State the law of conservation ol1iu1gul1 x4pgxw0 vx xa6 q//f electric charge.

  Is it possible for two negated48x6-hbo rr b +u6t8v.fn2bo1uydgive charges to attract each other?

  Is it possible for a positive and a negative charge to attract each ) nfvf( x6 4zr* cgeote6vl8.sother?

  A glass rod is rubbed with a 2m lu9:k56b) y mrjwwbc(m*la piece of silk. During the process the glass rod acquires a positive char5 rlm6l(ybukm:*wj2)b9amc wge and the silk

  A proton carries a

  The model of the atom showf l* n hk.h1yr2mef.1qs a

  A neutral atom always h,qms/qk 4*fl95rl2 a-el bparas

  An atom has more electrons than protons. The atom isd6p1 :f.dcp4 d/f7t6cr d)a gn1jbcy63q izwv

  Materials in which the electxn 0-i0 ryqsxitvt r6q6g8h.-rons are bound very tightly to the nuclei are referred tr6-rin8hgv.q0 - 0t6xyqtisxo as

  Materials in which the electrons are bound vrsxgg:,zr.w8 ffsls 81 8mi;fery loosely to the nuclei and can move about freely within1fgfr.lzfgsri s, wx 8;m s88: the material are referred to as

  A negatively charged rod is brought near onv;v y*uoxr)0 ne end of an uncharged metal bar. The erux *)n oyvv0;nd of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plac40xzry z 8)aojed near each other on an insulated table. Sphere B is briefly touched with a wiry)z4j80zaxo re that is grounded. Which statement is correct?

  How can a negativelyur* ei8vwmn8)q; 0b(1hy u kjr charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a posi+d9 5 w ti0-odwd6ezpxtively charged glass r0wd+w6otd -x5 p9 zediod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively cl o0;zvilg6 d/cveo ;7harged glass rod is held near it. After the glass rod is rld i;l0vz7;gceo6/ ovemoved, the electroscope

  A positive object touches a neuttk1if k/k6n /h9d7z6ebes66 tcv syi9ral electroscope, and the leaves separate. Then a negative object is bro6k6s9ikcnh be// 9ttd1 6f 6ziye sv7kught near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral mhn9f4 i-z)ojz 6fxa +xetallic 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. 6fh)f -+oznxijza49x 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 Coulomi5* rg xo(-m8 zgdmp/kb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thu6khku)a z;sl 603, d-rk2yx cpx .9y5rnsegje first charge is larger in magnitu g3 ;ur5ep , -)xy60l6k2.zd u9jx snrksyhakcde than the second charge.

  Sphere A carries a net ch j/szw2o )yn q-vnqx0,0o27k 6zxfzigarge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best d/nxoikz x zgqsz ojn0v7 -0q f2w6,)y2escribes the electrostatic force between them?

  Two charged objects attract each other witcy 1 uwkyl83s0h a certain force. If the charges on both objects are doubled with no change in separation, the force betweeu80w c3 kyyl1sn them

  Two charges are separated by a distance d and exert mu2lp(ekv)u::kx/, a g ncmoeb; tual attractive forces of F on each other. If the charges are separated by ek v gpn,:ca oekxul :)/(b2;ma distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forceu1r/exge 27qx lnmc 9: F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separamer79u elc /n:1x gqx2tion distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are sazzxfn2 tp* j8u rq ./*+n4noieparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton .onzqun iaf/ 28nrt zx*4j p*+if a second electron is placed next to the first electron?

  An electron and a proton uun-s laih*2a pcr;85 jvz(u9are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placedul5 aip(-z8uan* s2u9;cjvrh next to the proton?

  An electron and a proton are sepbzz7k- 94cbfev n4x yg)m0s/ rkyajq91t42tb arated by a distance of 1.0 m. What happens to the size7bet2b tvqcsb9 4y4af4xy/k9nr z1zm-g k)j0 of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of /8+n*j*he6uwty low g l,kx5da 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 cornh8* gwt*6xldu 5j,o+e /ykwn lers 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 placed at the centro-99 fpyhtz (vdid 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 o dp hy-t9z9fv(n the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following isdy qtj/ t+,26ibv)l af not a vector?

  At twice the distance from a point charge, the:wl7r n2jibt chi.f,5 strength of the electric field

  Is it possible to have a zero electric field value betw5 d9 t 7x5xtyv*i4;j ygv2dddyntf2m7een a negative and positive charge alonxyv2 y2nt 57t 7idm9j4; gdyt5x*d dvfg the line joining the two charges?

  Is it possible to have a zerw-. :afccq gfrrh(k/ohrb ;5l5 0+tjio electric field value between two positive charges along the line jor5c-fhwjf5(lot:;ra cbi0kh r.+q g /ining the two charges?

  Electric field lines +g9.bi v6ocpofe1; mgnear psitive point charges

  The electric field shomvl .:jt-8ry*hxm* qk wn

  Can electric field lines inter p6t( y.oxn7bqsect in free space?

  A solid block of metal in electrostatic equilibrioe5 njj-iq9 (r+ i*vrrum is placed in a uniform electric field. Give a statement concerning the electric field n r-erjr i9*jv(+5oiqin the block's interior.

  If a solid metal sphere andcdu t4n /np s;2.d5egz a hollow metal sphere of equal diameters are each given the same charge, the electric field (t.nz pu42ed/ dsgc 5n;E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifmlbb- k:-exi3 m-d d6norm electric field is directed straight-m-6-l3x m :bneidbk d upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an egxd ft9hle90 w) a9;psuap) :flectric charge

  A positive point charge is encl(a ksbj/7i i1vl8 9lilosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point direc9k(si 1bjl iv8l /ial7tly above the hollow sphere has

State three properties of conductors in static equilq;m xgtkm,c( 0u)/ sgfibrium.

State Gauss's law.

  The charge carried by one electron is bi*wlc- : 91nrv in(jm$e = -1.6 \times 10^{-19} \; C$. 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. How many more p.lf3:do86 9hflomnmjtdpgtb* lz* f0hk- z:-rotons than electrons does this piece k:z .jgo-*3ol fh d0 69h b-8pm*tdm nftllf:zof plastic have?

  What is the charge on 1 kg of prot vj0hoyysz:4pti ,b ff;f1 :f0ons?

  An atomic nucleus has a charge u4t(9ptyyzv:r 1a 6fcof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated)2ri zv12.tp nc dq9nw by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectztwn iv1c)qpr n.2 92dively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the tb/qg6hmih ,h np,m72 force between them is 1.0 N. What is the magnitude of the second ch7 q hhig/2mph6,nbt,m arge?

  Two 1.0-C charges have a force between them of 1.0 N. How fas 83c b(*r(ewgjav ck 3f5asn/r apart are they?

  The force between a --v*t8;sw7i 2lep uc1 us4epx9 vmxom$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience f1u-c 5kj xv2msf s(s3a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electx5 f3s1c fjm vkss2u(-ric force between them?

  Three identical point charges of 2.0 z:ut k9o0 2kg6z/ dwxcu yhl*z+d6v7fmC 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 and direction of the electrostatic force which acts on t2ld 7d:f/v6t0*z6 kyw u xokzgchuz 9+he charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed ath33i6chu1re2;r * urp.yeig k the origin, -2.0 m C toh r.32giyi3 1 e;ruhc6krup* e 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 the origin?

  Three point charges are l6)5l cc ccev,o lzxn1cr dz);9ocated at the following 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 on the 3.00-mC chc)czzc1) c,verdn56o 9lc lx ;arge?

  A point charge of +Q is placed at the center of a square, and a se;p4txe cd)i0wbd7i9+w. gb kucond 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 the center charge74d+w e9d0wc.b b xitgkpui); 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,/yw7jpju)q 8f 0.10 m); Q3 = 5.0 nC is at (0, 0) 7p wfjy)uqj/8. What 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 bzo1x,6ay gig 0v4a3c, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force a0xog,3gaybv4c6 i1z on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placx dqwpz sqrv195osl*ft 5;5z*ed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on atqz1 rl*9p dqz5sv ;wso 55f*xny one of the charges?

  Consider point charges of +Q and +4Q, which are sepv vs6e.vaj+j vv 6(j+713qwuw.uj wczarated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the ele+(wsvc w.3 6uwzevq 1uv jjjv7+jv.a6ctrostatic force acting on it would be zero?

  A +3.0-C charge is at the origp,2kljppj+ i2 gs:,z fin 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 net force on it is zer,s p,jjp pz:gf2k +il2o?

  Charge +2q is placed at the origin and charge -ql3gr,b3yiur, mv:k* m3 lt,yi is placed at x = 2a. Where can a third positive charge +q be placed so that rr3g,bt, yuy*, m v:l3mlki3ithe force on it is zero?

  A copper penny has a 7r6wzwtnhn,th sv t.8 ;l2-sk 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 thelc cg9l9i /*mm attraction of a fixed proton sm 9*l c/m9cgliome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres ae(8jlno+ w ;srkm*grb/mm l 1,re hung from a common point by nonconducting threads which are 30 cm lol+(1; jkmrr/ ,gw* ombsem n8lng. Both are given 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 charge of +40e. What is the magnitude xg6+rva nd)w /of the electric field ard wn /6)xv+gat a distance of 1.0 m from the nucleus?

  What are the magnitude and direction ofs4r. -h9naou sb)ii-j the electric field at a distance of 1.50 m from a jus9. s ihn4-bro-)ia50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is tqpswalu wax (, tb j0/.yw0l*y2k:a*lhe magnitude of the electric/.0qp ll 2twku wa0:a* b wsljyax(y*, field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dirg, fos5g9abk.a *y k ;i+9bdg,z4fcreection of the electric fiigz.fabr59dk4 ag;,f9k ,eybgo sc+ *eld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude6 k;j 1mj(xtnl of the force experienced by a 1.0 nC charge placed at the location of the test chargej(j 61 xnlk;mt?

  Two point charges eacs:wsq /36sqauf ky3s 6h have a value of 3.0 C and are separated by a distance of 4.0 m. What is the e3 usq/s 3:swak6q6fys lectric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a ;wbl/tuqdk+ob5y ;mr+ pf:, smeter stick and a -4.0 mC charge is place 5 q sdt+b ;l;ur:m,kpfo/+bwyd 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 mejae+3 * phk6qrf6w0y) qmip1kter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a linaqkk6q hp6) e3wy0prmifj 1*+e joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are plac,hgdo+9tyxtt83) evob 70j jxed at x = 0 and x = 0.20 m. What is the magnitude of the electr ,ght8+o3y0vtxodj9t 7)xeb j ic field at the point midway between them?

  Three 3.0 mC charges are at thun, v-8bfh1-jlm*w xfe three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fieldl v h-u*nxwf-, bm8j1f at the center of the square.

  Consider a square which is 1.0 m on a side. Charg wd0m*tgm8o+;suz 2- wf.drspg)4h cces are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mmd*4cps2w wshg mgur8+;d. f0)t-zocC 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 xmmf72ka2rnxk:j: /km k3 1+cvjbr. j on a charge of 5.0 mC when it is placed in a uniform electric fx2m j: 3 jkkcvrrnmxk1.mb/k+2:aj 7 field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has s,2i pef(c qlx/k0oa( 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/.tzvgz- dm3 m g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspendem/ vmzt.3 -zgdd?

  A foam ball of mass 0.150 g carries a charge ol76s, ze20mba8xwpz5x ,fv gyf -2.00 nC. The ball is placed insid682m b ,yvxxp,za lf57es0wzge a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of ra5 kpenj7 t5y-odius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm p-eo 7kjt55ny from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What i.dy7.h:gwlv99dvajv. - ck:rmpp) ub s the electric field 6.0 chj.yp9g.l pcv d).9b rvv-k: :7a duwmm from the center of the sphere?