State the law of conservation of elecnkz1p4h t +h,xtric charge.

  Is it possible for two n u/,b8kekmj ,iegative charges to attract each other?

  Is it possible for a positive and a negative charge to at o/q/o2ob7o estract each other?

  A glass rod is rubbed with a piece of silk. During thexe.s.ixd 5 l/f process the glass rod acquires5les /dxfx.i . a positive charge and the silk

  A proton carries a

  The model of the atom shd;y ),h ahqu.oows a

  A neutral atom always has ; 1w6sy9o)lwe2nfle p

  An atom has more electrons tpujc+d baq ,82lg, 6vfhan protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refcaj, agi(wl63 erred to aw3a,lgc i6j( as

  Materials in which the electrons are bound very loosely to theq nkds9rz/w -6 gb 5bsg.f5j(t nuclei and can move abtjbqs/ zk( ng g6.r9b-df55ws out freely within the material are referred to as

  A negatively charged rod is brought near one end of an unchar nh39ml-eyg, x c,jo0w) k73d qm2gaiimq-v6 kged metal bar. The mxy e, 0hmwd3-,iqk2jkgiq-) 7 mnol6gc3v a9 end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pla6j w:o7k bc92/zok m-kdf(j efced near each other on an insulated table. Sphejk-zf6 9c/wdo oke 7kmjf2( b:re B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chaa tq(v.)9iwzafzkhh(l 3a p )2rged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivelyz 81,vc*5nnvrn1 vzr4kpq;s6p(va (y mzyl a* charged gl8sv1k ryrzcap4(vznnv;5l1q vz ,(* y6*anmp ass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a p8-s +:hsbz/hbvx+, dk tzy3kaositively charged glass rod is held near it. After the glvx,t8:bh-shaz b/ syz+k 3+dk ass rod is removed, the electroscope

  A positive object touch;aeavt h obj7 /z;c-7ees a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, beazb-oc;j/7;ea 7ht v ut does not touch it. What happens to the leaves?

  A large negatively charged obj x(nfua* p84uvect 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 ro f4u8*xuv (anplls 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 constaxx b/-gm- uhx1nt $k$, which appears in Coulomb's law?

  Two charged objects ar :,zh3nra aqz0e separated by a distance d. The first charge is larger in mr,aq3an 0zh z:agnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near.pz(z b)j,f tne3;x3z zg8wuo each other on at z8fxnjzub o) zgz.3pe, 3w(;n insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges o)cyx)c x8ywuzde6)s 0n 6mzdsov42o: n bo sdd)6:o 6 28z)ezyuxm o )snvcxwc4y0th objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance :if.+te uf,)vu - pepau36u2mo hu(cyd and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what ayt,m3u:o .fe(puuau)p6hfuv- ie c+2 re the new mutual forces?

  Two charged objects attract each othe 7aq.6s s*my.fgu+ijo0sv) zgr with a force F. What happens to the force between tas fo.vszjm+* gs6y.i)7 qug0hem 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 to

  An electron and a proton are separated by a distance of 1 oc7)ida2 0xzf4yy9pn ir7xm9 .0 m. What happens to the magnitude of the force on the proton if a second electron is placed next toxixi7 m)aopcfd9z 79y y40r n2 the first electron?

  An electron and a proton ar, 6 gom(q*p3i tzrgkjf0)y cj1e separated by a distance of 1.0 m. What happens to the magnitcj )6jfritgp oykq(0,1* m3zg ude of the force 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. What39ljccbt4j4d q2p+ d:p *e fui happens to the size of the force on the proton if the electron is moved 0.50 m close2c9cde 4*jtjd 4p+ufipb:3q lr to the proton?

  A point charge of +Q is placed at the center of a squaret5bh mr:qr+ 0*te0(sa: twelm . When a second point charge of -Q is placed at one of the square's corners, it is obseatrqemt0wrm 5le:h s(+0*: b trved 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) lpqtua,ywfebq 3+ ;* the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force ely ,t*qb)w+u ;a 3qpfof 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 followi 6mnaf;+ llef-ng is not a vector?

  At twice the distance from a point charge, the strength of the e 6uzpr6w c9ff3dvk);m lectric field

  Is it possible to have a zero electric field value between an7 shkddf60y uh6v;7hl l),he negative and positive charge along the line joining the two chl,7hhn0d7 fdvkh6hyls6e ;)uarges?

  Is it possible to have 0c -4j3l8waqfiare4c a zero electric field value between two positive charges along the line joining the i4lc cwr aqf0ea8j43-two charges?

  Electric field lines near psitive point cha(t g ((cpe0btfrges

  The electric field show np)th7 9)ac28 xkqfii5u4cain

  Can electric field lines intersect in free s3hrslej/cwbp gkxq3fz.)ue0n-8 p2 ) pace?

  A solid block of metal in electrostatic equilibrium is placed in a u 9ugcl*svq,r84z- i yiniform electric field. Give a statement concerning thezs-c uqi4y,v l8i9*gr electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameteheosjye-+w9 dx+l9 l /no m/v9rs are each given the same charge, the electric field+e/9vhe9myj o/ow-xs lnld9 + (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where aocq+nfk8q15iv *9 w fc-nqb ,n uniform electric field is directed straight upward. What can be said concerning the charge on the block's top sur9nw81q*b+ i-5 nkq ,convfqfc face?

  If a conductor is in electrostaqpej4z63 *y7)t -1lwt yjt cywtic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere thaxz3 z;ve3l4sk x gc8h.t is grounded. As comparecz3x;4zx3. klev8g shd to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stati/ kvph s x6znb-*yu b33r*fec:3w no)9*k ivxpc equilibrium.

State Gauss's law.

  The charge carried by one elfhh439hld7xc7v+etk4nt m.e ,zr (svectron 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 thz1e+(q x:d1) gq h;fpq 0leyksan electrons does this piece of plaqqgedyz;11xq)0sh:pkel+ f( stic have?

  What is the charge on 1 kg of przj31oo +6;c/wnasi mp otons?

  An atomic nucleus has a charge ohd9x .sm : t+ppj 5dnfa8d,r.ff $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, se/;w; vcldjyq4 77z/nsm1ycb (sc vg6f parated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the mmj(/6 q7 b7dyns/1lz;vfgcy4 cc wvs;agnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them ,hhcpc n j+7umwc+;; wr5 -bnuyv2:bpis 1.0 N. What is the magnitude of the second+b;m:2rn 7hvwhc;yjnw,pbcpc-5u u+ charge?

  Two 1.0-C charges have a force between them of 1.0 N;-20wpi moxa 1higvh/. How far apart are they?

  The force between a u kp :u2l9sjd sn5*:ud,bz38 ufg7kx w$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencevu+:.2orrpobnvb( m + a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwe. bornrbo v+pv+m:2 u(en them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firkucf 9.,vqfl21vvz/ -l ge rnsoll*g 0/;di,z st charge is at the origin, the s;lfgr,zv,/1s-9llk/uef*q2vn0cl do z.v i gecond 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 ar vzd;-oornip +g.(sb 5e placed on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to tho5rbvsd -p(onzgi .+ ;e 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 arey;va0 vq- x)wd located at 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 is the magnitude of tv;qway0 )vd-x he force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a squardg o.dyo7 )px, ;,c6twyw)px qe, and a second point charge of -Q is placed at the upper-left corner. It is observed that qodgw); 6t,dwx7p)y pc , yx.oan 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 nC i bo)pm /b meb:kepga)c518qi - pp:*yps at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net *8 ibb5)b)- yp1mp:e p:me/gpaokcpq force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.c;h* z0u42ip4o0khv obcuy ruab5/ t70 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the ha5cy7br2i puouv; 0*/0b4hcokt 4z u direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equiaxnxx- e lp069lateral triangle which measurnx6l0 xepax9-es 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, which are yllv2,8gz ol /xlv2f5 separated by 3.0 m. At what point, on a line between the two charges, would it be pos2 5xzl,2g/vl fv8llyosible 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. Where g cl:d-9 gn8rqn( tsx*on the x-axis can a third charge r-l*d(s :ggxcq8 9tnn be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at 1mo dlbl a)sb45q.80 mb 2trp n5fwdl/x = 2a. Where can a thirdmldbqll5 bsw./ d5fbo)0p8rm12atn 4 positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.uci8-vb06*l, bz-jzu9 y lir x0 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 fo041pw lgfwu-hl; ;dh frce of gravity by the attraction of a fixed proton some distance above it. How far above the elwufhfhgl01 -w; d 4l;pectron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads wu4p s qxeup at:8 hr4:u41b;syhich are 30 cm long. Both are given identi:pu :4pauqxu 4rsysehb;8 4t1 cal 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 magm 8-:+rl iivno bja5r)nitude of the electric field at a distance of 1.0 m from the nucleus8r bim:vnoj-la i5)r+ ?

  What are the magnitude and directionsy- lsnwa */8;i aw*h u1dku9wwhhs.( of the electric field at a distance of 1.50 m from a 50.0-nwwhlu*s-ua;hs.ni w 9s8/w1k d*ha(yC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of to-)zr15yc bvqb9o: fuhe electric field at th)oyvb9fb5:1 -z q rouce location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the di*iy h9:gcq d xum*ptdp:(s99drection of the elect9(:y cpmhg d9dx idqs*p *:u9tric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the fa:i1ud-* y, v e8h;avcku o4jborce a4vuh -; ,i:8kce *bou1jyv adexperienced 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 and are separated by a distan2s;4:j,pu 2ti * btinuz)/nw c jxuu)rce of 4.0 m. What is the electric field at a point midway between the two chargexniu*jr utp2);:t4/,un)u swz ji bc2 s?

  A 5.0-mC charge is placed at the 0 cm mark of a meter s zaq: d7 s7mk )4baykdm7qz,v3tick and a -4.0 mC charge is placed at the 50 cm mark. W dv3m7q md7:a7zk,)az4bq ykshat is the electric field at the 30 cm mark?

  A 5.0-mC charge is plackvg, 8xb *jwv9.ltg,ced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at tl*w,,8 kt.cggbvx 9vj he 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 -7.0 mC are placed at x = 0c)blqcu qmlm: *s(my x 05*j(o and x = 0.20 m. What is the magnitude of the electric field at the poiql m:m*c(*0cuy 5 b oljqxm)s(nt midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.4n48jz kr dsxrx9y,x 850 m. The last corner is occk d8n4xzrjr 89xs ,4yxupied 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 a side. bqr ,r5oqlf0+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);0+5 blrf,rq qo -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 iwx-ykotk.nxc v)t f)yt*;f wo4fp( 1,n a uniform electric field. What is the magnitude of thvxo.k1- ytfn,(f);cw4f* x)wy t tpo kis electric field?

  A particle with a charge of 4.88n3rv;0x(cwhea ox+p - xapf0 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 gb uslb( 04h6svfg- pj:+6w qn0.120 g is placed in an electric field of 6000 N/C pointis(ns 4 j6+l wq6fvhgp-ubb 0:gng downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carriew 1s1nu zadz7). d p:i*7hk;q fqendv2s a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnituds* zevh; 1nd :dzk nd71wq7qa2u )fi.pe and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mCr*9z qo *tgy0yvf/em 0. What is the magnitude of th/y90 zqymof g**etr v0e electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wha acw7t9do9z5q e;t( oyt is the electric field 6.0 cm from the center of the sphere?qazyt7c5(o9 d;9e wot