State the law of conservationvktv/u;pe d0;o;pq+ mb (c(h k of electric charge.

  Is it possible for two neg( 2 6 vkqtdzi-(ama.ccc,aqq9+ xqrt.ative charges to attract each other?

  Is it possible for a positive and a negative charge to acmhvy 00(q 96ukl0n qottract each other?

  A glass rod is rubbed with a piece of silk. Durx cxc* o69toghm6t *wh 8yx:7zing the process the glass rod acquires a posit6:txzx7th c*9o h*xcm8oy w6 give charge and the silk

  A proton carries a

  The model of the atom sf(k8 ,cz5keb0 h(zd krhows a

  A neutral atom always ( v+sha.,ts:o7lb ucyhas

  An atom has more electrons than protons. The atom iu7 skmci/,1v 2jzrx/ os

  Materials in which the electrons are bound very tightly to thz0 )2sh tuo/jbe nuclei are referred to oth j2/bu)s0 zas

  Materials in which thee:2 :pettw9je electrons are bound very loosely to the nuclei and can move about freely within the material are referred to aspe9e: 2t: jetw

  A negatively charged rod is brought near one end of an uncharged meta0q9/5qpiizi tujxpuaev6 70 a7u i6*gl bar. The end of the metal bar farthest from the ct/u70qeipaig 6 vz5 uu0ai jpx9*6qi7harged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. The heu t99h0y ,js5bovb(y are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statemenu95( vbo j 9,hbtyh0set is correct?

  How can a negatively charged rod charge an electrfb9i5wzw(ro d);zshd * t-5gooscope positively?

  An originally neutral electroscope is briefly touched wito t1p:j z4 k2i2jed8bsh a positively charged glass rod. o 2tpk8i:b 4j2dzs1ej The electroscope

  An originally neutral electroscope is ground.*jq t8v1 cruped briefly while a positively charged glass rod is held near it. After the glass *uv81 ctrqp .jrod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separab6g fo 70dd zb uado39/ar3.iete. Then a negative object is br76bfe3 a0o grdzbo/da9d 3.i uought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is wd2u:pgb2s* ) tj(z5k alyj1ru8hq43ryjiq: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 first ball rolls forward, but does not touch the negative object. At no time does either bala bqjuzly(gu qisjr24p w )ty1j82k3d: 5r*h: l touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constant.* 8eec cfp /5+pjf0yplmg8 fm $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firs )heq1j7hwq k39hekf0t charge is larger in magnitude than th0 q h)7kh913kj ewefqhe second charge.

  Sphere A carries a net c -f pp1gn6d0oqharge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes61pq-g fpo0 nd the electrostatic force between them?

  Two charged objects attract each other with a certain foe8;akwqs7/ l erce. If the charges on both objects are doubled with no change in separation, the fork7sq;a/e8wl ece between them

  Two charges are separated by a distance d and exert ux s9tdqitl/-qp7 w:,tim(q -mutual attractive forces of F on each other. If the charges are sepq:(9dt ux, i- p/s7qtmltwq-iarated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Whatgngm fg70259 s ;lcp 9erc/i.jcr0qei happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is redr;c/qn9cje5psgfl c g rig. 0m2e9i07 uced to one-fourth its original value? The force is now equal to

  An electron and a proton are separ9y2x vcpxxd/jjn 16 :mated 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 fix9 /dpm jv1x xnj6c2:yrst electron?

  An electron and a proton are separated by a dimu8f 1p5gm)bm*vsb gp-n p(z0 stance of 1.0 m. What happens to u pm*mbp)n8-z fg5bps1m v0(gthe magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0xy/ y8u geo,n(pf. d5g m. What happens to the size o(x85 ,u /yodfypggn.ef the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is g (/ink qp3zz7h eyo+o*aav97placed 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 charggzyk(pe *ohz3/9q onvi7+a a7es 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 trian05rg71ww olml2l7ele x9ie;igle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatxl17g0wmor7e5l9wi;lil e e2 ic 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 )p)e3 hvd cxj(p;e4nmor?

  At twice the distance from a point charge, the strength o um;7a f1w:ruk+:g 0uz5qj ubhf the electric field

  Is it possible to have a zero r2 0b/o r8todppsj7,gelectric field value between a negative and positive charge along th7gsjo , 2/0ortbdp 8rpe line joining the two charges?

  Is it possible to have a zero electric field value between two positive chargesdvfs m/l*mh/zx+zf w83iio4j4 9,lif aloniifhidzz ovlf8mw /f94xms3 /+ l *,4jg the line joining the two charges?

  Electric field lines near psitive point chfhw r l0ys3 z/y9dnr)+arges

  The electric field sh 3*ih w/i6wextown

  Can electric field l9qk8 12tfyqphzuw3ipl,+i2 7 v cdt8vines intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifor9lzof- ey u9 .*4btzemm electric fie 9f4zt-.e* yl9bmuoz eld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equalez *mvhqp() ;d diameters are each given the same charge, the electric fph*(;q zm de)vield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a re)q1xhlmq .3u;*hz pjq gion where a uniform electric field is directed straight upward. What can be saidq.hm lu*) q3h;1j xpqz concerning the charge on the block's top surface?

  If a conductor is in electrostathk x.e:s oo;f6ic equilibrium near an electric charge

  A positive point charge is enclosed in a hollj, h 4 s+zqofzeu+97z xnu e7u8-llo8pow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directl-nfpu++z u7 8e9zq7o ojs,lhuz48el xy above the hollow sphere has

State three properties of ymk057(uulih /th3qk+f( j eoi9v ;ayconductors in static equilibrium.

State Gauss's law.

  The charge carried by one eleja8ecng j/4v0 +b .:pf volnl6jxn,s:ctron 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 char/.f ugzhhzku+v5p2p:h ( a6eh:y.rfhge of +2.00 mC. How many more protons than electrons does this piecep(e fz+h pz ukfh256av:.h g:y.rhu /h of plastic have?

  What is the charge on :,d/l tpugybh1lw 78py5 q u5x1 kg of protons?

  An atomic nucleus haza0ej l.om *- otvi3,/cdsxx1s a charge 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 charw*a:hj xta)r 8/bg(; y ebuga2ge values of 2.0 and -4.0 mC, respectively. What is the magnit agxue;y/ hr)(8j:2*btbagwaude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, andpyb 7/ em0j5 i2mzjr2n the force between them is 1.0 N. What is the magnitude of the seconyejm2prb j/m0nzi57 2d charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are tj+cc3tdfhpac,+ r2 w.hey?

  The force between a r zn(vltnt5-(sz (- (,yggmzp$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm aq/5zc)j8 ta iupart, experience a 1.0-N force. If they are moved to a new separation of 8/tu q czj85ia).0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the 0s qczxm152tz944bj p ec;z mgx-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 electrostatic force which acts on the charge at tx jmp;g04betqsczm 1 z9z4c25 he origin?

  Three point charges are placed on the x-axltmssxm6qoa:tr8 - * sg*:p: dis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x =tmdmrssasl*t:x : *:8qp6o-g 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 at the following positions: Q1 = 2.00 mC at xt ,(.uotr.dj qvz0l a)s.sq( d = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitud qtl..srd vzau ,0()(.sq dotje of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center ofv77 h3q elhurilx,0/e ozl4 w1 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 at4q7 wv,lz x7/3rllue 01heoih 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 (0.3 sk-n)e,dt7 rm0 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 5.0 nC chargene r,7)kt-msd?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 ( gcc/ unwn dc*-qh9ul5o s2.n= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (02q9uuc w sc*5lo/n(d .-hnngc, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are po/)rz 0+, kxkggj1rcglaced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of kokrgc/jx+z )0,gg1rthe electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whichq7hncle4, 2h j are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to eqhc n2lh7,j4 place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is ae6 xh/paa j+ y(:,ptg97 qupiqv; h:fdt the origin 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 fovuih7p,dg qfe:+y x;9tp :q6 ( aahp/jrce on it is zero?

  Charge +2q is placed at the origin and charge -q is puzgl(f9nr cyj932dw ( laced at x = 2a. Where can a third positive charge +q be placed so that the forceglcyn (93r2u9f(wz jd on it is zero?

  A copper penny has a mass of 3.0 g. A tokfvqre81)6h z6t swc:tal 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 of a fixedip5y.vv xf6f 3obb 4r1 proton some distance above it. How far above the electron is the prot4.5yf r bvvip6bo fx31on?

  Two 0.20-g metal spheres are hung from a common point by nxw.i ko d-wd-*onconducting threads which are 30 cm long. *kxoiddw-w -. 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 is the magnitude of the electrh3x8mxer esc5u h:b4t o tr ;8qisn(4,ic fit(: bnoqh4 r4erxxhs;5 8ts,3c em8 iueld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at 8 2isrj+u - 1, d/kqpayo7wqhqa distance of 1.50 m from aq,1jiphow /rqs + du-y87qak2 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Wha o8+,qpg myc j3*p(rzot is the magnitude of the electric field83qo +y, rmjpzc*o(gp at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is thyjh.l-q(qio mnv8b ya,a ;) -ie direction of the electric .a yjan l ivhbq,)om(-8;iqy-field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of theb yxytik9ooy4a ):5+)a(ulirxn/ig- force experienced by a 1.0 nC chargratu4(x a/yglyo+9b5-k: oxy))nii ie placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a:khzjkr:**srism.vb (,o (4yna2fum distance of 4.0 m. What is the electric field at a point midway between the fb,n: kar z:*srov4ki s(jm.*uy(2 mhtwo charges?

  A 5.0-mC charge is placed at the m (npt ie;f1fdl2m8tis0x67t*6cjz q0 cm mark of a meter stick and a -4.0 mC charge;c( m ei ntzi2t0j 6qlfp1xt7sm*f 68d is placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is place g +*+lcfarl9ml v,dv*h2zo4wd at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Aclgafldo 42*wml +h9z*,v + rvt what point on a line joining the two charges is the electric field zero?

  Two point charges of +3xh5otyw1u0 e hl86 1 u)pbiyx-.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between them?8y 0u)wi6 ohx5uty-1e1hpbl x

  Three 3.0 mC charges arxw(ok op.6-p ; 6p(y gu1wxdide at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cex.kdw(g;o6ypp(o wp -1u6dxinter of the square.

  Consider a square which is 1.0 m on a side. Charges are placed aqthk-iq, nm5vc,g/m : t the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1),t:hqimmqc5 n,vk / -g; +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 wcgfyog,+asp2 l6:v -m hen it is placed in a uniform electric field. What is the magnitude of this electric fie -pm,g:c2yf v+ogas l6ld?

  A particle with a charge of 4.0 mC 5/- -lopxguru3lyh8x 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 electric field of 6000 N/C poincq* xp7)syn30 lx2jd zting downward. What charge must be placed on the ball for it to )lj z p30x*7ynq xsc2dbe suspended?

  A foam ball of mass 0.15gqba8o bo* vnia *:43kjyyk :rz7q(e/cg h( -i0 g carries a charge of -2.00 nC. The ball is placed inside a uniform elect:7i/jegzq b*biogny(3h 48o:vak *aqyr- kc(ric 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 carrzdu x2 1x/gj8zies a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfg8xdj12z u/xzace?

  A metal sphere of radi nd:-iwm ngp6*u/ml mc.1r,oqus 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphere?, ng :qmwn1-.mr/dc* 6ulp omi