw x 56dhhk h6* g8he0./dphpagnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Ql l -nhkd:pv1ifzy6qf)*p r4:2 = -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 kdf64fzlq*pl-i :rp:y1 h n)v on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vdt7rd/*vl sjo 2 +sr )yvg-q,iertices of an equilateral triangle which measures 30 cm on a sldsrjs, +2y*r -ogd7v) vqti/ide. 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 what po gis:* r4di-fmint, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acifi-m: rs4g*dting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-Ct k:y0 3m daxh)y6.l8gmf rn.x charge is at x = 4.0 m. Where on the x-axis can a third charge be placed snykym .a)lg6 8 th:mf .x3rd0xo the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. m 3-l:o (eet c:epvqu)Where can a third positive charge +q be placed so that the forcee3)-m pctv: ( ueoel:q on it is zero?

  A copper penny has a mass of 3.0 g(k-ytebe j20p . 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 agai x7t+bri h/7n5iuo d+0,jcn utnst the force of gravity by the attraction of a fixed proton some distance above it. How far abo + 0hc irb,i+to7nutju7x5nd/ve the electron is the proton?

  Two 0.20-g metal spheres ar9 :;vlcnpj8kc e hung from a common point by nonconducting threads w:9jc vnkp; c8lhich are 30 cm long. Both are given identical charges, and the electrostatic 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 charge of +40e. What is the magnitude of the um)a7de* )aht electric field at a distanca ea m)htd*u7)e of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fi:p awnawfp7da7jn) ; (eld at a distance of 1.50 m from a 50.0-nC77nw: aafj (ndw;)p ap charge?

  A 5.0-C charge is 10 m fr7msvp:z, deyjal/zra ( l6*w-om a small test charge. What is the magnitude of the electric j(e r*a d/vasl-zwz6p,7mly: field at the location of the test charge?

  A 5.0-C charge is 10 m from a sm5:qa,clt o gj2all test charge. What is the direction of the electric fiocq:j ,2alg t5eld?

  A 5.0-C charge is 10 m from a smal , 7/fc/syrx7 z:qjwfql test charge. What is the magnitude of the force experienccwrz:7/ xf7 qq/sfyj,ed by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C :gzpo+ tz2.tz 9q*;cr (vp phjand are separated by a distance of 4.0 m. What is the electric fz j2p .zqr zh+p* 9;ptotgv(c:ield at a point midway between the two charges?

  A 5.0-mC charge is placed gv ;a1c-.eaab at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cmg1 ab vaa-e;.c mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of ahltnyr- rt*vy. 0 qq55 meter stick and a -4.0 mC charge is placed at thervh-rtqly.5 *tq 0 5yn 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 -ktmnx1m(9(vhjv( ,,caa yl h67.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betwee(, vmjmtcl 61(na9(x kv ahh,yn them?

  Three 3.0 mC charges are at the three corners of a square of sijjm 0j:0l-dgmt:;gv ide 0.50 m. The last corner is occupied by a -3.0tj0 jmg:ijmdv0l g:; - mC charge. Find the electric field at the center of the square.

  Consider a square whichvw3*irm 0)nrzgv*yt6fc*rc,k x 8 b7a4wwid* is 1.0 m on 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); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the magnitude of the electric field at the square's cenr i t0d6y fw*wv 3w*k8br*xmg7v)z iac 4nr,c*ter?

  A force of 10 N acts on a charge of 5.0 mC when it jah, z 4dzo/p4b/ 8djhis placed in a uniform electric field. What is the magnitude of this electrico/448zaz /pbhhdj d,j field?

  A particle with a charge of sb)2xfmb;b u xfo 3-q74.0 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 6w3yf- 5wojwo pro3 4f:000 N/C pointing downward. Whf:o4owpow-wyr j 53f3 at 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 (lisf dl/3mf1w ty/.g. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of t(mglf1.ysftd w /i3/lhe electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is tbwu;jz m,; rh4ppywy9l kz*) /he magnitude of the electric field 5.0 l/w*y ;khp 4;u)prw,jzzy mb9 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carpt9 9rp dy/0iqries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphed0rit /9q 9pypre?