State the law of conservat jo h+:( xapkua i0 by 3avi,h(e.88)*dwbdolwion of electric charge.

  Is it possible for two negative s)gs(q45u0wuhhbu 0z charges to attract each other?

  Is it possible for a positive and a negative charge to attracd2p4ysqo5gc)ogm08shs u c b/bs u1)2t each other?

  A glass rod is rubbed with a piece of silk. During the pro8ln9 myl7wzzmdw k6 7)cess the glass rod acquires a positive charge and the8nl)m9 ym kw7d7w6lzz silk

  A proton carries a

  The model of the atom o )cn 1bx9mov/shows a

  A neutral atom always a1a.b,ni eh4jhas

  An atom has more electrons: wkbn ,1cgl6j than protons. The atom is

  Materials in which the electrons are bound very tightly to the nucl ,dw i3jo0a0clh:u nv*ei are referred toociwuh0 dnvj:, 03 *la as

  Materials in which the electrons are bound very loosely to the nuclei ay5,z3c 6lu 7e0s,:tffh dn wbdnd can move about freely within the material are refndcwe z 6s5ld7f,b3u,ty :fh0erred to as

  A negatively charged 8ogrh78qju0 urod is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged hu uq gj870r8orod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They at3 )6fv +mmekkre placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounkvt 3e6)+k mfmded. Which statement is correct?

  How can a negatively iu d6u 63t)drn2 xj+ g(rku)qacharged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a po,;5lr9gjgc9mm()l nzbo :lxz sitively charged glass rod. T;99l,gblz )n g:r mc(jz x5omlhe electroscope

  An originally neutral electroscope is grounded briefly while a pokct a )s24hao(sitively charged glco) tha4k2as(ass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral elr 7nbbf150c flectroscope, and the leaves separate. Then a negative object is brought near the electrosc1b5n f7b0 lfrcope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutrfnb1p buo3j4: al metallic ball rolls straight toward the object, but stops before it touches it. A second neutfp1bb3 u:j4noral 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 +kr i;.i(t ximthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chabiac5z 7,:k9 p iq/mibbjq2 q3rge is larger in magnitude than the /pb 5ij icqqab3zm,bqi92 7k :second charge.

  Sphere A carries a net charge ang k1)mfbst 37bd sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic m7bb3sgkf1)t force between them?

  Two charged objects attract each other with a ct6 rtydalyl1y+r .0 1rertain force. If the charges on both objects are doubled with no change in separation, y1tr01+l ly r6yd .artthe force between them

  Two charges are separated by a distance d and exert r6uiqp cr:ql1;(n5slmi b )9jmutual attractive forces of F on each other. If the charges are ser: ilp;l)juq i91(6q rbmsc5nparated by a distance of d/3, what are the new mutual forces?

  Two charged objects vq nu4zh7ob h:4ccjyhf )9us+li + ,1cattract each other with a force F. What happens to the force between thej) 7s+ivfh, c9c:41 chu +qozhn ulby4m 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 equal to

  An electron and a proton are separate+fkii0a ,2tml d by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first elea+iik2 fl,t 0mctron?

  An electron and a proton 5p/abv38;wq cvhxys,are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is plaw / vahvp;,bqc53ysx8ced next to the proton?

  An electron and a proton are separated by a distance of rd ywdinok8bk+ pa/w2 /88.pt 1.0 m. What happens to thekd a8.oy /bkp 8t/w82d+nriwp size of 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. ci:*uim2ee+xfbg2avc *,u p)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 electrostatic force actce i+e2u*vb,c:2pf) a x*imuging on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of 42ymr xda. gknp(4a8l an equilateral triangle. When a second charge of +Q is placed at o4l m2xg(yard4 8kpa .nne 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 ve .x)f egyswf25 db du7axw9v+:ctor?

  At twice the distance from a point charge, the strength of the electri1 u(3 )oet7uh5; r(fw gr9hzjd:ruvshc field

  Is it possible to have a zero electric field value between a neg,-/i nug suo)sative and positive charge along the line jun-,iu ss)g/ ooining the two charges?

  Is it possible to have a zero electric field vas;x4)na .byx;:pq hrhlue between two positive charges alqn s;y 4xr :x;phah.)bong the line joining the two charges?

  Electric field lines near psitive point ch4ljv+hi m/d2om,o5 sdarges

  The electric field s)lhkq0)p y.n3qrk6y x hown

  Can electric field lmhlg iv liix2 07zx155o 6q)9cml)mumines intersect in free space?

  A solid block of metal in electrostatic equi 1zzp29 dv9gtelibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block2tz v9pzed1 g9's interior.

  If a solid metal sphere and a hollow metal sphere of eqlt-p0 kag3 y)ypi923pqzmn9m4x z/hrual diameters are each given the same charge, the electric field (E) m)/9l0 iyznpxa9mrhpzyk-32 g4p mq3 tidway between the center and the surface is

  A cubic block of aluminum rw; . m )sykcjx3okp3+dests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concer c ;m.o+3p)ky kwsxdj3ning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elebdjec,2f,k .-d8 czhzctric charge

  A positive point charge is e/25h :a3 h2ivkni(-5s(ymv l atspaeunclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directlyik/(5 s53(:hsl2ta nvea phmai2vu-y above the hollow sphere has

State three properties of conductors in static equilitl 7ob8i)qy: 2mak(hnbrium.

State Gauss's law.

  The charge carried by one elect) )l: yisei*p8sclpsz d3ys,r6 (znb ;ron 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 has63t )db9ew qoy a net charge of +2.00 mC. How many more protons than electro) 9y3tebdw 6qons does this piece of plastic have?

  What is the charge ony ki5m x-tbb3;-xjyea8q626vek ,aha 1 kg of protons?

  An atomic nucleus has ao9zi l;9i dv0n2kwnl wg4v)e* 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 and -4.0 mC, ws yx5e(v- 6q,qu) c52gba7yncxtrv4respectively. What is the magnitude of the electric force betwnr vyx (yqa-t6b5gq) ec 2, uv7s4c5xween them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 Njj 7c rg94xuw :pl:q4x. What is the magnitude of the s7jg wqxr4j 9: 4cxul:pecond charge?

  Two 1.0-C charges have a force between them yg.yfadqr)dh8,0f(uixm(7 /sr v+ b z of 1.0 N. How far apart are they?

  The force between a m ztw o2(2o4h;c o;cmv$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expa;ec0xt d. p/jj69te,fv)i u merience a 1.0-N force. If they are moved to a new sj, teuaiej)60xpdt;v/. m9f ceparation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mg y h-76*6lusz 9pp+ ehtxru2cC 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-urzpc t 76egh*plux6h9+sy2 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 +2w )tzh/ 0d6y -wryipl8.0 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 yhwiry 6-p8l z0td)w/ the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges arei n4yejf)he( bp4z m(1 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 magni41)em4hpe j ifbn y((ztude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second poinm- wbm04ghtt 6t charge of -Q is placed at g-t0m t 4bwhm6the 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 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); Q3 = *rg l7xxmeec( 0poo/a+ x17wrp;-zii 5.0 nC is at (0, 0). What is the magnitude of the 77 *(cwaz0moex;xl-i+ 1exrgp /i rponet 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); Q(tkq-x z7 n 8rt,oes/t3 = 5.0 nC is at (0, 0). What is the direction of the net foe(x 7tstr,o8knt/q z -rce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vxe,jms mg+ 7,tertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the etx mmsj7g,,e +lectrostatic force which acts on any one of the charges?

  Consider point chargeiv 0ec 8/:kalas of +Q and +4Q, which are separated by 3.0 m. At what point, on a line vci l:8/ka a0ebetween the two charges, would 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 the origin and a +9.0-C charge is at x = 4.0 m. n5o +,2o 4clfdyg(ldp,fpvv9 Where on the x-axis can a third charge be placed so the net fopo pv(gdv,l n5 yf,29dc4f l+orce on it is zero?

  Charge +2q is placed at the origin and charge -q is pla /:m;ankhp (4+ymghhh ced at x = 2a. Where can a third positive charge +q be placed so that the force on it is zeroh(p ;gyn mmh+4khh:a/?

  A copper penny has a mass of 3.0 g. A 1b u)dtenx o ;y*ycq3atqi1 (2total 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 fixe/qf nc8/t:iu hsw /p8kd proton some distance above it. How far above the electron is thek f//8wcnu:/its hpq8 proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductism msb3v3 m*rxh( qf2hk e;c8;de5dk1 ng threads which are 30 cm long.( fd 3k2reb dv*8c;mks3hq5e smh1xm; 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 ,lbff(v rq , -dp6+xtfa charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from th prbff+6 fq(,- dtlvx,e nucleus?

  What are the magnitude and direction of the electric fier+ zly1*mnma d rcm40kunh514ld at a distance of 1.50 m from a 50.0-nC d54rac *mzu+1n h401 kmmryln charge?

  A 5.0-C charge is 10 m from a :4 srgo2+ z*ne.)lki 84khrkqokbd 0c small test charge. What is the magnitude of the electric field at the locatio4kei*kq r4+:co k zbklog) h0nsr28d.n of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is th4ud/5jdl7:bvtqhf3d r- s(l i e direction of the electli3 j-qddh:5/u tv b7s4 (fdlrric field?

  A 5.0-C charge is 10 g ;b85ys8eq 1 mn4vmzkm from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge p8by ; gzk1msv4m eq58nlaced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separat sq*v :59.riuo,avwuoed by a distance of 4.0 m. What is the electric field at a point midway soo,5vq*a:ui uvw9r . between the two charges?

  A 5.0-mC charge is p1re 8o-3oyqmg laced 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 field1r3 oq8ygo-me at the 30 cm mark?

  A 5.0-mC charge is platr.)bn ev( o zvs0a6a:ced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm ma)rv 6 t( .o:basv0azenrk. 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 mCd fku m;:9q.rf are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between the9f.q m; fud:krm?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Theuhu: u31fqrr7 last corner is occu:qrr3 7u 1ufhupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0l h 2b5h h5srt-epaar isr, )*mkz*n*6 m 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 l 2s6i5*hb-ehr *hnrkr* aamz5,ts ) pthe 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 nv8w:enhiw5 4 uniform electric field. What is the magnitude of this electriw5nne 4v 8hi:wc field?

  A particle with a charge of 4.0 mC has p7c4kejgw4p3a 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 b/u9s8f 1la woata/ e66000 N/C pointing downward. What chlof/esu 8a tw/69ba a1arge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a ;nm+ a :ggpfv-xtt60 mcharge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What+;: - 0 gmpnmgxta6vtf are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge qquy42ml3oo:- cw w.pm*bxn - of +2.0 mC. What is the magnitude of the electm:o qxlp3wncq y.2u-w-*bm4oric field 5.0 cm from the sphere's surface?

  A metal sphere of radius wr3e h3h he2o9pqpt 742.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the spherehpphoew432t hq3 re 79?