State the law of conservation of3tru)7mk,v g3 mn um/6j.3uz hm5gyqi electric charge.

  Is it possible for two neg9 ,klgczpg 0v7+t*a alative charges to attract each other?

  Is it possible for azzevjoqb. ;ig:c( c 62 positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glasa; rhgaao9hqm); d;3mrg 3bm3s rod acquires a positive charge and the silkoda9;agmm rg3a ;)3 ;hmqr3bh

  A proton carries a

  The model of the atom shows w5x1onafl 5g:jfqw+ 2a

  A neutral atom alwaysadg zo5/5-* qqq.jhrol :ae6t has

  An atom has more electrons than prot*-6ylmk(ajg5a ( kqgex3 ss1ions. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are /5hkk yde,y *mreferre ym5,h*y/ekk dd to as

  Materials in which the electrons are bound very loosely to the nuclefhs1l4rqe0 xx2 z72h 29ckknti and can move about freely within the material 0941kqhxh7 2nx kte2rfz sc l2are referred to as

  A negatively charged rod is brought near one end of an u/1wv-ge,t00vro avbuvg 4( qn ncharged metal bar. The end of the metal bar farthest 4ve,qvganv o0b(0r- /tvugw1 from the charged rod will be charged

  Sphere A carries a net positive chargee)xyo 5c1ml 3j2 o9jqt, and sphere B is neutral. They are placed near each other on an insulatedejl )x53ytq9om1 cj2o table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positively ns*o,myb/5rhsw4z mfyl4y2 . .qs9 ih?

  An originally neutral dy)ue1i 64pgdelectroscope is briefly touched with a positively charged glass r 1edu64yd pi)god. The electroscope

  An originally neutral electroskstxp*.t,kpi. 4wju 9cope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electroscope4k px,.puk.i* jstw9t

  A positive object touches a neutral electros6d ke-n v.. mljg)jlt,cope, and the leaves separate. Then a negan.mvjge6 ,lljk-dt).tive 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 neutral 3w;-bss*-qj( 1nb dwjt sc.dwmetallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path follo w.c- -;b(tdnsjs 3wqw1bsdj *wed 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 Co6nmcuo d0c( w.ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger m.al psz,4twzu73iyauv m- 3 4in magnitude than the se 73,-upmauzi4. v 43yt wzlsamcond charge.

  Sphere A carries a net charge and sphere B is neutral. They are pllrpbjhdg n2.2pp;c,v, jl93x5 y1e xoaced near each other on an insulated table. Which statement best describy , 1hex,coj9 d2r2gnb.l5pxlppv j3;es the electrostatic force between them?

  Two charged objects attract each other withmla4 s(u9auei:+ww4x2 xz9lz a certain force. If the charges on both objects are doubled with no change in separation, the force between t w2e94zslzx+ :aix( aw4mu9 ulhem

  Two charges are separated by a distance d and exert mutual attractr lv gban0:1cd vv+m2+ive forces of F on each other. If the charges are separated by a distance of 10 gd r mv+l:2+vvacnbd/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. e7qe6micwk: 7(.kai8pzef d/ 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 f eemceik8kz.7w i:(d6/7 qa fporce is now equal to

  An electron and a proton are separav/h :v4 q:gzejted by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electrovg/::e4v qz jhn?

  An electron and a proton are)sz:.jg hjk8v separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next tohz g8 :.sjkj)v the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens to v:2v nxj1a4:cjh+fx.ol +fe 8hq-ws bthe size of the force on the proton if the electro82bc+e.ho1vxqlj f:4j nx-+a : shfvwn is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a sqhk4n0epyepb- 7. tp :muare. When a second point charge of -Q is placed at one of the square's co:7k-bme tp0 hpep y.n4rners, 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 ant-mgmhn/( 0ab 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 the force thab( h0m/na- tmgt acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following i47kg w udc3:dps not a vector?

  At twice the distance f j4a)fl2 gwcq8rom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative 8(gd3md8 mt((*g qpr wf9tg tband positivbtm 8qg(9tw3f*drdgmt g 8((pe charge along the line joining the two charges?

  Is it possible to have a zero electric field4-) s,7nli;y2coua u +wgfuur value between two positive charges along the line joining t)c4g- f2i; au7+nys ruowulu,he two charges?

  Electric field lines near psitive point chaa( k :(o2qu0wl/uxd77 sarr hwrges

  The electric field shown 9txfdp3 4 7rtq

  Can electric field lblni7vu lh5eg4.r24s)x x sl5ines intersect in free space?

  A solid block of metal in electrostatic equilibrium i t9 4j/qxusz;j (7mvsys placed in a uniform electric field. Give a statemeumq;x(7sjty/sz j4v9 nt concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eachcop f8 ikx/++i pa g7+hogo(7x*bn:wr given the same charge, the electric field (E) midway between the center and the wr8bkg(+cii xp+n hfx+/:7 *gpoa 7oo surface is

  A cubic block of aluminum rests on -nd3 2bprwg)m w:khpr) c-*fo a wooden table in a region where a uniform electrifdpcrg-hnmwo)k)* 3 p 2w-r: bc field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charg1uo/l assl:0y e

  A positive point charge is enclosed in a hollow metafl)lf)ds0fi6f k . /y+p)o dmgllic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the+k ly6ffd.)i)dg 0o flfpm )s/ hollow sphere has

State three properties of conductors in static 0)ux hha0q31 n. ntsupt,a3rpequilibrium.

State Gauss's law.

  The charge carried by one electron a/66t07yfj rft qkbq6h z:;y vis $e = -1.6 \times 10^{-19} \; C$. 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;w szzfcq)j2+o0o. da 0 mC. How many more protons than electrdqz );+sowz2c0 fa.oj ons does this piece of plastic have?

  What is the charge on 1 kg of protons088xmyiuq b7y rgzy/3 ?

  An atomic nucleus has a aj ;k,kld tr13+ bke.m b1gqb1charge 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 oftj):-zao;7:s xrspu f 2.0 and -4.0 mC, resp apjr o::szfut-7);s xectively. 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 )u o/gjpr3((iy1d nit otx- 4y1.0 N. What is the magnitude of the sec4o (pxni-t t1o3u/id rjgy)y(ond charge?

  Two 1.0-C charges have a force between them of 1.0)2x-zlmaml j9it s, w0 N. How far apart are they?

  The force between a ew/2t0w 1c ula:g7zlh $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiall/v ;)q/x z zql)kh056aecmrkpy 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between them)/xa)qqc 5e6/h z0k rlvm;k zp?

  Three identical point charges of 2.0 mqvq,l95.r.yenpqe i8p ai0 3g:5deheC 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 ,e.p3iq:a5.pg q v eeihenr8ld059qymagnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on+7t vsso, ub . /sgwfc/**fcvy0 kwa2g 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. *.ta vc/fy fu/bgskwg7+o,wv 2cs*0s 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 positioyq dd,mhl c++bw 8)oesaj; r4-4ex b3ens: 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 tle+q)dyw3cm8,;4ah j +er boxbs e4 d-he 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 point chxhm;pd kz di;::dwt: jy: s38varge 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 chargkmd:;vz yw3 tdd ;p8:x i::jhse 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, 0.10 m); Q3 = 5.0 nC is .;l8maje)hj aige* .aat (0,8; aa)*iagj lhmej e.. 0). What 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, 0.11ap*t dz qwi ;ymq ae73i.,uj30 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force uyqe wa71dq ;a,z3 mt 3iij.*pon the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an eqx .wh hfmkg,oo;.my m0gz-t23uilateral triangle which measures 30 cm on a side. What is the magnitudhz;xkg. tmfo .2,w0ym3 -o hgme of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated 1;yw i q*j dky;mu8+huby 3.0 m. At what point, on a line between the two charges, would it be possible to place ak qy8;;yuijd1mwh u+* 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 +:vk /y9ksfqpozr.k561lvkm -C charge is at x = 4.0 m. Where on the x-axis can a third charge be placekk o91ykkfp/s6z 5 lqmrv:.+vd so the net force on it is zero?

  Charge +2q is placed at the origin and ch nlz7b pv)/ rxx2pqd)/o.b5hzarge -q is placed at x = 2a. Where can a third positive charge +q be placed so v. 5ozrznb/qxpl 7)2 p hxd)b/that the force on it is zero?

  A copper penny has a mass ofbbpv k i. ,kyx 1hg-gl:95/zet 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 force of gravity d+ol7 hb 1etc)y6g+lm z6*qlgyo4jv: by the attraction of a fixed proton some distance above it. How far above the electron is o 1*l tegh vj:yod l7y++qm6 6b)zcg4lthe proton?

  Two 0.20-g metal spheres are hung from a common point by t,6t,z9qw 6 mrri j1iydqty b3g4j-5 dnonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads is irtqijt wg9 ,rjbz 56dqdy,ym4t13 6- $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude (:tc fo6+hoc .wy rs.iof the electric field at a distance ofs of(.owc:h.rt+iyc6 1.0 m from the nucleus?

  What are the magnitude and direction of ws9qa m zka1h(g n5p7* 6ct*apthe electric field at a distance of 1.50 m from a 50. pph7 *gazq 9tw51 ca6*mnska(0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o-e)lq m hv -5u3cojyc3f the electrih)35ju3cvc-my oleq- c field at the location of the test charge?

  A 5.0-C charge is 10 m from a small e*apl;;e lx9 gyc8 wk:test charge. What is the direction of the electr;;p:8lkw 9 gee*lyacx ic field?

  A 5.0-C charge is 10j /r8 s9l1rr3 cnlx,qr m from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the l8srr/13ljxcnr 9,qrtest charge?

  Two point charges each have ay.lhyujx:8 g9lu 4m2o value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at: xujy 9ulo.84gml2hy a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chargez/5m/ (vopjj*z mlak ( is placed jz /o( 5l *zvmp(k/jamat the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is pl uy zk/-stf0i5gkd2(xaced 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 two charges is txsu 0k-y/kg 25fizd(the electric field zero?

  Two point charges of +3.0 mC a;,u:goo t(zwzd f/b a9nd -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the elez;t(,odbau/fg z w:9octric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 +/h hyz(qmyli*ew ,-gm. The last corner hg zm*-wh(q,i l/y ey+is occupied 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. Charges are66j4- r.dspake3p/tk ag8 trp 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 agp /pr8p4 kjstr63a.t e-6kdelectric field at the square's center?

  A force of 10 N acts on a charge * :3 l a.qpypb.v o9ijtxc69yhof 5.0 mC when it is placed in a uniform electric field. What is the magnit:.hq*ypxc9la3b o.p69ivyjtude of this electric field?

  A particle with a charge ofqh53g18 qp;kes rolp4 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 g is placed in an electric field h :3tmf .ozl)nof 6000 N/C pointing downward. What chargo3n)zthmfl. : e 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 idtb7sdwi9p kbh p;+e7-*:auy nside a uniform electric field, and is suspended against the force of gravity. What are the dh s*7ep9+7iudtpbywa : ;-kbmagnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the ma ue.ip1, 5t*qzhwdq )rr0poi /gnitude of the electric field 5.0 ,ri*uip)p /z wqr0h1otq .de5cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wgqshw7uc z,ao9l3bi45-1rr that is the electric field 6.0 cm from the center of t7isqh4o l, wr1zur g3cb-ta9 5he sphere?