State the law of conservation of electric chargeq jhomiji5,9e 2 x:k8sjpnq* ;.

  Is it possible for two negat2 hvk0qny3gc4 ive charges to attract each other?

  Is it possible for a positive3sxzijf qvb (g2 yym.e488 bq, and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the t9zz9 9g;ips n9bmzk+ q6*nuhprocess the glass rod acquires a posithmk6i szg zu9n+99p*t;q zb9nive charge and the silk

  A proton carries a

  The model of the atom shm 1jlz9tane5qq31d cu8* :idz0 . ufw*kgzl 9qows a

  A neutral atom always h+2:.o k7hsy wbhs5e4acssq; das

  An atom has more electrons than prvwc+a(h y. 0cxotons. The atom is

  Materials in which the electrons are bound very tightly to tk3d nxntk;jpuiq 1 3+y6w7ny30*e /lucdts * ehe nuclei are referred to ytjle* * ;nt0 33ydwpnedsqkuc/ ik un+3 617xas

  Materials in which tjm ,l34ds- 7-iknlyzkhe electrons are bound very loosely to the nuclei and can moz 4li-y3 ,ksnjdk l-7mve about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Thene7vco9v+k vxbs 65,t end toe+6cxv9s7 5n k,vvbof the metal bar farthest from the charged rod will be charged

  Sphere A carries a net posit5xyt x+aq xyxo(7an: z z3r--xive charge, and sphere B is neutral. They are placed near each other on an insulatz- az:(yt5xr+na3xyxx7 q - xoed table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope pos4qg/ ,1d jp6sesi -ahmitively?

  An originally neutral electroscope is briefly touched with a positivelie+k 65 mo*x 9)/zxng8g6q* syrnouviy charged glass rod. The electroscop*y5*nziv6g o9sien okrgq)m+x x/6 u8e

  An originally neutral electrwr9ep)5 wsokj v3x3s4oscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the elw9sv p)j4 er3sowxk35ectroscope

  A positive object touches a neutral electroscope, and the le )jjwoi7:sevhl48x p1 aves separate. Then a negative object is brought near the electroscope, but does not touch it l 7opvjwe1hj84s)ix: . What happens to the leaves?

  A large negatively charged object is placed on an insulated 5df:/:cpk mor 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 kmfc: pr/:od5 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 Couk i2qy0,tx b 8hq7rv.pjz h9(xlomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by ar/ ;)jri v 1z7mtsh)f q/r2hnd distance d. The first charge is larger in m7d )tz) vrr;s /rhj2mq /fn1ihagnitude than the second charge.

  Sphere A carries a net charge and suhds+n+m 3 7tikc1;rrphere B is neutral. They are placed near each other on an insulated table. Which statement best describe7dn sh i3+c+m 1;urtkrs the electrostatic force between them?

  Two charged objects attrac3 xidfvgi ;0 2ynigk,9qen ;07huh1vkt each other with a certain force. If the charges on both objects are doubled with no change in separation,vi ghne 71xud ,0kgvi;9q2fh3 0y ni;k the force between them

  Two charges are separated by a distance d and exert me3ft:+0hp qb/o2xiz zutual attractive forces of F on each other. If the charges are separated by a dis2+0xe hbz3i /f :otzqptance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a fodg ykz/5 2)239l:2fskmi hiwpcqjw2 grce F. What happens to the force between them if one charge is doubled, the other cha2y ipg:32)hzd5w/kil 2q w2fmj9gcksrge 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 separated b1ymgpq 0nhiregn l3 38 57cp24spte- xy a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next3 7psyne xlhgt83ieqmr- 52p14pc ng 0 to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. W30wocrtc xzx6/ 4/sy+2p7gw1w/h xvp nft7n dhat happens to the magnit xxf n3wxts/6 d ypgphc0 1zvwo/ 2n4+rc7w/7tude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a7o/a;n+ n xccn distance of 1.0 m. What happens to the size of the force on the proton+;a7no/n cnxc if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at thh xt*-ed.7nlge 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'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 *g 7e-xdl.nthsquare?

  A point charge of +Q is placed at tfe y-5 o(ja whi+(e3x qwa,:s;kh/lduhe centroid of an equilateral triangle. When a sec(:- j/qh lw +ak;( ie5e wdoxuhya3,fsond 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?

  Which of the following is not-szk+6oz x*0q- szyxmq7kk 8i a vector?

  At twice the distancqu5gen f,qk6* e from a point charge, the strength of the electric field

  Is it possible to have a zero eln ogj zg9u-9 (n.vpoe0x:se)xectric field value between a negative and positive charge along the lin.)9zu:jn(o 9vxg e g- os0enpxe joining the two charges?

  Is it possible to have a zero electric field value between two positive cbz9czmkl7 ):az (;spzharges 9la7b)zk;z cps :mz(zalong the line joining the two charges?

  Electric field lines nearmr c*f( k5 qoz4l/i.r )+swv x4.v,dc qvclr/d psitive point charges

  The electric field saqg+8kqumv 5tb;n.1j hown

  Can electric field lines intersect in free space?3 tlpoac 00-ee

  A solid block of metal in electrostatic equilibrium is placed f 0lzs94hoh:+ d5u9eolmu( tp in a uniform electric field. Give a statement concerning the electric field in the block'su + zlhu:9d0lps5m9( h4 otfeo interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters nmic;9.;lyji are each given the same charge, the ly9mi icjn;;.electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in 0pzevbe/wwiib5 213z a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's ww/z2i5 v3 i1e 0bzpebtop surface?

  If a conductor is in electrostatic equilibrium near an electric char,1zdbic tad-o) wj7*bge

  A positive point charge is enclosed in a n z1cns.u2:uchollow metallic sphere that is grounded. As compared to thecsu. c12 z:nnu case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors i:gr3r;a9h pn mn static equilibrium.

State Gauss's law.

  The charge carried by one electron is i7h2u wjwu ;lmwl/yajn(z w 68 9j6mn,$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2.+-;t(9nepgcw3iqp v l00 mC. How many more protons than electrons does this wvpetpc(i9+ 3;nl -gqpiece of plastic have?

  What is the charge on 1 kg of proton(in tt/:gqd5s s?

  An atomic nucleus has a cy7qs8.w6fu 6qzfeo f -harge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by zokd-1d+ t;gfii f)s g/b4h-c1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is thedg4i/os fz 1+-bh;di)kgtc- f 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 1.0rfx6-+gl+ s039 pddtdfh b(xm N. What+stfgxdp(+r6hb m0d-x 39f dl is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart aromu uog3/6oa+8.dtd g y)va )fe they?

  The force between a avwu ,7./.gq .e.vfvbnm + cpf$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, init.3 gkhic-x t.kially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electricig. kht3xc-.k force between them?

  Three identical point charges of 2.0 mC akfkdedosr*067 w*f/ mre 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 magnitude and directke*0*r 7dw/6os kffm dion of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of -yzp b lxiie 032dc*y4xmrg:5* u) fdb+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 electrosi4 y b 0 m)f23-5zxr:yucpelbid*dg*xtatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = wor*mmz6r 7:j2fzz/ t2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5r:zzm6 j/2o* zrmt7 fw.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the cea d(4lr0d2 1 ucrdyu(mnter 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 d d ru(cra4m0(1ylud2N 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, w9izf541hm; fk7v bux5+mhks 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude iwmzx u5sf5 9v+1; k4k7m hfbhof the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0/kr ;34 end/ oaypgu8y.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is taod r;3u/pek 4yn g/8yhe 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 equilater(iujq a/hov zd/ ceq.zov5ex .424y:e al triangle which measures 30 cm od :ajqxe.4ezv5u/c2 eiho4z (o. vq/yn 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,d ahocb :hn aw+v/.ptj g515a- 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 p/c t+1g a5 aja.w:nvo5dh bh-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* eop*2xw, o/f .dtpgf m. Where on the x-axis can a third charge be placeepdof,*2g/ pw*xtf.od so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x =s-z6+b/iuvimy:ogqhn ** k4j 2a. Where can a third positive charge +q be placed so that the force on it is zero? j/ qviobu4k*zmyhn6*g-i +s :

  A copper penny has a mass of 3.0 g. A total+)bn j*-prbc:.koeu o 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 again ipn*uue::td 2st the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is u:ie2t* :u ndpthe proton?

  Two 0.20-g metal spheres are h8k k:gfay ij-ole/9 w8ung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forcesjy8kof : l -/e9kwa8gi 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 the magnitudp6+m.le51qpgp, y pkbe of the electric field at a distance of .eq +1 lp pkbpp5mg6y,1.0 m from the nucleus?

  What are the magnitude and direction of the elec2j oi/v+j )f(dexd3 rstric field at a distance of 1.50 m from a 50.+jd)drev( fji o3s/2x0-nC charge?

  A 5.0-C charge is 10 m from a small test o(x g+y-( cso:q,kkeicharge. What is the magnitude of the electric field at the location of thc xoekosgy: ik q-,((+e test charge?

  A 5.0-C charge is 10 m from a small test charge.3 cbas,pzt o6 :;vt.on What is the direction of the electric fiel3a.nzc sotb v ;:,tp6od?

  A 5.0-C charge is 10 m from a mk,h,r 9(nglpn8bb9, v2 w rym1a 4ozusmall test charge. What is the magnitude of the force exalph8g 21,k 99z rvwnm b,nbru(o4,ymperienced 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 are separatapho t.xpgt0owmh ,( c 7( ozm.ig9a::ed by a distance of 4.0 m. What is the electric field atah( gz0pc::wi(tg ,apom 7x9 o.m ho.t a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick ax 0pcpb*y.f 4pnd a -4.0 mC charge is placed at the 50 cm mark. What is the electric fiel 4pbfyp0pc.x* d at the 30 cm mark?

  A 5.0-mC charge is placed at3ly5a*ecubll 0 :jo1s the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm maroc3a*u ble:lls 1 05yjk. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.yur , a16tk-ue0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitueuur6ky1t, -a de of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of 47zp*b ka6oj dside 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the centdba*z6po47j ker of the square.

  Consider a square which is 1.0a9d1nz-04 0 c e2rrwy oaq.kb;kikc7u m on a side. Charges are placed at the corners of the square as follows: z2;k.ok0a- nr7 ica 4cuywdq0e91k rb+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 the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is plach 5;-kz; qybd/nw6crw ed in a uniform electric field. What is the magnitude of this electric fi z5c w ;qhwyd6-n/bkr;eld?

  A particle with a charge ofwv, aod6mb2g-x ppu8:uwy 2x : 4.0 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 gh lhk -ojf(ht 2+.m.eg is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspended ohljem.-h h+ tf.(2gk?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball x rhh ubtj7mdo8u-q8,av(j2 + 5xe1sais placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and directioatvma7b+-sruh18dje 2qo,uxx8jh 5 (n of the electric field?

  A metal sphere of radius 10 cm carries a chargehia 0 szr8(df9 of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's sua8 zrs 9dh0if(rface?

  A metal sphere of radius 2.0 cm carries a 3dceog*3tl ( rcharge of 3.0 mC. What is the electric fier*c33 l(dgo etld 6.0 cm from the center of the sphere?