State the law of conservation of ele-zvaz9 .bl *nlctric charge.

  Is it possible for two negative charges to attract eacqdwi.w /o,7dcr;g 0yvh other?

  Is it possible for a positive a3(5by 2fszo h+ugj l (:smotei6nu3h/ nd a negative charge to attract each other?

  A glass rod is rubbed with 43mo0m y8o 5sm gq8cz(4yzcj u2ow8rta piece of silk. During the process the glass rod acquires a positiveo 48z0oymyg tq2sccm(4 35jmu8 rwoz 8 charge and the silk

  A proton carries a

  The model of the atom showsey*fon.9 me.7kg9yet a

  A neutral atom always hasfk w;co7a1-ta

  An atom has more elec4 eqw hi3s7pot;i4u rmbbt+0 (trons than protons. The atom is

  Materials in which the eleri/a*6b6cm aavwp)*l6 y2x hv ctrons are bound very tightly to the nuclei are referred tol* pcv/66ay)hab6 rv*2am xiw as

  Materials in which the electronu i1ihu1r,+)b0go4 to fc;jvd s are bound very loosely to the nuclei and can move about freely within the material are refcoug,fu+i;1boirv40)tjd1 h erred to as

  A negatively charged rod is brought near one end r:cqe.z+ojn./o r r:dof an uncharged metal bar. The end of the metal bar farthest frc /o.de+r :nr.zrjo q:om the charged rod will be charged

  Sphere A carries a ne o9de+fb-ih dg ,5 hbel35c* eveg-h3af.7jset 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 grounded. Which statement is correjd.hag, +d 9-e5v7 53ehfsiehfbogl e3ecb -* ct?

  How can a negatively charged rod charge an electroscope p68y,g,tsgq hd ositively?

  An originally neutral electroscope is nsi*h :vt /1ulh+ o9ibbriefly touched with a positively charged ith/lvi h: bu1 9n+s*oglass rod. The electroscope

  An originally neutral electroscope is ground2 kcv+do6n :j 0ybz4(wa fh-fged briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electro 0a: kybhwd6fov f(2c4 g-jzn+scope

  A positive object touches a neutral electroscope, and the leaves*u 5m5vzcez2qgj2ej5 separate. Then a 5vm5 z2gee q2* ujcz5jnegative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. w+ y:syy ko7zi 9y:e8n 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. ynw: 8yyk:o +7z9ies yAt no time does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of 8y:; u i q2)wbal7,dzizc;qp ithe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first cfhq -)v,rnk ,b mwsdbez;6sc/83p1z eharge is larger in magnitude than the ses61zezbk/-b3 vpwem,h 8r) ;fn sd ,cqcond charge.

  Sphere A carries a net charge and spherfupdzd+r f* )mh8;z o(e B is neutral. They are placed near each other on an insulated table. Which statem *+ dd z8zhmu;rf(fpo)ent best describes the electrostatic force between them?

  Two charged objects attract ea21b+f jwujf jyt:n 10uch other with a certain force. If the charges on both objects are doubled with no change in separation, the force bet0t fj1:u2 unw1y+fjjbween them

  Two charges are separated by a distance d and exert mutual attractive forces o 8idw .n:kmi0vjfr2 qmx3xt0; f F on each other. If the charges are separatemtx idrq.032f:8 mkwvxj n0 i;d by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each otherb(y-n0s+yj9/ 4juyxnk ;ccd ynv1rs0 with a force F. What happens to the 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 value? The force is now equal tnyn cny4 v srd;x9k/10b u(yjc+0 -jsyo

  An electron and a proton are separated by a distance of 1.0 m. What happeh g8/7 :zqfmdans to the magnitgh d:/8amqz7 fude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by ay9lk3fmq;v4+fjx qdn wm 8b+ 8: ye1fa distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed nmd fqjv 81a: w+9 kn y483q;+fxbeyfmlext to the proton?

  An electron and a proton are separated by a distance orourei7+0n :xigb2)g f 1.0 m. What happens to the size of the force on the proton if the electron isg)x2:on+ei0i bg urr 7 moved 0.50 m closer to the proton?

  A point charge of +Q is placed az 9ao nya0cv llo*;t8)4cxph ;t the center of a square. 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 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 centea)c0 9* hozcl 4xa tlo8np;vy;r of the square?

  A point charge of +Q is placed at the:1ioj3/yb-b ir ej 3 2awozo/v centroid of an equilateral triangle. When a sec3zir /jw1o3iojey-/ 2vb:o baond 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 not8gcxc5 )i8cx lo.noy;.khi +g a vector?

  At twice the distance from a point charge, the strength of bcp40tcsb x47mb(gr76b-l tsthe electric field

  Is it possible to have a zero electric field value between a negativ+ g,fdajbp k 6g0i62twz5br3ge and positive charge along t,b03tkw+ ij2a zpgb5 fgrg6d6he line joining the two charges?

  Is it possible to have a zero electric field value between two positive chct:9f5 rkah2/ qrwmva8 s duf*( tj)3xarges along the line mk2d atr/a vs3):c9*fjxfwr(8h qt5ujoining the two charges?

  Electric field lines near 5hppxtq 9 a0w c+cvj 2e0cwu26psitive point charges

  The electric field shown6jxmlcw(o(ju - r.jc9

  Can electric field lines intersect ipv6 7bg3*-5foei*dt fjgw bv +n free space?

  A solid block of metal in electrostaticrd n,uuq2a8ujlry;+3 equilibrium is placed in a uniform electric firru n+2 y83, ldqju;aueld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and0-sdvkk,mk 0;97k o4b sw4fgs lq ou3h a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surffoo kqd4s,3 sl4790kk - vmbkug;hsw 0ace is

  A cubic block of aluminum rests on a wooden table in a region whep5 yj, n,s 8p4yisyav/re a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top y584siy n pv/,,s yjapsurface?

  If a conductor is in electrostatic equilibrium nezdcp-gea3h*p j3+22 otpq( 0dkb0pkz ar an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundsck9; ivq* .m,gb pq k r1,8zm*huce87 sfzq.xed. As compared to the case without the hollow sphere, the electric field at a point directly above the hol1 q,xfqmc**hc 9q.p8k,zmb;su 7kzgs8ie.rv low sphere has

State three properties of conductors in static equilibriu,wwk2h olqka r*b5. a;m.

State Gauss's law.

  The charge carried by nux)-pp9 v(;lekr7d c 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 +2.0 s)m,hpb*s y8j0 mC. How many more protons than electrons does this byp8sj* m), shpiece of plastic have?

  What is the charge on 1 kg of irsip * )rnj nzb: yw1+)ses)+protons?

  An atomic nucleus has a charge ofhhh 01c gd j;s4ltkl1: $+40e$. 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 c(0 mfu6c5*v;k (kilkhosr/1pd w j6iuharge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric f ru d/0vs; 1 kc6w 5k6p(mfl(k*iojhiuorce between them?

  A 1.0-C charge is 15 m from a s2c:,+n,r7 uksgasav -fkk d*gecond charge, and the force between them is 1.0 N. Whackg as -,ra7su 2,kf*: d+kgvnt is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart a;tcw3f-a 5n. s ylf4uzre they?

  The force between a jyzo nz y)rvl.6g62:i$30 \; mC$ 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 force. If they g b1, fqoa8x96oqj;tt are moved to a new separation of 8.0 cm, what is thetxjo,qq61 ota8;b9 gf electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fi:jju10tnzucsx4exulr; 6 fsb* 83*kz rst 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 mazkuusn40:*lr*xcufs3btjze x68 j 1; gnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axisjxme l +zbti*29n;v 4eghql86. A charge of +2.0 mC is placed at the origin, -2.0 zgtemih q b; 84j6x9nl*elv+2m 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 origin?

  Three point charges are located at e4qk+: j/ssxft*uujw/7z v .r the following positions: 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 isv/s. krwx zje j u+/t4u7fqs:* 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 pcanha w8ung-ia15r ; /w h8r7woint 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 thawawi7wng 5 u1r-n ;hra/8cha8t 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.:ei w1m(h(nb pwfo/a)10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charg :hi)(ew( pwn/1 obmfae?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.01 )im2n,dc jrg nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forcndr j, 2igm)1ce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilat7qxd5 dop/n n v1p:010 xjfb3 3mfdafceral triangle which measures 30 cm on a side. Whf0 npp acod/03:x1mj3 7 1vn d5xbfdfqat 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 what1u kw1u(aj/ hugt*/o3mnb5 n a point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic fb/jho3 /uak(gt1n1 uwa n*5umorce 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. Where on hv,uvk/ j6:,ey0- mxn o(rwpv the x-axis can a third charge be placed vjmvr (e-:w,hu,k 6 nxyo0v /pso the net force on it is zero?

  Charge +2q is placed; tgeciija-e 3g(4 :jj at the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it istj ejcj-:e(g 4a 3;iig zero?

  A copper penny has a mass of 3.dr *xs- wfai( vov/c..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 wpqrviwp8 z2 okm o 01nyz,+-7force of gravity by the attraction of a fixed proton some dista-zo, yzpm+ irk qv01p o8w2w7nnce above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung frof wwb ))-le o6lbt.jo3gqz2b:m a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsionfbwz2t.-6gloq oj el )wb )b3: 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 chargpoas)v ( *7wspvz l7t-.io i0xe of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the n z.ois* p7)0p (avw-loix s7vtucleus?

  What are the magnitude and directio(xuhj3ic+d f ty2:*ee lwa*1gn of the electric field at a distance of 1.50 m from whaeu1fe i3y :j 2 dcgt**l+(xa 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charg)j xb 3j+rt1rpr mj1x)e. What is the magnitude of the electric fie r)mj3rj x)xt1p 1j+brld at the location of the test charge?

  A 5.0-C charge is 10 m from a sma ba 5mfn5l9ir5t:ud0dll test charge. What is the direction of the electl0:a mb n9dd5 trifu55ric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of tp52- xibydw4ihe force experienced by a 1.0 nC charge placed at the location of the test ci -2bd 5i4pywxharge?

  Two point charges each have pa81s :lpi* xz0z2x8)h u dcxta value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the twospuztx zacd *p02lxi :hx8)1 8 charges?

  A 5.0-mC charge is placed at the 0 cm markxl*i k7(qf,ufzd) .)dj/rp ufz1z 1p zib;s9l of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 3bzrj l7z1dz9p q/f(k,f)zs1)d *xf i; p luui.0 cm mark?

  A 5.0-mC charge is placed epyr(,hm4 wye.:0e uk at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the :me0ep kyreyh(w4 u. ,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 = 0.20 m.lpoz,ghx+8c . What is the magnitude of the electric +zgc8 .o xlph,field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squareu qs4tw+rp-e+ of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electr4eq+sp+- twr uic field at the center of the square.

  Consider a square which is 1.0 m on a sidj/blil g h*rq- wjt*/0ep y7(cm haf:,e. 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 theb 0:h/iryg-ep*a7 qmjj f,(/cltl wh* square's center?

  A force of 10 N acts on a charge of 5.0 mCq2zn9n6tfzrjt g fa(4 6o)6bq when it is placed in a uniform electric field. What is the magnitude t rn6)o bftg z(zj6f42q qan96of this electric field?

  A particle with a charge of 4.0 mC has a mass8hn;xc7f2f t /jqzcu / 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 plaffvzedezy,76t : 19kl ced in an electric field of 6000 N/C pointing downward. What cha:z7vf1e6 tzledy k9,f rge 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. The ball is placed o)z9pn1 rx6fbinside a uniform elecfp rx1z)6n 9obtric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cmufi k8-9 rt unc8jgl; 0c2:bbp carries a charge of +2.0 mC. What is the magnitude of the electric field 5.098ncc g:i b-rlf ptb0u j8u;2k cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is thczk3 /.om bmvam 6ja-4e electric field 6.0 cm cmom. j/v -k baamz346from the center of the sphere?