State the law of cons-x-ub j uhj)rp.sl.zr7k,s 9ssjj- o:ervation of electric charge.

  Is it possible for two negatidq- s .qy.n)ken8;ixa f/du .bve charges to attract each other?

  Is it possible for a positive and ad(ls: n) z l*facz+barn6v*m+ negative charge to attract each other?

  A glass rod is rubbed with a piecemq r- t0.+kisq exi . yb(4o6n0pgu;lf of silk. During the process the glass rod acquires a positive charge and the sils4m g0 kn;0e pqby- rq i(u..xt6oi+lfk

  A proton carries a

  The model of the atom 7 s5bb 8m9j v;d lyxiuv(1k,mwbrlv81shows a

  A neutral atom always4b3whw iy7*1m.u kkth has

  An atom has more electrons than protons. T14 d1/o kss23tnonao che atom is

  Materials in which theqj)g a0soz-,+3ezr0t ut a)j n electrons are bound very tightly to the nuclei are referred to a)sjnr o -g+t03at0q)az,eu jz s

  Materials in which the electrons are bound very loosely to the nucl,) fnpp s )lxeoe 8,ke/fok2:gei and can move about freely within s8gp,,f oeoen el:k p /k2fx))the material are referred to as

  A negatively charged rod is brought near one end of an uncharged qhuxx81 orloqa1 (-8h metal bar. The end of the metal bar farthest from the chax ra8u xhl1(h8oq-1 qorged rod will be charged

  Sphere A carries a net ta*p7u9j fqq h7h 1sa19qvnu8 positive charge, and sphere B is neutral. They are placed near each other on an insulated ta9qh hpsfq7 q 8juav1an19 tu7*ble. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged d v/h4)uyek4s rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargedo(i )6 2yf*)jbdtmrxe glatxb))j6y2mf dier* o (ss rod. The electroscope

  An originally neutral electroscope is grounded briefly whi ccb(guq4owib7i0 e 5lhq8*e(le a positively charged glass rod is held near it. After the glass rod is removed, the elecglbiq(u84cc*w0heo7 ei q5 b (troscope

  A positive object touches a neutral elek f ;*5ghu3:te ezsb 6rd69e)jtdy t7r9hv1 drctroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happv 6u 6zbth) ttyfe 5;71dr3j:her*ddk9r9g esens to the leaves?

  A large negatively charged object is placed on 82zmc4buy iu0an 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 ball rolls forward, but does not touch the negative object. At no time does either ball touch the ni8 4uy20 cbmuzegative object. What is the final charge on each ball?

  Charge is

  What are the units of the3ju.mdi5c kri)0( j pm Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger sv-m fs0s 81ncp:hfx(in mag0m1snpfc fsvh8sx -:(nitude than the second charge.

  Sphere A carries a net charge and sphere B is neutu/q3bxc 25s voral. They are placed near each other on an insulated table. Which statement best describes the electros/b5 2uqxo3csv tatic force between them?

  Two charged objects attract each other with a certain force. If the charges ozq2qvt*w- jq, n both objects are doubled with no change in separatvt2*z qj, qqw-ion, the force between them

  Two charges are separated by a distance d and exert mutual attractive f1p husi1 pe tjli781:morces of F on each other. h:p8mlp117ituis1ej If the 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. Whas52 :7bu omc7e/tey9bin u:cc t happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance bet2be9cs:uuo/ty i7cb5n :e7cm ween 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 halck v)3yx(ww 0)vwb3t 8q p(ggppens to the magnitude of the force on the proton if a second elect0v(g)3t wxk wq(bwp vl38c yg)ron is placed next to the first electron?

  An electron and a proton are separated bb2o il5 z .k/jq6rh4vaql6)nzy a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next tb/5q. qlkij6n 4zh z2r)6vo lao the proton?

  An electron and a proton are separated by (-olzehnc0t dhl;g51 ,anj-p a distance of 1.0 m. What happens to the size of the force on the proton if the elg1eh-jn,hltd(-p5a zol;0n cectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When 8s7 9)ug pmn5pwm)dle h)lln-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. Whatll5-mw7npu)h9 )8ed sg mln)p 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 equila g5lg;)6fbrj steral 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 magnitude of the force that acts on the center charge due to a third charge of +Q placed fgsl;bg5r)j6 at one of the other vertices?

  Which of the following is not a vecvdd+n;gr m+vd 7 du:w6tor?

  At twice the distance from a point charge, the strength of the elecoo j63n0s+jnstric field

  Is it possible to have a zero electric 1 q2dg+g t kqmrlg3.o5field value between a negative and positive charge a2kml5qd1g tgg rq3.o+long the line joining the two charges?

  Is it possible to have a zero electric field value between two positl9;aaqre. ys:ive charges along the line joining the two chqe ay s9ra;l.:arges?

  Electric field lines near psitive r xhla61 b da6u9eo-p)point charges

  The electric field show b8y1vr.1wqmj ju3/ztn

  Can electric field linegxn4p imhy *z,2)ai 9as intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed iw7f *4 0nf1jul gtolb+n a uniform electric field. Give a statement concerning the electric field in the block's inter+ l uogt4*bw7n1 fj0lfior.

  If a solid metal sphere and2/kz3g5zpgbnem j;k0 a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface m ej /npkg0; gk3bz2z5is

  A cubic block of alum;auu k 08,ndtdinum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the blon8,d0 u;uadtk ck's top surface?

  If a conductor is in electrostatic equilibrium net08 m:arq*r n/ ;wti0 fpblp+ear an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundedzeb (9sfu.* rx. As compared to the case without the hollow sphere, the e sb eu*.9x(zfrlectric field at a point directly above the hollow sphere has

State three properties of conductors ,(mt0n cf:+nc4 l 4wyt(gkg nfin static equilibrium.

State Gauss's law.

  The charge carried by one electrqexp+5e5e( / nob1vs yelsk 1/on 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 ws4l9 *kr;nc enet charge of +2.00 mC. How many more protons than electrons does this pieske9l4 ;nc w*rce of plastic have?

  What is the charge on 1 kg of pj*uqg) bep k1)u(e.wm ide(x*rotons?

  An atomic nucleus has a charge of6 jnq-jl77dm ffp,zs3x. 4mjh $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separateduz6 w6zvc qqh)3q -j47(ig sle by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. qhwc qv6 (j zlg6sue)7-q3i4 zWhat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a 0lj6s iijf1 b.second charge, and the force between them is 1.0 N. What is the magnitude of the secondfj bi0jl1i6s. charge?

  Two 1.0-C charges have a force between them of 1.0 N,4waqf) hb69 spu wyvs)(8dw n. How far apart are they?

  The force between a p/ kctrl)n qgh) 8u8:m$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 (fghm 3 ivr8pv:/nh4 h (l*kgmcm apart, experience a 1.0-N force. If they areh8mi( fgh (k3p*4 rv :lg/nmhv moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the v;ptm 16(dklc x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is acl;d1p6 (tk mvt 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 ch) weaoi9 xh6pc-b 9ksg4o:jr-arge 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 magnitude and direction of t4 s i-:) 96e9gjo-rchxokba pwhe electrostatic force which acts on the charge at the origin?

  Three point charges ar( mg/dcc1a6f2v 2bysp e located at the 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 ofp2( cb1/d6aysm 2fvcg the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point ch.a0dn**o :,a,rs ft(uoyhnfi a87blfe 0qz4b arge 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. f,,deabq7*8:( tr4hfn a*o0n.bfuo0yiz sl aWhat 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 = -1.0 nC is atzxq7g r*)-yrq9osd3-kiiz k9 (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What isdok xizis37 -r9ky *g9-q)qzr the magnitude of the net 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 gv:jur8mo5:nc q:3,ml knrb* m); Q3 = 5.0 nC is at (0, 0). What is j uvb:l: 38nnqromk m,gc *5:rthe direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of ah +vxia3 u2g;hn equilateral triangle which measures 30 cm o+hvgha ;2 xu3in 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. At whatf 5wtxc* hyv16 point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it woulvfy5h wct 1x6*d be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 i)zpfa4cy4 0im. Where on the x-axis can a third 4zpa f4c y0i)icharge 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.0iv8sm0.h(i1cify cd Where can a third positiv.8vfici10iychd(m s 0e charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A kaiw6h ;bj- z;./hrw ftotal 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 fixx q6g0+dciucs+- hw i:td+7a led p+a x hgqt60u:isdclic+- 7w+ droton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common poi rt 6)fs:ltodjk0.mn-/ok6 3h odscr3nt by nonconducting threads which are 30 cm klrs3 fo6h 0otc:.to/d-rn6sjkmd)3 long. Both 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. What is mq.9*jl7+z)phg kca:gvs ; 8p+zjl ptthe magnitude of the electric field at a distance of 1.0 m from thej lg vpsc :laz7k+zj;+).9 pg*hm8q pt nucleus?

  What are the magnitude and direction of the electric fie e1p)f iv 5r :.xafqqs7.;gmqald at a distance of 1.50 m from a 50.0-nC charge?rxa 5q: mg)7v ;qf.1asfqiep.

  A 5.0-C charge is 10 m from a small test chargeezh(/ ik nh-(e. What is the magnitude of the electric(zekhin-/ eh ( field at the location of the test charge?

  A 5.0-C charge is 10 m from a small tedzhy6p)aok7, i a j5*69b,o so4r gxjpst charge. What is the direction of the electric f,*, 7ix 6op4yjagpohkrjs ad5)6zbo 9ield?

  A 5.0-C charge is 10 m nsv 9s hnfjhjg.45-9f1axr w ,from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge place4jfh99 vgh.xn- r5asf,jswn1 d at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a d+/kx. +-pogjbk )ln ioile*m /istance of 4.0 m. What is the electric fikgb mol/lxino) ji p++.e k/-*eld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and.jg k:pt66 n oi xj86*uvweteo(2 kso, a -4.0 mC charge is placed at the 50 cm marjj6po 6vt6* e:k8,gex.o(tusikow n2k. 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 8s4ef; scr vlq h:3(wx-4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fs4r l8shw:exvq ;f3 c(ield zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = +wj7o*pgzwz.h64fqo 0.20 m. What is the magnitude of the electric field at the point midway betweeq+64joz gfzp 7 .w*owhn them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The+:0vtv2bg uyg v eo96(u7e pnm last cornu2t(bemp9go :+ev y7 0u6 vvgner 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 mg- k-t(rd z6wjw bpyvjs;4) ckrb +6m/lvcf34 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 thev3jwzwr+s4(4 ly t;6r)kg/pjmb-- 6c kcbfdv 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 af-z 0 +/qbals zy:fkl; uniform electric field. zbz/fy-+ qlk0a; sl f:What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC h mq.7z39mg2un qleg+vas 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 600b/ph v5 ld6re+0 N/C poin+ 6b/5dve lprhting downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrie1by( 39z mkimydp cv9+s 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 direction of the 3cki 9p9ydmz y(m1b v+electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magn to)syx*kcyyd jy(yx++s09g1 itude of the electys1y tx0yjs x9*gkyy(++d oc)ric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.m9o(0,p2 4zayxo lb.x pmgy-bzw d ,g60 mC. What is the electric f y-4b p,(o lzm2ax.z6gmxb0w9op,y gdield 6.0 cm from the center of the sphere?