State the law of conservav,sj ;v9qa n,:j4iql jtion of electric charge.

  Is it possible for two negative charges to attract each ot /rdsfz78em8s her?

  Is it possible for a positive and a negative charge to attract eacj1l1hsvkm024.rcy-j0 xywho7w r,y r h other?

  A glass rod is rubbed with a piece gavfr87t pf; :of silk. During the process the glass rod acquires a posit8 fpa:rfg v7;tive charge and the silk

  A proton carries a

  The model of the atom h(.t)ed.dp m1ms l4eq shows a

  A neutral atom alway,ee4jldad8dp.pwslvt4 o-p6 4 8n w1e.tpb7f s has

  An atom has more electrons than)c fp5c (ey+ud protons. The atom is

  Materials in which the ,* 1kyekd1al ztdqh9b42nug ;electrons are bound very tightly to the nuclei are referred to9g2be *k ;1 ,zyt14ukl ddhqna as

  Materials in which the electrons are bound verl4/v(lp jsz7-cj3criy loosely to the nuclei and can move about freely within the material js(r/l 3c4-zjlv7 cpiare referred to as

  A negatively charged rod is br9j3*5 wxmz6j-de n.v 2b2 v azvwfzsd(ought near one end of an uncharged metal bar. The end o(vbd2jd v jnz-2 *axwz . 3fszw6evm95f the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. jag1lg,w5vp7 r wxmw( (f/f18t )shfdThey are placed near each other on an insulated table. Sphe f7s(1lrdw )1 ,8 vxgfwm(gh5tw/fjpa re B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged ro::d4yvev egr8ie zv4y( u(4bnd charge an electroscope positively?

  An originally neutral electroscope is -/ zy+8 bj(tkihrmx+f briefly touched with a positively charged glas/ -hf+x8jzimy+tk(brs rod. The electroscope

  An originally neutral electroscope is grounded briefly while a pox1zfciua-3li. 7gs9sito j5;sitively charged glass rod is held near it. Afci.g9j-;it f 35x oui1ls7zaster the glass rod is removed, the electroscope

  A positive object touches a neuouknc-zy:l/6+.wbcqu hbc17 tral electroscope, and the leaves separate. Then a negative object is brought near the electroscop/bclq uy.1+6owzhb k- :cunc7 e, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an ins-)yn 2:1du ziv4ge fpoulated 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 ei)zv12o edgn :uf4p -iyther ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of tt0vh k:c8 cka+erlaaw 1x0x0;fqc03q he Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first cha8p7pd oe.ck. prge is larger in magnitude than the second chare.p o.7cd8k ppge.

  Sphere A carries a net charge and sphere B is neutral. They are placed ndj+-: a-f u ua;iley/qfay6(mear each other on an insulated tlm/-fi a6y:+ euua;ajfdq- ( yable. Which statement best describes the electrostatic force between them?

  Two charged objects attract each othf8j:herb sc .dh an3ubym+3/6er with a certain force. If the charges on both objects are doubled with nhjr3 3n6dea8/hu:+. cs y bmbfo change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive force- 1qh*a*b sfcms of F on each other. If the charges are separateqa b-*1mfcs* hd by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other witodkb/n akvl6h2 gn 6*3,:j/cvyr8oddh a force F. What happens to the force between them if one charge is doubled, the other charge is tripj ykrvokh/36,o:*ngd/l8ac d bv2 d 6nled, 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 separated b 7zc+kzd6ada7y a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed ne7 da7+ zzad6kcxt to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What 01vl .pvi39n hel6c-.zg gf qxhappens to the magnitude of thi1egg c96lqxz.f h 0p3-vl.vne force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a di fsk6u -qhkj)7stance of 1.0 m. What happens to the size o6-s fhu )jq7kkf the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a r4daam)g 7;ecsecond 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 th)e 4 md;agrc7ae 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 +Qctf w8tx)hcu e) q )ppvs*2-/a is placed at the centroid of an equilateral triangle. When a second charxue/)ttpc ))fvwcqs* -a8 2hpge 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.6 j+iqadn 9/ vqc)p5;hqyqzm?

  At twice the distance from a point charge, the st9wn3/qvm+)ldml1g x /meyd e6rength of the electric field

  Is it possible to have a zero electric field vv ,/) evwnvv(aalue between a negative and positive charge alo,)vawvnv/v (eng the line joining the two charges?

  Is it possible to have a zero electric field value between two posrwvbp3gk wu.)vz wj 6 l7tx/*6itive charges along the line joi.vv ku pl*wjzg 3)xr7w6bt6/w ning the two charges?

  Electric field lines nearvro(.1bo f4p 7wewv)p psitive point charges

  The electric field sr yap/exg5d;7 afdk nj6b;q..hown

  Can electric field lines intersecmn d4 -3;:tt+rddptb at in free space?

  A solid block of metal in electrostatic equilibrium is placed inkczp d8yr60f)w nx: j:p2drf- a uniform electric field. Give a statement con0dj zr p6ypr:f2)c8w:xndkf -cerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eaqu ,7we 2c+ggj-kw9xy+o.m5r f1vvf mch given the same charge, the electric field (E) midway between the center a .,+m gfoc7 fmuq+ ev1w5gvx9rw-2jyknd the surface is

  A cubic block of aluminum rests on a woo*6 a2oh kmfh2zden table in a region where a uniform electric field is dire*koha2 m 62zhfcted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrdw d zxw9dy9pm41w6:a ostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is +qo m;uoo4 o(nz.gb1ve 0ci(r grounded. As compared to the case without the( qouo .icrnm0e;b4voz+( 1o g hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static parz6 ba* vr--equilibrium.

State Gauss's law.

  The charge carried by on:1) .)gbnwl9y sk ybeae 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. How many more proto7btedk6u1 .vx;xap z3ns than electrons does this piece ofp 1v6z t.;xdke3b a7ux plastic have?

  What is the charge on l lz0lsygx p47:n zgkvkxo 6:0kfz8ry)7.kp 21 kg of protons?

  An atomic nucleus has a charge ofcal 04pbj,qrao f;t r7p 7fh*. $+40e$. 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 values ofsy d wf.19q9bc 8vr,vn 2.0 and -4.0 mC, respectively. What dq v1r.ys9,c wbv9 fn8is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second c)pnyj9til /d:s9io 8a12hrycharge, and the force between them is 1.0 N. What is the m/r) 1sdliihyt2nyj9o8p :a c9agnitude of the second charge?

  Two 1.0-C charges have a force between them o 23na py1ukujxoui f 11 44yn7,fgwbv4f 1.0 N. How far apart are they?

  The force between a 8wka.+fmv,w s$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiegi( amdsm2f31 nce a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric forcem m12sfa g3(di between them?

  Three identical point charges of 2.0 mC;kip (c8b vgw3 are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the8k;(biv 3gc pw third is 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 ptrd30hlfr6 : . bc svuthayx)03d)ji- xji3,are placed 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 magnitud6tt:)0urb h3sj.p3d ivdicfr3ax, 0x)yl-hje and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00bp by0m9sb + 5c+mmpcz0w5t-r mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = tc0pwc 9 s5 m+zpbmy -5m+0bbr-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 centevvqjv n8 nqzn5bz/j:8/6z5ic r of 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 placedzv zjnn n/5 ji:6c8b v8q/z5vq at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, u456 9(0q/ ;ckmxf ea1lnusmpzaj (mo+:mxta 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 form kutf/(q:lzxcuem s; 9n6a51m jp4 +xam(0oa ce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.if 46h;3e7io3e:z5jpf e/ qpjgaii )h10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the iz3h;ioi6 ej3q:f p7fhi/ j5geap)4 e 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral 3l e9wwvz//c striangle which measures 30 cm on a sid/c/s9 lewz3vwe. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q,m cg1az (jr*6 5fl8je (i48xrar, xbxh 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 ofxf8al r( g81a,rc6ihj(xj* b5zx 4me r -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 =fkq7, c*ailx+j1*.izentc 1u5 ama 5 z 4.0 m. Where on the x-axis cc7 aqlf*iin1z +5t1 au.k5 ex z*aj,mcan a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chargew(p 8q3 tmbub0 -q is placed at x = 2a. Where can a third positive charge +q be placed so that thepbt0q (83uwmb force on it is zero?

  A copper penny has a mass of 3o hov4fz:cpec)4z. 6a n)h(e *o2axlc .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 the7arq c mzi;;7zj:jm,q ft*bj ) force of gravity by the attraction of a fixed proton some distance above it. How far above the electron *fc7m jaz,;qrjij ;z7)tb :mqis the proton?

  Two 0.20-g metal spheres are hung fro(9unhyo+(-doi : w7evrcnpp( 1 yub3j m a common point by nonconducting threads which are 30 cm long. Both are given identicou dvnw(ecpnb(o1r(9 yhy 3+ ij7:-up al 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 k8+z ejl5gg 8z6aj -llj,k; arthe electric field at a distance of 1.0 m from the nur+j6zg8 l; gjj5z,kae-8kallcleus?

  What are the magnitude and directioz37bqvx );0evo( hhhon of the electric field at a distance of 1.50 m from a 50.0-nCxbhz7 ev;o0 h)hqv 3(o charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude oyfc5: il*eml5 op. ;rif the electric field at the location 5:m5 yfcl;*lrioeip. of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is th(u:;dvpy7pi pe direction of the electrppi:uv(d7y ; pic field?

  A 5.0-C charge is 10 m from a small test charge. What is thav:;ngabttr5:x xv2u) e g6j3e magnitude of the force experienced by a 1.0 nC charge placed at the lo jxnt:g ;3ex65 :urvva2ga tb)cation of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance of 9rl(u ,d6j gng4.0 m. What is the electurd 9l nggj,6(ric field at a point midway between the two charges?

  A 5.0-mC charge is placn) jrz6pe w0 13pxrihhpby/mv( o2v,e6/ h6gzed at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the2 in ph (z3z, /6byv6x)r vw1h0hpo/g 6emprje 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a .cl7wsb7yjj8p.*g fb -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the l wpyc8b.jg*7.7 sbjfelectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at xx,v8;w eku y2e = 0 and x = 0.20 m. What is the magnitude of the electric ex,;y2uew k8v field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m.j1der er :f5(mwp+0pj The last cor+jr15jperm0 (pd e:fw ner is occupied 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 are placed at t;;wgx)c( un t.+mw mw rib.6ixhe 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). Whw)cii x;.t(6b+r.gwm xu wn;mat 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 uniform electxnm o9(3 gt*xcr.u r(bric field. What is the magnitud(3( rgx.n*rmob 9u cxte of this electric field?

  A particle with a charge29cbh9k )5(mo3 mtnh *msgvrc of 4.0 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 placed in an electric field of 60063i 3 r5+pe4k i8rnp8ccxgy; z;yxbeh0 N/C pointing downward. What charge must be placed on the ball for it to berpy 4;ye ;bi+hnk3gx5cxz i6p 883c re suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed we g6nfs08 o66sg (wql+cp(zeinside a uniform electric fi secsgfz 6 olw +p8n60qg((ew6eld, 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 carrd tha+ta yak -f6,u94gies a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere' dh,-ukgf6+t4y aa t9as surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electsgn7azp7-k 6r ric f zgrspn7ak6-7ield 6.0 cm from the center of the sphere?