State the law of conservation of ele q5isordn m3b;as, 3h8ctric charge.

  Is it possible for two negat z q;g - sc(fmpxrag3.gp4f4z6ive charges to attract each other?

  Is it possible for a positive and a negative charge to attract each oy(;ka0 qnx)kq hcmqjfg9p9 : ;ther?

  A glass rod is rubbed wijds6d42i bnq x-e./b sth a piece of silk. During the process the glass rod acquires a positive charge and the j sbiqx4d ./2b s6d-ensilk

  A proton carries a

  The model of the atom o2mg.by:g atm u5/q3lshows a

  A neutral atom always ha9w8c wfe6wf x2s

  An atom has more elew4 ij:+c g q obxa;f8+dyey4.yctrons than protons. The atom is

  Materials in which the electrons ar/)g olw 4)ulze v5a0*(av)mo ekh8bmie bound very tightly to the nuclei are referred tolg)*ow he5/8aoil4( b)m vm evaz0 k)u as

  Materials in which the electrons are bound very 0j 7m-bzlugu; l9ybp;loosely to the nuclei and can move about freely within the;l;bjmbp0-gu7y 9lu z material are referred to as

  A negatively charged rod is brought near one end of an uncharged vydw98am 8gp 1j.j0 lvmetal bar. The end of the met vjmg9 8jpw .80a1vyldal bar farthest from the charged rod will be charged

  Sphere A carries a net posit aw)2o 0m0tx o0saa,twive charge, and sphere B is neutral. They are placed near each other on an insulated20) wsaxa0m,oo0 t twa table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rodfbuz*. zalv4ow r* ,;c charge an electroscope positively?

  An originally neutral electroscope is briefly touched wittzxqjj98tkr *qq0 *0fh a positively charged glass rod. T*0qxjq9qk j *0z8rftthe electroscope

  An originally neutral electroscope is grounded briefly while a positively t )f( dpkj+2xbcharged glass rod is held near it. After the glass ro2bjdk)fpx +t(d is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sepa() 9*vg tmaqsaf-gtj) rate. Then a negative object is brought near the electroscope, but does not touch it.vq9)j gm-*(tg)t asfa What happens to the leaves?

  A large negatively charged object isudsc- ejsca 7+9-.ba3yri :svbr: (ur 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 b3r:yrb9s 7e(r- cisav+jcb us.-a :ud all 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 0r)9-y td8) dnritzlo$k$, which appears in Coulomb's law?

  Two charged objects are sep 1b*4zvej - j.t2glrq;p z*sgvarated by a distance d. The first charge is larger in magnitude than the second chargpz4z2 e*l1b r.tjv q-v*sjg; ge.

  Sphere A carries a neiqqb.4 / n)ot6zj)njmt charge and sphere B is neutral. They are placed near each other on an insula/.zq 4joibjm)n6n)tq ted table. Which statement best describes the electrostatic force between them?

  Two charged objects attrac npqeu49( phg9;w/ uvdt each other with a certain force. If the charges on both obuhp(qe u; d9n/9 wpgv4jects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exe61pn,w 52v yo9np dmlkrt mutual attractive forces of F on each other. If the charges a6521p pm v9 ,ynkonldwre separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attractad:thqj6x9/6gr 9p kq each other with a force F. What happens 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 one-fourth its original value? The force is now eqq 9 9gk jrp6/d6:haxtqual to

  An electron and a proton are i. v1n/hg: p 1vzwxyg2separated by a distance of 1.0 m. What happens to the magnitude of the force on thew hx1znpv.g/g2: ivy1 proton if a second electron is placed next to the first electron?

  An electron and a proton are separated b g0nsqpas yk *1js 5lo0/r9hx v).;gnby a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a seags*9 5jk;r1qbxgh) n0n.y0p/os lsvcond electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whauzkfcmtqxtr .l -k:0 *un7d:b 1qp-4w t happens to the size of t-4:t: cwr1z lnb7qptq- *fxukm 0du.khe 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 afslg26c e3 0vg+ c(jxz 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'0zje+ c(gsv2lg fcx36 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 equilateraln42tj+g/05oko gk u mt9wszi)0dr 7cz triangle. When a second charge of +Q is placed at 7mr+o05/wo4j 2nzitdc9)guk stg 0z kone 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 venfeoeeao6id/5) c 2 8octor?

  At twice the distance from a point charge, the strength of the electrila/js:o43k)vrc5ij(i,h :kvr+m gc s c field

  Is it possible to have a zero electric field value between a neg,xuei nyz+;hbnk/:a+q fk;. gative and positive charge alonai ,u n+z.gk+nqhb;fxk; :/yeg the line joining the two charges?

  Is it possible to have a zero electric field v:d*2a5so5h.09ijn bk t sszkk alue between two positive charges alono: 9tk*isjk5d a nz khbss0.25g the line joining the two charges?

  Electric field lines nen,bkb-f*b a7t p zm/pyvyk0 :0ar psitive point charges

  The electric field shojd c 87p:0rdcc a8vw23cz f(bewn

  Can electric field lines intersev8b wl;1ee +rb4 ,fufmct in free space?

  A solid block of metal in electrostaticg* 9midvhm osc.p32d; equilibrium is placed in a uniform electric field. Give a statement concerning the3ovh2s*9.mid g;c dm p electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of oko3zt ))9puqog 8vp72nu/o ,oy nni)equal diameters are each give9o/o8pzo in ) 7np2)novu,qk tg3o)y un the same 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 wher/ f xa sc./:7mtp bij)bo.ix.we a uniform electric field is directed straight upward. What can be said co mbxio .jc:/iw)bt7sp. /x .afncerning the charge on the block's top surface?

  If a conductor is in ei2 /kuufg.pnlc of /09lectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gs aqb.ag, g0u;rounded. As cbs a0,.; ugqagompared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductorx*ie9n5 0m4 gxs* uuxes in static equilibrium.

State Gauss's law.

  The charge carried by one electron ic.//f p.vvdss s vh p0k.6ih(vs $e = -1.6 \times 10^{-19} \; C$. 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 mn0ph rwav*r,1 ore protons than electrons does this piece of plastic h0a rn vr,1w*phave?

  What is the charge on 1 kg ofb,hhe n ::iqsaz5jb91 2g kq;q protons?

  An atomic nucleus has a cha0vp.:)6 qgt8k,jjbdkk rw b+hrge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sep04k9kggvxn- q arated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betwgv4nkq 0xgk- 9een them?

  A 1.0-C charge is 15 m from a second charac/0dszd ,3 pyge, and the force between them is 1.0 N. What is the magnitude of the s ,p/dzysd0a3 cecond charge?

  Two 1.0-C charges have a force between t;yhu1g x/y ako-a0) cmhem of 1.0 N. How far apart are they?

  The force between a ulpx h;aib v,4fo .(l,$30 \; mC$ 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*w.y) 0+cga6xneg fe:d1mcib they are moved to a new separation of 8.0 cm, what is the electric force betweeng)bw.a m6xf 1ecci 0dyg+en*: them?

  Three identical point chargbaer5 u8s m4s +sa:iq9es 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:as5im94s8 ues abr+q 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 +2a, c+bzyeo9)ovi1qx9t 2a*uf .0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC,1 v zba+2o9xc*yf o9iqeut )a 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 theeqff +- wks,0 ddb9gz3 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 ds30q +bedf fwzk,g9- is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of *an;bii 77pkz69k9tohkdkeg,2vw 9t a square, and a second point charge of -Q is placed at the upper-left corner. It is obow6*kaik i9 bhz79n9et7t; k d 2vg,pkserved 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0)g8xk8ln4y 8hw; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the ngn488l hwy 8xket force on the 5.0 nC charge?

  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 0. -/hzv lp:xmjkm -jc+*dfc rat (0, 0). What is the direction of the net force on c -fv/.jxd*jp-cr+:lh mkmz 0the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the-pqyl e9k2pv ny-5t 9r vertices of an equilateral triangle which measures 30 cm on a -p9 n5ypvk-l2r9tye qside. 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. At whal t, puj*w c+oo)/rz)ot point, on a line between the two charges, would it be possible to pw,zo )rotuoj +p*/ )lclace a charge of -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 sly* i+n kr5xuhd0l4/charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zerokyxn/l r0+ih*5u 4ld s?

  Charge +2q is placed at the origin and charge -q is plaqmnjs48y +1exq.:,ehlaqsbf;u* 7 wz br50t y ced at x = 2a. Where can a third posit7 u shqqq.s1tye;ae*frmy n,wbj : l4 5b+0x8zive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total -qnpb+w3x;y:.d cv0 qvwnz+k 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 fix /laof o es9t-w5fomaur-0u.* ed proton some distance above it. How far aboo/- . o50mlat*oe rsaff-uu w9ve the electron is the proton?

  Two 0.20-g metal spheres are hung from a comm6 z2zv zgavx gq/te;8p2d83 z7)rdgtpon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forcv gge d2zgpa/pt878d3xz6;2zt q) zr ves 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 +4u.0ve4p- cl ga0e. What is the magnitude of the electric field at a distance of 1.0 m from04 -e uv.paglc the nucleus?

  What are the magnitude and direc0y ;6wpxqi3 ie ;vdmgx-z2;h ction of the electric field at a distance of 1.50 m from a gdi x-wq3ve;2mi;hcpx6; y0 z 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What g vn:zb 3zkoct.4;+uu is the magnitude of the electric field at the lock4 ng:bv. z;z3uo +utcation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What isjilpe 8 -em4,x the direction of the elect,4lp 8ei jmx-eric field?

  A 5.0-C charge is 10 m from a small test charge. raot p4*d 7z/wWhat is the magnitude of the force experienced by a 1.0 nC chard 4art wpz7/*oge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C a3 a-)i) pfp t74puxmqnnd are separated by a distance of 4.0 m. What is the electric field at a point midway between)m)i7a uq4-nfp 3 pxpt the two charges?

  A 5.0-mC charge is placed at the 0 cm5*:g 0zvg kdimw 8*qjukg17 wk mark of a meter stick and a -4.0 mC charge is pldgkvz15w7u q*8k*j k:0g mwigaced at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 09(w+g2yb h(1tghf ldr 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 electric fiet2(l+fd9g hbh (1wygrld zero?

  Two point charges of +3.0 mC and -7.0 mC are place7w s8/hh(8 ijxx sntg) sn.ay2d at x = 0 and x = 0.20 m. What is the magnitude of the electr x yias8 h7 (tswngx8j).hn/s2ic field at the point midway between them?

  Three 3.0 mC charges are at the th/*0yo1e8gtx6i d.q 0m catpyvree 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 center d6o0a.8/*xe tgvt 1qy pci0ymof the square.

  Consider a square which is 1.0 m on a side. Charges are pl2.em s4p ;ifn-psgqi /aced 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 t ng./pqsf i- 4eis;pm2he square's center?

  A force of 10 N acts on a char 4panb0k-; uysge of 5.0 mC when it is placed in a uniform electric field. What iyk4pb-0s u;n as the magnitude of this electric field?

  A particle with a charge of 4.0 mC hnzt(pqb8o*obg c c (5ai 9uk1-as 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 ep m4;vkn ))pvmlectric field of 6000 N/C pointing downward. What charge must be placed on the ball for pmv n4mk))v p;it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball i8zp5 u4 cdsit( 4uf(qjs placed inside a uniform electric field,cu(i8j (d4u qpz45stf 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 carries a charge of +2.2x8y wqo4y ekmkp,i :u1xp-: u0 mC. What is the magnitude of the epo k xu -4 wyp1muk8x,iq:ye:2lectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 o7flx w (;da-:8.ypnl vxa5 md3vjm1qcm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the c (-38l7v5x qav:fd mwj;dnpoxl1am y. enter of the sphere?