State the law of conservation of electric2;mm4mwcmhcm9cx/3w charge.

  Is it possible for two negative charges02rahl(2ltn04 zuwlgmgi, hh 6aiy18 to attract each other?

  Is it possible for a positive and au8flc3o tte3yl-vaaf. 2+;j v negative charge to attract each other?

  A glass rod is rubbed with a pi3agy25hq6 iy aece of silk. During the process the glass rod acquires a positive charge and63a yqiya52gh the silk

  A proton carries a

  The model of the atom shows ke6i9lt l3zb* f*as s8a

  A neutral atom always hasj+bp -/r dqr f168ibyn

  An atom has more electrons than proton(k:bggwes x*/rp)-u0cq 9kg+ un6rhn s. The atom is

  Materials in which the electrons5na gx6jwie :s.)mx- f are bound very tightly to the nuclei are referred a ixx:mfg-56e) wj.nsto as

  Materials in which the electrons are bound very loosely to the.a huf +lka/b-fs*- io nuclei and can move about freely wita u/-fa+hb-. ki* solfhin the material are referred to as

  A negatively charged rl3m3y1g3 ,vkra 51 ,,mzqm etnx3gevhod is brought near one end of an uncharged metal bar. The end of the metal bar farthesxzmnq333, tev r,y 51klehg,a1g3mm vt from the charged rod will be charged

  Sphere A carries a net positive chargec-p av,img pcfht1 p ;z(d0u;/, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is corre/-v;c( uzppi mtaf,p;g1cd0hct?

  How can a negatively cha u(nl04g1dq 2ntdu1mq rged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a pok/.6 9bj3lk s5hqaxm +s2vfd vsitively charged glass rod. The electroscopek kv5.m/jsf9 sv+daxb2hql6 3

  An originally neutral electqkn0u*5u ( atwroscope is grounded briefly while a positively charged gla wu0qu a(5nk*tss rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, vlmvjgw ca49+::q3vi +xkbv ;and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leavab +vx3ij9c 4k;+lmvg wv ::qves?

  A large negatively charged object is placed on an insulated i-dz3om/ nf8ttable. 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 fifzt/8dn3 iom-rst 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 :/ 4 x8e2jvfrxbz5yrfthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by ar8,dp6k- q gntjdw-pra 8k:z) distance d. The first charge is larger in magnitude than the second chargekkd,-86z p pr gr-8djnq :wta).

  Sphere A carries a net charge l).; pje.wx 0u zhymzch-5h1*q pzi j e.)p1emand sphere B is neutral. They are placed near each other on an insulated table. Which c-5 .yj.ze)lhh zxj1p1m.h0 zu wqm;e)* pipestatement best describes the electrostatic force between them?

  Two charged objects attract e q caba3n ;y7wd4+p)jqach other with a certain force. If the charges on both objecpbqacy;3+n4 qa 7) jwdts are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mut 7x tsqywaz:9 n,guf5.l -lp0pual attractive forces of F on each other. If the p.079wn5 ,uztg :psxal qlf- ycharges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects a*(y v ye*h-;;sjvytnyttract 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 eq;nv-t( y*y*ehv ;y jsyual to

  An electron and a proton are separated by a distance ctc62rce hw): of 1.0 m. What happens to the magnitude oc2hc6 e)cwrt :f the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distao)n ij7o:z:tknce of 1.0 m. What happens to the magnitude of the force on the first elect)zokti on::7 jron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distanc4)g*g 3hbq*pl *d tm,r ha 8uular04qje of 1.0 m. What happens to *utl)04 gl*b*mau jqapq,rrhhd34g8the 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 f + qkmsntqqc vcq *2m.-q4(4qplaced at the center of a square. 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' sqm42(nq-.qc4k q+fq t mvq*cs 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 otdl78:g9j bfq,pfa v* f an equilateral triangle. When a second charge of +Q d8a,j :f b ft79gp*lvqis 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 ig a+;s.ir i(r0ku3bfv dd4wajn-+ 9s not a vector?

  At twice the distance from a point charge, 42kc09hs uf wnyi2cy ,the strength of the electric field

  Is it possible to have a zero electric field vaods ps;:+dx 9wlue between a negative and positive charge along the line joining the two cxo ;ds9s d:+pwharges?

  Is it possible to have a zero electric field vam jc2p)g1xn :k bc/p1d(h8mgu) * sweglue between two positive charges along bu gg)/kmce2g: j1whsc *pm8 (pdn1x)the line joining the two charges?

  Electric field lines near psitive point charg06xjr3 x /+:jbniwu anes

  The electric field shhjy/m )8 +cf :sfplu qr 8n9w5ri1pdw+own

  Can electric field lines intersect insnuwv 1mn)j+a3/ sj , 9b;sv y*axkj(n free space?

  A solid block of metal in electrostatic equilibrium is p;pc+) 0pl) r8t0 uydkhnd3xkjlaced in a uniform electric field. Give a statement concerning the electric field in the block's inpxdr8)3 0k)np+jyc ; d0 hluktterior.

  If a solid metal sphere and jndgco; www x5bq s56y7xg1 (3f.4tema hollow metal sphere of equal diameters are each given the same charge, the electric fieleg1 3mw75 f dx5 4xq. owyb6tcw(js;ngd (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region se dmx7tdd oz3i8r45)where a uniform electric field is diredmd zr4itxo83e57d )scted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an w n,046eocfc *sld5vk/, peadelectric charge

  A positive point charge is enclosed in a hollow metallic sphere that isw:y-c.n;/c. z a ugi1krllco * grounded. As compared to the case without the hollow sphere, the electric field at a./1ircc ;unlwgcy ok-la* z:. point directly above the hollow sphere has

State three properties of conductors in st 4lma-hflo+*2whp;v aatic equilibrium.

State Gauss's law.

  The charge carried by one electrofdcha nkxoo ;6r5+n q;7;jwj4n 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 protons than el.* om 4i i8stv9v;xtej+hx, ckectrons does t *tcv+i,;xjsme 9kto.vi8h4x his piece of plastic have?

  What is the charge on 1 kg of p yodec9aap2w-:cq zu,t +5i(zrotons?

  An atomic nucleus has a charge ofqtx*o86i tik; $+40e$. 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 an2a -( xccja*ald -4.0 mC, respect(-c2j aa*acxlively. 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 irsbr2-.t-fpr s 1.0 N. What is t fprrs b.t-2r-he magnitude of the second charge?

  Two 1.0-C charges have/uyi,o5 vdm:wm zm06 l a force between them of 1.0 N. How far apart are they?

  The force between a ,5 fk(kfudl /gq9m*rb$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initialu dfig,* + ,s)gqzv8kxly 2.0 cm apart, experience a 1.0-N force. If they are moved to agxuq,gfvk zs d*i,+)8 new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on theb02 ihvfy0(-tg+q ok t x-axis. The first charge is at the origin,i+ tyfh2qv (otg b0k0- 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. swgyo3t 0)z(lh oiu1e0mn9 d) 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 magnitude and direction of the electrostatic force which acts on the charge at the origin1lwh)0gmuzyd e( io)otn0 s93?

  Three point charges are located at the following positions: Q1 = 2.00 mC 8,70vk+ ; jssw 5hbzub cms3ssat 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 th0ss c+svm kbs5;szj83 ,ub w7he force on the 3.00-mC charge?

  A point charge of +Q is placed at the 2 rsmmgnp.(worvj,( 8g: )vvm center 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 thipm2(wnv.r)8go g vv mr:,msj(rd 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 qx*m0 :*n-lj dtyfum4 = 5.0 nC is at (0, 0). What-nl*umm j*dxfq:4yt 0 is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 =v itd9tlr tgax aq,6t/;;0i m/ -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What6 ixg,im9dtvat;lq /0 at;rt/ is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilaz7v)xkh crik5x0z, n -teral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic forcekxv -,ikzh5x0nr7 )cz which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whabi+xn *+gf:b et point, on a line between the two charges, would it be possible to place e ++bxf ib:ng*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. Where o; ,h sioc-f;zfn the x-axis can a th;,fh ic;o zfs-ird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -yo d4xr0.tauq.v* sx6rdd/ n/q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on0/r tu*. x.ryd dav4xd/on6s q it is zero?

  A copper penny has a m0 k3zpt8rly9bass of 3.0 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 the force of gravity by the attraction of al hsmhgtt3,kh4+fywt7 e n75 / fixed proton some distance above it. How far above the electron 7tklgnw+/ 3ys he4f,h5ht7mtis the proton?

  Two 0.20-g metal sphm48 qssff p +jiu4s78eky1da *)k ,hxneres are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart ma14dhj ,pqk7essx 4s8+)uf*8nk yif 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. Wha8aam rjpq+p-,xak/ 6o kpqk ,+t is the magnitude of the electric field at a distance of/k kjx 6+ mapp,pqka +qao,r-8 1.0 m from the nucleus?

  What are the magnitude and direction of thfym6o c aij0t6wol7rzzvm v+* :4bm(1e electric field at a distance of 1.50 m from a 50.0-mfbizcrvz0mj 4a671o v: w t*+m(lyo6nC charge?

  A 5.0-C charge is 10 m from )ceh y00:l( ztftphde xu-9/ba small test charge. What is the magnitude of the elecc 9 t uzf0p h:0(-/bdtxl)eyehtric field at the location of the test charge?

  A 5.0-C charge is 10 m frzx/y*ubok/6q(b wt 1e/ nccz, om a small test charge. What is the direction of the electr/cx* coz(e6 /nuqb/kbt z, wy1ic field?

  A 5.0-C charge is 10 m from a smalk m:0wss2pevz3mq8e*v5 . qffl test charge. What is the magnitude of the fq* 3v5 m fs:evz2 0.8spqemfkworce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and aretom8zgm ;w 9w: separated by a distance of 4.0 m. What is the electric field at tmo:wzwm9 g;8 a point midway between the two charges?

  A 5.0-mC charge is placed at the )z5z r(gb lrr a1rv br1 ag8us1ao6/q3)tt9py0 cm mark of a meter stick and a -4.0 mC charge is placed at t3b gl qrro atr yb8(rv1z1/56a9 a u)g1rz)psthe 50 cm mark. 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 sg 0whfua+t gh xy 5h,qmru35(tn30o 0ytick 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 emh0o05thug (n g35 ru3fx +whyy a,tq0lectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = u-(kl1wc5ny:l;wf 1-wlxho d ht t4c(0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between thn4:wfxu-1-1ldt; c( wy o5hh(ktcl wlem?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m.r52uw+z8fr o3;ye8g qrcf vh)7t0sne The last corner is occupied by a -3.0 mC charge. Find the el8 fr n2 qe7fgwy8 ecs3;zorh+0ruv)5 tectric field at the center of the square.

  Consider a square which is 1.0 m on a sidd + gw33(xn.0edc )o5ugjki7dkkokk4e. 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 t35gk+w 3k ek 7k x)cido u4k(odgdn0.jhe 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 p l5wins*qdruu8b 840 v4/hhpplaced in a uniform electric field. What is the magnitude of this electrhwp48s/0rq 4lnibu u*p58vhd ic field?

  A particle with a charge of 4.0 mC has a masbfj ih5*ob*g2 s 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 6000e lg-(- kacs9a N/C pointing downward. What chara (e-9-askgcl ge 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 nCrg1-km6r .clej btq9 /. The ball is placed inside a u.6tbcre g qml9r1/-j kniform electric field, 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 +2.0 mC. What is the may3dd68 khkz/g o1qm:: ))lv x9m awlqpgnitude of the electric z alk )lm/w1dxmqv69k)3qpd:yh:go8field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carrieg; t41 lomvod7r4m i- dvp4wg,s a charge of 3.0 mC. What is the electric field 6.0 cm from the cem gold,-4o44 1rpg;vim tw7dvnter of the sphere?