State the law of conservation of electric chad:md1 yjpaq/439 jupurge.

  Is it possible for two negative charkk;e j ex3v5a;ges to attract each other?

  Is it possible for a positive awj t*cw8lr qmp3pp )60nd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glb)xc clc rm3.r(;p z.zass rod acquires a positiv;cr. lczb rmz3x. pc()e charge and the silk

  A proton carries a

  The model of the atom )mj+m cn :rjtk1u:;pwa c( n-wshows a

  A neutral atom always .l 9qk whl: sw8hjqs4nk7f 89ghas

  An atom has more electrons than protons. Tho7 s)y(gmz qzd*ysrhugu ijb+- -7 13ye atom is

  Materials in which tfsxma0 a; ss-*5ki:w khe electrons are bound very tightly to the nuclei are referredx5 w ka-*si s:fmk0s;a to as

  Materials in which the electrons are bound very loosely to the 73j7 h seez+irnuclei and can move about freely within the material 73 zihejer +s7are referred to as

  A negatively charged rod is brought near one end 6ive/wau * aux3roy suj0/+f*of an uncharged metal bar. The end of the mewyu e*v+3 ou j xa/f*sr6iu/0atal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plk2 3kqt/nh+f)mz+az 7y,rgxg8y / mnmaced near each other on an insulated tzr+t2g/)qn kky m8g/a mhm x+3z,7yf nable. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an p3obmi jdx 57wur:r /.electroscope positively?

  An originally neutral electroscope is briefly touched with a positi4h j2-if vlp1 c(:hvl vfsw; s4rxk:2,v9reoyvely charged glasjr:;l4ki22lhvep (vfv:9fv, hx orws1- y4s cs rod. The electroscope

  An originally neutral electrowxg4k* n avc5v88a ug.scope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is wa8 avnv.8xu4g5kgc* removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. ctx qz 206vml) Then a negative object is brought near the electroscope, but does not v6xz c q0)mlt2touch it. What happens to the leaves?

  A large negatively charz*dk(fxhlgp+ j2 lcr(l48a xi4jl36 zged object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it tiz c f(2l(x6 lgl84d *hxzalkpj4+jr3ouches 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 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 thehl ,a9 j9i+l6- ullc(fbkq.xg Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects *.)9 wc+gr e7ruk,maoh a/ ixlare separated by a distance d. The first charge is larger in m7a)cl9x wk,o arih.e rg mu+*/agnitude than the second charge.

  Sphere A carries a nejvg++) cu srg( n6/qwxqgd9)wt charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describesnwq q g6gs v 9cjx/dg+))(rw+u the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargeu8u uxbs ,.zej8 ,od2hs on both objects are doubled with no change in sejuhoeub, z 2xd8us,8.paration, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces ofaxuvus5+p2q2b6x7 l p F on each other. If the charges are separatedl+qs 7pav 25bu6pu2 xx by a distance of d/3, what are the new mutual forces?

  Two charged objects a7/l5ki9xhn lvjt2 6 tyuqia6( ttract each other with a force F. What happens to the force between them if one charge is doublhj vx/5ai(2ti6ytl79 k 6lu nqed, 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 proton are separated by a distance of 1.0 m. What happet (bhl y8a,bx8ns to the magnitude of the force on the proton if a second electron is placed next 8lh abb (t,8yxto the first electron?

  An electron and a proton are separated by s4ok.90d:9h y letbeta distance of 1.0 m. What happens to the magnitude of the force on the first y.:k4tleh tdoes99b0 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. Whatcmz8b-yp8ng(e tvp 83 happens to the size of the force on the proton if the electron is moved 0.50 m vbm38g- 8ptynpez8c( closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second point cl 4( p(kwo 1nycnnk7qecl:/d/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 three corners of t p/w c71:ynck /(den(kloq4nl he 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 pbqixx*pd)3 w0 5(oiuzlaced 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 center charge due to a third charge of +Q placed at one of the other ver)0p q dxuxzi( o3*b5iwtices?

  Which of the following is not a v7p 9*gb) xvwx d.s2fte bevlo)c3f12bector?

  At twice the distance from a point cha r8c tfrov;*)njx 1tcbd /:wr)rge, the strength of the electric field

  Is it possible to have a zero electric field value between a negat+m -rso4 cbv7xyh+/xpive and positive charge aly7x rsb+4 vcmhp +x/-oong the line joining the two charges?

  Is it possible to have a zero electric field value between two post/(ich0/4 qmf7y z mvvrxw9 5gitive charges along the line joining the twrvxtzq4ih ym0(c5v w/9f /gm7o charges?

  Electric field lines near psitive point eh01fera oc1+ charges

  The electric field shce4w e4tk/j)vown

  Can electric field lgovdz348l6 gf lmca, :ines intersect in free space?

  A solid block of metal in electrostatic eqixvq6;1o mhg3h +ew;8k.g ftfuilibrium is placed in a uniform electric field. Give a statement concerning the electric field ihi.q;;g3vx1 f6hfotw+8ek mgn the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ehu y,uf*sd8gu/o1 t*u ach given the same charge, the electric field (E) midway between the *o /fy*8g1ud,hutusucenter and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a un -3qsg2 jyxvi0iform electric field is directed straight upward. What can be v-30xysqjig 2 said concerning the charge on the block's top surface?

  If a conductor is in electrostaw xz1 kjgk)*5ut t;taw)e-hw7 tic equilibrium near an electric charge

  A positive point charge is enclosed in a hd) lxwn ;60e*axt/li nollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric f0; nxi*nlxd/e)w 6 tlaield at a point directly above the hollow sphere has

State three properties of conductors 5 ns mqscf5(7bfmff9lc 4lcln*4ru6 4in static equilibrium.

State Gauss's law.

  The charge carried by one elec4hea*.h- jm kkqt/4z ytron 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. a c/hij a)7jzyrv/ v0.1 .dcwhHow many more protons than elec/hj.)hjravv w0 1 7y.idac/zctrons does this piece of plastic have?

  What is the charge on 1 kg ( dt :4r4las1 pya/rpai23flw of protons?

  An atomic nucleus has a 9mv4o 7km6xxvrv:4 k icharge 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 -4.0 meno1 6x+ic ) qbh-xm*aC, respectively. W*eaxc1bom)in+6 q hx- hat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a s :/gp7okm zv:g-y8d0hdp2d( w of )gomecond charge, and the force between them is 1.0 N. What is -/mm8zd ov hgd2o)p:: go dw0y7gk(fp the magnitude of the second charge?

  Two 1.0-C charges have a force bet9hpeh mrc5y;58khcol87p u; oween them of 1.0 N. How far apart are they?

  The force between a v ,v3pla ku(y;9a b(kl3lbz1x$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienceryl9c gqm +o 6idup-41 a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the eleci l-1p +ocy r9g6u4mqdtric force between them?

  Three identical point charges of 2.0 mC are placm)3,jy2 n ybiued 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 direction of the electrostat3j) ,ymy inbu2ic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is pl 8;y) tfkkqm,paced 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 mag tf ;kyk8)mq,pnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the followi08dp e2g8 :drdcjxj )hng positions: Q1 = 2.00 mC at 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 force jj)2re 8cd8d: 0xdh pgon the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a s5 wu( llnu0 4sze+/dmmecond point charge of -Q is placed at the upper-left corne4(zuusnm/e l +l5 0dmwr. 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 third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.3 br-y-jgaap ,0zm +hu00 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force 0+prb- a-gh, auymz0j on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is+w:k q:zqv 3:1b7w2u4zl8sbg dmf vbg at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the dire b qub4vgz kgdwf8z:2+:q 7vw:3 bsm1lction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral t0woln4( hermm 8s1, sarianolm as(4h0s8,n1 rmewgle which measures 30 cm on 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, which are sepo6y9eesy*6ux91rrr qx /r :v7dp kt/f arated by 3.0 m. At what point, on a line betw/1:ry66qfe vt*xekrp u 7xrydo9 r/9seen the two charges, would it be 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-C charge is at x = 4.0 m. Whe5symm*20 z s2 mdbo1gbre on the x-axis can a third charge be placed so the net force on*sd25gsob zm 1 0y2mbm it is zero?

  Charge +2q is placed at the origx 9rby/ftxjom kic80xb s9928in and charge -q is placed at x = 2a. Where can a third positxxs/ r8jx bk 2908iobc9ytm9 five charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A *yx)/ vcbbjce2 2 ajh 7a25fzztotal 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 fort9/grvixv 4f /ce of gravity by the attraction of a fixed proton some distance above it. How far above the electrox v /rgfv4ti/9n is the proton?

  Two 0.20-g metal spheres are hung from a comm (2vn fvu;r-4 4*l a wcjci3kml6(pxpnon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them ap- ur l4v;(iljxac w*f4n(v2pc3n mpk 6art 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 magnitude of the electric b+sz p1vl i*b2field at a distanc*b2pz b s1i+vle of 1.0 m from the nucleus?

  What are the magnitude and direction o9z0k2vzf k0snkt+o 5 ff the electric field at a distance of 1.50 m from a 5os +05 k0tnfv2kfkzz9 0.0-nC charge?

  A 5.0-C charge is 10 m from a small test fh5l;q6j+bnz rf 2x/b charge. What is the magnitude of the electric field at the location of thex+ /nq;lfh b6fjb5r2z test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction ooclx hmu.:bj yd6y0+9 ),bzfj f the electrfc9zb, 6.j0db+luy)h:j xymoic field?

  A 5.0-C charge is 10 m from a small te: svt xk/(bsm5st charge. What is the magnitude of the force experienced sx5mb v/kts:(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 of c fxs7mn9n(+v5xbg c64.0 m. What is the electric field at a n5xbvsg f+7(6m9ccx npoint midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.tx z3 uuys(0b50 mC charge is placed at the 50 cm mark. What is the electric field 5b y( 3tu0zsuxat the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cw*9t sy :i/0glm)tvtkm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line jo y/:)9kl0 wgt it*mtsvining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are*fkh 0q/nntqug1b,- v( ki 0wl placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field0hi(vk b*ugftq-nk1 0n/w ,ql at the point midway between them?

  Three 3.0 mC charges are at the thrvcc g.+-cbuo w6;+y fzee corners of a square of side 0.50 m. The last corner is occupied by.o b; ycvzwc-fu++6 cg a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the coheie +xgk* o4 tu(n7t(rners 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 the magnitude of thee4(ogt +n7 ut(xiek*h 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 el.p+.btrn zh5f q*qy7vectric field. What is the qyb 5h+p7.trv z q.f*nmagnitude of this electric field?

  A particle with a chargv* b.)fu5mam8us3u h de of 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 g is placed in an electric field /ocs/gix0 o:0g -8i cyq0 3n5aclior l;y-t llof 6000 N/C pointing downward.sc-8ixc//0q -o l0g:rl0l5yito3;c i naygol What charge 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 nCd:2lq*ftfs z v p+7k,s. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction kdl27ffq tspz : v,+*sof the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnt6i l /*yh;jkl.kqdu8itude of the tylkk qjd /hu6l 8*i;.electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the q is41 9ot9jhdelectric field 6.0 cm from9 tdisq1o 9j4h the center of the sphere?