State the law of conservation of pn;za*pck*r 8 electric charge.

  Is it possible for two negative charges to attract each otherprs(y.sr 8 umu;f ww41?

  Is it possible for a positive and a negative charge to zu,a5vtcu*,) tr hxxlz x3(7kattract each other?

  A glass rod is rubbed with a piece of silk. During the process the glt2m bwg: e;8 n5,vov8femtp5 wass rod acquires a positive charge and thne t 8mo,f: ewvpb5t28mgw5v;e silk

  A proton carries a

  The model of the atopbs bxuh a5m 6/7:j5)md: mpzg p8;lpcm shows a

  A neutral atom always has25dymu+v/6bum-0kt bf zh.lw

  An atom has more electrons than protons. Tdz7 , ag4rtuw2he atom is

  Materials in which the electrons are bound very tightly to the nuclm5 ps x8t68uf nf,yj,hei are referred to6mj5fsnfp88, xh uty, as

  Materials in which the electrons are bound very loosely to the nuclei and nt-:vw3a v+qgi0qtil/8etb j 0f+mx*can move about freely within the material are fal i gt m/eqwxt +0vivqj8t+ *n3-b0:referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar.-sax187l09jb sn eypcmkl/d 6 The end of the meajkylm 0s 6s/pcxb81d-n7l9etal bar farthest from the charged rod will be charged

  Sphere A carries a net positivy ,e r qb/b.nn62dlqd+e charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is corq62 edbnnr q+y,lb/ d.rect?

  How can a negatively charged rod charge an electrosc7ckgal.9 e 3aovbu 4d.ope positively?

  An originally neutral electr2)xfgep wc d.(.qpx9i*yzj5-( custf oscope is briefly touched with a positively charged glass rod. The electrosc)5*p i e(z9xp .dwctyfgc sfu -.x2(qjope

  An originally neutral electroscope is grounded briefly while a positively chargkhb4;qq s )h;7*m pfjded glass rod is held near it. After the glass rod is removh*j pdk;s7q )fbh q;4med, the electroscope

  A positive object touches a neutral electroscope, and the lec: .op *b-tj us,zx8uraves separate. Then a negative object is brought near the electroscope, butu cj.xuz, s8*pr-:o tb does not touch it. What happens to the leaves?

  A large negatively chargedhcx)+ei hrnk 59s9k urq4 un24 object 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 rolls along the path followed by the first ball, strikes the first ball, and stops. The 9hk+)52iuec4xs9rn h r uk4nqfirst 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 8kzq:753 rz8epwrape the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Tpdawur drt ny-ai, fj)) :.j wd8/8g78+cijcmhe first charge is larger in magnitude than t8idy /8t8w )f+n )ag rp-m7cj. jdj:,rdu waiche second charge.

  Sphere A carries a net char8 6,uf5gsypo5wmfxd/nc vs/u2 yh,)h ge and sphere B is neutral. They are placed near each other on a c p2ho)n5s,/xw8vfy5u6hsdgm /yf,un insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges .a* oa7ayeiq*g ks(:k on both objects are doubled with no chig:*ys( 7kke .oaaqa*ange in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive f)ttey r.j/tc :orces of F on each /r). t :tejytcother. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects 8s9 b+djoj7k6tui klln9, egof9-g; 4 f2kipoattract 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 their centers7o fjfeb6 4gp,j+d2iu-9tl; inloo 8gk99ks k is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separatedd )w 0h6 rj)bo9b0afnk by a distance of 1.0 m. What happens to )awh f 006 jkdbo9rbn)the magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1 .rt2u clbr /:+tgb2yo.0 m. What happens to the magnitude of the force on the first electron if a second electron is rrbog c:/+2 tlbu2yt. placed next to the proton?

  An electron and a proton are separated by a distanck4i5 8r3ydptp/u hpmxp ;dlbo957c0q e of 1.0 m. What happens to the siz o qd8kpu3pp5himxc9;bp7 4r/ 0dty5le of the force on the proton if the 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 point 6ud1/h p:.kbawo kgd0charge 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 01hkuwo.k 6/:da d gbpcharges 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 eqoxcns7f n *:.kme(4epuilateral 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 4*mce kx:np7 ne.fo (sforce 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 w8dtgve 41 jb.1r :t k)yjaoy4a vector?

  At twice the distance from a poxr :8qbz,zq 07q0b;7d dmrbh bint charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and posin ii;.s e4hl6ltive charge along the line joining the6.;4 lnhlse ii two charges?

  Is it possible to have az-8red o 1kpr( zero electric field value between two positive charges along the line joining the two chrpko (-erz1d8arges?

  Electric field lines near psitive poimoe3va2jz+ ett 23 /dknt charges

  The electric field ssw4 5xaoda1 e/hown

  Can electric field lines j8hzhf5+lx 9tintersect in free space?

  A solid block of metal in electrostatic equilibrium is pla6393 lnlq*)q w7k n z1zdoaqtzced in a uniform electric field. Give a statement concerning the electric fien1wq dk37 l93* 6qaqtn)zl zzold in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamegk5u2jsc,4dv):y upflm lp //3wup7 eters are each given the same charge, the electric field (Ejpuf4 g dvcus/lm ly5 )p,u/p3w :e7k2) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a ulv3q0g6f(e n region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surface?nf g v36q0ue(l

  If a conductor is in electrostatic equilibrium7,x-4j w 27ntp htvhfs;;yfir/e 4fna near an electric charge

  A positive point charge is ena;mr 5 rlp(*tfclosed 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 sphere h rl;p mtfr*a5(as

State three properties of conductors in static equilibriumut x9na(ejr(3g+9 rr y.

State Gauss's law.

  The charge carried by one electro4rdbcsn3y wk-8n z3: pn 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 ofw cd l/o85pq2ye t8i.j +2.00 mC. How many more protons than electrons does this piece of plastic ha88w jl/5i.o qp 2ydetcve?

  What is the charge on 1 kg of pro)rilyq,cpo0 f8wkxsh,:w zdo 6767 zytons?

  An atomic nucleus has a charg 38a(n;6irxowa -arty e 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 -4.1jnhq 3 o2qq(c6g,dp l0 mC, respectively. What is the m,lq31q ghj 26( pqondcagnitude of the electric force between them?

  A 1.0-C charge is 15 m from a sgx8:np aqkwa7.j.jfn otz4 + :econd charge, and the force between them is 1.0 N. What is the magnitude ox4no at 8+.nz:wp kj.7qa:fgjf the second charge?

  Two 1.0-C charges have a force bete 1ajr6j* cd-aa;,jafp l:q:sween them of 1.0 N. How far apart are they?

  The force between a v5 wi7tjyw/*1,fked s$30 \; mC$ 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-N force. If they a/4-axcay;pky re moved to a new separation of 8.0 cm, what ic-/ yykp;x4aa s the electric force between them?

  Three identical point charges of 2.0 mC are placed onbc9pyc7d: 8aa:,xov7u e lhv+ 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 magnitude and direction of the electrpyu:,v9 +b dh c7a8vcox7e: laostatic force which acts on the charge at the origin?

  Three point charges are placed on gw* ak8cr:jv8h 7k+b ox4xa1e-9e i hxthe 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. What are the magnitki7akaxg*xe e9j81w8+ 4o -hvbx hr:c ude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positea0mk8 /9, firfx zv5aions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 me/ f8 i0 mak5zfxvr,a9. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed l h28jerg d(jb22yik 7at the center 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 thatd(227 hjib28e gr lkyj 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 =ed9bv 6ugie)dxr5 * 9j -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 5.0 nC c9u r5* vdxi9dej)6ebg harge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 otinv q s(nqc32g85reh.,*zunC is at (0, 0). What is tg(ro nc8ht3i.* 5euqn2 zq ,vshe direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC arenssp9/)g d;1vxbp* d- (rgovc placed at the vertices 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 charvsrp;x9/-sn g)1d vdbp( c* ogges?

  Consider point charges of +Q and +4Q, which are separated,o)iive4l6 qfq3 p3lq 3)mdvjlbrua;3uh b07 by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -u;q fhqe 4m a) ,3iolv b prj3ib0u3vq)l7l6d3Q 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 xvgounfc5f ta1 n6h:7ij7i2(x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on ii ftx nj7c2o(i a67vg1 5fn:uht is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. u:dk6hw y e,m*xnu cp9gn lv)/m9 8q,q Where can a third positive charge +q be placed so that the forceugm /yxce6)km,9,qd*q ln:8up9vn h w on it is zero?

  A copper penny has a mass of 3.0 g. A total os. ,+cz: f 4rw8ckrin) ga;x fbz8xic;f $4.0 \times 10^{12} \; electrons$ 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 fixedx7o) ebhl ;lik.239:qh t uwbw proton some distance abovkq; wleh )wh39obtl bi.2ux:7 e it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads bp.rg,bf/2 ; 8uwqqdro+ g(syxqaz5*which are 30 cm long. Both are given identical charges, and the electrosta,(2bzspgb8o.5*f/+qqwqxadu;gy r rtic 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 cj v8h2zeam n59harge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the ne9jz v582mhanucleus?

  What are the magnitu2yyz0-ws+q pjr47x owde and direction of the electric field at a distance of 1.50 m from a 50.0-nC pzo yxw-7ry24j0 + wqscharge?

  A 5.0-C charge is 10 m from a small ted+v(. z q zyot:q xd5.e;3nwvhst charge. What is the magnitude of the electric field at the location of the tes x5de. ;t:dwvzz( o3.y+qn qvht charge?

  A 5.0-C charge is 10 fk*9kq pivlmls r(912 m from a small test charge. What is the direction of the electricmk* lqfkslrp9(91iv2 field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitq z0k* unq5ii 6qf1;r+igig(lude of the force ex q01fun* ii ;i5qlrgi qz+g(k6perienced 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;sth-u7 s r:0qx hv6mb a distance of 4.0 m. What is the electric fiel ;h st06qurshmxbv7-:d at a point midway between the two charges?

  A 5.0-mC charge is plcwy8l1r68 , rwbjrgk (aced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. b jwcr8gw,8lyr( r1k6What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a (/;tt(wu-tpee vm:i q -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electr(;-uveqtit/(t wp e: mic field zero?

  Two point charges of +ehdy6yh h 1- w.9hhc+w3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric h hy. eh-+16ydhwcwh 9field at the point midway between them?

  Three 3.0 mC charges are at the three corners oq pdkg:fu fn/x8rm)+2f a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of th8)rgpn+u: d2mx k/fqfe square.

  Consider a square which is 1.0 m on a side. Charges are placed frhg,hunw :,, 8yz;asat 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 elect:z u,h nf,ya8g;s rh,wric field at the square's center?

  A force of 10 N actsfz wex-(f7 wsprtakk-//g/6m on a charge of 5.0 mC when it is placed in a uniform electric fiel g/f w7r m-fs/za- 6w(ekxt/kpd. What is the magnitude of this electric field?

  A particle with a charge of 4.i4u;a8wf/j* h v2mh2p 2fcp.h vst 2nd0 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 electricvba4, n3z y0pa field of 6000 N/C pointing dow0p ,zva34nay bnward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 y)3,opo7km0 p*su nzjg carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspep p)ojo0yz k um*s37,nnded against the force 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 m;xrbf)f6py7dr;+ . njq;l o hxC. What is the magnitude of the electric field 5.0 cm from the sphere's surfac ;x; 6hqy7;xp +b)drfnjlor.f e?

  A metal sphere of radius 2.0 cm carries a charge2x2s;c+xvvpx of 3.0 mC. What is the electric field 6.0 cm from the center of the spherevxsc2p2 x;+vx ?