State the law of conservation of electrip(ot+ drq w: cl0lbfm3+gb8 :gc charge.

  Is it possible for two negative chargesivud;4 ti;3c3 acspj1 to attract each other?

  Is it possible for a positive and a negativer-xojmbaaqwo w+ .+;; charge to attract each other?

  A glass rod is rubbed with a piece of smk+7oip-q)( u1i dfrnb, jc/x ilk. During the process the glass rod acquires a positive charge and thir(jic),/nx- +p ub1d7 qkf ome silk

  A proton carries a

  The model of the atom shows/ /6a,s/e 4arwaorg o 1)gjmop a

  A neutral atom always hasp/ t r6viz+l7bq3zdh-

  An atom has more electy-griyqb00 qic o+ 7a(pfh4u9rons than protons. The atom is

  Materials in which the electrons are bound very tightly to 1 q)i;ndck j)ithe nuclei are referred to ascdiniq )) jk;1

  Materials in which tusyk/p +3j/i xhe electrons are bound very loosely to the nuclei and can move about freely within the puikjxs//y+3 material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal/qvgik9 -dr :r,8r z+fmt0rx liq0 sa/ bar. The end of the metal bar farthest from the charged rod zst:gr rdk09,rmi8axq-+fqr / 0l/iv will be charged

  Sphere A carries a netccfs q55h;ey 9 positive charge, 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 stateq 5ce5f 9cys;hment is correct?

  How can a negatively charged rod m/ v o-zlpz qj;v3kp4:l)xh/c charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively ch/(t f5juomyncnl5 j8 h9nf( sl1v+gz9 arged glass rod. The electcyo1lz8(5 smjn thfv/ 9n5+uj 9lgn(froscope

  An originally neutral electrhao( kn)kl:2,wxs/ /i hhr .gboscope is grounded briefly while a positively charged glassowxl:, k.)k/b gi(h2sh /rah n rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope,kt0*yi oofp,x8*8unv ze.;u kkvw4a * and the leaves separate. Then a negative of;wk* a p*ky0uuo. vovknx 84ezi,*t8bject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object isnsoe8n7 58a;s ugtf3c zw l1r+7yna7x placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metal+n7;l7exnw gsza to3 s75 uc fyn18a8rlic 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 constandv/7(u /skw xt z4ztuc34*phmt $k$, which appears in Coulomb's law?

  Two charged objects are separatedv qjgwc1w05m8;. zagr by a distance d. The first charge is larger in magnitu5vz ;. 8wg01aqgcj mrwde than the second charge.

  Sphere A carries a net chabfc6y2h8f56ac g0j 4,rfzy sm rge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostaticj gsh6a05c fmc2y ry6b 8zff,4 force between them?

  Two charged objects attract each other with a certain force.s*vt2l(z5 xon If the charges on both objects are doubled with no change in separatio 5l*2txzonv s(n, the force between them

  Two charges are separated by a distance d and exec8* ( ,6v, j fe,zpus/pwa9o/sosauagrt mutual attractive forces of F on each other. If the chara,jeouc z p(/wv,sog *s/,au68 s p9afges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects 7g,k :y+f eczguhq/y2attract each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, an+fu/2 hk:ycqz,ggye 7d 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 xbc stn::-rjl:l8(k j separated by a distance of 1.0 m. What happens to the magnitude of the force on thjlrlj (8: nsx-t::c kbe proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happensq/*c1sq fbsto4bl8z5 to the magnitude of the force on the first electron /tqq*cszb1b flo 8s54 if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m3 7mx0 qi(d4z zu un2*ldcc+rd. What happens to the size of the force on the proton if the electron is moved 0.50 m0z*n(cu+u 3idm7c2dq4z xlr d closer to the proton?

  A point charge of +Q is placed at the cente5ptv 8k kpzstec:; ,0qr 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 netvptzq:p ek 0ts8; ,5kc electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q tux)h;+pw . kmis placed at the centroid of an equilateral 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 cente t)k;+m.puw hxr charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followiak xl6+ dzsf6tc3d ,2dng is not a vector?

  At twice the distance from a point charge, the strength oaca0ry+57 -,pifficl70uczz8 q a*sl f the electric field

  Is it possible to havefs6,mg p-;qogi;b pvcu4 + 9ce a zero electric field value between a negative and positive charge along the line joining the two chme-pg6 c;suf gbp,i4 ;q+v9coarges?

  Is it possible to have a zero electric field value betweencq*8dx 5j*jb abyjlzb8r-5c .n(7p5uctp1c t two positive charges along the line joining yn8bj7x- p *8* j a b(1pcct5quc5tzbj5crl.dthe two charges?

  Electric field lines near psitive point chard xy+j7l6hty 9ges

  The electric field shownpmiob ;9iuz+2o*oe 4y

  Can electric field lines intersect )l4 v y* m*y9be 5fd*+uzpriamin free space?

  A solid block of metal in electrosc ( ga7ptz-q6static equilibrium is placed in a uniform electriczc qsg7a6t (p- field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal spher:wo fbrjcy6(rnf6:8ce of equal diameters are each given the same charge, the electric field (E) midway between t8nwf: rcby(cj6o rf: 6he center and the surface is

  A cubic block of aluminum 9w5 ctlsfm ;kou hl/v()z+j +lj-4axlrests on a wooden table in a region where a uniform electri4 s;hzu-t l k +vwj5xlol9 (l+amj/fc)c field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatxtpx rvi, k((zxdzwv c.4e-2(ic equilibrium near an electric charge

  A positive point charge is enclosed in a hoof1ru+3 4km qollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electricfmuoq 3o+1kr 4 field at a point directly above the hollow sphere has

State three properties of conductors in static equili-m zl t: 7shr:;9bh k;rpew*g;j3hjyn brium.

State Gauss's law.

  The charge carried by one electi6 pt8vkc/ qw :c.lv*cron 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 charg3wead 52hv zizry,+s-e of +2.00 mC. How many more protons than electrons does this piece of plastic havar3i,sedz yz-2 +hwv5e?

  What is the charge on 1 (jp-;x.lm)j k -: drmokfcq mbp 7c30dkg of protons?

  An atomic nucleus has a chargon 0wid4ql6flm.p5v , ah2.jge 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.btk4gc4n t fgdt x o 5yi*r:xxz/r4-(* nl-(ub0 and -4.0 mC, respectively. What is the magnitu5 * xr*nu yb: (odx(lkfbtt-x4i/-cgz44tgnrde of the electric force between them?

  A 1.0-C charge is 15 m from a second c5v1n:qp7 0y zqa4 hzefharge, and the force between them is 1.0 N. What is the magnitude of the second charge?yz4 vpf75:hqez n0aq1

  Two 1.0-C charges have a force between them of 1.0 N. How far n*/7k 1tlxqif3 (qzoaqgyi 44apart are they?

  The force between a 0k,i3 cn rxg-foy) ;wd$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially znrj/)0v7cxg, hhw* v 2.0 cm apart, experience a 1.0-N force. If they are moved to a new sepa*,/ghj n07w)vzhrcxvration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are plac4d7l- 0 bfv t7(hbui,z/ :4qzmqugibbed 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 magnitu fb:ig4,( dt-zbmzli 7hu7vq4 bb0uq /de and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A5z.) ps /+bfob/qk zbb 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 s 5/zkzbbp+bq./o)fb 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 located at the following positi f4d,vx m7iuoy* ah5/v-0wuq vons: Q1 = 2.00 mC at x = 1.00 m; Q2 = vu0- 7o, vva*x hud45q /fwyim3.00 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 square, and a slvmwji *2 xcu,wc4)9 wecond 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 cujmi )*,xwv24wl9cw 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.mbi9 (zc hzksh ; 0w(ez9)fgv, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whgm(b h;zf0)h(ec.s 9vi9kzw z at is 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 ats:qlrm+,-9tfg +jqo /d*i xjm (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nf +/dois-,trmqxj:g*l+q j m 9C charge?

  Three identical charges oal mk xy09(n)8 x3vpzqx zt+7o(zxc3gf 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostx39pyo lgqk z)xm(x+ t70(z xa8nzc3vatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated bj505i*wb xdn5p; uuxykt, i:x y 3.0 m. At what point, on a line between the two charges, would it be posinx;0uw y5k*5 dbux:px ti5, jsible 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 dj pv)(/gtm:gz7mf 7a1a c4xba +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it iazcd gtjgf(m):1bvxa47 / mp7s zero?

  Charge +2q is placed at the origin and charge -q is prwkvuy 9 4a.j-z9 y:urlaced at x = 2a. Where can a third positive charge +q be placed so that the force on u.vu -aj9z4rwry :k9 yit is zero?

  A copper penny has a m2pd5 4crh4u-* i8dlkwotww+mass 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 attnz. 69fl hastd- n69knraction of a fixed proton some distance above it. How far above theh nfz.6lk9t- 9asdnn6 electron is the proton?

  Two 0.20-g metal spheres are hung ali ,w5l i) wpaqycf.zg0cb4+x4, -f lfrom a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until tiaw 4l.0qypwx-af 45+,clfgic ) ,lbzhe angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a cha1vh5nddg li9k*k/ 2y n.loli0rge of +40e. What is the magnitude of the electric f ln0ilkd1 5d9*./gn2lvh koi yield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.5ryy)c;mxx:6 /gf gnv+n8a.*ud g a 8ik0 m from a 50.0-nC chargev nma gx g+ ;ydxrk)n.gi*8ay/:c 6u8f?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitu cr)y c0g wn*-e2*ko-zsqhzv(de of the electric field at the location v)sr2g- ehz* cy ocn z0k*-wq(of the test charge?

  A 5.0-C charge is 10 m from6idi/gz8 kv+gzrp ( p4 a small test charge. What is the direction of the electric field6/zikz8 vr d4 +(gippg?

  A 5.0-C charge is 10 m from a small test charge. Wftmt3eblz 2q175 yhe./;hrc : dh*ivzhat is the magnitude of the force experienced by a 1.0 nC charge placed at;l 3:eqfe v.7tcyzth/i*bhd1r m z2 h5 the location of the test charge?

  Two point charges each have a value of 3.0 C and are sepxy+f5 h.vs43sunqj ewl k0;4r arated by a distance of 4.0 m. What is the electric field at a point midway between the two+k yh5s4 uf snvl3 .0qewrj;4x charges?

  A 5.0-mC charge is p afpt*v+ d;. p t0f/8fyqu;nlalaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What i*ty/uavfdf.; tfn+qpp 80la; s the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm acd:-69yh ;ksa u gwm2mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line jo;dmas6wyuk-ah:g2 c9 ining the two charges is the electric field zero?

  Two point charges of +3.0 gtf;inr55 00b pm8xrcmC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between them?nm t80c x rf0r5gp;i5b

  Three 3.0 mC charges are at the three cornerj89 :agap x1lypqb4 bz7 ,e in29q,zygs of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fiel9a 1 l47 8p2gpniy zabq:9zxbyq,gje ,d at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed ,)v.z8m zp y:oxf 1pzrat the corners of the square as follow1f, ro8zzyp)x :z.pv ms: +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 chz ahzct816b.) +a id ct6/xuc98y rk32pvpm kfarge of 5.0 mC when it is placed in a uniform electric field. What is thmc /6h.xac8ki z bt9f2ypr)1 dk8z3pc t +6vaue magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mx * (pxnr+ehk+unv 6v*ass 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 l *je dm r46* u0fx*,f/dsef0 r6btz4gvh 1akgis placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the sg/ **bmlhgzj6edd60 fx1*akftf4v e 4, rur0ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placuy*hb2 :m3wp zed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction ofubp*h z: my3w2 the electric field?

  A metal sphere of radius 10 cm carries a charge of +2rx)dic ,ji 3d.pbf/* lt7 hv6o.0 mC. What is the magnitude of the electric field 5.0 jx6ici.btd of3v7*,hrld) / p cm from the sphere's surface?

  A metal sphere of radius 2.0 cm ca ox -gu6,-hjaqj-r, h0iy)ijxrries a charge of 3.0 mC. What is the electric field 6.0 cm from the center o-h- roj gj-qahiui6y x,x0 j,)f the sphere?