State the law of conservation of electr263nqjp c c1odic charge.

  Is it possible for two negatlo* iye.r5p4q7n.l; ,doocw lbrgi56ive charges to attract each other?

  Is it possible for a positive and a negative chargl390iw g8n deo5kwxj: e to attract each other?

  A glass rod is rubbed with a g98( jagj b1xspiece of silk. During the process the glass rod acquires a positga8jb91(g sxj ive charge and the silk

  A proton carries a

  The model of the atom/z)mvjlku jr(86t . ho shows a

  A neutral atom alwayqo1j.i)-)ivl; rzxgl s has

  An atom has more electrv m dpl+s. 701sl+qulhons than protons. The atom is

  Materials in which the electrons are bouniqbveo5(c3: z uu s64on95 jojd very tightly to the nuclei are referred5en j5uou9zsj3 bq(6vo :ic4o to as

  Materials in which th5 1)e+fm 4)kisomeokj e electrons are bound very loosely to the nuclei and can move about freely within the mikef1m o 4eks5) jo)+material are referred to as

  A negatively charged rod is brought near one end of an uncharged me7fi4 36do r vo(gt)* 9ezfacmwtal bar. Theoz7acg(f4o* 9iwvf6)3 rd emt end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neuae/dhj*dfcr.d, ,6 jwtral. They are placed near each other on an insulatdh , cadejwj./f6rd,*ed table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chargeei0 )w9 ;nxibkd rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivelx2i d 45mrut5h0z7 sazsrum 55y charged glass rod. Thd7x42 5 zmisau z5ru5tsr05m he electroscope

  An originally neutral electroscope is grounded briefly while a positiveo(co wt(0us;/nmaaml/* in 7j ;8ykztly charged glass rod is held nea yt n/cu ;*0imns(/laz8( tw;okom aj7r it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves jto) f3wn9:ayseparate. Then a negative object is brought near the electroscope, but does not touch it.:wnt3yo f) 9ja What happens to the leaves?

  A large negatively charged object is placed on an insulated vz ,r0e3mz7c rtable. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path follomecz 0rr,3z7 vwed 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 Cou/r1(3ja(7awjf jlr *zahe r h*lomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charfgst*ao55 lu4h b, z*+dj:acage is larger in magnitude than the ,t*zlbad5*ug5 a focs 4aj:h+ second charge.

  Sphere A carries a net charge and sphere B is neutrajfp0;gf. 4nno l. They are placed near each other on an insulated tab j0n.fpon4g f;le. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other witxal5jp ,rz1p:h a certain force. If the charges on both objects are doubled plrpa: j zx1,5with no change in separation, the force between them

  Two charges are separated by a distaszg.o9j dx .tr k7i7+annj0* nnce d and exert mutual attractive forces of F on each other n.gzx ajin*ot9k70r js.+n7d . If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each otrt h+6-cvr7yto)w a4jb*r.coher 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 74c+or bo6)-wra rcvj y*h.tt centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens to s7ao .56- 5co7se:jk r isden e23ssuithe magnitude of the force on the proton if a second electse7e5u2:i3ckej7s- nss . osa5 6riodron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happen m58vrt 4j8q4;tw(mp d kaql-ms to the magnitude of the fokmt44 pal 8 m -(jq;8rdwqt5mvrce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m.;et05hi)w4p ub f ijeu; tx6xwzso3+7 What happens to the size of the force on the proton if thsiuou w 0; iwe+4x763 t;tbhzjpe f)5xe electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second pointt9)4s2akxbs5 exv0lr uk. (w g 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 center of the square?2g b.5ase4t9l u0kwvsx r(x)k

  A point charge of +Q is uo4., epzw rj.u/b(vdplaced at the centroid of an equilateral triangle. 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 th e.4o(.uj d/buz, prwve 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 v eujc h)l.pu8krsk;1; ector?

  At twice the distance from a point chyjtagb/uz07p,zjqbk/h yf744 r 3t q *arge, the strength of the electric field

  Is it possible to have a zero electric field tm 6wy(2v0k:i3t i rbmvalue between a negative and positive charge along the line joinv0 6iyrbki mm32( wt:ting the two charges?

  Is it possible to have a kzq.s2; ua1ls: pwdvl0 u7.hdzero electric field value between two positive charges along the line joining the tw1q.7 vu ;dz al:ud.h2skwp s0lo charges?

  Electric field lines /f hu0 (v uxjv9cbuo71t(ws7rnear psitive point charges

  The electric field shown: 9yp*vlgc dvr8+; mvk

  Can electric field lines inters col8e9srz:y 19xpv1nrv8 9uoect in free space?

  A solid block of metal in electrostatic equilibriumf8tv8au- fzmqf z47 l*/n;w zc is placed in a uniform electric field. Give a statement concerning th/clw7fz;- q8v *naf8 z4m ftzue electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal d/iwtk75 -e. y icb37s 9ixubjdiameters are each given the same charge, th/j e3i u7i-9idw.kc5b xybst7 e electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woogh9 eecr czy0, ,5o7ncru* mr7den table in a region where a uniform electric field is directed straight upward. What canm,,o7ye0gu* nh 9rz5 ecrcc7r be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium ne iru4t8y.le; far an electric charge

  A positive point charge is esc9z8c.y e;uv//3wp ,cbfm sbnclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow s fev 8 ;z/c39sbws, yp.cmcb/uphere has

State three properties of conyc+-de7kplj35hz t :.s; tel nductors in static equilibrium.

State Gauss's law.

  The charge carried by one el; dof.38bo6 hxf;s 6van:mueiectron 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.;ka/fztxl+ g/g vmg *ft (:7pt00 mC. How many more protons than electrons does t t+ 7*gtvl pf;(gm/kfgtxa/z:his piece of plastic have?

  What is the charge on 1 kg of ox 4g-s:xzq;c/1qs of protons?

  An atomic nucleus has a charge of vepvudoh0gjjrq 84zb /* 7 3+v$+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, w:zu.lbn*mb7 +u/wtn have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betweenb:lnumb.t/z7 + *wu wn them?

  A 1.0-C charge is 15 m from a + x-1zqj0h6tk doouy ;second charge, and the force between them is 1.0 N. What is the magnitude of the second charge?6ohux;y o 01dz +-jtkq

  Two 1.0-C charges ha3o8 dk0 mw a*i4xeni-2zl*phz ve a force between them of 1.0 N. How far apart are they?

  The force between a yvuenk;qm 3m u-wd556oyk.1w$30 \; mC$ 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/h4hcmjl onu/c *cy*v2 9inq+-N force. If they are moved to a new separachqcl2* /ju49nmoyv +/ h *ncition of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mCt*fe+*jbvk; 2 gklnq- are placed on the x-axis. The first charge is at the origin,bkv-tg;*e +* lfk2qn j 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 the charge at the origin?

  Three point charges are placed on the x-axis. A chargen psrtl zk04r*lcq)- - of +2.0 mC is placed at the originnc*lp0s--z4lrt k)r q, -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 origin?

  Three point charges are located at the following posnch970ty6odeq: m m0o; +bck kitions: 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. Wha7yb h0k0;m:nctcq ok+do 9m6et is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the centjnw7xiw7; 9z der of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an elecw7 9jdizw;7nxtrostatic 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,m7zv:xg (xk*vbk5( i2 1ws mqw 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of x7vq(mx5 v w 2*mk1bgzkw: i(sthe 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 v,wi ,i4 w ym7rz32cwbm); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on ti wb v3 wywi7mc42r,z,he 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticq1e)b - j8mywjes of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the ce) 81jwymb-jq harges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whatm( o; yznem-w*0xl+92jhfnzm point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force ac+2lfm*ej ny0 h9owmn;( -zmz xting on it would be zero?

  A +3.0-C charge is at thpl)plxi z g05wc*qu)6e origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zero?pg 6)qp50zlcw*) lxiu

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where cantxe7ax2z )d4y 4yx)tzexa d27a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3qhg i2t v.kcsp-hn, g/p0, td-.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 gravity by the attraction of a fix m cdj:ky4z(g,ed proton somdc( z:g,my j4ke distance above it. How far above the electron is the proton?

  Two 0.20-g metal sphered/ rw*;g2wlaa s are hung from a common point by nonconducting threads which are 30 cm long. Both are given ide/awwl ;dr2 *agntical 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 char j ;+s*wonzug+ge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nuclegw;u +j no+*szus?

  What are the magnitude and direction of the electri+7acp9i,)-9kq ij b xf k9wpd/u(gvm cc field at a distance of 1.50 m from a +) wbpi/ipc7a(fmc uk gd9k, xqv99-j 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnxyu ;c/7l- m4+bhtw)r, i isdvitude of the electric field at 7ir/yh ,sm4 idcu;+)l-xtwbvthe location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direca qt5t)b-xh+ r g sde(lca+f+4tion of the electric field() +l-+5qacadxbt+f he4st gr?

  A 5.0-C charge is 10 m from a small test charge. What is 7c jj4f 3avcmi+lf3;,uie r.z the magnitude of the force experienced by a 1.0 n j3l,4 me;3u+i.c a rv7czjfifC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separir4 mzdww5th:ks 0s-/ ated by a distance of 4.0 m. What is the electric field at a point midway between the two chargess d5m-h0iwt:k z/ 4wsr?

  A 5.0-mC charge is placed at thebgoc 5hx3 y6j4 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm marx3c54j 6yobhg k. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the v)kxnsh+libk( btchv4/; xz5a vs-370 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 two charges is the electrvv x /itsnh)v x4+73chka (zk;5lb-sb ic field zero?

  Two point charges of +3.0 mC and -7.0 mC are 50x:z0qr mu,yf jf5biplaced at x = 0 and x = 0.20 m. Wharm yux5bzf5 j0 :iq,f0t is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. vdj lsjz4(9- w26cal xThe last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square2a6d94zl -jjvcxw( s l.

  Consider a square which i+u gtzfsuz6 o ;;y:a q8j.no7ss 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'su7o s6ytq .:f anjogzzs8;;u+ center?

  A force of 10 N acts on a charge of 5.0 mC when it is placexoy) r;t8dar .d in a uniform electric field. What is the magnitude of th. oxyr)trd8;a is electric field?

  A particle with a charge et8spgga: k-w di5 qw)oz/+u* 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 go+jrfh qkp9/ k+:jf2w is placed in an electric field of 6000 N/C pointing downward. What charge must be plaf9k/o+jwfqk+ :hj rp2 ced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carr*:, wsnab.t36 6r 9pcyuiscyn ies a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of g rwucc9y6ps ,* yabni:. t3s6nravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 9b j7c* y6xeku*zayd-mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfack* auz9 jy-6x* 7bdeyce?

  A metal sphere of radius 2. qx t t bon:p16c,pr0))w*ecsv0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cs6)cwvtrbp 1p0*:e o tx)n qc,m from the center of the sphere?