State the law of conservatio; /n ;, 8oiubaoiwxqa(n of electric charge.

  Is it possible for two negativ unvmhxk0 /64szl7ltcl+ voa9n+ z31de charges to attract each other?

  Is it possible for a positive and a negative charge to attract each oth 471+q;(dmozu 3d0 y aqwqu4qzh lu,qmer?

  A glass rod is rubbed with a piece of silk. During the proc)sy8b5;2x:vb2krr 8fgzo hn cess the glass rod acquirvgo2 82h:cs rfx8n ;k z5yb)rbes a positive charge and the silk

  A proton carries a

  The model of the atom shj5q2ys4vzyl mf ;vq 2; jh3l(lows a

  A neutral atom always p+egrbm0 v3y0has

  An atom has more electrons than prota*yvz3c ;+hh d2 x(vxhons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refertk *mwl9xd v1dr3 :c,wredcwv*w9k tdl3x: r,md1 to as

  Materials in which the electrons are bound very loosely to the nuclei and camydp4/+ bs:pvn move ap/sb 4+ymv:pd bout freely within the material are referred to as

  A negatively charged rod is brought near one end of anjpoofajaa7br,hl n j4g 6(n3aw0 u)+ 3 uncharged metal bar. The eug (law)7fa,ja4 a0 b +n6oho33pjrj nnd 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 ac+iv;zj0h . zire placed near each other on an insulated table. Sphere B is briefly t v;c0hi jz.+ziouched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an q/,lee:: u egh39z rceelectroscope positively?

  An originally neutral electroscope is briefly touched rt;zupevfvj56bl,(;-if hu3 with a positively charged glasszvefh(p-ur ;if3 56 v l,b;ujt rod. The electroscope

  An originally neutral electroscope is grounded br 0 77v r/aa *bto:ex8mbpda,xpiefly while a positively charged glass rod is held nebear0:d m*a,x/axt7o p v87bpar it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, d3rtq)+ (di9 rzpby3n and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens t(r3rbd p 9i)qdt n+y3zo the leaves?

  A large negatively charged object is pla*oi mpyd5e0 (ryxx6o2ced on an insulated table. A neutral metallic ball rolls straight toward the ob5y*p0 i( roxedmo yx62ject, 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 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 of7qkbw wvdl*,b9f9ygu h1i.:my9 qbs 2 the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The frcvo. *u;*( fr n8)mqacnf+p zirst charge is larger in magnitude thanpvnrf*f+am;u* q(.cc 8zor )n the second charge.

  Sphere A carries a net charge and sphere B is neutral. zvoj qpk5li81gr;e 5/They are placed near each other on an insulated table. Which statement best describes the electrostatic f1zql5jei8;k /ovpg 5 rorce between them?

  Two charged objects attract each other ww-:p7m j/ykxe;ln j .rith a certain force. If the charges on both objects are doubled with no chanp 7x w-j:rekyl/.j;mnge in separation, the force between them

  Two charges are separated by a distance d and exert mutual attrac1u;gmbwoew6,;jd e l6tive forces of F on each other. If the charges are separated by a distance of d/3, what are the n;6e; u ,jmww1oldbg 6eew mutual forces?

  Two charged objects attract each other with a force F. Wh:srk9 l v 4t(e)4gwqvvat happens to the force between them if one chargs vtlvwg4req 4):v9(k e 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; ji:smdqw(8 y3 qs5zz by a distance of 1.0 m. What happens to the magnitude of the fo5;j( dy w 3zz:ms8qsiqrce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a di2k* iuhhqmn 55stance of 1.0 m. What happens to the magnitu *5hhkim5 qu2nde of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton ara ,lrb3qz4k 1te separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electq4kzb,3a rt1 lron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squgpbkea/ 0s ipu0y1*2q: .xrgg are. 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. gi1q: /pgek2a0bg* .rpy s xu0 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 is8 qrsq+a /ac5z 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 pl/acz8+5 qq sraaced at one of the other vertices?

  Which of the following is not a vecto/sn*ztjkg*g 1/d)ic6al yvc * xzq.9dr?

  At twice the distance fros,e)bur ,j za:m a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative a tq3 isd/ g;ws)lytz+9l2-udqfg,7gsnd positive chifzudq7 qtg2 y9gg/w ld)+ t,sss- 3l;arge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positive charges ga4yk+wymq, kmo ql;*i 343ovalong the line j o wa3,kq4*i3ymmq+lkv4gyo;oining the two charges?

  Electric field lines near psitive point chargejb68r mjob36z , bb.qyij j;r4s

  The electric field shown+ yuc5 qe;r9dran(f4 u

  Can electric field lines intersect in free s6uk.,wetjzhxl 4 ,9oas x6/llpace?

  A solid block of metal ingy-wyjw6q fwm,ayu *.6v3w 0n electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning thm*60ny ugw-a6yw, wjqy3.wf v e electric field in the block's interior.

  If a solid metal sphere and a hollobt a4jfolqvz ;9 7mrq-7ylj8-w metal sphere of equal diameters are each given the same charge, the electric field (E) midwamq-jrb y87fl79 ql-tj;z av4 oy between the center and the surface is

  A cubic block of aluminum rests on a wooden table 35f ripbjd c,; m*vx 9r-k5l5ngonka :in a region where a uniform electric field is directed straight upward.;r5-j3*5d,nl :vn kr acf kgxm9pbo5 i What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an eq+ iqxs7gbpvb, b)/6zb hm+8 clectric charge

  A positive point charge iim 3/7bqx-hsp r6r -v ,v4dmdus enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly s4b-/ -76 upm, ivhmqv3rdxrdabove the hollow sphere has

State three properties of conductoyc dznc 5si67xew y3,3rs in static equilibrium.

State Gauss's law.

  The charge carried by one elz0kdluw*l 9fgku,2/e 9q7jf 3s9lrk5x 2hlzz ectron 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 pro (.p w1m jqqd0ukb*s)ntons than electrons does this piece of plastic hjskqqu.(nb*1d w)0p m ave?

  What is the charge on 1 kg of1b ( sz.wss6xo protons?

  An atomic nucleus has a chaivs5t q 5b11tbrge 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 -mces b36 1wsa4nzg,k) 4.0 mC, respectively. What is th)bkcz1m w,e nssa64 g3e magnitude of the electric force between them?

  A 1.0-C charge is 15 m fteyt4 - 6aa+zt b4-0p rkyu-(x45n nr3rlphfl rom a second charge, and the force between them is 1.0 N. What is the mrn-4n5ap r 0t ael-6p+ (kthtlu4zry43fy -xbagnitude of the second charge?

  Two 1.0-C charges have a force between 5xvxft o,d/h.e1ww5b them of 1.0 N. How far apart are they?

  The force between a dnpanqa. 0h+*kl .q2/txbpq 3c ,6btr$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencq.2pj5no 2cb xkon1h ,o2lyj7e a 1.0-N force. If they are moved to a new separation of 8nplhb52yjk1 ooqo 2n72x,.jc.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are /5a bit+rnq; ron2+ey placed on the x-axis. The first chargennaqr+/b5r2e+o ;ti y 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 electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. sx r;j fbd t07:v)j;el A charge of +2.0 mC is placed at the origij ed; jtbr7xvfsl:);0n, -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 ocxx 1(p8xwl( located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 1wo(8c (p xxlx0; 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 pav s/(,2kuw )7iqx ha:fle6 zllaced at the center of a square, and a second point charge of -Q is placed at the uppew2skahqi,/:) 6(l aufxzv7 ler-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 charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0);(vumt f t(.ihts1,7 -wps .xdz 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 w1pvs ztx.(.mu- t(d 7s,tfih 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 m); Q3 =l r.l5r ds-t zq2v8vn3vhi /2lzny0h9 5.0 nC is at (0, 0). What is the direction of the net force on the 5.vlzq9 ld-2 0v in /tvl 2rzhrn5.ys3h80 nC charge?

  Three identical charges of 3.0 mC are plknq.3b0*bt-kb*j entaced 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 onb*-t3be .*nj0b kk qtne of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what pg(be;pq(7e12 tvqjt co uro 38oint, on a ljt 1;(rotgqebv7qeco 3 u2(p8ine between 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-C charge i 96vq /ay8dts2y7o 0cnvu wtuf3h*jl0 s at x = 4.0 m. Where on the x-axis can a third charge be placed 0 nf*lh 2y836quvwucys/d 9 vtjt7o0a so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed atr*io 5e:qngx. x eskr9.y10ey x = 2a. Where can a third positive chaxn*gk5qe.:yis rxe 190eroy.rge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total8u mgqd;d(;*k b 05dfecrjfy nsc0r(gn2*rd ) 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 gravit3gpp(t )x rsw i)dd5,vy by the attraction of a fixed pr) tr)ppx( i d5s,vwdg3oton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commonuhvtlr) su8fj 5m- jka)(v 6w1 point by nonconducting threads which are 30 cm long. Both are given ident8m(jlu )fjv5wh)-a sktru16vical 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. What7qos28j;n+i*j/-fut 68mhxy6hf n qe zf b6kb is the magnitude of the electric field at b efx68 *fhnjqfm2n khtzy 7osib6-+u/q; 68ja distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of+xv kj6+ 8nkps+ ego5p 1.50 m from a 50jgxp6nv+5s+ ke8 po+k .0-nC charge?

  A 5.0-C charge is 10 m from a smrcz2-q58 a li;:vmu dsall test charge. What is the magnitude of the electric field at the8da 5-2 ;rs:viqmlcuz location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is t9 ,6bk5j5zze r9hgdpf he direction of the electric 5 9dkf9,z56grhepzbjfield?

  A 5.0-C charge is 10 m from a small test charge. What is q pu) ahsf51swv sm ut*nd**)*6h85ovm etz1othe magnitude of the force experienced by a 1.0 nC charge placed at the location oa5*tse*v* 8hm p)q )1mofvhnou6w 51dsz*s tuf the test charge?

  Two point charges each have a value of 3w3u x49p(f bu+)pu qxp.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two cx(u)+ fqup3 bxp4puw9 harges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a 8mg,guuou(o4jv) j7w -4.0 mC charge is placed at the 50 cm mark. What isoju w )g8g4ovju,(u7m 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 -4.0 mC chargcdh m/kbbc*)b/1 mu-vu b33zae is placed at the 50 cm mark. At what point on a lm)bb 1*v-c a33d/u/h cmkbbuz ine joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 tydc810en5f/lqvc p-p sdoub77(nm4 m. What is the magnitude of the electric field at the poinnqtufmbo7 0cv yn/-ddc7 l(s 851pe4pt midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 v1ch (sd pfc2;m. The last corner is occupied by a -3.0 mC charge. Find the elv cp;(2f dhs1cectric field at the center of the square.

  Consider a square wh*6 kmzh pc:tad)5 d 7o,tv4/ix g*sgoyich is 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 eley)ox,sopg c47/gt dvk:* *z 5md6at ihctric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when/b//lcv*za u*i mz pt5 it is placed in a uniform electric field. What is the magnitude of thit* /5 zal/pzmvu*bc i/s electric field?

  A particle with a chargwg+)vn ujj01 p: )w(vgdjeh u1e 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 z v9u6ln9r il r4eqnl*fdz1++0.120 g is placed in an electric field of 6000 N/C pointing downwl9z +in6f 9ql4r*uv ed rl1zn+ard. What charge 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(z*k(fe9td7lb7) bqn(f 6ggss9uc tq is placed inside a uniform efcdltbb7 n(*ez76g9s()uqk g(tq 9s f lectric field, and is suspended 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 wcnw3mb;(dj 9 .6nuaza4qmhe1m +*k c+2.0 mC. What is the magnitude of thewk(m. nue463 mwbch qncad9a; mz*j1 + 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.r6.jlos xq t65 What is the electric field 6.0 cm s t6rlj5q6o. xfrom the center of the sphere?