State the law of conservatifwhd:9a)p rpo:jn ,i3on of electric charge.

  Is it possible for two negative chara+w-eof o 0fi1ges to attract each other?

  Is it possible for a posi j+;ydutgbbv 6yi5)* ftive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the procesvp5 umei tr(77c: c7uis the glass rod acquires a positive charge andmuur v i (ti7cc7p5e7: the silk

  A proton carries a

  The model of the atom shows jj( +* d9d3xdh )rwgph y1au3ha

  A neutral atom always +.awe2j t 3ja6h0y68p dvd lvjhas

  An atom has more electrons than protons. The2+j4 f4 +pgb bwa3gma( hdxm5x atom is

  Materials in which the elecipk9/s z fyn8 1/h-dxhzwdyc7z l4as wf*(7+utrons are bound very tightly to the nuclei are referred 8 dz*9/fls(z4- +dyws y71pha ixc /fk7wuh nzto as

  Materials in which the ele fg1 jnmm0-;ikctrons are bound very loosely to the nuclei and can move about freely within the material are -1;f0nik gjmmreferred to as

  A negatively charged rod is nv*; i8abdq7a2e)hzh1 y-ybibrought near one end of an uncharged metal bar. The end of the metal ba8ybv1ae ;di-nzhiy) 2a*h7bqr farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphvw/jl-- *h 8j* njzzz/z ey.feere 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 s jj- ze/8jh*wnv.*z-zez ly /ftatement is correct?

  How can a negatively charged rod charge an electroscope positivel8 c39xidm 6fo5n8nkuay?

  An originally neutral electroscope is briefx3 ;gsq9pxju 9ly touched with a positively charged glass rod. The electrj3 uxs;xg9q9 poscope

  An originally neutral wsp5y+y c. vx/electroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the ele+5p/ .yswvyx cctroscope

  A positive object touches a neutral electroscope, and the leaves separate. Then*j1 chn a)hfk( a negative object is brought near the electroscope, but does not tca 1)fj h(khn*ouch it. What happens to the leaves?

  A large negatively charged object is placed on an yh5e* wcnvtg *2w*jdma x,t d4c;(lx/insulated 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 followewd2jgvx w5dthtm,y* l (ex*c *a/ cn;4d 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 Couq8ex)oody:y ; lomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distwspvc :-q6cv 0v -oa:( :oj1o*ccqbp oance d. The first charge is larger in magnitude than the second chargcp vq6acj -:wocv v0b:( *-:1ocq sopoe.

  Sphere A carries a nwg (x9ild0hxm *f,d0met charge and sphere B is neutral. They are placed near each other on an ins*0 hf9il(w0dmx,xmgdulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract ea3f ps.h.l icfg8 1asm.ch other with a certain force. If the charges on both objects are doubls.hcs1..f mga38l pfied with no change in separation, the force between them

  Two charges are separate- azs3wtp70ba9+u al cd by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3,w3u+a 07aa9pzsl- bt c what are the new mutual forces?

  Two charged objects attract each ofzffs1q q p lri,)e-8-ther 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, ef f1)-fiz8rslqq-p their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What haz.n 94b te3upd nzzu1 :vdu7/oppens to the magnitude of the force on the proton if a second electron is place3db/nuvdn4uzu7 zet. zpo 91 :d next to the first electron?

  An electron and a proton are separated b0xgi-ge yccauvo81+kav6r7 : iv 4 -sey a distance of 1.0 m. What happens to the magnitx:+v-4vkou8ag 6c7 -g1saei 0e vircyude 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 a distance of 1.0 m. Wha ya +xv;ey.qk+t happens to the size of the force on the proton if the;yq+ x.ak ye+v electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second point cwano b96a4k(n harge 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 th9 b4w 6n(aoknaree 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 plaqz*t8 ekk4+ez yjn-0gw)ls6 qced at the centroid of an equilateral triangle. When a second charg8*4eklq 6 sqt0jwy)kzn +ze-ge 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 a vjrc-l dh*, j) irs9u itmz7;r)ector?

  At twice the distance from a point charge, the sicz8: zp snsk *(sj 9f4u14lfo* uih8btrength of the electric field

  Is it possible to have h 6z23gl hvfz*)5 pgiti fl/p6a zero electric field value between a negative and positive charge along the 2fh6i)36 lpgiz tzlpfvg /5h*line joining the two charges?

  Is it possible to have a zero electric field value between two positive chargeszp(/p 46t mcts53kvin along th45i/ nps vpzc6kmt(t3 e line joining the two charges?

  Electric field lines near psitive point ch2 uipocm,av oyw n1d15.zr g-6arges

  The electric field shown 6a 9t;n/w (pi26f1q yjqk2 2; rtqsh croeowg)

  Can electric field lines int:tfe:.e*/td7 4n3ixa sdjlh ,mn( hyzersect in free space?

  A solid block of metal in eunyr.2-u,b f8(/fej nt o ygr-lectrostatic equilibrium is placed in a uniform electric field. Give a statement concer y e fj2--u8/rr(nyfgbn,.utoning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gthr9,kp)g8g6yvvlw : iven th ,lghygpr6 vwk 98)tv:e same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on wy9q nb 1z *n+hm8)wxnm6kvo. a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's wm 9 * zmbo knv)8y6wq1nxh.+ntop surface?

  If a conductor is in electros(j.y.6)tmejsg8oi(6 so ka kstatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gv97u1 avne 8eo4ybj0grounded. As compared to the case without the hollow sphere, the electric field at a point directle 8vy14euvn a9jgbo7 0y above the hollow sphere has

State three properties of conmua4n4io k d+(ductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is ,tky(nijo0)h lu+ l)y+ns z1x$e = -1.6 \times 10^{-19} \; C$. 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.3rb idmggm)*p:w 5g n. How many more protons than electronsgg)w 5grm:dnpimb* .3 does this piece of plastic have?

  What is the charge on 1 kg ofnp8fv ry*(o3m +v/pkw protons?

  An atomic nucleus has a charge1w* p6njbo.hi5qde-8q sq ui0 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 -4.0cimbz/:ap+:u )q4 hc e9rrwp - mC, respectively. What is the magnitude of the electric cqcwpr)+-u4z/ mpi 9: :erhbaforce between them?

  A 1.0-C charge is 15 m frzevi.)gz6 jqsv. yy0 )om a second charge, and the force between them is 1.0 N. What is))geiy0jvs. zy6.qvz the magnitude of the second charge?

  Two 1.0-C charges have a for7 lr-o hulz9fni vhh)59kj0) cce between them of 1.0 N. How far apart are they?

  The force between a zvzzrn8 / 1tw+bx xr9r2b)jo1$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initikiwrg74c6x*o( l /+to uks xz6ally 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 electric force between thex zl/xgo u6(*4tk6cik7r swo+m?

  Three identical point c idhn-)6;zh/dt5psc charges of 2.0 mC 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 magnitude anc)5/zdsh ic;6h-p ndtd direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge o 8 m:cb9ekyjcq;.-vofg 00grqf +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 t.-8oq9; g ygjm:vbrc0 kecfq0he origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC :og /r,me ykj9at 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 the ky 9e:r/,gojmforce on the 3.00-mC charge?

  A point charge of +Q is placed asdw.qrkf 173s sf40xd bb7 mx )m)l.oot the 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 fof7b )dsf43xkx 7l.wqd )r .o0 b1somsmrce 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 (0.3dc)+oxp1wp ; p0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whapdp;xw)+ cp o1t 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 at (0, 0.10 m); Q3 = 5.0 e0z e(vi3,oar7gp ;v enC is at (0, 0). What is the direction of re,v vap0 7z3(eego ;ithe net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilff h g e(84siamuc405materal triangle which measures 30 cm on a side. What is the magnitude of the electrost (4fi 8ma hmc0use4f5gatic force which acts on any one of the charges?

  Consider point chargeswh-x.yzbxh+h ,rbj5toi 55wu4*ox, z of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it bez*y 5,h,z.5bwwhj 4xx-orut obh5x i+ 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 b s*wb2p4jil)-C charge is at x = 4.0 m. Where on the x-axis cab bsj 2p*)l4iwn a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a.w:lsim-q+sd8 Where can a third positiv+ lssm:di-8q we charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A.jgzni:ssi zd1-r m8k:p 2m -m 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 gry4 vn 1+kizxm ;8mib8davity by the attraction of a fixed proton some distance above it. How far above the electron is the;dii8 z+48kmmv b1 nxy proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads wi gnwn0am t/*km6d:2n9s+ggg hich are 30 cm long. Both are giv9nkm/ dw ig +ngg2g:* stn0am6en 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 a gfjn0dwhlsjt0 ;,2un ,1.qej charge of +40e. What is the magnitude of the electric fijq1js2dnth,wje0;,0n fg . lueld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fielw*. iqoj ds;;b3cgxw c/o7a(ld at a distance of 1.50 m from a 50.0-nC chargew *3;l;cio so d/qaxwgj.bc7(?

  A 5.0-C charge is 10 m from a small test 4+ b qhr4ebg3aa: vxp+charge. What is the magnitude of the electric field at the lo4+apr 4 e+x bvgbahq:3cation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction occk jnp2h.70odbpsdz/r7i (d w8k; q 3f the electri70(/nkbzdwk rs3. hd7qd2opi 8p c ;cjc field?

  A 5.0-C charge is 10 m from a small test charge. What id39vj8ms un48ige h- 7rltmt;s the magnitude of the force experienced 8ted r;3us nlt94hgjmmv-78i 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 separated by a distance oy wnw*ou*,+kxt pg.3l f 4.0 m. W k,*3*ox wnp.gy +tluwhat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC ch8;pe omzx)ps9arge s;89x eoz)pmpis placed at the 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 stick and a -4.0 mC chab oioyn p30r 01**vuz-c:mfpbrge is placed at the 50 cm mark. At what point on a line jo:10bib0p - 3v rz*mc*oypfunoining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -5snbu y/ta6 o;*w4ram 3eecg 97.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the ele w*3 r/m5sta;ge4bnyauoe 69cctric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side f)* z uya)a2jv0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electri *zavafu yj))2c field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corn:b2bl 0y1zq pyers of the square as follows: +4.0 mC at q 1:b2yly bzp0(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 eld1;pr4 7zyfo dx3o(vyw xmdihp1;4x7 ectric field. r( 3;dofoxhz4 wdp1xp17m y4d x;vy i7What is the magnitude of this electric field?

  A particle with a charge of 4.0 mqus,g gg 7w);oC 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 g is placed in an elect vwaw8-td/.2kckroe 4ric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspend -4e c8kw2d/wk.avort ed?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. 0uop( p-,l xig The ball is placed inside a uniform electric field, and is -0xgpoli( up,suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 )v;(ps0lnj kz cm carries a charge of +2.0 mC. What is the magnitude of the electricvj(s0nkp) ;zl field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. 6g3ufj7m84 jj gztq6t What is the electric field 6.0 cm from the cenj47mt6j3j uz8gqgf t6 ter of the sphere?