State the law of conservsyms sqar7tz x- m*jog32q87/ation of electric charge.

  Is it possible for two negative charges to ac0nv au),yyo ku-*y ew83 *tkhttract each other?

  Is it possible for a positive and a negativc o/e1t a )2)-ihoqlbqe charge to attract each other?

  A glass rod is rubbed withv+z5js5s ,a zs a piece of silk. During the process the glass rod acquires a positive charge+z5s ,saz5sj v and the silk

  A proton carries a

  The model of the atom shows t,z6 essnop1 ccc:6p8 a

  A neutral atom always 0bn)rfx2uwg 5rg2 r 7chas

  An atom has more electrons than protons. The atom if l;dl0,z9bt rz.):r 7p hvxqys

  Materials in which the electrons are boundn8a3k+6 yud5t 7x r(8rnvapjf+un,cl very tightly to the nuclei are referredn+a68u+r 35j,ynv n( xlp87fraucd tk to as

  Materials in which the electrons are ,nq gcal:)st3bound very loosely to the nuclei and can move about freeqa3 )s:, gctlnly within the material are referred to as

  A negatively chargeds; :ic7l1viob/w ie.q rod is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be ch1iovc7b l;s/.q e i:iwarged

  Sphere A carries a net positive charge, and sphere B is neutral.*2t1wz n6 wj- )t9fg m5o-cags a mf+b4ggk7sd They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which g 6s -g45wtf2gac gt b)s*mj9a+n71-wkdzm of statement is correct?

  How can a negatively charged rod charge an elqix38muxp.uucwrszg 7n6 1. *ectroscope positively?

  An originally neutral electroscope is briefly touched with a pomyh*qb9m0z6s7* ucy wsitively charged glass rom 0 7hbyqum* wsyz9*6cd. The electroscope

  An originally neutral electroscope is grounded briefly while a positively char q*ta44 ghg1f7sytz /,m +lvlnged glass rod is held near it. After the glass rod is removhlts4/ng,fa q+tm7zy4v 1*l ged, the electroscope

  A positive object touches a neutral electroscope,n 9m(,piuyo mifze0gj-y3( pvu3 )2nj and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the u2mfy- zupmg(ij(yn0p3ve9n3i,j) oleaves?

  A large negatively charged object is placed on an insulated table. A neuth 2( ujlagqw4 y.iyx24:boj1ural metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path followed byhujy4iw: (j.y4o qa 1 lu2xgb2 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 thht4a;* fxs7ty eyx 08o -7rgphe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger fvy dwlalp4if0 z*5*1in magnitude than the second chargepi1lyd**v z5 wl0ffa4.

  Sphere A carries a net charge and sphere B is neutral. They are placed nearudp*;:.uvgryo bq0o6.q c8t .u etd9p each other on an insulated table.quctyoo:96.vt. ;bp q *r gdd.e 8p0uu Which statement best describes the electrostatic force between them?

  Two charged objects attract each othe)yn5 limc))tdr with a certain force. If the charges on both objects are doubled with no cty d)))l ncmi5hange in separation, the force between them

  Two charges are separated by a distance d and exert mutual attra331 szhinr 5 q.imql*qctive forces of F on each other. I3zqliqr h* 3i5qnms.1f the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to ortf1cnun)z8gy8 9owk 8* 4wdthe force between themtz *8d8y fcw4gu9 nok)8wro 1n 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 force is now equal to

  An electron and a proton are separxs +:aaj;dcwu6c/ *ptated by a distance of 1.0 m. What happens to th xda+:pjtswa/ucc*; 6e magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are q+utz;zhf7 t4yjqyi dja 38-0separated by a distance of 1.0 m. What happens to the magnitude of thet fhj3u4zdqj-y;i0 8at+z y7q force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distanx c 0df*fb*7vsce of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the d fbs0 c7*x*vfproton?

  A point charge of +Q is placed at the center of a square. Wheqg/e xgrvu4 e ec-ym(kq .ua o2n+,/6wn 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 centega4 q euno 2e/k+xyg6cv-m(/re ,w.uqr. 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 an equilateral triangle. Whe-6 x.vkuclsc: i,7mfrq;n 4wvn a second chafcx u :c,n7-qvi6vl 4mw; rk.srge 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 vect r1bjvjd n7/d(or?

  At twice the distance from a point chargq x0rq)t9k v;iwdd0(1c5.biea;z qng e, the strength of the electric field

  Is it possible to have aigo,0l)m;3,1s fzpgmff * 0mtjk0z qu zero electric field value between a negative and positive charge0 fqsz;tgf1lk*,f3p0mj g)zo ,m0umi along the line joining the two charges?

  Is it possible to have a zero electric field value between two p9gmhd k wq.yw/q m3r2 me-6sjoar l(-4ositive charges along the lineweym 2 ./-rmq l9dm4 ahoqwsr(6gkj-3 joining the two charges?

  Electric field lines near psitive point ch :a;m;h x fp,-zq/3he g+puffwarges

  The electric field shown +lbv 9g ftx7r dx7mc/v 4pe98s

  Can electric field linessdbd) y04/j7 b-g blzm intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform eby3 1e 1:p vpxlox vo.jyy.a;.lectric field. Gia3:y;o. ep1.plx yxo.v1yb jvve a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal vyp)ygtt.o pl/isa2j7v.2 e- diameters are each given thjot7aetl2-y.i 2 pvsvg) ./ype same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests ong7 ff)l) zv;h5 umw0bb a wooden table in a region where a uniform electric field is directed straight upward. What canz0ufwh 7) b ;5)gmvlbf be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium neaztyam yi9q))e28o(otr an electric charge

  A positive point charge is efeef * i)s8xr(nclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field ( xe f)fi8sr*eat a point directly above the hollow sphere has

State three properties of c-0em04f oa5xs 9yat4x gn+ owyonductors in static equilibrium.

State Gauss's law.

  The charge carried by one ei)7lo.zg 7t ytz pe20llectron 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 nt 4.c(sldkqg2 et charge of +2.00 mC. How many more protons than electrkt. 4l(q2sdgcons does this piece of plastic have?

  What is the charge on 1 v,(uyqh 1j)j np9clq.,;bko pkg of protons?

  An atomic nucleus has a charge a .7)cueweb b66pc r7wof $+40e$. 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 valuel t;2yeh w8r:nbd ,4 tgn3va4cs of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between t,3 gclv we;n b82h tdy44ra:tnhem?

  A 1.0-C charge is 15 m frd*, phr8kd3klom a second charge, and the force between them is 1.0 N. What ip*h,8 ldkr3dks the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apao 1pwbwiwl(21rt are they?

  The force between a -tn8,rrzxw,dh 7 o( dl11i d*j,zad px$30 \; mC$ 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 forc o,he9x3:ocybb. lqt 7e. If they are moved to a new separation of 8.0 cm, what is the electril7bb:.9, xtec oy q3hoc force between them?

  Three identical point charges of 2.0 mC ar kl 1jb,4mpvm4e8is 8ne 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. Whatvi8lk1nj8me4 b4p , ms 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 charg2m* uy.aryi (le of +2.0 mC is placed at the origin, -2.a.l*ui my(yr 20 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 located(t zjbbfi9 76w at the following positions: 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 the magnitude of the force on the 36fwb7bi (j 9tz.00-mC charge?

  A point charge of +Q is placed at the center of a square,4 fw8 u/3mfz c0ydw4dw 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 83w4 wwfmddyu c4/ z0facts 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); Q2 =md icxtpp /jcy 2l8382 -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the ma3j2 2dl yx8tp8cpim/cgnitude 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, 0.10 m); Qq 6;wqbnwqj:x(a7;ae p1* cll3 = 5.0 nC is at (0, 0). What is the direction of the nwewlqq* ;al(: jpx 7a16bcq; net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC arekcc(z; kgcl6: q/fu, x 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 g:, cz l/(cq;6u fxkkcthe charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At g qq/6g uype3)what point, on a line betugqqp /g3 ey6)ween 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 ./hiova01 +uhkj jt (oand a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third ot+0(io/a vjhjuh.1 k charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where)u+ v5 poz +vbfo7t/sh can a third positivv)u+tp so zb/v+ fo75he charge +q be placed so that the force on it is zero?

  A copper penny has a m k1h-xqmhri9c;0rn:6ch a5 okass of 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 b5/ada f39l scly the attraction of a fixed proton some dist9af3 l5sc dla/ance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common poi9 bigs+uz( rn o0(k;0,au tmaxnt by nonconducting threads which are 30 cmzubk (,+a0si(a9u tn0xm;rgo long. Both are given identical 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. What fafa(s,xiwa;* 0la 1js8h r p2is the magnitude of the electric field at a distance 81wp,2sa(il0 *aa f ahjr sfx;of 1.0 m from the nucleus?

  What are the magnitude and direction of the electriegc)6 (4dc vglc field at a distance of 1.50 m fro6()4e lvg dccgm a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test chargesk,apmw*t x wgy;-))f . What is the magnitude of the electric fky;wg-t,xfs)m )*a wpield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direccyifn-8w0fc+ 4iro v,tion of the electric fieli4cv+f0 -noi8,yrfwc d?

  A 5.0-C charge is 10 m from a small tee t daq77;0ra 3rud ,afhwd),sst charge. What is the magnitude of the force experienced by a 1.0 nC charge placeddf 0ra wa3ts);7,daq eh 7rd,u at the location of the test charge?

  Two point charges eay f3zb/ 2fr2.7ngy-w/y 5 l tj0cipgwdch have a value of 3.0 C and are separated by a distance of 4.0 m. What is the eleby3 -nczjdpy/27ir w5gy.t ff2l0wg/ ctric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stidee fzk+4gt77 ck and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at thekfe77z +e tdg4 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC char; gn+0l ksn8yoda8r*n)rwo ;f8 i.y lkge is placed at the 50 cm mark. At what point on a line joining the two charges is the elect)8gyk8r*n+ onrk ;.i 8 falsl0dw;onyric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 67 qziazzx4vd4*amx 4m. What is t6zmi7 *vaaxq4d4x z 4zhe magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side v,yf02.+j wyu+obqae:z0 ak 1sx py 6z0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the x:fa+6 1,y2bzz uwpjv00oy yq+s.kea center of the square.

  Consider a square which is 1.0 m on a si i.k1 0:cd bahpr9-uhlde. 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 (l9r.d-uaipb :hk0 1 hc1, 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 unifoidgev *3gf6y0 rm electri 3i06vyfg*edgc field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass1dc mvq ;wzr6; 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 fxsrt .3ay m.f.ield of 6000 N/C pointing downward. What charge must be placed3 ry.mx afts.. on the ball for it to be suspended?

  A foam ball of mass 0.150 g b5p4w n:fek2+ xqgqu 2carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magni2gw u+52k qb qf4xepn:tude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is h)p+rhx(+ abg the magnitude of the electric field 5.0 cm from t +hb)+(ahrxpghe sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC.ee)68vu w::jx/d rdt s What is the electric field 6.0 cm:t:wr/xdd)ujve 68 e s from the center of the sphere?