State the law of conservation of electric chaa; gucven: 5 o+euyt/tdna1/-rge.

  Is it possible for two negativ9ad8s+dv2f*rr8 kvd n3i- btde charges to attract each other?

  Is it possible for a positive and a n,wtiiu t6isfhe a9cf4 i(m1.9 egative charge to attract each other?

  A glass rod is rubbed with a p 9 u7.hjm7c .6vmitoeeiece of silk. During the process the glass rod acquires a positive charge and the silk.u7joteemvi97.m 6 hc

  A proton carries a

  The model of the atom ypp6 crti:0u/i 9ypdi9gw t)+shows a

  A neutral atom always hassw3 9yipnbr8+gp/-,folthpq u/ na ;8

  An atom has more electrons than protons. qd(: a6jewr32nh0whxThe atom is

  Materials in which the electrons are bound,cs9*gqi llm3zj g rx8(s f3:o very tightly to the nuclei are referrsz,cj o 8ml(xggsfrq:*3l93ied to as

  Materials in which the electrons are bound very loosely to the nuclei and cao1 jc1 tw).gofn movgfjo11.)ot c we about freely within the material are referred to as

  A negatively charged rod is brought near5 4 i- +s3wsgi-)swlrw6 b1ourd+mzrhe * ,mxj one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be*- r mesi5z wdm+w 1,grb+xi jsoluw) -h46r3s charged

  Sphere A carries a net positive charge, ansho7- nzh9w+uu g) 5hbd sphere B is neutral. They are placed near each other on an insulated table. Sphere B is brieflyhob hsgz5u 7h)9w+- nu touched with a wire that is grounded. Which statement is correct?

  How can a negatively charge aw1yh;1q fu:ad rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged4bbxcb (p)q8lbhw 6 9hhxt-x2 gla-4xtbh6b hb9x2pcb q)8 lh( wxss rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively chay 6s24l/g dtlwrged glass rod is held near it. After the glass rod is removed, the electroscopell dsw26y/ g4t

  A positive object touches a wd7u-du; 4jezneutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but doe; 47 wzuded-ujs not touch it. What happens to the leaves?

  A large negatively charged object is placed on an i 1 oov5se:j-isnsulated 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 ball touch the negative os:jo5sevi - 1object. What is the final charge on each ball?

  Charge is

  What are the units of y r a (o3wfvr;z/63qwythe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by c/ijx7 m ye t a.5bbmg+el(g+8a distance d. The first charge is larger ixggjb.+ml5y t+ce /e8i7(abmn magnitude than the second charge.

  Sphere A carries a nel xh8pf p-b8dlf5d-: st charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrffxsp- dlhdb8p5 l- 8:ostatic force between them?

  Two charged objects attm 0vr9 (sz12 2stbsos.wr 7vayract each other with a certain force. If the charges on both objects are doubled w2 7y r(vrzb 9av1s2wmotsss.0 ith no change in separation, the force between them

  Two charges are separat gg, i+k)+fwnjdtf;dl (vmx, l+:/rfx ed by a distance d and exert mutual attractive forces of F on each other. If the charges are sepa fx(,j gmd/,)d;+xn :fk w i+lvtglfr+rated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happenw.8;) bjz* xwpls0dwj 9iwxp9s to the force between them if one charge is doubled, the other charge is t z d*jwxw 09wbl)jwxs;p8i9p.ripled, 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 separate4e5a6/d dm tpfd by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second el45 tdfdm/eap 6ectron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hakzmo5a t9f5ry r0ta35ppens to the magnitude of the force on the first electron if a second electron is placed nexttak5za r3t r5905 yfom to the proton?

  An electron and a proton are separated by a dista(xeodww2t 4fq 0t cu+0nce of 1.0 m. What happens to the size of the force on the proton if the electron is move(t 20e4+cwfwu0q tx odd 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of98w)sy bk khshqh,4 n 2l(so93wmbno/ 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 thh(2k/, ol)bb8k os9yshwsn 9hn4mq w3e 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 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 equiladj ,2,vb+fki/vym( h4e o0 zvwp3l2l gteral 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 m vvklogmfzw03 l+p (,, h4yv2ej ib2d/agnitude 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 noplw8nfk3 j ;t 0)d h/sky4ce6et a vector?

  At twice the distance frffzv*.fj wq(/ r)g/peom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and positi.t5 xz r8k*2u.v ec8tbrnyj.qve charge along t rz2vbct..85yj r8uk xet*q. nhe line joining the two charges?

  Is it possible to have a zero qoj5;i )ox5 1ik+eg8-f5vhl dnuv+7m hlwb 3celectric field value between two positive charges along the line joining t5vfkvn)5wc1 73e-h; ou jmi+ 8g+bllo 5idxqhhe two charges?

  Electric field lines near psitive point chardzjtgynv;5l9p 8wez+ 2jazxy .,r*8 jges

  The electric field sh2)(;r 5nn rqx d/hsujvown

  Can electric field lines inteqt hjn; kapklbe e/- y8:-aql:p.(ll ,rsect in free space?

  A solid block of metal df op m+t7(,rzin electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the ed +z(m,tf7or plectric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters arec*/,m zrmm d u*)s5e5+kcrqm v each given the sak u /srz5 *meqmmc5,vd+r*m)cme 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 uadm c)zlq7 3+sniform electric field is directed straight upward. What can be said concerning the charge on the block's topq+zda m )s3c7l surface?

  If a conductor is in electrostatic equilibrium near an electt/htz95/sev zq46zenric charge

  A positive point charge is enclosed incir,mt j 95e(xmv;m:h a hollow metallic sphere that is grounded. As compx9j( ;5hv : emctrmi,mared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static e usu lu(;g;a.vquilibrium.

State Gauss's law.

  The charge carried by0.)v fds ygedo1vy9pbad::3 f one electron 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 t24c*vk1 -ehr nhk((i ak:socof +2.00 mC. How many more protons than electrons does this pieh-1eo 2 4ca ck (iskvh(:rknt*ce of plastic have?

  What is the charge on 1 kg of protons?c7p:2r f8rag(gaj de 5b( m;eq

  An atomic nucleus has a chy- tx2k ba0: h/n( fpn(o,shzjarge 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 c5ja v 7au+f0)uyi+ zh lsymr5z+/8gl f(:ksfgharge values of 2.0 and -4.0 mC, respectively. What is the magnitude of tzsvf s7yr u)+a(yku fgz+:imh5 j5/8ll+agf0he electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is ;,2yzig/ucgl:z jiccu7j h9 +1.0 N. What is the magnitude of thl7z,ciiug h:c 9g yjc /u2;+jze second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How fafx.iz;9;5 a5y96ilpqq tzoq or apart are they?

  The force between a mny 1xxp ck-26n+8cfq$30 \; mC$ 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 thewdnc4vtx726r y are moved to a new separation of 87tdw 4r xnvc62.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cgu0apm(5 ;rba+ /jzsz/z.lir harge 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 0rzs(m/l.;pjbu+iza/g 5zar of the electrostatic force which acts on the charge at the origin?

  Three point charges are p oixdc3; 2kf;.,fr63la5ye 2 d zgkjcblaced on the 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 mag gljk e zrx 6 d2.ac;dfky;f5co3i2b3,nitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the u( gl8 k zyglxn0v yo6uk-)b..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 l 0(nu6gv8x)-z bko y.luk.gythe force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of uwos )6g.g i-c0sarf5 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 that acts on the center charge if a third charge of -Q is placed at the lower-left co 0gsucg siaf6r5 -w.o)rner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is a8ul;e)yd5iidf t3lp,t (0, 0). What is the magnitude of the net force on the 5 5yli)u 8idp;lefdt3,.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = b8fzcm nq 802gknko-/zwro 665.0 nC is at (0, 0). What is the direction of th 6cnnw f-z 2q gm0k6r/oz8kb8oe net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at th( 73exva 2mere;n4awqe vertices of an equilateral triangle which mee xqn ma w37e2r4;vae(asures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, 0-d*r 4 x*;ad7m1hgpnv nszcx which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge mzr* sdagd-npc4 *h0;17xxnvof -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 is at x = 4.0 mx/uwgu0fpj/ 2 . Where on the x-axis can a px2jf /w/g u0uthird 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. u:yhu9 rx gad2 0y-1n: wyuds8Where can a third posiddw2uagy8:0 nuy91- :hs ruyxtive charge +q be placed so that the force on it is zero?

  A copper penny has an .t(5kqope cnu/n -,p mass 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 by the attractiw.nbuq,dwpl4 *6 nm2t on of a fixed proton some distance above it. How f mt4lud,w.w62qb nnp*ar above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pointgg0 .p *chzgr) by nonconducting threads which are 30 cm long. Both ghrg0)z. *gcp 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. What4o2+f1xlq*mno*mfti3 g li r9 is the magnitude of the electric field at a distance of 1.0 m from thelnmq or4x1ot m f+gif2i*9*l3 nucleus?

  What are the magnitude and d ehugjj e(15,cm /hd7t:e6vo am7yz) xirection of the electric field at a distance of 1.50 m from a 50.0-nCe cmxeo75(mjv:e ,tdy16/hj ha uz)7 g charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thennl1sf7xz- 9 zkem;y9ciy 0jq1* x2kc electric field at themnjye19 xcfk-xns1iqcz7y0z 2lk ;9 * location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direh jihrf91 nrl;0g7hsoten1,f j ( -u/lction of the electric fi;l ( l9o71 f hus0t/f rj-h,rn1geinjheld?

  A 5.0-C charge is 10 m fro+au- ip2ibwj0nd vi); m a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locatiojaipb wui; nd-i0)v+ 2n of the test charge?

  Two point charges each have a value of 3.0 C and are separated by qqvb3(z uu6 c7a distance of 4.0 m. What is the electriqc uu7vz3 6bq(c field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sehp0 m eqxj0 9hun-) u.8jlz8wtick and a -4.0 mC charge is placed at the 50 cm00j 89mh8.)qj-huexe pzun lw 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 and a -4.0 mC charf zz,)q(cj)(jxvfq)rge is pla(zx,)(fcf q zvjjq) )rced at the 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 a.m7gj -j0o(ee bl.qac zqi0 v0nd x = 0.20 m. What is the magnitude of the electric field at the point midway between thq-blgem .v0.0 ejq0cz7a o(ji em?

  Three 3.0 mC charges are at the thre-)afdla +e6.3 qwk qqae corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electf+-al6)kqad qw3a.q e ric field at the center of the square.

  Consider a square which is 1.0 m on a sid9w7pltp3gn6gd)3ydxk f17yse. 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 electric 3n7 gk 13xld gyy7p)fstp d69wfield at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uni3m0 :f axdpe8ov;on+b form electric field. What is the magnitude of this electric + vab0d;fen o :o38pmxfield?

  A particle with a charge of 4uxj 0qfmbf:b,,-2 b7gm,qr or .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 0.120 g is place8sfw e8/lkr d8pc3a9ed in an electric field of 6000 N/C pointing downward. What charge mustae/d p8rl cw8f9k 3se8 be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2. qk n7sl,+zhc900 nC. The ball is placed inside a uniform elec7+s kh, qnzc9ltric 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 carricd8a t g/+g*ajn;/vcad8hm d(es a charge of +2.0 mC. What is the magnitude of the electrig /8;j(vd8a* ncagma+ h/tcddc field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mfyi; ;6t 7iu 0-n:csspkafh1pC. What is the electric fi6ufp fs -1kasti7p;0h:;cnyi eld 6.0 cm from the center of the sphere?