State the law of conservation of elqx vf8 m-w2;llectric charge.

  Is it possible for two negative charges to attract eachpe4.0lw3er xj other?

  Is it possible for a positive and a negative charge to attract each other?)elu /xgx,) tq

  A glass rod is rubbed with a piece hi zy/i(8dmg t:o v),sy uz3p/of silk. During the process the glass rod acquires a positive charge and tz: (vhpg t dz y,iuiyo/8s3m/)he silk

  A proton carries a

  The model of the atot17-f/c)rxee9 o uzism shows a

  A neutral atom always has +i3ppuo:(0i i9y/yiqf *ti kl

  An atom has more electrons than protons. The vv p v.y odi,,vpzd+.5k;sd1x atom is

  Materials in which the electrons are bound very tightly to the nuclei are referrxyg2ysvxzub0s3jr2 )xe dap:82 zf) .02)2 s32z gzar: fbex8vxjpy.xd )suyed to as

  Materials in which the electrons are bot dl7ao a+e.z :bbtw;-und very loosely to the nuclei and can move about freely within the material a:7atd t l-z;b.ebao+ wre referred to as

  A negatively charged rod is brougp ,b6f:j3) hjdqyhy)jht near one end of an uncharged metal bar. The end of the metal bar farthest from the by3h6)dqjhj ),yp:j fcharged rod will be charged

  Sphere A carries a net positive charge, and sphere B is nre n( ol4l-v,(l *zmgeeutral. They are placed near each other on an insulated table. Sphere B iveo,mng lr-ez(4 ll( *s briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscop u62qa*o x3kpme positively?

  An originally neutral electroscope is briefly touched with a posip :16bu+pprz:- yacdatively charged glass rod. T1y da6p: :a-pbcurpz+he electroscope

  An originally neutral electroscope is grounded brie/w /2r,30yze hw9g p3ae ;x q7xnzdacrfly while a positively charged glass rod is held near it. After the glass rod i203wa /d rw3,cxnx9y rp ehgq7 a;ez/zs removed, the electroscope

  A positive object touches a neuqzeq46 naoi/jhkg80ot:d;1z tral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Wha 08nzk 46 ;zehqoq1oj:gd/ti at happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral mew zyyu (o4xyc9m; s ,ke3m/dm2tallic 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 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,yxyu(ms3dk mwo y2m94 e/zc; each ball?

  Charge is

  What are the units of the Couloc5kz:zc+;a-;w v bmvqmb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largermm9 nhs:)jg :yhzs2-za9o )zh0 b eha2 in magnitude thahhe:sz2gm zam s:yb - 2n9)az0h9 )hojn the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are place 7 gooeadv:*mpv. g)iuyeb0(0d near each other on an insulated table. Which statement beseaggi(e*p0b mo 0 )7vd:.vuyot describes the electrostatic force between them?

  Two charged objects attract each other with a certain forceus+rh2.7 nyu 0de ,z-z yqmug4. If the charges on both objects are doubled with no change +z d7msuy-42gh0.u,qnryez uin separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive /qgdah 8t,4n iforces of F on each other. If the char,ai 8 nghd/4tqges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force Fhuk+zdon5n8 w4 s7i4t. 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-48 +wn5 kuh4 z7dostnifourth its original value? The force is now equal to

  An electron and a pr 6irxw 1-xm,knn4rg, xoton are separated 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 electron r6x1-xmr x4g,w ,inkn?

  An electron and a proton are separated by a distance of 1i j7 4gg.nhrb6h0,bn s.0 m. What happens to the magnitude of the force on the first electron if a second electron is pl ,ng4nsh6.hb 7jrg0bi aced next to the proton?

  An electron and a proton are separated by a distance or8 /,;bpuz zc.xsdu4nf 1.0 m. What happens to the size of the force . bz;,xd8pszucu/4nr on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the *4. j (lzjtq/y cyar+rcenter 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 maglzaqc +*y tjr4 .(rj/ynitude 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 equilateral triangle. W ybs-l1c c*fm.;7 jowt+r: t,)wsuae qhen a csr7-+s tct *wbw,am.l)que;y jo1 :fsecond 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 placed at one of the other vertices?

  Which of the following is not a vector?o 1tc.z-mzk2l

  At twice the distance from a point charge, the strength ofk i1hdsig uxw.,j ):g- the electric field

  Is it possible to have ntv h;enwm29:ez yd;9 a zero electric field value between a negative and positive charge along the lth ;dz :2n;9ywven me9ine joining the two charges?

  Is it possible to have a zero elecls/cl* 4jzht)ybmc75 (4xre ctric field value between two positive charges along the line m4brht(ccxclsl z4 /5*7)ej yjoining the two charges?

  Electric field lines near psitive poin aq49xfj0 zlc2t charges

  The electric field shoikt/v *dp(vl9wn

  Can electric field lines intersect in free spaj2xt 7q(vit,z)cg i*cce?

  A solid block of metal in electrostat:tb i1y7 ks0wt+lrnp)m - a5na7fmkyf6+4hvf ic equilibrium is placed in a uniform electrin5r:kff06y+a7l + p bf1v -tynh wksmta47 )mic field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere 5k* p/j;3htqzaz+mj o of equal diameters are each giveopjj* t5k+ za;3hz mq/n 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+ia mspv 2pl 79+nu8zm uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfac+9pui l8maz sn2mvp+7 e?

  If a conductor is ing qpldtf)r)e,n r5id3:b5k w 6 electrostatic equilibrium near an electric charge

  A positive point charge is enclosed in hkl1/mb 1j+o*dp -scea hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point direp1+j-c*1l/ mdo skbehctly above the hollow sphere has

State three properties 2v20 nbkio1q *u uaw-sof conductors in static equilibrium.

State Gauss's law.

  The charge carried by one elezr x -q9d x4 f(afzj+)m0ez9bzctron 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 ty 96bhlu:) yrkhan electro9b6 ykylur:)h ns does this piece of plastic have?

  What is the charge on 1 kg of protondu7uoh: 1 -k6ujlgr9xq ykj ..s?

  An atomic nucleus has a ch-8.x z.. m ftxronr3 vii0xo )w)sjxa)qv7- hyarge 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 chait +htj n99 jzlcb)v/brw9b9/ rge values of 2.0 and -4.0 mC, respectively. What is the magnbv/cb9h99j bi+n ljt rz/t)w 9itude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 b-k wjyn na(-)N. What is a-)( wybjkn -nthe magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far ady4iuj4 yq3o zdagu5ee+yy7 ep:c6- (part are they?

  The force between a * o vc4mt3/k0pe8gbue$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart,-c2scso,*dn d vj8-rbmj32(fxq s-rb experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betr2sxfs8c-bm2- ,j rd*c(os q jnvb d3-ween them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The: mpec)o:u(e e 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 elec::(e )ou eepmctrostatic force which acts on the charge at the origin?

  Three point charges are placed on the xjev1n:myf 2e) -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 magnitude and direction of the ele)1n2 vfj mye:ectrostatic force which acts on the charge at the origin?

  Three point charges are locwh9u: j8zbok20wc1yfn0b .kqated at the following positions: Q1 = 2.00 mC at x = 1.00 m; 0 q9yw2.f8wk:nhubkojz 01b cQ2 = 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 cenr(3 1 5qxqkv dsq6ig:qter of a square, and a second point charge of -Q is placed at the upper-lefk(351:6sqvrqxqg dqit 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 s tzyw-i0 c a qzin8*8e;da.1dm, 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 nqd; 0 s1zc *w .adz8atey8iin-et force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); qajk6e g8uo;0l2zh6mQ2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC cha2q lk6guehz860o aj;m rge?

  Three identical charges of 3.0 mC are placed at the vertices of an equ,htvaqjx1y+6 +czwy l89eh6 lilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic for,8l hc+qtazh1y+ lywjv 6xe96 ce which acts on any one of the charges?

  Consider point charges of +hi0 uwp +icc(:Q and +4Q, which are separated by 3.0 m. At what point, on a piwci0h( u :c+line 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 ori uw p9qb+.p:pigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is p:pi wbp.q9u +zero?

  Charge +2q is placed at thitp 3g9h i.j.8lc z7;zo.gbhue origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force i.jbl .h p973gz8ziu. th;cogon it is zero?

  A copper penny has a mass o.q/vqi9k qd +lf 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 by the attoh.da q8 4*v m+7,f,qyfo ntmoraction of a fixed proton some distance8 ndqf*+o4y otm ,qmvf.o ,h7a above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a x nsrhcw (p gt5ol5;53f gr8vvmg55x 4common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatn55 toxr4h;rg 535x5 mv 8wfcg vs(glpic 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 magnitude of thed.p ;9vpyo3gt electric field at a distance of 1.0 m from the nyt;g .po93vp ducleus?

  What are the magnitude and direction of the electric field at arl-w1gsm(fo;. p j dz9 kf7 5rlp2t4bz distance of 1.50 2(4r l;. d z5t-l7pmofk z9 fwj1psbgrm from a 50.0-nC charge?

  A 5.0-C charge is 107jj)pwv-vnk8, zzxu *.jx y)t m from a small test charge. What is the magnitude of the electric field at the location of the kpx)zj*).vjtv 8,z-yn 7wju x test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directionukhbs re*vm -0p7.3wmck v-r-c *(gh t of the electric f( kuhm.r0sgtvmh e-* cvkw-3pr7c-b*ield?

  A 5.0-C charge is 10 m from a small test charge. i+p/yza 5 )vtrWhat is the magnitude of the force experienced by a 1.0 nC ca/zrip+ 5t) yvharge placed at the location of the test charge?

  Two point charges each have a value of 3.0 cdr/(7c hh2e pu66xreC and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two char2h(pe/hxr667ruc dc e ges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick andb: f9:*wkuiu q a -4.0 mC charge is w :iu:9k*ub qfplaced at the 50 cm mark. What 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 andqe-1k,xzeb q; a -4.0 mC charge is placed at thb,1x ;eq-qz kee 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 = 0 and :0)+i+u gdtx() hxpgo i rx3lol:)d qbx = 0.20 m. What is the magnitude of the electric field at the point midway between t()dol::upto lxig)gdq+ )bi 0r3x xh+hem?

  Three 3.0 mC charges are at the three corn5l 2h rl)aou7hers of a square of side 0.50 m. The last corner is occ2)h7 ul5rolh aupied 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 ba 8d;( eqkz mc: wnw45q2,*4uhyuqck are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4zd4c:wk cawk(bn;ym2q he* 58q uu4 ,q.0 mC at (1, 1); +3.0 mC at (1, 0); -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 in a uniformc.mzihysa j7w7od*wm i x);nh 2cb/46 electric field. What is the magnitude of this elniywd zc/ a m *oj6;2mw.shhc)bx 74i7ectric field?

  A particle with a charge of 4.0 mC has 8gzth)kr4 j:bwv *m)ba 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 anp1p2 t5 l.f7ko8h5 ulpy*qyuy electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be *ky85fp12.l7otyhuq lpy up 5suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nCgglom+ kvjn:6z7j p 4o79 jevmzyn/5 1. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the elvje7 np/9 y 5vn14+ 7z:6jmkzologmjgectric field?

  A metal sphere of radius 10 cm carries a charge of +2.0rd p9mzi 2f1k- -l3bc 3uwnl8n mC. What is the magnitude of the electric fieldz-3891m 3nlrkdc f- w2npliub 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm car w;zw.cr/ ud*w at+s.loq(kx)ries a charge of 3.0 mC. What is the electric field 6.0 cm from the c(x+c waquw.oz .s); wdrtlk/* enter of the sphere?