State the law of conservation ofc1sm* h8 wnava )y8nw, electric charge.

  Is it possible for two negative charges to atc+1am lmfk o1l6c/ 0dptract each other?

  Is it possible for a positive and a negatbl f6 cf1aj 3v,nb0*n( s.fiprive charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glaj (lv 9 g7 mj,bxo8 v.r s785t(elp5sxunxh)fqss rod acquires a positive charge and the sl(mt9)xsl7 qsufpxnhx,b.r( g858 jjo75 vv eilk

  A proton carries a

  The model of the atom showafht8ixs 24j *s a

  A neutral atom alwayswzv :4)r/ 5q lr4wr5qt bmsw)j has

  An atom has more electrons than protons. The atom is+3ouj2aj kf4 j

  Materials in which the electrons are bound very tightly to the nuclei afdq 7,tg*4 s,ullkxu 1re referrxfudq,ust , *k714lg led to as

  Materials in which the electrons are b 2ii :lmo 7n7z4mo;qqzound very loosely to the nuclei and can move about freely within the material are 2oq7mz:o 4ilq ni;7mzreferred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. ervpg6v/ 94jkaqn7tq f sg4 54The end of the metal bar farthest from the charged rod gfs7ekr4g/4apv9 q qjn5t 46vwill be charged

  Sphere A carries a net positi* hbmmb-ii b9/5xcwf; ve charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire xbcib /5bmf ;h*mi w9-that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electros m55cs6vway l1qlw54wcope positively?

  An originally neutral electroscope is b)phb ;r+f 0;h t,gjrynriefly touched with a positively charged glass rod. The0;fn,+)hp rrjbt;gy h electroscope

  An originally neutral electroscope is grounded briefly while a positively chan(62c.pa0r) lq d ho k5icsw5jrged glass rodnahc26 ki(o0 d 5)w.qcs j5rpl is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral,y nvcis4k,x : electroscope, and the leaves separate. Then a negativ ycin xsk,4,v:e 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. A neut ct52uy ()vvflral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallv(cf lyt5v)2uic 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 constan448 ( hbftgxmgk7y, fyzqf 93kt $k$, which appears in Coulomb's law?

  Two charged objects are separ2rggg s:k,wuelw(u7 * t syws:p*l ;7qated by a distance d. The first charge is larger in magnit:w*p:q*lgt, eg r(727;uww y su lssgkude than the second charge.

  Sphere A carries a net charge and sph3b..pbk w 8*daoq*(f aul -uxcere B is neutral. They are placed near each other on an insulated table. Which statement best describes the elect.kb* wua (cpbo x.f-3 a8ulqd*rostatic force between them?

  Two charged objects attract each other with a certain force. If the charges jdskec2 nhm6,1o2,h v on botjs2 ne6oh2k d1,chvm, h objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exertcv*93vd)ae/4cm;ayzk p gd6 k mutual attractive forces of F on each other. If the charges are separated by a distpk6cd;4 k* yam)3cdeav/vzg 9ance of d/3, what are the new mutual forces?

  Two charged objects attracfi9q o :yigf0ad8 qju6-4 s/i:bbzdx1t each other 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-xid08o sy :/ 69ugj:diq 4zqfa bif1b their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are se(/l(cjtz5(ti7zrz xj7 ub.n fparated by a distance of 1.0 m. What happens to the magnitude of the force on the z7(5lu c(jzz. /itb n(fx7rtj proton if a second electron is placed next to the first electron?

  An electron and a proton are separatedaf.c0si4+8dj yiss 7p by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second ys 7 4sjisf80d+a.pic electron is placed next to the proton?

  An electron and a proton are separated biv 8t pse1j/3oy a distance of 1.0 m. What happens to the size of the force on the proton if the electron is mi topv8j 3s1e/oved 0.50 m closer to the proton?

  A point charge of +Q iz w-yn5jm pa8c2gs:*. 5otf czs placed at the center of a square. When a second point charge of -Q is placed at one of the squntj z.5:azy5o-s2w* p g cmf8care'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. 2qyebx o-8(ql 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 the center charge due to a third charge of +Q placed at one of the other vertices? (q 2y-8oqxlb e

  Which of the following is notz 4kfzm/80njfg 5b.fnze 0kg(w ..wjq a vector?

  At twice the distance f1n+ac/ xn4js rxxr o-90j:.gl9 ,r) tz lrqeswrom a point charge, the strength of the electric field

  Is it possible to have a zero electric field v*jz -92(i.pvhi2m kz upzfve-alue between a negative and positive charge along the line joinivv pkz2jziu*. mp9e2zh i-(f-ng the two charges?

  Is it possible to hadr6e8 upgegoa:893 ll ve a zero electric field value between two positive charges along the rgu ape8l9d e63lo 8g:line joining the two charges?

  Electric field lines near psitive poingj6/ h+qt d1ebp2 f/k8dklix-t charges

  The electric field sm.+3phld 5x zk otzm9ui3/+johown

  Can electric field lines intersect in free sogbas8p(d /;aqkx4 4mbmq4 4p w4k l5fpace?

  A solid block of metal in electrostatic equilibrium is wjkth/ 76ng/p placed in a uniform electric field. Give a statement concerning the electric field in t6h/7nwtgpjk / he block's interior.

  If a solid metal sphere and a hollow metal sphere 1d)cq; yj d;i+vpqki)5pwi+l of equal diameters are each given the same charge, the electric field (E) midway between the cente;+5qk i ;ipy)j+dwpc)1dli vq r and the surface is

  A cubic block of aluminum rests on a woodexm*d jyi1x6 4qv ubj;u4i2c.qn table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surf1m;4q4c.*iyvqxdjb62 iu xuj ace?

  If a conductor is in electrostatic equilibrium near ahqb5 j9(b7ybtr o2- bkwdgq5us2/ q9in electric charge

  A positive point charge is enclosed in a hollow u.6qw,k,y:kcfrlew 94 rsw wa55d-ebmetallic sphere that is grounded. As compared to the case without th 5 9y4s,:ekdw uwr,bfewk.-5 cwrlq6 ae hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors irfjs,u4 : m8d4bzj, fmn static equilibrium.

State Gauss's law.

  The charge carried by one electr ;uy7f)b4qxei 47 yuwcon 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. y*k bl*mnn wss43t ;2qldur2.00 mC. How many more protons than electrons does this pw*s.4rs kll mt2*byn dq2; 3uniece of plastic have?

  What is the charge on 1 kg 9la4-gzyfm2w9xp *cao()f5 f9 oyngs of protons?

  An atomic nucleus has a ch-/ 6a cesqb5ndarge 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,xd: yy8ipzdu5 r ;f,.p respective yzrp, ;ddp 85ifxyu.:ly. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is v9+ig33at.(3snh t8htzp az f 1.0 N. What is the magnitude of the second ch.8 v t3(hsi+t3hgazt zn3a9pfarge?

  Two 1.0-C charges have a fil73)yc okm gc)h*jx7orce between them of 1.0 N. How far apart are they?

  The force between a * owxddo flyqvq-55pz(v, -yor)/2 dp$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expe19ujchs i(v1prience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the ei (psh1 juvc91lectric force between them?

  Three identical poinjp-3(r4 cb-d5 +djr bmji+fgb jsg* w8t charges 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 ipirf-3(gdj+ bd+ b j 4cr-ms5jgb8j *ws 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 placed on the x-axis. A charge of +2.0 mC is placwr(l gk k-yi19s zfj6(ed 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 ol szykf(r6 jig-(9 kw1f the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following po-/ q01uvxc.oqt6hev 85n bz phsitions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x 1x.hqovt-6b z5qv e 0/p8 chun= 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 the center of a square, and a seca ys ---e clp6ww8gc)lond point charge of -Q is placed at the upper-left corner. It is observed that anea -c8ypw) 6 lwl-gsc- 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 placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nw raztt/3. +wrb3od4m:-cez i C is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whae :irz.zr 3 w4/wc t3-otd+bamt is the magnitude of 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, 0.10 m); Q3 = 5.0 n j 2acraxp13m1zs( kc k;hd99h 84uttnC is at (0, 0). What is the direction of the net force on thezkka ;819mnscj 2d1r ht(x4pc3a h9tu 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equirby;0w9*ccb:u r2qbx chwyrh6 )h*k4lateral trianglec;whxrq6 cb0yhy4r *cbk9w2: hurb*) 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, whvc m+vq m9;tu0ich are separated 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 th;+m0 qmvc uv9te 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. Wherer-a+)j 0vgqn b on the x-axis can a third charge be plar gb)jqvna+-0 ced so the net force on it is zero?

  Charge +2q is placed at the origin and chargev-k(5yt fquf7 -q is placed at x = 2a. Where can a third pos(qut k f-7vy5fitive charge +q be placed so that the force on it is zero?

  A copper penny has a mass ofb 9gnd8 x5iaax(yaq1,y ik46g 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 forcejoe6 hsc**ook:le 1d3co9j tp lkb82p3dc5f( of gravity by the attraction of a fixed proton some distance above it. How far above the electron iss *6d 1 5b*o2koo :d3jhckcp 8llj3ocpeft9e( the proton?

  Two 0.20-g metal spheres are hune 0;6 pqt;guucg from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces 6qtugu; ;0pecthem 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 th0dh4.z(t7c nru( iafa e electric field at a distance of 1.at(0 czf (4ud7anr. hi0 m from the nucleus?

  What are the magnitude and direction of the electric field at al4.tpe v8l,d26d jy fb distance of 1.50 m from.t4ldjpy2 b e 8l6fd,v a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small testzkmsu55w2 e k50y xpqu;h.3e.q (goxa charge. What is the magnitude of the e.ee aq;wo32p shuy55( 0x gzkq.k5xumlectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge.;+jpouq *heal97jj x3q/k8fz ul7 jt) What is the direction of the elecqlxjte*fqa+ 37ph7;k j/)ou9j zu8 jltric field?

  A 5.0-C charge is 10 m from a small test charz5-.i+a lxj ldm-5.zkvgke m,ge. What is the magnitude of the force experienced by a 1.0 nC chargzmlm- .ejki dvl.5 kga5z ,+-xe placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance of uw 8lna(2jfg onklchy+68(hv : mcf. /*ho8xt4.0 m. What is the eleym2hwln8jxg8nh:v*c/8 clfkh .o 6t u (a+o(fctric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of wt0 y:s0o- , d1g+ldyopau1zm a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm m1 y:1wpg-lyd0 m +z,oudat0s oark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -s5e1/t pfx 9a:ct5mml4.0 mC charge is placed at the 50 cm mark. At what point on a le5mtx fac :pl9sm/15t ine 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 =5kv f 96xos bm8upk5/l 0.20 m. What is the magnitude of the electric field at the 5vfs 5l b9kpmukxo8/ 6point midway between them?

  Three 3.0 mC charges are at the wikr9 w o.i8*jthree corners of a square of side 0.50 m. The last corner is occupijki *w.iw89 ored 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 aua7 5z p4aqy)h 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 sqh u) z5apq4ay7uare's center?

  A force of 10 N acts on a cha 5v (+y8bbxan;v8rva tkbli* 9rge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electricbby t8n5i( ;+xal*vkv98ab vr field?

  A particle with a charge of 4.0 mC has az9sql11(v dpy 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 whdts e by0f-3+pe/g1N/C pointingb-pf et ed1g hy3w0s/+ downward. What 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. The biio .lis 8p6;wall is placed inside a uniform i.pw6i8os ;lielectric 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 cm carries a char5k.jyn4uyhsi3jp 0fr mvx2 ,:ge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surhmj,0y4v :nx3iy5j u rkps.2fface?

  A metal sphere of radi a4cz mj 3c;piu*r iy;;a-eru(us 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the cenreycuj iu3az a ; ;i4(*rm-pc;ter of the sphere?