State the law of conservation of elect(:6 6bx uj fx*g5izxcbric charge.

  Is it possible for two negative charges to attrac f6y:v plvhi*oq(hc-4t each other?

  Is it possible for a positive and a negative charge to attract each.1/ mx/bxxy gv other?

  A glass rod is rubbed with a pie:0 fmu0 6qlv91ornrrf ce of silk. During the process the glass rod acquires r u 0v:f9o01mlnrr6q fa positive charge and the silk

  A proton carries a

  The model of the ato+o(upn68 iqm rtbej+.js2em0m shows a

  A neutral atom alwaysy0 )f8v7s(,rz vveavp has

  An atom has more electrons than protoh ,yte:k 6 hrwurc*8d(ns. The atom is

  Materials in which the electrons are bound ve) gkh:zt6a 7bery tightly to the nuclei are referred z )ab7the6gk: to as

  Materials in which the electrons are bound very loospicl 1r 11o9esely to the nuclei and can move aboui1pc l 1o9e1rst freely within the material are referred to as

  A negatively charged rod is brought near one endvajmn6f8pz ic8m 18 v6 of an uncharged metal bar. The end of the metal bar farthest from the c mf888 m61viavjncz6 pharged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutrtdfu4) *yzhphn(f;w65w3vjfr.l bm+ al. They are placed frhufd bhn3y4tz.*m ;(jw+6) w pfv5l near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod czlc3d 7zh/.rhharge an electroscope positively?

  An originally neutral electroscope is briefl bi wd.m63m /v:hj,giry touched with a positively charged glass rod. The electrmb,wh.vim d3/gr 6 :ijoscope

  An originally neutral electroscope is grounded briefly while a positively ci ao5i3- +yxe,qyjq8u ms3i)shargeyes, iiq3 q+3msxu- 5 iya8)ojd glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separahyeay-w8eyp +gi5 u :g/.yfk 4te. Then a negative object is brought near the electrosy /ah5y. ye:we4g-+f yp g8uikcope, but does not touch it. What happens to the leaves?

  A large negatively charged object idexp2pho6p16p0*n -sxl vqgz2ergs2+m d*5is 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 rolls along the path followed by the first ball, strikes the first ball, and s6*p*v ei2 2- 5pxghgp 2 ezsd+m6dlxrnqsp10otops. 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 constant dap(r,z7p mc*$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chak84 4+vz,kj*ii 4h xd5vcest zrge is larger in magniiv ck+ zi x4h vd*4j4e5t8zk,stude than the second charge.

  Sphere A carries a net charge and s.1b i9lz1t eq57k toqnphere B is neutral. They are placed near each other on an insulated table. Which sta1iob5.7z t1n qetlq9 ktement best describes the electrostatic force between them?

  Two charged objects attract2,)y ntsrikd 5 each other with a certain force. If the charges on both objects are doubled with no change in sepy5) dsnr,k2 tiaration, the force between them

  Two charges are separated by a distance d and exert mutual attractl:v/m f-dyfv 8ive forces of F on each other. If the charges are separated by a distance of d/3, whatdy 8lf:m vv/f- are the new mutual forces?

  Two charged objects attract each other with a forckz)w/h)mmv,4 *wa/ ) avt)m jf wbf2pre 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- w m)/ahmzw)kf/ vb)r fmt)aw4 j2*vp,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 t2f s0z+jf xv 0rt:*vboo the magnitude of the force on the proton if a second electrz *f+o0f xvv0:tjs2bron is placed next to the first electron?

  An electron and a proton are separated byi/-y av*x5)pxg jzoo q74s+yhk1,hje a distance of 1.0 m. What happens to the magnitude of the force on tho) ypj s 1+ ix4yx-,a qv5e*7hgh/kzoje first electron if a second electron is placed next to the proton?

  An electron and a proton are separateommz i ;)vv5lptbh4 w6+*w,tod by a distance of 1.0 m. What happens to the size of the force on the protont,ht5v wp)o* lw4;+mv6i mzbo if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is pl xek30ly.n)wi avz .,,7 8am mqosura*aced at 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 wy,., m0soai raamqu) ve*k 8zx3. 7lnacting on the positive charge at the center of the square?

  A point charge of +Q9cz)g mnyul ;7 is placed 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 the force that acts on the center charge due to a third charge of +Q placeugzyc7;n lm)9 d at one of the other vertices?

  Which of the followingrouv2/ g2u 2.rfcq *ku is not a vector?

  At twice the distance from a point charge-fg+w v pv:zvk*;6nkx, the strength of the electric field

  Is it possible to have a zero electric field 0kes0b(ih *go,r k2afvalue between a negative and positive charge along the line joining the two 0bo0 (2s*gfr kak eh,icharges?

  Is it possible to have a zero electric field value between two positive mn 80n:wlo 1rekz7 h 2l8sefo:charges along the nl 21:heewlro8z mfsn 0:7 8koline joining the two charges?

  Electric field lines near ,fut bwu3 j3-x/a 4eejzvag:0/bm o7f(z-wwwpsitive point charges

  The electric field show rx8 txdn:rj/4upd4/tn

  Can electric field lines irpj2-06u e ketntersect in free space?

  A solid block of metal in electrostatic equilibriudu3g 225vkgj+e g5rnrc,5 muq m is placed in a uniform electric field. Give a statement concerning the electric j+guq ug,rkvemc2523d gr 55nfield in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal d/(i qg2s /-+ty2vbqe vwqnyk m;dk7, viameters are each give7yie/vvb d 2 g/2w(t sy, qn-+mqvkk;qn the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifocfx n;vd4 ;h24mz 2elprm electric field is directed straight upward. What can be said concerning the charge on the block's top sh zlf4xn4;2 vp2em;c durface?

  If a conductor is in electrostatic equilibrium near an electric charge3jam+4/hhbvupgl u ,5

  A positive point charge is enclosed in a hollow metallic sphere that is ground zpnhfw-fx 9e)b1m*qipi7 16h a)dnn5ed. As compared to the case1ifa f6b i 5*)7xqwpe-m)phhz9n1n nd without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in statl vs *y6abd3ok0-gj8 cic equilibrium.

State Gauss's law.

  The charge carried by one elecyoept v;f0**b8zx+ wukg/o( ttron 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 thahhdfp 2ux*arb)(ie1m 0qg *u ,n electrons does this piece ofuq2dh) * gb1r(uxf, a*i 0hmep plastic have?

  What is the charge on 1 kg of protonsj 5- y9 (wb +odow5tiwt-qez4s?

  An atomic nucleus has a cuya3w yzkaip/ k5(a5)yv9tq :harge 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 8zeuvt4zmdfr5p2- b 0 values of 2.0 and -4.0 mC, respect2m ez850brv 4dp- uftzively. 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 t)liko8-bl 2a7h mop* zhem is 1.0 N. What is the magnitude o87kpo)i2aohz-bm* ll f the second charge?

  Two 1.0-C charges have a force between them of 1. r.c6dl3nr;7uko 9gzr0 N. How far apart are they?

  The force between a iu.mtdoy g3z*8 e5: ylt5 r60dzr dwh*$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, inf9mnj6m-, hx4fks2 vhitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation o4 -ms9nj6xvfhh2f,km f 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are plac gw;4d;kb xz;xed on the x-axis. The first charge is at thw; gxz 4;dxb;ke origin, 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 charge o 565m 7eaby+ntf j6gbqf +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. What are the magnitude and direction of the electrostatic force which acts on the charge at a5 +6nb6e5jgft7ybqm the origin?

  Three point charges are located at the fovm+ fv s5 bmylx1 vwlz/8/1v2gllowing positions: Q1 = 2.00 mC at x = 1.00myx z/1lvf v8vvwm2b5 sg+l/1 m; Q2 = 3.00 mC at x = 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 cenuch)ak t;ky2/+tobwx qy9y x,g d/m-*ter of a square, and a second point 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 that acts on 2h-,k)/ gtxoc ym*q bwd 9ayt/;+uyx kthe center charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.3002qu6jvkshpp +zmlw)h 34y p4 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5k4pup qyl0hwjs) 6m43h +zp2 v.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0,p msex hax6e:wlu0)p/m1e96ta 6a ,me 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net fomp a)etms6ml a:1pe 6aeh 096x euxw/,rce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an ebc, mj rg9m jqo22,(piquilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts ojg 9(o2p2cjim ,rm b,qn any one of the charges?

  Consider point charges of +Q and +4Q, which are seadp9r x8s04cq c (s xt(ylwb54parated by 3.0 m. At what point, on a line between(ac9t 4ly(q pbd48xw5s xr0sc the two charges, would it be possible 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-y7/gu.o f jlx/C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the netjl7 f.yxu/ go/ force on it is zero?

  Charge +2q is placed/p-c*fe 5f+f xrk:c (4llsu pu at the origin and charge -q is placed at x = 2a. Where can a(lpf 4r e*x:u+5/fcscuplk-f third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g.1x)a ) kwl2wk7;quv-jv-wk j e 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 m yeye1ekxekt,-o;p5 b 015 *spaxfo5 of a fixed proton some distance above it. How far above the electron iex5k-;e 5ayt,p 50ebokse*1mfyo p1x s the proton?

  Two 0.20-g metal spheres are hung from a common point by nonco:: 2 ey y9f74trdkiiwonducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces thd2trf4yo :yk9:w iie 7em 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 magnituqyv(:* pfr3h nde of the electric field at a distance of(qyrh nv*f: p3 1.0 m from the nucleus?

  What are the magnitude and direction of the 7944 zft hqthe)gjg* felectric field at a distance of 1.50 m fro* g9g qth47j)ff4h tezm a 50.0-nC charge?

  A 5.0-C charge is 10 m from a szk(jnh a) a)ke9q ;e6 pmmtyq:28*1j 6dleeuwmall test charge. What is the magnitude of the electrit wp zu9m)ahe;6*8jkn q e:ke( qely)16dma2jc field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the e6sm-vd4 oc6gqnty13x0o 9s0pgg 3hzigd-6o3 pgsx i9tv6oh0qn m 4gcsz3 y01lectric field?

  A 5.0-C charge is 10 m from a small test charge. What i5k8;bbm4k2 z1x 4*quemftmbc s the magnitude of the force experience bce*xmzmqt2u;1b4 m 84k5f bkd by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each hwi dye+r*lq;-ave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point mirq;wd-l e+*yidway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sig(,2 fxgfgr /j1av tgb87m+ wtick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fieldtx(7 mb gj r w+gf/2v1ig8,gaf at the 30 cm mark?

  A 5.0-mC charge is placed ; e mysab9++an+nh 1ddi*ocl+0 el,p qat 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 the electric field z9p +; lm0 eq +ocdiea*lhab+s1,ynnd+ero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = .ipei d42ciec/.krrsq )h- -nfsr7:x 0.20 m. What is ksx .ihre4qdr- is2n ) e/cc7i.pf:-rthe magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges+uy / mbge,k y:jhi8h j2k.6kn are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge.j 8.umg+ hj eyi,y:bk 2n6kh/k Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed ;qe5yn sb;jk( 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). ye;;jkn(5bq sWhat 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 ir*akma ov4-o(e a8 ed1eil/m 5kes8w2 t is placed in a uniform electric field. What is the magnmrokk eadslv 5m2(oa188e ia*e/w-e4itude of this electric field?

  A particle with a charge fu* 8a 9c(e02rofiplu o/ at)5 ixk7cxof 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 fx/. zy;ci o6)f.yttfplaced in an electric field of 6000 N/C pointing downward. What charge must be placed on thf yct) /6o..ff; iztxye ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -czb7. izv usj 6x40yi-2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force ixyu7.04szi -zbcj6v of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the ma5) xj hhbtqni;r0 75wbgnitude of the electric field 5.0 cm from the sphere's surface5 7n;wrt0qbj )bih 5xh?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 /kon,pyu:b9z5-l9r a ,*bde zwbb9h ymC. What is the electric field 6.0 cm from the ob5bb9 9e ,uyz wbdhprky,z lna-* /9:center of the sphere?