State the law of conservation of elr ggwcdhvg;pk*.m( j l-g;95: do-uzqectric charge.

  Is it possible for two negative charges to attract eack. yidt-)gsqn5q do*qi/np ni72g:7sh other?

  Is it possible for a positive and a nex5tz -h pn)og9u7eq4lgative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process wf n0pm,5rrrg4wmv9 )the glass rod acquires a positive charge and the silkrgfr0vr5 w)pn m4w m9,

  A proton carries a

  The model of the atom sh2gmn4jf.aeu (ows a

  A neutral atom always;jcnc . *k8eirkxca;( has

  An atom has more electrotc/n oa 3zlf j9tm p7d0*++b yb9ot+cvns than protons. The atom is

  Materials in which the electrons are bounj3wn m gyqok:p8pr+.rqc81 p* d very tightly to the nuclei are referred to as*cjn1prkq3p wqyprmgo+8. :8

  Materials in which the electrons are bound very loosely to the nuclei and 1w,i dy6e8y 1zcej2qr can move aboue,iqj1c 68ywy2 1er dzt freely within the material are referred to as

  A negatively charged rod is brought near one en0 qsxnicm;+:r c)z:th* 4kfu kd of an uncharged metal bar. The end of the metal bar farthest fro4 *;q uhx:f) ctsk 0nck:r+izmm the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B ise aau2,q6kn3pr (,ine neutral. They are placed near each other on an insulated table. p e(6eq,ak3nnri2a,u Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosco0pxky/ :8a) jado s,qy;h 7fucpe positively?

  An originally neutral xa8i(8et+b m ntqga+: electroscope is briefly touched with a positively charged glass rod. The electro8i (+8m+a:qne tx tbagscope

  An originally neutral elecjz1vo .ya 1t- n80yvgztroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rn avo1.zz1t- 80vgy yjod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. The.sjvqb;jsns3p ) z :8vn a negative object is bsvnj)pv.3bqz sj;8 s: rought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is place4cntol)b54zif 2 bxm ce ;30or/uv1j zd 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 firn z4zt4o r j5x320c;be u1/blv)oifm cst 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 the Coulombwqz;kx;*7 jnj constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firtx9 )whmpt7.apy a 7g zuw084hst charge is larger in magnitude than th9gw ap h7u)4twy0mtx pz8h7a.e second charge.

  Sphere A carries a net c uxz.fm,kd,zb,l c jxze: ndrog 72q:bh.0,6 lharge and sphere B is neutral. They are placed near eachxjdd nq,.lbo2hg ,6f,lec: b.,rzzmz0kux:7 other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force( ;a;9c jb6vegt9u z3da (gk kon-;bqx. If the charges on bb x; ;9o(c kb t9gq3ju;ka(vdeg6- zanoth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exerm5;i:j3q x xikt mutual attractive forces of F on each other. If t:5k;xi i3qmxjhe 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 the foro9d0 hroxc:v5wd s/4i ce between them if one charge is doubled, the other charge is tripled, and c vd sr:d9xi0o5who4/ 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 by a distance of 1.0 m. What happens to 3ghe;-qri f (b3jk6h tthe magnituf3qit-r ;(g 3kjehb6hde of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wha6ya2ppe 4lou naglof /ms:50 7t happens to the magnitude of the force on the6u4n:p70/5 omaypo a2efllsg first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What +jck8.-y1-vedzc mmrl v; ;mthappens to the size of the force on the proton if the electron is moved 0.50 m clomk1 8r v-m z.dly+c;jvtce -m;ser to the proton?

  A point charge of +Q is plac tlxkyf/x jreh)6 t).z8c1z2red 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 charges of -Q are placed at the other three corners of the square. /ylx)c r86 hxj1t2zkf)tez.r 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. Wi zo6 *xf.qc:mf*l4rfyyt 2 /vhen 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 .:oy6c f/l t *vy2m4rfz q*xfiforce 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 nb9z 2fi)trswjex/y..a 8fur/5br7 mq ot a vector?

  At twice the distance from a point charge, the stre jmnuljk c03/(ngth of the electric field

  Is it possible to have a zero electric field value between a negative and posikk f+u.fc(xopc./ 15i.qyqfh-0 di kutive charge along the line joining the t/k+cf0oupf.(yf d 1hqu-c.5xiik q .kwo charges?

  Is it possible to have a zero electric fielp m3x77n8b fsbd value between two positive charges alongnm pb7xsb73f8 the line joining the two charges?

  Electric field lines near psitive point chargesg;gzd /eeczz f9*d*jk3us1q /

  The electric field shown st032h3czk(dluyz7ppjr 0o; wmdob iy(/1 /b

  Can electric field lines intersec ysx,) ca8y:n/vfj *ap4-)rh1eumgt et in free space?

  A solid block of metal in elpf;en qkmrkmq;29z-s6 6q5 l6rg t y5zectrostatic equilibrium is placed in a uniform electm5;5 f6q;tq l9pkne2zgm z6q -kr6syrric field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamec 7twfeh6dmd/0 z0o +lgra9* rters are each given the f+z6 7rd9omr l ced0a*wg0ht/same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum resd *y b;sbw7hqek3e;/nxn *e-d ts on a wooden table in a region where a uniform electric field is directed straight upward. What ca;hen-de73yb; *k /dq*esbn wxn be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charo ,ul18z( bv**q3-bptn jyif nge

  A positive point charge is enclosed in a hollow mbgga u*+ u2m tblaj-5.etallic sphere that is grounded. As compared to the case without the hollb5g . ut-*ab2u+jg amlow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static -x5 df2gkc .wyzl+ 3 gd4hijt)equilibrium.

State Gauss's law.

  The charge carried bdmh -eyy.v;rg+/i4v) ika 8 wyy 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 of +2.00 mC.r:f*5h :zee73 2qe3 ebouibmm How many more protons than electrons does this piece of plasem37qe2h*ezr oumb35e:: bfi tic have?

  What is the charge opkxv.czf 3lm x.wlk kz9e.. 35n 1 kg of protons?

  An atomic nucleus has a charge of ob ; qda, 2pb ft-ge/n/5)utvgmeg -)k$+40e$. 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 value72tg:5r8d u ybzzue q8s of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric for8yr:e 2tq7u8gz z5udbce between them?

  A 1.0-C charge is 15 m from a second charge, and the force between th5oxeipx ;5 btq5ce -k2em is 1.0 N.ebec;xxokq5t2- p5 i 5 What is the magnitude of the second charge?

  Two 1.0-C charges have a xs(rzlu6d*rrb0 .t (aforce between them of 1.0 N. How far apart are they?

  The force between a dm*bot 8hhg745-xvd ubw 5mb1$30 \; mC$ 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 they i4o*h09py +z narx nb2)mg 1iiare moved to29yb*o nxhanzii pi0mr41)g + a new separation of 8.0 cm, what is the electric force between them?

  Three identical poinayh7)n i6jpoky0: ge7 t charges of 2.0 mC are 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. What are the magnitude and direction of the electrostatic force wgke0opij y6y:a n 77)hhich acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.3jpz3o jl;.mbm9: e(plngkm*8j vr3y0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cpp:3(v8b.3m ;o3 l9mmjy*nl gjze k jrm 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 posgdsko0( c1s.kitions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.c(1k0.kss dog 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 center of a square, and a sebhf. j j/)vwci.owe)0 cond 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 th0/j))cf vji.b ew w.hoe 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 = -1.0 nC is at (0, 0.10 m); 6wgztlq :bq9a2,xr3k Q3 = 5.0 nC is at (0, 0). What is the magnitude of azq,6wr:x g9t l2k3bq the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0 v2mcnzw 65vtgtg491f.30 m, 0); Q2 = -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 m 15 vvgfc94zgwt6nt2on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral t3p(s +e6p z: xbbmjm)ariangl xmj(m:a )p3p+bsze 6be which measures 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, which are separated by 3.0 m. Atk7tvw*x7 s-v y what point, on a line between the two charges, wous t7w-k7 vyv*xld 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 th6sd*,vg)x nn oe origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be pg)nd6*v nsx o,laced so the net force on it is zero?

  Charge +2q is placed at thdi3 aa0ze s7-p,htzx3e origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so t,z e3dt30ph7i as-az xhat the force on it is zero?

  A copper penny has a mass of bd 7i(kuz2pe) 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 agai0 y8n01wa y9hthq.scf92.duzw c a. lqnst the force of gravity by the attraction of a fixed proton some distance above it. How far abov9 1dq ca9ay hh.tqfs.wz.nwcuy28 0l0e the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductinge+ws u,hs)ul)n y,/b:2 vpc.uz6vrwx threads which are 30 cm long. Both are given identical charz)nc,sx,6s rbw.u2: pluv w +/ vuhye)ges, 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 oc7j,n3la. 2fji7avffcg3ho /f +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleuio7/g cah.3j nj 2v cf,l3faf7s?

  What are the magnitude and direction of the electric field at a distlr te: s79uxac3wu(*cance of 1.50 m from a 50.0-nC charge :wxset l3ru(*9au7 cc?

  A 5.0-C charge is 10 m from +,muswiu0t 2axnx+ ;sa small test charge. What is the magnitude of the electric0; s+tx ,wx2n auumi+s field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dix59mhf icyl6* q7flo+q:oruz-v5tq g.:arj9rection of the elef+q5cxf:.oj*r r:l6v toa99 qu y7 iglqm-zh5ctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the ,1qtn 53 et)ndkqk 3ynforce experienced by a 1.0 nC chargkd ,nkn3tt35eny qq1)e placed at the location of the test charge?

  Two point charges each have a value of 3.0lmok-ov6ri 9krj80 7 02z fkeh C and are separated by a distance of 4.0 m. What is the electric field at a point midelkk279o6i-vj mfohzr0 0rk 8 way between the two charges?

  A 5.0-mC charge is placed,5 br (zabvi sn)d)vswao)q ,7 at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cvwv d o7a(),s) qrzb)b5isn,am mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed*t lyoic (gbd0d7 bq)/3dd- ):vlmiju at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the el-(idvlm djb 7oiy /u03dcqtg)*bd:l) ectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are phmk 5kpydj5 *3laced at x = 0 and x = 0.20 m. What is the magnitude of the electric fj55pkmk *dhy 3ield at the point midway between them?

  Three 3.0 mC charges are at the three corners of a zzk)1w wy-7l xsquare of side 0.50 m. The last corner is occupz7xw 1yz-lk)wied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 mj b-ucijdv1r.f/ u 0+c 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 electric field at dui 0u.r/bjj1+ - cvfcthe square's center?

  A force of 10 N acts on a s+)q3m +:. q gmcxx o6 b6zsoan*)nzjacharge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fiels gc 3nz qz+*b)6os )m+q:6o.xaxmnajd?

  A particle with a charge of 4.0 mC has a mass of5x 2xshg fp5 )cnj1t7x $5.0 \times 10^{-3} \; kg$. 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 i3sbht f6+j(oN/C pointing downward. What charge must be placed on the ballfo+ihtbs( 3j 6 for it to be suspended?

  A foam ball of mass 0.150 g cl/gc-zubek-2tb*v o)0p *j g l/bx-gearries 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 magnitude and diregx0jl )/- gbpb eugkb*etco/* v2- zl-ction of the electric field?

  A metal sphere of radius 10 cm carria pds6siou.m7pze 8uq.;u1 4 mes a charge of +2.0 mC. What is the magnitude of the electric fieumq7.618ppso;duei z u s4m.a ld 5.0 cm from the sphere's surface?

  A metal sphere of radiu j6 ljovfe ue:,dc*a2)s 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from thelujdoe)ce v f2:*,j6a center of the sphere?