State the law of conser2pef-gub m8n(i s3,kgvation of electric charge.

  Is it possible for two negatiw(ei.cpg 9j3( dhndv(a yb(y:ve charges to attract each other?

  Is it possible for a pzt4qa6c8apx +uonmj. 1zn 4/wositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durd0.:wqtc r8k aing the process the glass rod acquires a positive rq:kw08at .cd charge and the silk

  A proton carries a

  The model of the atom 3b ol fc( wf(,-zaar7kq cp6q2shows a

  A neutral atom alwayscfnw;a3pef* j9i r0wa 2; y2q2l5fmys has

  An atom has more electrons than protons. The atvd s/8n l(ct3lom is

  Materials in which the electrons are bound very tightrxj o*;zb cbh/e(*im9ly to the nuclei are referrem*(o/z 9riec bxhbj*;d to as

  Materials in which the electrons are bound very lo+3st p1lkvx) losely to the nuclei and can move about freelv3 )l xlk1p+sty within the material are referred to as

  A negatively charged rod is brought near g4vqwzc6 z 5n;vl2h3n one end of an uncharged metal bar. The end of the me ghnlw 5vzqncz62; 4v3tal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutralbyf.yol xb0h1 wqmf(-7 c,1c r. They are placed near each other onrbcl qyw 1.f0,7x-ycmfb 1o(h an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an eleq ajio i9oycd3 +2c a050mcu5bctroscope positively?

  An originally neutral electroscope is briefly touched with a positiv d9bjos 8-2dpt4;kp(:lnfquws;m j d3 x.wkv*ely charged glass rodu;nm3 k j8s kq-x:*jb24s.9;wpdp dwdlotv(f. The electroscope

  An originally neutral elects0o+0xk:ri vve 3 kx(xroscope is grounded briefly while a positively charged glass rod is held near it. After :0so (xkvx+ ke0v3 irxthe glass rod is removed, the electroscope

  A positive object toucheu3inhz x+,v- is a neutral electroscope, and the leaves separate. Then a negative object is brought ne3,xhuv + n-iizar the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A ne5hj2aom:wu / pj cn :wqm/v4b8utral metallic bwqwp 4j/:b /:avnuh oc82m j5mall 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 object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constant 25,hdld 0i h3broxqw- $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge 7gr 2deg7f+mtis larger in magnitude than the second 72e m f+gtr7dgcharge.

  Sphere A carries a net charge and sphere B is neutr2ov+l 1w5ct7c4dbswnlrx 10 yal. They are placed near each other on an5twwn2r 7v4obl1c xy01lsd+ c insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certaz(k p0hs+gfe *in force. If the charges on both objects are doubled with*kzpg (e h+0fs no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attract-a sv6t;gx6 llive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual 6;lt-svagl6x forces?

  Two charged objects attract each other with a force F. What (v7x2fdpp9 rdhappens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to oxp9fp d2r dv7(ne-fourth its original value? The force is now equal to

  An electron and a proton are separated b;gh/p9bi j mg +je.3cqy a distance of 1.0 m. What happens to the magnitude of the force on the proton if a b9g h;jgic3/j+mq.e p second electron is placed next to the first electron?

  An electron and a proton are separated by a distance ofs,9 x6oi amyq:h:c,m vl8j j,z 1.0 m. What happens to the magnitude of the force on the first electhaim,xo, zj:ms ,8cvj : ly9q6ron if a second electron is placed next to the proton?

  An electron and a protn/wgtfxp+eo p x7wmm 0(f6e04on are separated by a distance of 1.0 m. What happens to the size of the force on the pn(47pt mw fe00ogxpe/xf 6+ mwroton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squarxmt9 h hr*w/ ca/ 81odgav2ap9 mys.f3e. 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. What is the magnitude of the net eledv yt s1a3ax.2 garp* /cf9mhh/9w8moctrostatic 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. Wd-95eicj2ym x+q3 9l jkm; ejehen 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 force that acts on the center charge due to a third charge of +Q placed at one of the other vertices? yix-qk9+5 eel 3m;j mjd9jec2

  Which of the following is not gl bas0(po r**a vector?

  At twice the distance from a pointtho w9bl217,qx5r wr3 q8py ix charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negfa.bh-.)k rb 1plv1rdr d/ 0ryative and positive charge along the line0ydr 1 .r r bfph.)/dvab1kl-r joining the two charges?

  Is it possible to have a zero electric f c/ zycx/94tdf;; mvs)earb( oield value between two positive charges along the line joining the two charge a v4rf// esotb);xcd9cm(yz;s?

  Electric field lines near psitive point chag9(w)m/(hlajez h6f** plzug rges

  The electric field shown a)b13ffe3t6 r xedi8g

  Can electric field lines intersect in p ljp bk7isjaw: k061+free space?

  A solid block of metal in electrostatic equilibrium is placed7oam ca8 yd145tir vj4 in a uniform electric field. Give a statement concerning the electric field in the block 5 o1474cdayvtamji8 r's interior.

  If a solid metal sphere and a ,, gffd1wre7f pntsn4 .29gyhhollow metal sphere of equal diameters are each givet1 7dhgpn9,r wsnfy 2ff4g.,en the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum restb9 o 7(wxom5lds on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on t5xbo7m( 9wdol he block's top surface?

  If a conductor is in electrostatic equilibrium near an e,d.gzhwi ,h8z sn;xw jn/jw60 lectric charge

  A positive point charge is enclosedh+o; (bdsra;9zd1 ;w 0 xl:wazj2 ysxy in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly (sz+ sd0;yx1zxl9 jwy:aoh b2r ; wda;above the hollow sphere has

State three propertiet1 7.b*a.asn.nijpqdo l*e8htodr)j-)l 3 w ds of conductors in static equilibrium.

State Gauss's law.

  The charge carried by onevh j wvb8do k rt)b:4;yac/,*h 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 aff*o )ej1it/ h8ep1xg net charge of +2.00 mC. How many more protons than electrons does this piecef)1ie *je/ fp81h togx of plastic have?

  What is the charge on 1 kg of proto -g w+1ahmsuoog4y7g 1h p7o+lbxm:l(ns?

  An atomic nucleus hasq-p.eps2xn b i-,nmp0t.t5gw 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 charge values of 2.0 ,q5 azq b6zp+.gdhs/p and -4.0 mC, respecti q/b5szh+6 ppz,a .qgdvely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 N8-vp4r;w :s bd-f+qi .znqgf+a8gp in. What is the magnitude of the s8f rq+wdq n a-i s4np:.gg-+fbp8i vz;econd charge?

  Two 1.0-C charges have a force between them of 1.0 N. Hd n8z0 i:q.mejow far apart are they?

  The force between a i+1 yhix/a5yi$30 \; mC$ 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 1.0ktu v3-x/(mwo8fkt 4w-N force. If they are moved to a new separation k(wfmok-84tuvxt /w3 of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are etsi iaycv /(e* oue(/q :qs.-placed on the x-axis. The first charge i/u(s* t/ evqe-e:(. caoiys qis 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 the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC i11k8fxjvpb 8k1e 6z-rc/n 5aft kgj0k s 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 magnitude and direction of the electrostatic force which acts on the charge at the o 1vp1gakfk/ fc jrnz0e-x 6tkj51k8 8brigin?

  Three point charges are located at the following positio, qqkflc33v +qns: 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 3.00-mC 3fl3 vc, qqk+qcharge?

  A point charge of +Q is placed dlk8ks vjwm y:/:x6)5 :clqef-i f-u xat the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrosix)fl6-/cml8k : y5qd es:-ujk wv x:ftatic 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 : mjwp8bx/+lxc. uuyqt87( p og3imm5 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is thi+ pt 58ygow (xpbuc8m: /muqx3jm l.7e magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.3 9 )lsyvyt;5hyt 7ferhl8+kf 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 on the 5.0 nC cha8t +9s;yrhlfke 35ylthvfy )7rge?

  Three identical charges of 3.0 mC are placed at the vertices of an equila;t)etw cmld,; teral triangle which measures 30 dewm; lc t;)t,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 a.)bw *rqv,y*ntbf5j +4Q, 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 of -Q such that theyq,fbrt)bnj5 wv *a.* electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C chargn +j/ced7 nsdvae 5)xu ;x2d:ae is at x = 4.0 m. Where on the x-axis can a third charge be placed so tse axunxd n5e:da7 /vdc2+;)jhe net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed iuuv )ni)3vf ubyz2i:vg)p :; at x = 2a. Where can a third positive charge +q be placed so that the force on it is zerougp f;:iiyv3 v))nz2)vb :uui ?

  A copper penny has a mass of 3.:nl .) 8opif2upil 4uj0 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 attm+ q5t/fas er32,y xsbraction of a fixed prot ,m xy5q +sef2r3/sbtaon some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads utq8.)+ uvx blwhich are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betwxqbtu8+v)u . leen the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magni. ;bp*6snzsaatude of the electric field at a dist;bp.zas a 6*nsance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distann4t2 h:hyza5 tce of 1.50 myt n2: a5th4zh from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small testp.*m+0bo kqse charge. What is the magnitude of the electro+s.p b k*me0qic field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test cha og(t3l mpu/xq(, 5b56d qq9be;y5r 5wkensrz rge. What is the direction of the electriqes,qb rt /q(genomldxbkup 5 3w556(;r5zy 9c field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ogc(4) jf ti)qa rxt63pf the force experienced by a 1.0 nC charge placed at thprtf 4x)g3ajc 6qti) (e location of the test charge?

  Two point charges each have a value of 3.0 C and are separated b.8+ p6ysex: mgdvln,qy a distance of 4.0 m. What is the electric field at a point midway between the two chargesn, ge. lqs6x +:py8mdv?

  A 5.0-mC charge is placed at the 0 cm markvk6 2twud il36 of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. iu62tdl 63 vwk What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark fj4b hv jy/x80of a meter stick and a -4.0 mC charge is placed xf jvhj/ by804at 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 2s 4g.w+p8jgu0 kzrxp= 0 and x = 0.20 m. What is the magnitude of the+8u.gpskgrxz20j w 4p electric field at the point midway between them?

  Three 3.0 mC charges are at the three cornersbmp3jw4wvrb4rt s 981z;ww x/ of a square of side 0.50 m. The last corner is occupied by a -3.z rtv8; wjwm rbx1b/wp4sw4390 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Chargt dj /lpg00gr:xcbs3 :es 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 (1d0p/c: :gjlbsxt 0 g3r, 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 uniform electrh/ab sqspg(f hu cbjdf14s p9m4/0 ;e+ic hj4qp94/sbc1uahmsdf+sp/ ;feg 0 (b field. What is the magnitude of this electric field?

  A particle with a charge of 4.8h26qk dx ,drv0 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 qh0r bfm8 tf4m- *u,swnac9q.of 6000 N/C pointing downwar uh ,*tcfa08wqrmn.qm 4-9sbfd. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is p +;j.jf prbc)tlaced inside a uniform electric field, and is suspended against the force of gravbrj;c .pf+j )tity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 m*v scnj yjc3)yrh:1 v1C. What is the magnitu ynvrsh)3v jcy:j*1c 1de of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chsl b ma i-p/*l55ywm(aarge of 3.0 mC. What is the electric field 6m5a /wmy(lp*b5s la i-.0 cm from the center of the sphere?