State the law of conservan 3bye 5plkbj/b0;j) bh65 bm.i r-wkution of electric charge.

  Is it possible for two negative cha nt55c.brh)1s1e q vwurges to attract each other?

  Is it possible for a t+ jmtb t)wki,,c ;xc. dmzw094fjk o+positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glasc put2t4i3o/sg,z).yj 6l xe ko 5/rncs rod acquires a posig2u,4 3 cs ty ionxz6o l)/ecj5p/rt.ktive charge and the silk

  A proton carries a

  The model of the atom shows ab( nsh 6qv-pyv op 2wo)7df ;.z)vf3ql

  A neutral atom always hasx8q1u.man 6a* 4b vfbd

  An atom has more electrons a xz02br ya7m7than protons. The atom is

  Materials in which the electrons are bound very tightly to the nc.,id v78ppy vejgyk2k)e9u .uclei are referred t.puv kpv c d7i.yjgek98) ye,2o as

  Materials in which the electrons 58fpdgmlc i 5.are bound very loosely to the nuclei and can move about freely within the material are ref.mdg 5cfp8i5lerred to as

  A negatively charged rod is brought near one end of an uncharged metal bar.osa)tjix:tkd j:n zh/j l4b/di 2 t75+ The end of the metal bar farn:xo j25b+tas)lj:iz djt/ihk/t 74dthest from the charged rod will be charged

  Sphere A carries a net positive charge, and spht ..9qyuux0prere B is neutral. They are placed near each o 0up. 9tqy.rxuther on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosaz . 87,jhts2+nmn,c a/me f2sivxv+fcope positively?

  An originally neutral dr-dzp p9 kz*3electroscope is briefly touched with a positively charged glass rod k z3pdzrd-p9*. The electroscope

  An originally neutral electroscope is grounded brietdj g8,j:cz 9qfly while a positively charged glass rod is heztjg,jc 98q :dld near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electn:512. z evcheioa5liroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does notilhoi n. 251ace :e5vz touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A n *y 4vv hx/*wc 1y p33waakncb4f+ze)heutral metallic ball rolls straight toward the object, but stops before it touches it. A secondykfxcw b3ypw4 e4* /+v)1 na*hh3z avc 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 negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constant p*f x.5 hko.n d3cqg3e$k$, which appears in Coulomb's law?

  Two charged objects are sepd3 yaqvw:se9 *arated by a distance d. The first charge is larger in magnitud3wqav9d es*y:e than the second charge.

  Sphere A carries a net charge and s5jytj;vx g0by g*in fnkg0dp8i6-9 -uphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostaticgvd j- *p5fgx89tn0n b-yuj;i6g 0yik force between them?

  Two charged objects attract each other with a certain force. If the charges klqk tu(69qiz6 s(5 w wzvhgrd(u(i ,-19rimion vuq- , 56td6gl9wzi9 kqu(iswh1i(rr i(mzk (both objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractif u8+u t0gtu(ive forces of F on each other. If the charges are separated by a distance of d/3, what are the n8uu (0utfigt+ ew mutual forces?

  Two charged objects attract each other with a fo w,okomy 3x-a,nwisvle /(4c, :)ft imrce F. What happens to the force between them if one charge is /xli m 3( -o,v )fmek4a:yww,octn si,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 protoo -qvr; 5-ciwgn are separated 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 ther- o5cw;q- vig first electron?

  An electron and a proton are separated by a mcw/k )lz, 6fjdistance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron ismj /c)fl zw,6k placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m.g zg 0ueu+*ev)v1g1rg i40* a zobjcs* What happens to the size of the force on the proton if the electron isz1004 1)b c+jziovvgsr**a gguge*u e moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squ3-ac bl0 :jmcaare. 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 squa-03jmcbl ac:a re?

  A point charge of +Q is placed at the centroid of an equiu9tz;x .40gsn7iehzflateral 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 nhset ; i.g7fx9u zz04the 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 vector?7pz4s2glll* b

  At twice the distance fr .n//gksmc 6yxg p0-mbk 3:xfx9wpma ,om a point charge, the strength of the electric field

  Is it possible to have a ze(m-b 5ef a0epvro electric field value between a negative and positive charge along the line joining the two cf- ep(a5be 0mvharges?

  Is it possible to have a zero electric field value between two positive c*ulvcs,792ssgh e d,fharges along the s 7,s*sd2u c9,hfveg lline joining the two charges?

  Electric field lines near psitive point char 0pse al,sc(7yges

  The electric field s e5a* y*y9au6; *bd/co zkxkf x:4kseahown

  Can electric field lines intersect in glj njp, 1ru e4k.xx -.z2f+8vsft-id free space?

  A solid block of metal in electrostatic equilibrium is hupm3 04ts fe-placed in a uniform electric field. Give a statement concerning 0mhpu4-t3s fethe electric field in the block's interior.

  If a solid metal sph qxt*lfk i*:z*,px (b+)kc t/b7zfrbm ere and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midwa*x bbz7ktrli,qb m )fzx *+kc*p/ ft(:y between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform en *cy8x2yqw w:lectric field is directed straight upward. What can be said con:2w* yyxcn 8qwcerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriu2 p1 wuipbv9n/bg-gc 3m near an electric charge

  A positive point charge is enclos:(jsqvj*() f f4 )uavxk m2vxsed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point direc(x vjqfsmvx)4)fkv: *2(s au jtly above the hollow sphere has

State three properties of conductors in statiocm-/ o:m hgz1p.qx;mh f7/tfc equilibrium.

State Gauss's law.

  The charge carried by oney20xfto4h. r6 1 mknu x*n1zzq electron 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 c7uk9(3;s s o8keo vqzkharge of +2.00 mC. How many more protons than electrons does this piece of plako3qsvszou (k k7; e98stic have?

  What is the charge on 1 jg/oyi tgfda6r5y-+ui5q 2-rkg of protons?

  An atomic nucleus has aao rmb mi35mdyc;h8/ + 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 o*,nmk50titck f 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force bet*nctki5t0 k, mween them?

  A 1.0-C charge is 15 m from qjknlkl,8d ep-2m (s0 26jmlh a second charge, and the force between them is 1.0 N. What is the man lk( 2-j0mlm6k,hel dj 8qps2gnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart arbpx+ ftj )l 1p. 15tknyk5q*pee they?

  The force between a bxpwz f3-c0x5$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm a2r+sraw+jzgh2 bbl) 0 part, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwezrlj a+b rh wbg+s22)0en them?

  Three identical point charges of 2.0 mC are placei lsro c6-g,h,f9iq1kd 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 directio,lho6- fi sr9, iqkcg1n of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.k6f2vh-(1 zz wztr ;du0 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 a z(zwkh- utf;162vdr zcts on the charge at the origin?

  Three point charges (g q),sak(rk ware located at the following positions: Q1 = 2.00 mC at x = 1.00 m;rak,sqk w)g(( Q2 = 3.00 mC at x = 0; Q3 = -5.00 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 center of a s64kkp:-p vr qwquare, 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 kr:qvp w -64pkthe 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 = 5.0 nC is akmvtx:y0-8 gnt (0, 0). What is the magnitude of the net forc0y:x-mtkg vn8e on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30aqia6wq s -* u6/2v9r/zcflgt m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5 al2-/w/izcas6 qqt6 r*fvu9g .0 nC charge?

  Three identical charges of 3.0 mC are placed at 21ywp/cs2 cxv4sawx .the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic for2pxs 4xa 2w/1s. cvcwyce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wha89-jvm8f g ,m rj9ptbst point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic m, bj88ms-prvt99fjg force acting on it would be zero?

  A +3.0-C charge is at w 09,y6 .atd/.xjlb z y8rgp 8ddfulh9the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the nj xalulhdr.g9 /,0dt9wzy8 .pyb8f d6et force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wherkl4vb23wy wp +e can a third posiy+wvpkw b24 3ltive charge +q be placed so that the force on it is zero?

  A copper penny has a mass ofsxp ;av(. o3r6xm)rp r5twc6s 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 xy-px867 c +gd0cg ntja fixed proton some distance above it. How far above the electron is t7 y8tpn6d- xjgx+ cgc0he proton?

  Two 0.20-g metal spheres are(+ ; ttuos-2 hn80bhq4j ntmon 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 until thjs4qn(t20m uhoont8nhb -+;te 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 thezfkr3 tp 2llbc c-pf3 yjesrd5*/v5+ms;8fn2 magnitude of the electric field at a disfkm*c2l zl p3d8cn;s3 + yrrbs e/jtf5p-f5 2vtance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distancepmhvv9sku1o,:pd mt4ee(1v6q i,t*c of 1.50 m f c q vk6,*1:,mept4sdt9 iem vh1uvop(rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small testj)fh qsk 9)h9jk+9f sgv8m c-a charge. What is the magnitude of the electric field at the location of the )q 9gss-jhffh)9 kvm8jk9a c +test charge?

  A 5.0-C charge is 10 m from a small test cc va,jv4tqvzuns/u43n) 0 ujhxa2 8x5gj/ v(iharge. What is the direction of the el0v/, anxi3 g)a5/j4uusjczntu( x28vq4vhj vectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitu kh/n5sa.jwih 2fz0e; y: m/bxde of the force experienced by a 1.0 nh:zs5/. jma xhib y/;02kwefnC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C an pm u8h uu))y/ qec,a02 sny8n+9fettod are separated by a distance of 4.0 m. What is the electric field at a point ueh9e2a y)f ,n8pmt/qs +) y8tucn0oumidway between the two charges?

  A 5.0-mC charge is pl/ b6of r bph. 3xqjg-fp+aa s2 .3kqultht*0x.aced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What i/2b 3 asg6-oklur.h..x+f hpqb*pja xftq 30 ts the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stice kf*cp-jg83k(o*lgck and a -4.0 mC charge is placed at the 50 cm mark. At wkc**(ge gjl8-fcp ko 3hat point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC ag-z)ivv)d2p h qwq btupy 1,e1h66n9xnd -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of tqt6 )u2z1 p hw)vnv iyg96dqe1bxp,-hhe electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a s-zhu px/;h*z aquare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the shzhpuaz ;*x-/quare.

  Consider a square which is 1.0 m on apzz 1pk, m6y8u:p)gv m side. Charges are placed at the corners of the square as follows: +4.0 mC 1up6p8:vpzmk)yz g ,mat (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 placed in a uniform eme kvzfz gqh1: k25a;p 0h,v3tlectric field. What is the magnitude of thiq, z2 3m0 az;fvtvk hg1:5hekps electric field?

  A particle with a charge of 4.0 mC has a mass of 4r a-yf6op /2rl ;v1nsfei fz*gm, u)u$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 lr08;b yg( c:egy/yhlh-rpe*g is placed in an electric field of 6000 N/C pointing downwl0gr(hee :l y;y h-rg*y p/c8bard. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries ae, cuwg.sbs(psy;n:z +nh) m5+z2d j a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. Wha+:z+ zjnunc2.yg)a;ses 5 pm(h, bdwst are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of + nau,e ):gjka81ch9ma8u.d xz2.0 mC. What is the magnitude of the electric field 5.0 cm from the spku jhzdc:8 x,m8.u9g)a ane1ahere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. z lmmclnzr-6-;u.7c fWhat is the electric fieldc.mcz6 f ;-ln-m7zrlu 6.0 cm from the center of the sphere?